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Servanté EK, Halitschke R, Rocha C, Baldwin IT, Paszkowski U. Independent regulation of strigolactones and blumenols during arbuscular mycorrhizal symbiosis in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024. [PMID: 38818938 DOI: 10.1111/tpj.16848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 06/01/2024]
Abstract
The apocarotenoid strigolactones (SLs) facilitate pre-symbiotic communication between arbuscular mycorrhizal (AM) fungi and plants. Related blumenol-C-glucosides (blumenols), have also been associated with symbiosis, but the cues that are involved in the regulation of blumenol accumulation during AM symbiosis remain unclear. In rice, our analyses demonstrated a strict correlation between foliar blumenol abundance and intraradical fungal colonisation. More specifically, rice mutants affected at distinct stages of the interaction revealed that fungal cortex invasion was required for foliar blumenol accumulation. Plant phosphate status and D14L hormone signalling had no effect, contrasting their known role in induction of SLs. This a proportion of the SL biosynthetic enzymes, D27 and D17, are equally required for blumenol production. These results importantly clarify that, while there is a partially shared biosynthetic pathway between SL and blumenols, the dedicated induction of the related apocarotenoids occurs in response to cues acting at distinct stages during the root colonisation process. However, we reveal that neither SLs nor blumenols are essential for fungal invasion of rice roots.
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Affiliation(s)
- Emily K Servanté
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Rayko Halitschke
- Max Planck Institute for Chemical Ecology (MPI CE), Jena, Germany
| | - Catarina Rocha
- Max Planck Institute for Chemical Ecology (MPI CE), Jena, Germany
| | - Ian T Baldwin
- Max Planck Institute for Chemical Ecology (MPI CE), Jena, Germany
| | - Uta Paszkowski
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, Cambridge, UK
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Wang K, Li J, Fan Y, Yang J. Temperature Effect on Rhizome Development in Perennial rice. RICE (NEW YORK, N.Y.) 2024; 17:32. [PMID: 38717687 PMCID: PMC11078906 DOI: 10.1186/s12284-024-00710-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
Traditional agriculture is becoming increasingly not adapted to global climate change. Compared with annual rice, perennial rice has strong environmental adaptation and needs fewer natural resources and labor inputs. Rhizome, a kind of underground stem for rice to achieve perenniallity, can grow underground horizontally and then bend upward, developing into aerial stems. The temperature has a great influence on plant development. To date, the effect of temperature on rhizome development is still unknown. Fine temperature treatment of Oryza longistaminata (OL) proved that compared with higher temperatures (28-30 ℃), lower temperature (17-19 ℃) could promote the sprouting of axillary buds and enhance negative gravitropism of branches, resulting in shorter rhizomes. The upward growth of branches was earlier at low temperature than that at high temperature, leading to a high frequency of shorter rhizomes and smaller branch angles. Comparative transcriptome showed that plant hormones played an essential role in the response of OL to temperature. The expressions of ARF17, ARF25 and FucT were up-regulated at low temperature, resulting in prospectively asymmetric auxin distribution, which subsequently induced asymmetric expression of IAA20 and WOX11 between the upper and lower side of the rhizome, further leading to upward growth of the rhizome. Cytokinin and auxin are phytohormones that can promote and inhibit bud outgrowth, respectively. The auxin biosynthesis gene YUCCA1 and cytokinin oxidase/dehydrogenase gene CKX4 and CKX9 were up-regulated, while cytokinin biosynthesis gene IPT4 was down-regulated at high temperature. Moreover, the D3 and D14 in strigolactones pathways, negatively regulating bud outgrowth, were up-regulated at high temperature. These results indicated that cytokinin, auxins, and strigolactones jointly control bud outgrowth at different temperatures. Our research revealed that the outgrowth of axillary bud and the upward growth of OL rhizome were earlier at lower temperature, providing clues for understanding the rhizome growth habit under different temperatures, which would be helpful for cultivating perennial rice.
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Affiliation(s)
- Kai Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Jie Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Yourong Fan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China.
| | - Jiangyi Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China.
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Ding Y, Zhang X, Li J, Wang R, Chen J, Kong L, Li X, Yang Z, Zhuang L. Transcriptome-Based Weighted Gene Co-Expression Network Analysis Reveals the Photosynthesis Pathway and Hub Genes Involved in Promoting Tiller Growth under Repeated Drought-Rewatering Cycles in Perennial Ryegrass. PLANTS (BASEL, SWITZERLAND) 2024; 13:854. [PMID: 38592951 PMCID: PMC10976046 DOI: 10.3390/plants13060854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/04/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
Drought stress, which often occurs repeatedly across the world, can cause multiple and long-term effects on plant growth. However, the repeated drought-rewatering effects on plant growth remain uncertain. This study was conducted to determine the effects of drought-rewatering cycles on aboveground growth and explore the underlying mechanisms. Perennial ryegrass plants were subjected to three watering regimes: well-watered control (W), two cycles of drought-rewatering (D2R), and one cycle of drought-rewatering (D1R). The results indicated that the D2R treatment increased the tiller number by 40.9% and accumulated 28.3% more aboveground biomass compared with W; whereas the D1R treatment reduced the tiller number by 23.9% and biomass by 42.2% compared to the W treatment. A time-course transcriptome analysis was performed using crown tissues obtained from plants under D2R and W treatments at 14, 17, 30, and 33 days (d). A total number of 2272 differentially expressed genes (DEGs) were identified. In addition, an in-depth weighted gene co-expression network analysis (WGCNA) was carried out to investigate the relationship between RNA-seq data and tiller number. The results indicated that DEGs were enriched in photosynthesis-related pathways and were further supported by chlorophyll content measurements. Moreover, tiller-development-related hub genes were identified in the D2R treatment, including F-box/LRR-repeat MAX2 homolog (D3), homeobox-leucine zipper protein HOX12-like (HOX12), and putative laccase-17 (LAC17). The consistency of RNA-seq and qRT-PCR data were validated by high Pearson's correlation coefficients ranging from 0.899 to 0.998. This study can provide a new irrigation management strategy that might increase plant biomass with less water consumption. In addition, candidate photosynthesis and hub genes in regulating tiller growth may provide new insights for drought-resistant breeding.
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Affiliation(s)
- Yunjia Ding
- College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China; (Y.D.)
| | - Xiaxiang Zhang
- College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China; (Y.D.)
| | - Jialei Li
- College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China; (Y.D.)
| | - Ruying Wang
- Department of Horticulture, Oregon State University, Corvallis, OR 97331, USA
| | - Jie Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Lingna Kong
- National Experimental Teaching Center for Plant Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin Li
- College of Life Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhimin Yang
- College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China; (Y.D.)
| | - Lili Zhuang
- College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China; (Y.D.)
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Nomura T, Seto Y, Kyozuka J. Unveiling the complexity of strigolactones: exploring structural diversity, biosynthesis pathways, and signaling mechanisms. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1134-1147. [PMID: 37877933 DOI: 10.1093/jxb/erad412] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/20/2023] [Indexed: 10/26/2023]
Abstract
Strigolactone is the collective name for compounds containing a butenolide as a part of their structure, first discovered as compounds that induce seed germination of root parasitic plants. They were later found to be rhizosphere signaling molecules that induce hyphal branching of arbuscular mycorrhizal fungi, and, finally, they emerged as a class of plant hormones. Strigolactones are found in root exudates, where they display a great variability in their chemical structure. Their structure varies among plant species, and multiple strigolactones can exist in one species. Over 30 strigolactones have been identified, yet the chemical structure of the strigolactone that functions as an endogenous hormone and is found in the above-ground parts of plants remains unknown. We discuss our current knowledge of the synthetic pathways of diverse strigolactones and their regulation, as well as recent progress in identifying strigolactones as plant hormones. Strigolactone is perceived by the DWARF14 (D14), receptor, an α/β hydrolase which originated by gene duplication of KARRIKIN INSENSITIVE 2 (KAI2). D14 and KAI2 signaling pathways are partially overlapping paralogous pathways. Progress in understanding the signaling mechanisms mediated by two α/β hydrolase receptors as well as remaining challenges in the field of strigolactone research are reviewed.
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Affiliation(s)
- Takahito Nomura
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Japan
| | - Yoshiya Seto
- School of Agriculture, Meiji University, Kawasaki, Japan
| | - Junko Kyozuka
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
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Tolnai Z, Sharma H, Soós V. D27-like carotenoid isomerases: at the crossroads of strigolactone and abscisic acid biosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1148-1158. [PMID: 38006582 DOI: 10.1093/jxb/erad475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/24/2023] [Indexed: 11/27/2023]
Abstract
Strigolactones and abscisic acid (ABA) are apocarotenoid-derived plant hormones. Their biosynthesis starts with the conversion of trans-carotenes into cis forms, which serve as direct precursors. Iron-containing DWARF27 isomerases were shown to catalyse or contribute to the trans/cis conversions of these precursor molecules. D27 converts trans-β-carotene into 9-cis-β-carotene, which is the first committed step in strigolactone biosynthesis. Recent studies found that its paralogue, D27-LIKE1, also catalyses this conversion. A crucial step in ABA biosynthesis is the oxidative cleavage of 9-cis-violaxanthin and/or 9-cis-neoxanthin, which are formed from their trans isomers by unknown isomerases. Several lines of evidence point out that D27-like proteins directly or indirectly contribute to 9-cis-violaxanthin conversion, and eventually ABA biosynthesis. Apparently, the diversity of D27-like enzymatic activity is essential for the optimization of cis/trans ratios, and hence act to maintain apocarotenoid precursor pools. In this review, we discuss the functional divergence and redundancy of D27 paralogues and their potential direct contribution to ABA precursor biosynthesis. We provide updates on their gene expression regulation and alleged Fe-S cluster binding feature. Finally, we conclude that the functional divergence of these paralogues is not fully understood and we provide an outlook on potential directions in research.
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Affiliation(s)
- Zoltán Tolnai
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2462 Martonvásár, Brunszvik u. 2, Hungary
| | - Himani Sharma
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2462 Martonvásár, Brunszvik u. 2, Hungary
| | - Vilmos Soós
- Agricultural Institute, Centre for Agricultural Research, ELKH, 2462 Martonvásár, Brunszvik u. 2, Hungary
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Tong N, Zhang C, Xu X, Zhang Z, Li J, Liu Z, Chen Y, Zhang Z, Huang Y, Lin Y, Lai Z. Genome-Wide Identification and Expression Analysis of DWARF53 Gene in Response to GA and SL Related to Plant Height in Banana. PLANTS (BASEL, SWITZERLAND) 2024; 13:458. [PMID: 38337990 PMCID: PMC10857657 DOI: 10.3390/plants13030458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024]
Abstract
Dwarfing is one of the common phenotypic variations in asexually reproduced progeny of banana, and dwarfed banana is not only windproof and anti-fallout but also effective in increasing acreage yield. As a key gene in the strigolactone signalling pathway, DWARF53 (D53) plays an important role in the regulation of the height of plants. In order to gain insight into the function of the banana D53 gene, this study conducted genome-wide identification of banana D53 gene based on the M. acuminata, M. balbisiana and M. itinerans genome database. Analysis of MaD53 gene expression under high temperature, low temperature and osmotic stress based on transcriptome data and RT-qPCR was used to analyse MaD53 gene expression in different tissues as well as in different concentrations of GA and SL treatments. In this study, we identified three MaD53, three MbD53 and two MiD53 genes in banana. Phylogenetic tree analysis showed that D53 Musa are equally related to D53 Asparagales and Poales. Both high and low-temperature stresses substantially reduced the expression of the MaD53 gene, but osmotic stress treatments had less effect on the expression of the MaD53 gene. GR24 treatment did not significantly promote the height of the banana, but the expression of the MaD53 gene was significantly reduced in roots and leaves. GA treatment at 100 mg/L significantly promoted the expression of the MaD53 gene in roots, but the expression of this gene was significantly reduced in leaves. In this study, we concluded that MaD53 responds to GA and SL treatments, but "Yinniaijiao" dwarf banana may not be sensitive to GA and SL.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (N.T.); (C.Z.); (X.X.); (Z.Z.); (J.L.); (Z.L.); (Y.C.); (Z.Z.); (Y.H.); (Y.L.)
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7
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Takai T. Potential of rice tillering for sustainable food production. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:708-720. [PMID: 37933683 PMCID: PMC10837021 DOI: 10.1093/jxb/erad422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 10/31/2023] [Indexed: 11/08/2023]
Abstract
Tillering, also known as shoot branching, is a fundamental trait for cereal crops such as rice to produce sufficient panicle numbers. Effective tillering that guarantees successful panicle production is essential for achieving high crop yields. Recent advances in molecular biology have revealed the mechanisms underlying rice tillering; however, in rice breeding and cultivation, there remain limited genes or alleles suitable for effective tillering and high yields. A recently identified quantitative trait locus (QTL) called MORE PANICLES 3 (MP3) has been cloned as a single gene and shown to promote tillering and to moderately increase panicle number. This gene is an ortholog of the maize domestication gene TB1, and it has the potential to increase grain yield under ongoing climate change and in nutrient-poor environments. This review reconsiders the potential and importance of tillering for sustainable food production. Thus, I provide an overview of rice tiller development and the currently understood molecular mechanisms that underly it, focusing primarily on the biosynthesis and signaling of strigolactones, effective QTLs, and the importance of MP3 (TB1). The possible future benefits in using promising QTLs such as MP3 to explore agronomic solutions under ongoing climate change and in nutrient-poor environments are also highlighted.
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Affiliation(s)
- Toshiyuki Takai
- Japan International Research Center for Agricultural Sciences (JIRCAS), 305-8686 Tsukuba, Ibaraki, Japan
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Bai J, Guo H, Xiong H, Xie Y, Gu J, Zhao L, Zhao S, Ding Y, Liu L. Strigolactone and abscisic acid synthesis and signaling pathways are enhanced in the wheat oligo-tillering mutant ot1. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2024; 44:12. [PMID: 38313680 PMCID: PMC10837411 DOI: 10.1007/s11032-024-01450-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/10/2024] [Indexed: 02/06/2024]
Abstract
Tiller number greatly contributes to grain yield in wheat. Using ethylmethanesulfonate mutagenesis, we previously discovered the oligo-tillering mutant ot1. The tiller number was significantly lower in ot1 than in the corresponding wild type from the early tillering stage until the heading stage. Compared to the wild type, the thousand-grain weight and grain length were increased by 15.41% and 31.44%, respectively, whereas the plant height and spike length were decreased by 26.13% and 37.25%, respectively. Transcriptomic analysis was conducted at the regreening and jointing stages to identify differential expressed genes (DEGs). Functional enrichment analysis with the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) databases showed differential expression of genes associated with ADP binding, transmembrane transport, and transcriptional regulation during tiller development. Differences in tiller number in ot1 led to the upregulation of genes in the strigolactone (SL) and abscisic acid (ABA) pathways. Specifically, the SL biosynthesis genes DWARF (D27), D17, D10, and MORE AXILLARY GROWTH 1 (MAX1) were upregulated by 3.37- to 8.23-fold; the SL signal transduction genes D14 and D53 were upregulated by 1.81- and 1.32-fold, respectively; the ABA biosynthesis genes 9-CIS-EPOXICAROTENOID DIOXIGENASE 3 (NCED3) and NCED5 were upregulated by 1.66- and 3.4-fold, respectively; and SNF1-REGULATED PROTEIN KINASE2 (SnRK2) and PROTEIN PHOSPHATASE 2C (PP2C) genes were upregulated by 1.30- to 4.79-fold. This suggested that the tiller number reduction in ot1 was due to alterations in plant hormone pathways. Genes known to promote tillering growth were upregulated, whereas those known to inhibit tillering growth were downregulated. For example, PIN-FORMED 9 (PIN9), which promotes tiller development, was upregulated by 8.23-fold in ot1; Ideal Plant Architecture 1 (IPA1), which inhibits tiller development, was downregulated by 1.74-fold. There were no significant differences in the expression levels of TILLER NUMBER 1 (TN1) or TEOSINTE BRANCHED 1 (TB1), indicating that the tiller reduction in ot1 was not controlled by known genes. Our findings provide valuable data for subsequent research into the genetic bases and regulatory mechanisms of wheat tillering. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01450-3.
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Affiliation(s)
- Jiaxing Bai
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huijun Guo
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongchun Xiong
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yongdun Xie
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiayu Gu
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Linshu Zhao
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shirong Zhao
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuping Ding
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Luxiang Liu
- State Key Laboratory of Crop Gene Resources and Breeding, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Yu L, Zhou J, Lin J, Chen M, Liu F, Zheng X, Zhou L, Wang R, Xiao L, Liu Y. Perception of strigolactones and the coordinated phytohormonal regulation on rice ( Oryza sativa) tillering is affected by endogenous ascorbic acid. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23148. [PMID: 38326230 DOI: 10.1071/fp23148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 01/16/2024] [Indexed: 02/09/2024]
Abstract
Phytohormones play a key role in regulating tiller number. Ascorbic acid (Asc)-phytohormone interaction plays a pivotal role in the regulation of senescence. We analysed the relationship between Asc and the enzyme concentrations and gene transcript abundances related to the signal perception of strigolactones (SLs), the contents of four phytohormones (abscisic acid, ABA; jasmonic acid, JA; indole acetic acid, IAA; cytokinin, CTK), the enzyme concentrations and gene transcript abundances related to the synthesis or transportation of these four phytohormones. Our results showed that Asc deficiency leads to the upregulation of enzyme concentrations, gene transcript abundances related to the SL signal perception, ABA synthesis and IAA transport. The altered level of Asc also leads to a change in the contents of ABA, JA, IAA and CTK. These findings support the conclusion that Asc or Asc/DHA play an important role in the signal perception and transduction of SLs, and Asc may affect the coordinated regulation of SL, IAA and CTK on rice (Oryza sativa ) tillering.
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Affiliation(s)
- Le Yu
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Jiankai Zhou
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Junlong Lin
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Mengwei Chen
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Fang Liu
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Xinlin Zheng
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Liping Zhou
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Ruozhong Wang
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Yonghai Liu
- College of Life Science, Zhaoqing University, Zhaoqing, Guangdong 526061, China; and Zhaoqing Branch Center of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Zhaoqing, Guangdong 526238, China
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10
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Kumar S, Sharma N, Sopory SK, Sanan-Mishra N. miRNAs and genes as molecular regulators of rice grain morphology and yield. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108363. [PMID: 38281341 DOI: 10.1016/j.plaphy.2024.108363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/07/2023] [Accepted: 01/10/2024] [Indexed: 01/30/2024]
Abstract
Rice is one of the most consumed crops worldwide and the genetic and molecular basis of its grain yield attributes are well understood. Various studies have identified different yield-related parameters in rice that are regulated by the microRNAs (miRNAs). MiRNAs are endogenous small non-coding RNAs that silence gene expression during or after transcription. They control a variety of biological or genetic activities in plants including growth, development and response to stress. In this review, we have summarized the available information on the genetic control of panicle architecture and grain yield (number and morphology) in rice. The miRNA nodes that are associated with their regulation are also described while focussing on the central role of miR156-SPL node to highlight the co-regulation of two master regulators that determine the fate of panicle development. Since abiotic stresses are known to negatively affect yield, the impact of abiotic stress induced alterations on the levels of these miRNAs are also discussed to highlight the potential of miRNAs for regulating crop yields.
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Affiliation(s)
- Sudhir Kumar
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
| | - Neha Sharma
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
| | - Sudhir K Sopory
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
| | - Neeti Sanan-Mishra
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
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Li S, Baldwin G, Yang C, Lu R, Meng S, Huang J, Wang M, Baldwin IT. Field-work reveals a novel function for MAX2 in a native tobacco's high-light adaptions. PLANT, CELL & ENVIRONMENT 2024; 47:230-245. [PMID: 37750501 DOI: 10.1111/pce.14728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/18/2023] [Accepted: 09/13/2023] [Indexed: 09/27/2023]
Abstract
Laboratory studies have revealed that strigolatone (SL) and karrikin (KAR) signalling mediate responses to abiotic and biotic stresses, and reshape branching architecture that could increase reproductive performance and crop yields. To understand the ecological function of SL and KAR signalling, transgenic lines of wild tobacco Nicotiana attenuata, silenced in SL/KAR biosynthesis/signalling were grown in the glasshouse and in two field plots in the Great Basin Desert in Utah over four field seasons. Of the lines silenced in SL and KAR signalling components (irMAX2, irD14, irKAI2 and irD14 × irKAI2 plants), which exhibited the expected increases in shoot branching, only irMAX2 plants showed a strong leaf-bleaching phenotype when grown in the field. In the field, irMAX2 plants had lower sugar and higher leaf amino acid contents, lower lifetime fitness and were more susceptible to herbivore attack compared to wild-type plants. These irMAX2 phenotypes were not observed in glasshouse-grown plants. Transcriptomic analysis revealed dramatic responses to high-light intensity in irMAX2 leaves in the field: lutein contents decreased, and transcriptional responses to high-intensity light, singlet oxygen and hydrogen peroxide increased. PAR and UV-B manipulations in the field revealed that the irMAX2 bleaching phenotype is reversed by decreasing PAR, but not UV-B fluence. We propose that NaMAX2 functions in high-light adaptation and fitness optimisation by regulating high-light responses independently of its roles in the SL and KAR signalling pathways. The work provides another example of the value of studying the function of genes in the complex environments in which plants evolved, namely nature.
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Affiliation(s)
- Suhua Li
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Gundega Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Caiqiong Yang
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Ruirui Lu
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Shuaishuai Meng
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Jianbei Huang
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Ming Wang
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
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12
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Liu S, Wang J, Song B, Gong X, Liu H, Hu Q, Zhang J, Li Q, Zheng J, Wang H, Xu HE, Li J, Wang B. Conformational Dynamics of the D53-D3-D14 Complex in Strigolactone Signaling. PLANT & CELL PHYSIOLOGY 2023; 64:1046-1056. [PMID: 37384578 PMCID: PMC10858650 DOI: 10.1093/pcp/pcad067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/19/2023] [Accepted: 06/25/2023] [Indexed: 07/01/2023]
Abstract
Strigolactones (SLs) play fundamental roles in regulating plant architecture, which is a major factor determining crop yield. The perception and signal transduction of SLs require the formation of a complex containing the receptor DWARF14 (D14), an F-box protein D3 and a transcriptional regulator D53 in an SL-dependent manner. Structural and biochemical analyses of D14 and its orthologs DAD2 and AtD14, D3 and the complexes of ASK1-D3-AtD14 and D3CTH-D14 have made great contributions to understanding the mechanisms of SL perception. However, structural analyses of D53 and the D53-D3-D14 holo-complex are challenging, and the biochemical mechanism underlying the complex assembly remains poorly understood. Here, we found that apo-D53 was rather flexible and reconstituted the holo-complex containing D53, S-phase kinase-associated protein 1 (SKP1), D3 and D14 with rac-GR24. The cryo-electron microscopy (cryo-EM) structure of SKP1-D3-D14 in the presence of D53 was analyzed and superimposed on the crystal structure of ASK1-D3-AtD14 without D53. No large conformational rearrangement was observed, but a 9Å rotation appeared between D14 and AtD14. Using hydrogen-deuterium exchange monitored by mass spectrometry, we analyzed dynamic motifs of D14, D3 and D53 in the D53-SKP1-D3-D14 complex assembly process and further identified two potential interfaces in D53 that are located in the N and D2 domains, respectively. Together, our results uncovered the dynamic conformational changes and built a model of the holo-complex D53-SKP1-D3-D14, offering valuable information for the biochemical and genetic mechanisms of SL perception and signal transduction.
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Affiliation(s)
| | - Jia Wang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bin Song
- The Drug Research Center of Immunological Diseases, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Xinqi Gong
- Institute for Mathematical Sciences, Renmin University of China, Beijing 100872, China
| | - Huihui Liu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qingliang Hu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Junhui Zhang
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianqian Li
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jie Zheng
- The Drug Research Center of Immunological Diseases, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Hongwei Wang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - H Eric Xu
- The CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jiayang Li
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Yazhouwan National Laboratory, Sanya 572025, China
| | - Bing Wang
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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13
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Mashiguchi K, Morita R, Tanaka K, Kodama K, Kameoka H, Kyozuka J, Seto Y, Yamaguchi S. Activation of Strigolactone Biosynthesis by the DWARF14-LIKE/KARRIKIN-INSENSITIVE2 Pathway in Mycorrhizal Angiosperms, but Not in Arabidopsis, a Non-mycorrhizal Plant. PLANT & CELL PHYSIOLOGY 2023; 64:1066-1078. [PMID: 37494415 PMCID: PMC10504576 DOI: 10.1093/pcp/pcad079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 07/14/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023]
Abstract
Strigolactones (SLs) are a class of plant hormones that regulate many aspects of plant growth and development. SLs also improve symbiosis with arbuscular mycorrhizal fungi (AMF) in the rhizosphere. Recent studies have shown that the DWARF14-LIKE (D14L)/KARRIKIN-INSENSITIVE2 (KAI2) family, paralogs of the SL receptor D14, are required for AMF colonization in several flowering plants, including rice. In this study, we found that (-)-GR5, a 2'S-configured enantiomer of a synthetic SL analog (+)-GR5, significantly activated SL biosynthesis in rice roots via D14L. This result is consistent with a recent report, showing that the D14L pathway positively regulates SL biosynthesis in rice. In fact, the SL levels tended to be lower in the roots of the d14l mutant under both inorganic nutrient-deficient and -sufficient conditions. We also show that the increase in SL levels by (-)-GR5 was observed in other mycorrhizal plant species. In contrast, the KAI2 pathway did not upregulate the SL level and the expression of SL biosynthetic genes in Arabidopsis, a non-mycorrhizal plant. We also examined whether the KAI2 pathway enhances SL biosynthesis in the liverwort Marchantia paleacea, where SL functions as a rhizosphere signaling molecule for AMF. However, the SL level and SL biosynthetic genes were not positively regulated by the KAI2 pathway. These results imply that the activation of SL biosynthesis by the D14L/KAI2 pathway has been evolutionarily acquired after the divergence of bryophytes to efficiently promote symbiosis with AMF, although we cannot exclude the possibility that liverworts have specifically lost this regulatory system.
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Affiliation(s)
- Kiyoshi Mashiguchi
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Ryo Morita
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Kai Tanaka
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Kyoichi Kodama
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Hiromu Kameoka
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Junko Kyozuka
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Yoshiya Seto
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
- School of Agriculture, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki, Kanagawa, 214-8571 Japan
| | - Shinjiro Yamaguchi
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
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14
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Wong ACS, van Oosterom EJ, Godwin ID, Borrell AK. Integrating stay-green and PIN-FORMED genes: PIN-FORMED genes as potential targets for designing climate-resilient cereal ideotypes. AOB PLANTS 2023; 15:plad040. [PMID: 37448862 PMCID: PMC10337860 DOI: 10.1093/aobpla/plad040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Plant architecture modification (e.g. short-stature crops) is one of the key outcomes of modern crop breeding for high-yielding crop varieties. In cereals, delayed senescence, or stay-green, is an important trait that enables post-anthesis drought stress adaptation. Stay-green crops can prolong photosynthetic capacity during grain-filling period under post-anthesis drought stress, which is essential to ensure grain yield is not impacted under drought stress conditions. Although various stay-green quantitative trait loci have been identified in cereals, the underlying molecular mechanisms regulating stay-green remain elusive. Recent advances in various gene-editing technologies have provided avenues to fast-track crop improvement, such as the breeding of climate-resilient crops in the face of climate change. We present in this viewpoint the focus on using sorghum as the model cereal crop, to study PIN-FORMED (PIN) auxin efflux carriers as means to modulate plant architecture, and the potential to employ it as an adaptive strategy to address the environmental challenges posed by climate uncertainties.
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Affiliation(s)
| | - Erik J van Oosterom
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, 306 Carmody Road, Brisbane, Queensland 4072, Australia
| | - Ian D Godwin
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, 306 Carmody Road, Brisbane, Queensland 4072, Australia
| | - Andrew K Borrell
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Hermitage Research Facility, 604 Yangan Road, Warwick, Queensland 4370, Australia
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15
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Yi F, Song A, Cheng K, Liu J, Wang C, Shao L, Wu S, Wang P, Zhu J, Liang Z, Chang Y, Chu Z, Cai C, Zhang X, Wang P, Chen A, Xu J, Burritt DJ, Herrera-Estrella L, Tran LSP, Li W, Cai Y. Strigolactones positively regulate Verticillium wilt resistance in cotton via crosstalk with other hormones. PLANT PHYSIOLOGY 2023; 192:945-966. [PMID: 36718522 PMCID: PMC10231467 DOI: 10.1093/plphys/kiad053] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 06/01/2023]
Abstract
Verticillium wilt caused by Verticillium dahliae is a serious vascular disease in cotton (Gossypium spp.). V. dahliae induces the expression of the CAROTENOID CLEAVAGE DIOXYGENASE 7 (GauCCD7) gene involved in strigolactone (SL) biosynthesis in Gossypium australe, suggesting a role for SLs in Verticillium wilt resistance. We found that the SL analog rac-GR24 enhanced while the SL biosynthesis inhibitor TIS108 decreased cotton resistance to Verticillium wilt. Knock-down of GbCCD7 and GbCCD8b genes in island cotton (Gossypium barbadense) decreased resistance, whereas overexpression of GbCCD8b in upland cotton (Gossypium hirsutum) increased resistance to Verticillium wilt. Additionally, Arabidopsis (Arabidopsis thaliana) SL mutants defective in CCD7 and CCD8 putative orthologs were susceptible, whereas both Arabidopsis GbCCD7- and GbCCD8b-overexpressing plants were more resistant to Verticillium wilt than wild-type (WT) plants. Transcriptome analyses showed that several genes related to the jasmonic acid (JA)- and abscisic acid (ABA)-signaling pathways, such as MYELOCYTOMATOSIS 2 (GbMYC2) and ABA-INSENSITIVE 5, respectively, were upregulated in the roots of WT cotton plants in responses to rac-GR24 and V. dahliae infection but downregulated in the roots of both GbCCD7- and GbCCD8b-silenced cotton plants. Furthermore, GbMYC2 suppressed the expression of GbCCD7 and GbCCD8b by binding to their promoters, which might regulate the homeostasis of SLs in cotton through a negative feedback loop. We also found that GbCCD7- and GbCCD8b-silenced cotton plants were impaired in V. dahliae-induced reactive oxygen species (ROS) accumulation. Taken together, our results suggest that SLs positively regulate cotton resistance to Verticillium wilt through crosstalk with the JA- and ABA-signaling pathways and by inducing ROS accumulation.
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Affiliation(s)
- Feifei Yi
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Aosong Song
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Kai Cheng
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jinlei Liu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Chenxiao Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Lili Shao
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Shuang Wu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Ping Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jiaxuan Zhu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Zhilin Liang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Ying Chang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Zongyan Chu
- Cotton Institution, Kaifeng Academy of Agriculture and Forestry, Kaifeng 475000, China
| | - Chaowei Cai
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Xuebin Zhang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Pei Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Aimin Chen
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jin Xu
- College of Horticulture, Shanxi Agricultural University, Taigu 030801, China
| | - David J Burritt
- Department of Botany, University of Otago, Dunedin 9054, New Zealand
| | - Luis Herrera-Estrella
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
- Unidad de Genomica Avanzada, Centro de Investigaciony de Estudios Avanzados del Intituto Politecnico Nacional, Irapuato 36821, Mexico
| | - Lam-Son Phan Tran
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
| | - Weiqiang Li
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Jilin Da’an Agro-ecosystem National Observation Research Station, Changchun 130102, China
| | - Yingfan Cai
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
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16
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Takai T, Taniguchi Y, Takahashi M, Nagasaki H, Yamamoto E, Hirose S, Hara N, Akashi H, Ito J, Arai-Sanoh Y, Hori K, Fukuoka S, Sakai H, Tokida T, Usui Y, Nakamura H, Kawamura K, Asai H, Ishizaki T, Maruyama K, Mochida K, Kobayashi N, Kondo M, Tsuji H, Tsujimoto Y, Hasegawa T, Uga Y. MORE PANICLES 3, a natural allele of OsTB1/FC1, impacts rice yield in paddy fields at elevated CO 2 levels. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:729-742. [PMID: 36974032 DOI: 10.1111/tpj.16143] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 02/06/2023] [Indexed: 05/27/2023]
Abstract
Improving crop yield potential through an enhanced response to rising atmospheric CO2 levels is an effective strategy for sustainable crop production in the face of climate change. Large-sized panicles (containing many spikelets per panicle) have been a recent ideal plant architecture (IPA) for high-yield rice breeding. However, few breeding programs have proposed an IPA under the projected climate change. Here, we demonstrate through the cloning of the rice (Oryza sativa) quantitative trait locus for MORE PANICLES 3 (MP3) that the improvement in panicle number increases grain yield at elevated atmospheric CO2 levels. MP3 is a natural allele of OsTB1/FC1, previously reported as a negative regulator of tiller bud outgrowth. The temperate japonica allele advanced the developmental process in axillary buds, moderately promoted tillering, and increased the panicle number without negative effects on the panicle size or culm thickness in a high-yielding indica cultivar with large-sized panicles. The MP3 allele, containing three exonic polymorphisms, was observed in most accessions in the temperate japonica subgroups but was rarely observed in the indica subgroup. No selective sweep at MP3 in either the temperate japonica or indica subgroups suggested that MP3 has not been involved and utilized in artificial selection during domestication or breeding. A free-air CO2 enrichment experiment revealed a clear increase of grain yield associated with the temperate japonica allele at elevated atmospheric CO2 levels. Our findings show that the moderately increased panicle number combined with large-sized panicles using MP3 could be a novel IPA and contribute to an increase in rice production under climate change with rising atmospheric CO2 levels.
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Affiliation(s)
- Toshiyuki Takai
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Yojiro Taniguchi
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8634, Japan
| | - Megumu Takahashi
- Institute of Vegetable and Floriculture Science, NARO, Tsukuba, Ibaraki, 305-8519, Japan
| | - Hideki Nagasaki
- Kazusa DNA Research Institute, Kisarazu, Chiba, 292-0818, Japan
| | - Eiji Yamamoto
- Meiji University, Kawasaki, Kanagawa, 214-8571, Japan
| | - Sakiko Hirose
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8634, Japan
| | - Naho Hara
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8634, Japan
| | - Hiroko Akashi
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, 244-0813, Japan
| | - Jun Ito
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, 244-0813, Japan
| | - Yumiko Arai-Sanoh
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Kiyosumi Hori
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Shuichi Fukuoka
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Hidemitsu Sakai
- Institute for Agro-Environmental Sciences, NARO, Tsukuba, Ibaraki, 305-8604, Japan
| | - Takeshi Tokida
- Institute for Agro-Environmental Sciences, NARO, Tsukuba, Ibaraki, 305-8604, Japan
| | - Yasuhiro Usui
- Central Region Agricultural Research Center, NARO, Tsukuba, Ibaraki, 305-8666, Japan
| | | | - Kensuke Kawamura
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Hidetoshi Asai
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Takuma Ishizaki
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Kyonoshin Maruyama
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Keiichi Mochida
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, 244-0813, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan
- School of Information and Data Sciences, Nagasaki University, Nagasaki, Nagasaki, 852-8521, Japan
| | - Nobuya Kobayashi
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Motohiko Kondo
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, 464-8601, Japan
| | - Hiroyuki Tsuji
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Kanagawa, 244-0813, Japan
- Bioscience and Biotechnology Center, Nagoya University, Nagoya, Aichi, 464-8601, Japan
| | - Yasuhiro Tsujimoto
- Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Toshihiro Hasegawa
- Institute for Agro-Environmental Sciences, NARO, Tsukuba, Ibaraki, 305-8604, Japan
| | - Yusaku Uga
- Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
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17
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Zhang Q, Xie J, Zhu X, Ma X, Yang T, Khan NU, Zhang S, Liu M, Li L, Liang Y, Pan Y, Li D, Li J, Li Z, Zhang H, Zhang Z. Natural variation in Tiller Number 1 affects its interaction with TIF1 to regulate tillering in rice. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:1044-1057. [PMID: 36705337 PMCID: PMC10106862 DOI: 10.1111/pbi.14017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/15/2022] [Accepted: 01/23/2023] [Indexed: 05/04/2023]
Abstract
Tiller number per plant-a cardinal component of ideal plant architecture-affects grain yield potential. Thus, alleles positively affecting tillering must be mined to promote genetic improvement. Here, we report a Tiller Number 1 (TN1) protein harbouring a bromo-adjacent homology domain and RNA recognition motifs, identified through genome-wide association study of tiller numbers. Natural variation in TN1 affects its interaction with TIF1 (TN1 interaction factor 1) to affect DWARF14 expression and negatively regulate tiller number in rice. Further analysis of variations in TN1 among indica genotypes according to geographical distribution revealed that low-tillering varieties with TN1-hapL are concentrated in Southeast Asia and East Asia, whereas high-tillering varieties with TN1-hapH are concentrated in South Asia. Taken together, these results indicate that TN1 is a tillering regulatory factor whose alleles present apparent preferential utilization across geographical regions. Our findings advance the molecular understanding of tiller development.
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Affiliation(s)
- Quan Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Jianyin Xie
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Xiaoyang Zhu
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Xiaoqian Ma
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Tao Yang
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Najeeb Ullah Khan
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Shuyang Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Miaosong Liu
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Lin Li
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Yuntao Liang
- Guangxi Key Laboratory of Rice Genetics and BreedingRice Research Institute of Guangxi Academy of Agricultural SciencesNanningGuangxiChina
| | - Yinghua Pan
- Guangxi Key Laboratory of Rice Genetics and BreedingRice Research Institute of Guangxi Academy of Agricultural SciencesNanningGuangxiChina
| | - Danting Li
- Guangxi Key Laboratory of Rice Genetics and BreedingRice Research Institute of Guangxi Academy of Agricultural SciencesNanningGuangxiChina
| | - Jinjie Li
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Zichao Li
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
- Sanya Institute of China Agricultural UniversitySanyaChina
| | - Hongliang Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
- Sanya Institute of China Agricultural UniversitySanyaChina
- Sanya Nanfan Research Institute of Hainan UniversitySanyaChina
| | - Zhanying Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization/Beijing Key Laboratory of Crop Genetic Improvement, College of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
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18
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Guercio AM, Palayam M, Shabek N. Strigolactones: diversity, perception, and hydrolysis. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2023; 22:339-360. [PMID: 37201177 PMCID: PMC10191409 DOI: 10.1007/s11101-023-09853-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 01/03/2023] [Indexed: 05/20/2023]
Abstract
Strigolactones (SLs) are a unique and novel class of phytohormones that regulate numerous processes of growth and development in plants. Besides their endogenous functions as hormones, SLs are exuded by plant roots to stimulate critical interactions with symbiotic fungi but can also be exploited by parasitic plants to trigger their seed germination. In the past decade, since their discovery as phytohormones, rapid progress has been made in understanding the SL biosynthesis and signaling pathway. Of particular interest are the diversification of natural SLs and their exact mode of perception, selectivity, and hydrolysis by their dedicated receptors in plants. Here we provide an overview of the emerging field of SL perception with a focus on the diversity of canonical, non-canonical, and synthetic SL probes. Moreover, this review offers useful structural insights into SL perception, the precise molecular adaptations that define receptor-ligand specificities, and the mechanisms of SL hydrolysis and its attenuation by downstream signaling components.
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Affiliation(s)
- Angelica M Guercio
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA 95616, USA
| | - Malathy Palayam
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA 95616, USA
| | - Nitzan Shabek
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA 95616, USA
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19
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Guan JC, Li C, Flint-Garcia S, Suzuki M, Wu S, Saunders JW, Dong L, Bouwmeester HJ, McCarty DR, Koch KE. Maize domestication phenotypes reveal strigolactone networks coordinating grain size evolution with kernel-bearing cupule architecture. THE PLANT CELL 2023; 35:1013-1037. [PMID: 36573016 PMCID: PMC10015167 DOI: 10.1093/plcell/koac370] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
The maize (Zea mays) ear represents one of the most striking domestication phenotypes in any crop species, with the cob conferring an exceptional yield advantage over the ancestral form of teosinte. Remodeling of the grain-bearing surface required profound developmental changes. However, the underlying mechanisms remain unclear and can only be partly attributed to the known domestication gene Teosinte glume architecture 1 (Tga1). Here we show that a more complete conversion involves strigolactones (SLs), and that these are prominent players not only in the Tga1 phenotype but also other domestication features of the ear and kernel. Genetic combinations of a teosinte tga1 allele with three SL-related mutants progressively enhanced ancestral morphologies. The SL mutants, in addition to modulating the tga1 phenotype, also reshaped kernel-bearing pedicels and cupules in a teosinte-like manner. Genetic and molecular evidence are consistent with SL regulation of TGA1, including direct interaction of TGA1 with components of the SL-signaling system shown here to mediate TGA1 availability by sequestration. Roles of the SL network extend to enhancing maize seed size and, importantly, coordinating increased kernel growth with remodeling of protective maternal tissues. Collectively, our data show that SLs have central roles in releasing kernels from restrictive maternal encasement and coordinating other factors that increase kernel size, physical support, and their exposure on the grain-bearing surface.
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Affiliation(s)
- Jiahn-Chou Guan
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Changsheng Li
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Sherry Flint-Garcia
- United States Department of Agriculture – Agricultural Research Service, Columbia, Missouri 65211, USA
| | - Masaharu Suzuki
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Shan Wu
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
| | - Jonathan W Saunders
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
| | - Lemeng Dong
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Harro J Bouwmeester
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Donald R McCarty
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Karen E Koch
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
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20
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Hellens AM, Chabikwa TG, Fichtner F, Brewer PB, Beveridge CA. Identification of new potential downstream transcriptional targets of the strigolactone pathway including glucosinolate biosynthesis. PLANT DIRECT 2023; 7:e486. [PMID: 36945724 PMCID: PMC10024969 DOI: 10.1002/pld3.486] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/19/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Strigolactones regulate shoot branching and many aspects of plant growth, development, and allelopathy. Strigolactones are often discussed alongside auxin because they work together to inhibit shoot branching. However, the roles and mechanisms of strigolactones and how they act independently of auxin are still elusive. Additionally, there is still much in general to be discovered about the network of molecular regulators and their interactions in response to strigolactones. Here, we conducted an experiment in Arabidopsis with physiological treatments and strigolactone mutants to determine transcriptional pathways associated with strigolactones. The three physiological treatments included shoot tip removal with and without auxin treatment and treatment of intact plants with the auxin transport inhibitor, N-1-naphthylphthalamic acid (NPA). We identified the glucosinolate biosynthesis pathway as being upregulated across strigolactone mutants indicating strigolactone-glucosinolate crosstalk. Additionally, strigolactone application cannot restore the highly branched phenotype observed in glucosinolate biosynthesis mutants, placing glucosinolate biosynthesis downstream of strigolactone biosynthesis. Oxidative stress genes were enriched across the experiment suggesting that this process is mediated through multiple hormones. Here, we also provide evidence supporting non-auxin-mediated, negative feedback on strigolactone biosynthesis. Increases in strigolactone biosynthesis gene expression seen in strigolactone mutants could not be fully restored by auxin. By contrast, auxin could fully restore auxin-responsive gene expression increases, but not sugar signaling-related gene expression. Our data also point to alternative roles of the strigolactone biosynthesis genes and potential new signaling functions of strigolactone precursors. In this study, we identify a strigolactone-specific regulation of glucosinolate biosynthesis genes indicating that the two are linked and may work together in regulating stress and shoot ranching responses in Arabidopsis. Additionally, we provide evidence for non-auxinmediated feedback on strigolactone biosynthesis and discuss this in the context of sugar signaling.
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Affiliation(s)
- Alicia M. Hellens
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
| | - Tinashe G. Chabikwa
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- QIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia
| | - Franziska Fichtner
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
- Institute for Plant BiochemistryHeinrich Heine UniversityDüsseldorfGermany
| | - Philip B. Brewer
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
- School of Agriculture, Food and WineThe University of AdelaideGlen OsmondSouth AustraliaAustralia
| | - Christine A. Beveridge
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
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21
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Zhang R, Zheng D, Feng N, Qiu QS, Zhou H, Liu M, Li Y, Meng F, Huang X, Huang A, Li Y. Prohexadione calcium enhances rice growth and tillering under NaCl stress. PeerJ 2023; 11:e14804. [PMID: 36778152 PMCID: PMC9910188 DOI: 10.7717/peerj.14804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/05/2023] [Indexed: 02/09/2023] Open
Abstract
Salt stress affects crop quality and reduces crop yields, and growth regulators enhance salt tolerance of crop plants. In this report, we examined the effects of prohexadione-calcium (Pro-Ca) on improving rice (Oryza sativa L.) growth and tillering under salt stress. We found that NaCl stress inhibited the growth of two rice varieties and increased malondialdehyde (MDA) levels, electrolyte leakage, and the activities of the antioxidant enzymes. Foliar application of Pro-Ca reduced seedling height and increased stem base width and lodging resistance of rice. Further analyses showed that Pro-Ca application reduced MDA content, electrolyte leakage, and membrane damage in rice leaves under NaCl stress. Pro-Ca enhanced the net photosynthetic rate (Pn), stomatal conductance (Gs), and intercellular CO2 concentration (Ci) of rice seedlings, while increasing the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbic acid peroxidase (APX) at the tillering stage under salt stress. Overall, Pro-Ca improves salt tolerance of rice seedlings at the tillering stage by enhancing lodging resistance, reducing membrane damages, and enhancing photosynthesis and antioxidant capacities of rice seedlings.
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Affiliation(s)
- Rongjun Zhang
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - Dianfeng Zheng
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China,South China, National Saline-tolerant Rice Technology Innovation Center, Zhanjiang, China,Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
| | - Naijie Feng
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China,South China, National Saline-tolerant Rice Technology Innovation Center, Zhanjiang, China,Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
| | - Quan-Sheng Qiu
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China,School of Life Sciences, Lanzhou University, MOE Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou, Gansu, China
| | - Hang Zhou
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China,South China, National Saline-tolerant Rice Technology Innovation Center, Zhanjiang, China
| | - Meiling Liu
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - Yao Li
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - Fengyan Meng
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - XiXin Huang
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - Anqi Huang
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
| | - Yixiang Li
- Guangdong Ocean University, College of Coastal Agricultural Sciences, Zhanjiang, China
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22
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Burgess AJ, Majda M. Pieces of the 3D puzzle: Identification of genes underlying rice canopy architecture. PLANT PHYSIOLOGY 2023; 191:1-2. [PMID: 36227128 PMCID: PMC9806576 DOI: 10.1093/plphys/kiac474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Affiliation(s)
| | - Mateusz Majda
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
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23
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Cheng X, Huang Y, Tan Y, Tan L, Yin J, Zou G. Potentially Useful Dwarfing or Semi-dwarfing Genes in Rice Breeding in Addition to the sd1 Gene. RICE (NEW YORK, N.Y.) 2022; 15:66. [PMID: 36542176 PMCID: PMC9772376 DOI: 10.1186/s12284-022-00615-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
The "Green revolution" gene sd1 has been used widely in the breeding of modern rice varieties for over half a century. The application of this gene has increased rice yields and thereby supported a significant proportion of the global population. The use of a single gene, however, has raised concerns in the scientific community regarding its durability, especially given the bottleneck in genetic background and the need for large input of fertilizer. New dwarfing or semi-dwarfing genes are needed to alleviate our dependence on the sole "Green revolution" gene. In the past few years, several new dwarfing and semi-dwarfing genes as well as their mutants have been reported. Here, we provide an extensive review of the recent discoveries concerning newly identified genes that are potentially useful in rice breeding, including methods employed to create and effectively screen new rice mutants, the phenotypic characteristics of the new dwarfing and semi-dwarfing mutants, potential values of the new dwarfing and semi-dwarfing genes in rice breeding, and potential molecular mechanisms associated with the newly identified genes.
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Affiliation(s)
- Xiaoyan Cheng
- National Engineering Research Center of Rice (Nanchang), Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, Jiangxi, People's Republic of China
- Jiangxi Tiandao Liangan Seed Industry Co., Ltd., 568 South Huancheng Rd., Yuanzhou Dist., Yi Chun, 336000, Jiangxi, People's Republic of China
| | - Yongping Huang
- National Engineering Research Center of Rice (Nanchang), Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, Jiangxi, People's Republic of China
| | - Yong Tan
- Jiangxi Tiandao Liangan Seed Industry Co., Ltd., 568 South Huancheng Rd., Yuanzhou Dist., Yi Chun, 336000, Jiangxi, People's Republic of China
| | - Lin Tan
- Jiangxi Tiandao Liangan Seed Industry Co., Ltd., 568 South Huancheng Rd., Yuanzhou Dist., Yi Chun, 336000, Jiangxi, People's Republic of China
| | - Jianhua Yin
- National Engineering Research Center of Rice (Nanchang), Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, Jiangxi, People's Republic of China
| | - Guoxing Zou
- National Engineering Research Center of Rice (Nanchang), Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, Jiangxi, People's Republic of China.
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24
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Duan H, Li J, Sun Y, Xiong X, Sun L, Li W, Gao J, Li N, Zhang J, Cui J, Fu Z, Zhang X, Tang J. Candidate loci for leaf angle in maize revealed by a combination of genome-wide association study and meta-analysis. Front Genet 2022; 13:1004211. [PMID: 36437932 PMCID: PMC9691904 DOI: 10.3389/fgene.2022.1004211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/28/2022] [Indexed: 11/13/2022] Open
Abstract
Leaf angle (LA) is a key component of maize plant architecture that can simultaneously govern planting density and improve final yield. However, the genetic mechanisms underlying LA have not been fully addressed. To broaden our understanding of its genetic basis, we scored three LA-related traits on upper, middle, and low leaves of 492 maize inbred lines in five environments. Phenotypic data revealed that the three LA-related traits were normally distributed, and significant variation was observed among environments and genotypes. A genome-wide association study (GWAS) was then performed to dissect the genetic factors that control natural variation in maize LA. In total, 85 significant SNPs (involving 32 non-redundant QTLs) were detected (p ≤ 2.04 × 10–6), and individual QTL explained 4.80%–24.09% of the phenotypic variation. Five co-located QTL were detected in at least two environments, and two QTLs were co-located with multiple LA-related traits. Forty-seven meta-QTLs were identified based on meta-analysis combing 294 LA-related QTLs extracted from 18 previously published studies, 816 genes were identified within these meta-QTLs, and seven co-located QTLs were jointly identified by both GWAS and meta-analysis. ZmULA1 was located in one of the co-located QTLs, qLA7, and its haplotypes, hap1 and hap2, differed significantly in LA-related traits. Interestingly, the temperate materials with hap2 had smallest LA. Finally, we also performed haplotype analysis using the reported genes that regulate LA, and identified a lot of maize germplasms that aggregated favorable haplotypes. These results will be helpful for elucidating the genetic basis of LA and breeding new maize varieties with ideal plant architecture.
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Affiliation(s)
- Haiyang Duan
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Jianxin Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Yan Sun
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xuehang Xiong
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Li Sun
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Wenlong Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Jionghao Gao
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Na Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Junli Zhang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Jiangkuan Cui
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Zhiyuan Fu
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xuehai Zhang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- *Correspondence: Xuehai Zhang, ; Jihua Tang,
| | - Jihua Tang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- The Shennong Laboratory, Zhengzhou, China
- *Correspondence: Xuehai Zhang, ; Jihua Tang,
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25
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Chiu CH, Roszak P, Orvošová M, Paszkowski U. Arbuscular mycorrhizal fungi induce lateral root development in angiosperms via a conserved set of MAMP receptors. Curr Biol 2022; 32:4428-4437.e3. [PMID: 36115339 DOI: 10.1016/j.cub.2022.08.069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/06/2022] [Accepted: 08/23/2022] [Indexed: 10/14/2022]
Abstract
Root systems regulate their branching patterns in response to environmental stimuli. Lateral root development in both monocotyledons and dicotyledons is enhanced in response to inoculation with arbuscular mycorrhizal (AM) fungi, which has been interpreted as a developmental response to specific, symbiosis-activating chitinaceous signals. Here, we report that generic instead of symbiosis-specific, chitin-derived molecules trigger lateral root formation. We demonstrate that this developmental response requires the well-known microbe-associated molecular pattern (MAMP) receptor, ChitinElicitorReceptorKinase 1 (CERK1), in rice, Medicago truncatula, and Lotus japonicus, as well as the non-host of AM fungi, Arabidopsis thaliana, lending further support for a broadly conserved signal transduction mechanism across angiosperms. Using rice mutants impaired in strigolactone biosynthesis and signaling, we show that strigolactone signaling is necessary to regulate this developmental response. Rice CERK1 operates together with either Chitin Elicitor Binding Protein (CEBiP) or Nod Factor Receptor 5 (NFR5) in immunity and symbiosis signaling, respectively; for the lateral root response, however, all three LysM receptors are required. Our work, therefore, reveals an overlooked but a conserved role of LysM receptors integrating MAMP perception with developmental responses in plants, an ability that might influence the interaction between roots and the rhizosphere biota.
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Affiliation(s)
- Chai Hao Chiu
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, 93 Lawrence Weaver Road, Cambridge CB3 0LE, UK.
| | - Pawel Roszak
- Sainsbury Laboratory, University of Cambridge, Bateman Street, Cambridge CB2 1LR, UK
| | - Martina Orvošová
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, 93 Lawrence Weaver Road, Cambridge CB3 0LE, UK
| | - Uta Paszkowski
- Crop Science Centre, Department of Plant Sciences, University of Cambridge, 93 Lawrence Weaver Road, Cambridge CB3 0LE, UK.
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26
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Liu T, Zhang X, Zhang H, Cheng Z, Liu J, Zhou C, Luo S, Luo W, Li S, Xing X, Chang Y, Shi C, Ren Y, Zhu S, Lei C, Guo X, Wang J, Zhao Z, Wang H, Zhai H, Lin Q, Wan J. Dwarf and High Tillering1 represses rice tillering through mediating the splicing of D14 pre-mRNA. THE PLANT CELL 2022; 34:3301-3318. [PMID: 35670739 PMCID: PMC9421477 DOI: 10.1093/plcell/koac169] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 05/11/2022] [Indexed: 06/09/2023]
Abstract
Strigolactones (SLs) constitute a class of plant hormones that regulate many aspects of plant development, including repressing tillering in rice (Oryza sativa). However, how SL pathways are regulated is still poorly understood. Here, we describe a rice mutant dwarf and high tillering1 (dht1), which exhibits pleiotropic phenotypes (such as dwarfism and increased tiller numbers) similar to those of mutants defective in SL signaling. We show that DHT1 encodes a monocotyledon-specific hnRNP-like protein that acts as a previously unrecognized intron splicing factor for many precursor mRNAs (pre-mRNAs), including for the SL receptor gene D14. We find that the dht1 (DHT1I232F) mutant protein is impaired in its stability and RNA binding activity, causing defective splicing of D14 pre-mRNA and reduced D14 expression, and consequently leading to the SL signaling-defective phenotypes. Overall, our findings deepen our understanding of the functional diversification of hnRNP-like proteins and establish a connection between posttranscriptional splicing and SL signaling in the regulation of plant development.
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Affiliation(s)
| | | | | | | | - Jun Liu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chunlei Zhou
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Sheng Luo
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Weifeng Luo
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shuai Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xinxin Xing
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yanqi Chang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cuilan Shi
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yulong Ren
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shanshan Zhu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cailin Lei
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiuping Guo
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jie Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhichao Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Haiyang Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Huqu Zhai
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Qibing Lin
- Author for correspondence: (J.W.), (Q.L.)
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27
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Zha M, Zhao Y, Wang Y, Chen B, Tan Z. Strigolactones and Cytokinin Interaction in Buds in the Control of Rice Tillering. FRONTIERS IN PLANT SCIENCE 2022; 13:837136. [PMID: 35845690 PMCID: PMC9286680 DOI: 10.3389/fpls.2022.837136] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Shoot branching is among the most crucial morphological traits in rice (Oryza sativa L.) and is physiologically modulated by auxins, cytokinins (CKs), and strigolactones (SLs) cumulatively in rice. A number of studies focused on the interplay of these three hormones in regulating rice tiller extension. The present study primarily aimed at determining the impact of different treatments, which were used to regulate rice tiller and axillary bud development on node 2 at the tillering stage and full heading stage, respectively. Transcription levels of several genes were quantified through qRT-PCR analysis, and an endogenous auxin and four types of CKs were determined through LC-MS/MS. Both nutrient deficiency and exogenous SL supply were found to inhibit rice tiller outgrowth by reducing the CK content in the tiller buds. Furthermore, supplying the inhibitor of both exogenous SLs and endogenous SL synthesis could also affect the expression level of OsCKX genes but not the OsIPT genes. Comparison of OsCKX gene expression pattern under exogenous SL and CK supply suggested that the induction of OsCKX expression was most likely via a CK-induced independent pathway. These results combined with the expression of CK type-A RR genes in bud support a role for SLs in regulating bud outgrowth through the regulation of local CK levels. SL functioned antagonistically with CK in regulating the outgrowth of buds on node 2, by promoting the OsCKX gene expression in buds.
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Affiliation(s)
- Manrong Zha
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou, China
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou, China
| | - Yanhui Zhao
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou, China
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou, China
| | - Yan Wang
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou, China
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou, China
| | - Bingxian Chen
- Guangdong Key Lab for Crop Germplasm Resources Preservation and Utilization, Guangzhou, China
| | - Zecheng Tan
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou, China
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou, China
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Zhao J, Liu X, Wang M, Xie L, Wu Z, Yu J, Wang Y, Zhang Z, Jia Y, Liu Q. The miR528-D3 Module Regulates Plant Height in Rice by Modulating the Gibberellin and Abscisic Acid Metabolisms. RICE (NEW YORK, N.Y.) 2022; 15:27. [PMID: 35596029 PMCID: PMC9123139 DOI: 10.1186/s12284-022-00575-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 05/13/2022] [Indexed: 05/02/2023]
Abstract
Plant height, as one of the important agronomic traits of rice, is closely related to yield. In recent years, plant height-related genes have been characterized and identified, among which the DWARF3 (D3) gene is one of the target genes of miR528, and regulates rice plant height and tillering mainly by affecting strigolactone (SL) signal transduction. However, it remains unknown whether the miR528 and D3 interaction functions in controlling plant height, and the underlying regulatory mechanism in rice. In this study, we found that the plant height, internode length, and cell length of internodes of d3 mutants and miR528-overexpressing (OE-miR528) lines were greatly shorter than WT, D3-overexpressing (OE-D3), and miR528 target mimicry (OE-MIM528) transgenic plants. Knockout of D3 gene (d3 mutants) or miR528-overexpressing (OE-miR528) triggers a substantial reduction of gibberellin (GA) content, but a significant increase of abscisic acid (ABA) accumulation than in WT. The d3 and OE-miR528 transgenic plants were much more sensitive to GA, but less sensitive to ABA than WT. Moreover, the expression level of GA biosynthesis-related key genes, including OsCPS1, OsCPS2, OsKO2 and OsKAO was remarkably higher in OE-D3 plants, while the NECD2 expression, a key gene involved in ABA biosynthesis, was significantly higher in d3 mutants than in WT and OE-D3 plants. The results indicate that the miR528-D3 module negatively regulates plant height in rice by modulating the GA and ABA homeostasis, thereby further affecting the elongation of internodes, and resulting in lower plant height, which adds a new regulatory role to the D3-mediated plant height controlling in rice.
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Affiliation(s)
- Juan Zhao
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Xing Liu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Mei Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Lingjuan Xie
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Zhengxin Wu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Jiuming Yu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Yuchen Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Zhiqiao Zhang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Yufang Jia
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China
| | - Qingpo Liu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Lin'an Hangzhou, 311300, People's Republic of China.
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Yu X, Lara NAH, Carbajal EM, Milla-Lewis SR. QTL mapping of morphological characteristics that correlated to drought tolerance in St. Augustinegrass. PLoS One 2022; 17:e0268004. [PMID: 35500017 PMCID: PMC9060340 DOI: 10.1371/journal.pone.0268004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 04/20/2022] [Indexed: 11/18/2022] Open
Abstract
St. Augustinegrass is a warm-season grass species widely utilized as turf in the southeastern U.S. It shows significant variation in plant growth and morphological characteristics, some of which are potentially associated with drought tolerance. However, the genetic basis of these variations is not well understood. Detecting quantitative trait loci (QTL) associated with morphological traits will provide a foundation for the application of genetic and molecular breeding in St. Augustinegrass. In this study, we report QTL associated with morphological traits, including leaf blade width (LW), leaf blade length (LL), canopy density (CD), and shoot growth orientation (SGO) in a St. Augustinegrass ‘Raleigh’ x ‘Seville’ mapping population containing 115 F1 hybrids. Phenotypic data were collected from one greenhouse and two field trials. Single and joint trial analyses were performed, finding significant phenotypic variance among the hybrids for all traits. Interval mapping (IM) and multiple QTL method (MQM) analysis detected seven QTL for CD, four for LL, five for LW, and two for SGO, which were distributed on linkage groups RLG1, RLG9, SLG3, SLG7, SLG8 and SLG9. In addition, three genomic regions where QTL colocalized were identified on Raleigh LG1 and Seville LG3. One genomic region on Seville LG3 overlapped with two previously reported drought-related QTL for leaf relative water content (RWC) and percent green cover (GC). Several candidate genes related to plant development and drought stress response were identified within QTL intervals. The QTL identified in this study represent a first step in identifying genes controlling morphological traits that might accelerate progress in selection of St. Augustinegrass lines with lower water usage.
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Affiliation(s)
- Xingwang Yu
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
- * E-mail:
| | - Nicolas A. H. Lara
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Esdras M. Carbajal
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Susana R. Milla-Lewis
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
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Tal L, Palayam M, Ron M, Young A, Britt A, Shabek N. A conformational switch in the SCF-D3/MAX2 ubiquitin ligase facilitates strigolactone signalling. NATURE PLANTS 2022; 8:561-573. [PMID: 35484202 DOI: 10.1038/s41477-022-01145-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 03/28/2022] [Indexed: 05/22/2023]
Abstract
Strigolactones (SLs) are a class of plant hormones that regulate numerous processes of growth and development. SL perception and signal activation involves interaction between F-box E3 ubiquitin ligase D3/MAX2 and DWARF14 (D14) α/β-hydrolase in a SL-dependent manner and targeting of D53/SMXL6/7/8 transcriptional repressors (SMXLs) for proteasome-mediated degradation. D3/MAX2 has been shown to exist in multiple conformational states in which the C-terminal helix (CTH) undergoes a closed-to-open dynamics and regulates D14 binding and SL perception. Despite the multiple modes of D3-D14 interactions found in vitro, the residues that regulate the conformational switch of D3/MAX2 CTH in targeting D53/SMXLs and the subsequent effect on SL signalling remain unclear. Here we elucidate the functional dynamics of ASK1-D3/MAX2 in SL signalling by leveraging conformational switch mutants in vitro and in plants. We report the crystal structure of a dislodged CTH of the ASK1-D3 mutant and demonstrate that disruptions in CTH plasticity via either CRISPR-Cas9 genome editing or expression of point mutation mutants result in impairment of SL signalling. We show that the conformational switch in ASK1-D3/MAX2 CTH directly regulates ubiquitin-mediated protein degradation. A dislodged conformation involved in D53/SMXLs SL-dependent recruitment and ubiquitination and an engaged conformation are required for the release of polyubiquitinated D53/SMXLs and subsequently D14 for proteasomal degradation. Finally, we uncovered an organic acid metabolite that can directly trigger the D3/MAX2 CTH conformational switch. Our findings unravel a new regulatory function of a SKP1-CUL1-F-box ubiquitin ligase in plant signalling.
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Affiliation(s)
- Lior Tal
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA
| | - Malathy Palayam
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA
| | - Mily Ron
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA
| | - Aleczander Young
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA
| | - Anne Britt
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA
| | - Nitzan Shabek
- Department of Plant Biology, College of Biological Sciences, University of California - Davis, Davis, CA, USA.
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Li A, Hao C, Wang Z, Geng S, Jia M, Wang F, Han X, Kong X, Yin L, Tao S, Deng Z, Liao R, Sun G, Wang K, Ye X, Jiao C, Lu H, Zhou Y, Liu D, Fu X, Zhang X, Mao L. Wheat breeding history reveals synergistic selection of pleiotropic genomic sites for plant architecture and grain yield. MOLECULAR PLANT 2022; 15:504-519. [PMID: 35026438 DOI: 10.1016/j.molp.2022.01.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/24/2021] [Accepted: 01/07/2022] [Indexed: 05/10/2023]
Abstract
Diversity surveys of crop germplasm are important for gaining insights into the genomic basis for plant architecture and grain yield improvement, which is still poorly understood in wheat. In this study, we exome sequenced 287 wheat accessions that were collected in the past 100 years. Population genetics analysis identified that 6.7% of the wheat genome falls within the selective sweeps between landraces and cultivars, which harbors the genes known for yield improvement. These regions were asymmetrically distributed on the A and B subgenomes with regulatory genes being favorably selected. Genome-wide association study (GWAS) identified genomic loci associated with traits for yield potential, and two underlying genes, TaARF12 encoding an auxin response factor and TaDEP1 encoding the G-protein γ-subunit, were located and characterized to pleiotropically regulate both plant height and grain weight. Elite single-nucleotide haplotypes with increased allele frequency in cultivars relative to the landraces were identified and found to have accumulated over the course of breeding. Interestingly, we found that TaARF12 and TaDEP1 function in epistasis with the classical plant height Rht-1 locus, leading to propose a "Green Revolution"-based working model for historical wheat breeding. Collectively, our study identifies selection signatures that fine-tune the gibberellin pathway during modern wheat breeding and provides a wealth of genomic diversity resources for the wheat research community.
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Affiliation(s)
- Aili Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Chenyang Hao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhenyu Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shuaifeng Geng
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Meiling Jia
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Fang Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiang Han
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xingchen Kong
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lingjie Yin
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shu Tao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhongyin Deng
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ruyi Liao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guoliang Sun
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ke Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xingguo Ye
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chengzhi Jiao
- Novogene Bioinformatics Institute, Beijing 100083, China
| | - Hongfeng Lu
- Novogene Bioinformatics Institute, Beijing 100083, China
| | - Yun Zhou
- Collaborative Innovation Center of Crop Stress Biology & Institute of Plant Stress Biology, School of Life Science, Henan University, Kaifeng 475004, China
| | - Dengcai Liu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Xiangdong Fu
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Xueyong Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Long Mao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Zhao DD, Park JR, Jang YH, Kim EG, Du XX, Farooq M, Yun BJ, Kim KM. Identification of One Major QTL and a Novel Gene OsIAA17q5 Associated with Tiller Number in Rice Using QTL Analysis. PLANTS (BASEL, SWITZERLAND) 2022; 11:538. [PMID: 35214873 PMCID: PMC8875189 DOI: 10.3390/plants11040538] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Rice tillers are one of the most important traits for the yield and development of rice, although little is known about its mode of inheritance. Tiller numbers were recorded every 7 days a total of nine times, starting 30 days after transplantation. Quantitative trait locus (QTL) based analysis on a set of double haploid population derivatives of a cross between the Cheongcheong and Nagdong varieties identified a major effect of locus RM18130-RM3381 on chromosome 5, which was expressed in eight different growth stages. Within the target region RM18130-RM3381 (physical distance: 2.08 Mb), 61 candidate genes were screened by annotation. Among the candidate genes, Os05g0230700 (named OsIAA17q5), which belongs to the family of auxin-responsive genes, was selected as a target. Auxin promotes cell division and meristem maintenance and is an effective plant regulator which influences plant growth and development by altering the expression of various genes. OsIAA17q5 is expected to control the number of tillers. The present study provides further understanding of the basic genetic mechanisms that selectively express the control of tiller numbers in different growth stages, as well as provides valuable information for future research aimed at cloning the target gene. These results may contribute to developing a comprehensive understanding of the basic genetic processes regulating the developmental behavior of tiller numbers in rice.
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Affiliation(s)
- Dan-Dan Zhao
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
| | - Jae-Ryoung Park
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
- Crop Breeding Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea
| | - Yoon-Hee Jang
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
| | - Eun-Gyeong Kim
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
| | - Xiao-Xuan Du
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Korea;
- Biosafety Division, National Institute of Agricultural Science, Jeonju 54874, Korea
| | - Muhammad Farooq
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
| | - Byoung-Ju Yun
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea
| | - Kyung-Min Kim
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu 41566, Korea; (D.-D.Z.); (J.-R.P.); (Y.-H.J.); (E.-G.K.); (M.F.)
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Korea;
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Wang Z, Wu F, Chen X, Zhou W, Shi H, Lin Y, Hou S, Yu S, Zhou H, Li C, Liu Y. Fine mapping of the tiller inhibition gene TIN4 contributing to ideal plant architecture in common wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:527-535. [PMID: 34716761 DOI: 10.1007/s00122-021-03981-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/19/2021] [Indexed: 05/26/2023]
Abstract
A tiller inhibition gene, TIN4, was mapped to an approximately 311 kb genomic interval on chromosome arm 2DL of wheat. The tiller is one of the key components of plant morphological architecture and a central agronomic trait affecting spike number in wheat. Low tiller number has been proposed as a major component of crop ideotypes for high yield potential. In this study, we characterized the development of tillering in near-isogenic lines (NIL7A and NIL7B), indicating that the TIN4 gene inhibited the growth of tillering buds and negatively regulated tiller number. Low-tillering was controlled by a single gene (TIN4) located on chromosome 2DL by genetic analysis and bulked segregant RNA-seq analysis. A total of 17 new polymorphic markers were developed in this study, and 61 recombinants were identified in the secondary F2 population containing 4,266 individuals. TIN4 was finally mapped on a 0.35 cM interval, co-segregated with molecular marker M380, within a 311 kb genomic interval of the wheat cultivar Chinese Spring reference genome sequence that contained twelve predicted genes. Yield experiments showed that the yield of low-tillering lines was higher than that of high-tillering lines at a higher density. Overall, this study provides a foundation for the construction of a low-tillering ideotype for improving wheat yield and further cloning TIN4 by map-based cloning approach.
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Affiliation(s)
- Zhiqiang Wang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Fangkun Wu
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Xudong Chen
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Wanlin Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Haoran Shi
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Yu Lin
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Shuai Hou
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Shifan Yu
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Hong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Caixia Li
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China
| | - Yaxi Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Wenjiang, Chengdu, 611130, China.
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China.
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Li G, Xu B, Zhang Y, Xu Y, Khan NU, Xie J, Sun X, Guo H, Wu Z, Wang X, Zhang H, Li J, Xu J, Wang W, Zhang Z, Li Z. RGN1 controls grain number and shapes panicle architecture in rice. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:158-167. [PMID: 34498389 PMCID: PMC8710824 DOI: 10.1111/pbi.13702] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 05/29/2023]
Abstract
Yield in rice is determined mainly by panicle architecture. Using map-based cloning, we identified an R2R3 MYB transcription factor REGULATOR OF GRAIN NUMBER1 (RGN1) affecting grain number and panicle architecture. Mutation of RGN1 caused an absence of lateral grains on secondary branches. We demonstrated that RGN1 controls lateral grain formation by regulation of LONELY GUY (LOG) expression, thus controlling grain number and shaping panicle architecture. A novel favourable allele, RGN1C , derived from the Or-I group in wild rice affected panicle architecture by means longer panicles. Identification of RGN1 provides a theoretical basis for understanding the molecular mechanism of lateral grain formation in rice; RGN1 will be an important gene resource for molecular breeding for higher yield.
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Affiliation(s)
- Gangling Li
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Bingxia Xu
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Yanpei Zhang
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Yawen Xu
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Najeeb Ullah Khan
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Jianyin Xie
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Xingming Sun
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Haifeng Guo
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Zhenyuan Wu
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Xueqiang Wang
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Hongliang Zhang
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Jinjie Li
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Jianlong Xu
- Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Wensheng Wang
- Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijingChina
| | - Zhanying Zhang
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
| | - Zichao Li
- State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic ImprovementCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijingChina
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Kulkarni SR, Balachandran SM, Ulaganathan K, Balakrishnan D, Prasad ASH, Rekha G, Kousik MBVN, Hajira SK, Kale RR, Aleena D, Anila M, Punniakoti E, Dilip T, Pranathi K, Das MA, Shaik M, Chaitra K, Sinha P, Sundaram RM. Mapping novel QTLs for yield related traits from a popular rice hybrid KRH-2 derived doubled haploid (DH) population. 3 Biotech 2021; 11:513. [PMID: 34926111 DOI: 10.1007/s13205-021-03045-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 10/29/2021] [Indexed: 11/30/2022] Open
Abstract
A doubled haploid (DH) population consisting of 125 DHLs derived from the popular rice hybrid, KRH-2 (IR58025A/KMR3R) was utilized for Quantitative Trait Loci (QTL) mapping to identify novel genomic regions associated with yield related traits. A genetic map was constructed with 126 polymorphic SSR and EST derived markers, which were distributed across rice genome. QTL analysis using inclusive composite interval mapping (ICIM) method identified a total of 24 major and minor effect QTLs. Among them, twelve major effect QTLs were identified for days to fifty percent flowering (qDFF12-1), total grain yield/plant (qYLD3-1 and qYLD6-1), test (1,000) grain weight (qTGW6-1 and qTGW7-1), panicle weight (qPW9-1), plant height (qPH12-1), flag leaf length (qFLL6-1), flag leaf width (qFLW4-1), panicle length (qPL3-1 and qPL6-1) and biomass (qBM4-1), explaining 29.95-56.75% of the phenotypic variability with LOD scores range of 2.72-16.51. Chromosomal regions with gene clusters were identified on chromosome 3 for total grain yield/plant (qYLD3-1) and panicle length (qPL3-1) and on chromosome 6 for total grain yield/plant (qYLD6-1), flag leaf length (qFLL6-1) and panicle length (qPL6-1). Majority of the QTLs identified were observed to be co-localized with the previously reported QTL regions. Five novel, major effect QTLs associated with panicle weight (qPW9-1), plant height (qPH12-1), flag leaf width (qFLW4-1), panicle length (qPL3-1) and biomass (qBM4-1) and three novel minor effect QTLs for panicle weight (qPW3-1 and qPW8-1) and fertile grains per panicle (qFGP5-1) were identified. These QTLs can be used in breeding programs aimed to yield improvement after their validation in alternative populations. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-03045-7.
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Affiliation(s)
- Swapnil Ravindra Kulkarni
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - S M Balachandran
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - K Ulaganathan
- Centre for Plant Molecular Biology (CPMB), Osmania University, Hyderabad, 500007 India
| | - Divya Balakrishnan
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - A S Hari Prasad
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - G Rekha
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - M B V N Kousik
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - S K Hajira
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - Ravindra Ramarao Kale
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - D Aleena
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - M Anila
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - E Punniakoti
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - T Dilip
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - K Pranathi
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - M Ayyappa Das
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - Mastanbee Shaik
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - K Chaitra
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - Pragya Sinha
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
| | - R M Sundaram
- Biotechnology Department, ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana State (TS) 500030 India
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Strigolactones Modulate Cellular Antioxidant Defense Mechanisms to Mitigate Arsenate Toxicity in Rice Shoots. Antioxidants (Basel) 2021; 10:antiox10111815. [PMID: 34829686 PMCID: PMC8614715 DOI: 10.3390/antiox10111815] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 01/18/2023] Open
Abstract
Metalloid contamination, such as arsenic poisoning, poses a significant environmental problem, reducing plant productivity and putting human health at risk. Phytohormones are known to regulate arsenic stress; however, the function of strigolactones (SLs) in arsenic stress tolerance in rice is rarely investigated. Here, we investigated shoot responses of wild-type (WT) and SL-deficient d10 and d17 rice mutants under arsenate stress to elucidate SLs’ roles in rice adaptation to arsenic. Under arsenate stress, the d10 and d17 mutants displayed severe growth abnormalities, including phenotypic aberrations, chlorosis and biomass loss, relative to WT. Arsenate stress activated the SL-biosynthetic pathway by enhancing the expression of SL-biosynthetic genes D10 and D17 in WT shoots. No differences in arsenic levels between WT and SL-biosynthetic mutants were found from Inductively Coupled Plasma-Mass Spectrometry analysis, demonstrating that the greater growth defects of mutant plants did not result from accumulated arsenic in shoots. The d10 and d17 plants had higher levels of reactive oxygen species, water loss, electrolyte leakage and membrane damage but lower activities of superoxide dismutase, ascorbate peroxidase, glutathione peroxidase and glutathione S-transferase than did the WT, implying that arsenate caused substantial oxidative stress in the SL mutants. Furthermore, WT plants had higher glutathione (GSH) contents and transcript levels of OsGSH1, OsGSH2, OsPCS1 and OsABCC1 in their shoots, indicating an upregulation of GSH-assisted arsenic sequestration into vacuoles. We conclude that arsenate stress activated SL biosynthesis, which led to enhanced arsenate tolerance through the stimulation of cellular antioxidant defense systems and vacuolar sequestration of arsenic, suggesting a novel role for SLs in rice adaptation to arsenic stress. Our findings have significant implications in the development of arsenic-resistant rice varieties for safe and sustainable rice production in arsenic-polluted soils.
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Luo Z, Janssen BJ, Snowden KC. The molecular and genetic regulation of shoot branching. PLANT PHYSIOLOGY 2021; 187:1033-1044. [PMID: 33616657 PMCID: PMC8566252 DOI: 10.1093/plphys/kiab071] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/22/2021] [Indexed: 05/27/2023]
Abstract
The architecture of flowering plants exhibits both phenotypic diversity and plasticity, determined, in part, by the number and activity of axillary meristems and, in part, by the growth characteristics of the branches that develop from the axillary buds. The plasticity of shoot branching results from a combination of various intrinsic and genetic elements, such as number and position of nodes and type of growth phase, as well as environmental signals such as nutrient availability, light characteristics, and temperature (Napoli et al., 1998; Bennett and Leyser, 2006; Janssen et al., 2014; Teichmann and Muhr, 2015; Ueda and Yanagisawa, 2019). Axillary meristem initiation and axillary bud outgrowth are controlled by a complex and interconnected regulatory network. Although many of the genes and hormones that modulate branching patterns have been discovered and characterized through genetic and biochemical studies, there are still many gaps in our understanding of the control mechanisms at play. In this review, we will summarize our current knowledge of the control of axillary meristem initiation and outgrowth into a branch.
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Affiliation(s)
- Zhiwei Luo
- The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
- School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand
| | - Bart J Janssen
- The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
| | - Kimberley C Snowden
- The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
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Rehman NU, Li X, Zeng P, Guo S, Jan S, Liu Y, Huang Y, Xie Q. Harmony but Not Uniformity: Role of Strigolactone in Plants. Biomolecules 2021; 11:1616. [PMID: 34827614 PMCID: PMC8615677 DOI: 10.3390/biom11111616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/23/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Strigolactones (SLs) represent an important new plant hormone class marked by their multifunctional roles in plants and rhizosphere interactions, which stimulate hyphal branching in arbuscular mycorrhizal fungi (AMF) and seed germination of root parasitic plants. SLs have been broadly implicated in regulating root growth, shoot architecture, leaf senescence, nodulation, and legume-symbionts interaction, as well as a response to various external stimuli, such as abiotic and biotic stresses. These functional properties of SLs enable the genetic engineering of crop plants to improve crop yield and productivity. In this review, the conservation and divergence of SL pathways and its biological processes in multiple plant species have been extensively discussed with a particular emphasis on its interactions with other different phytohormones. These interactions may shed further light on the regulatory networks underlying plant growth, development, and stress responses, ultimately providing certain strategies for promoting crop yield and productivity with the challenges of global climate and environmental changes.
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Affiliation(s)
- Naveed Ur Rehman
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Peichun Zeng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaoying Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Saad Jan
- Agriculture Department, Entomology Section Bacha Khan University, Charsadda 24420, Pakistan;
| | - Yunfeng Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences and Technology, Guangxi University, Nanning 530004, China;
| | - Yifeng Huang
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Science, Hangzhou 310001, China
| | - Qingjun Xie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
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Andrew-Peter-Leon MT, Selvaraj R, Kumar KK, Muthamilarasan M, Yasin JK, Pillai MA. Loss of Function of OsFBX267 and OsGA20ox2 in Rice Promotes Early Maturing and Semi-Dwarfism in γ-Irradiated IWP and Genome-Edited Pusa Basmati-1. FRONTIERS IN PLANT SCIENCE 2021; 12:714066. [PMID: 34630462 PMCID: PMC8494130 DOI: 10.3389/fpls.2021.714066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/19/2021] [Indexed: 05/25/2023]
Abstract
Targeted mutagenesis is now becoming the most favored methodology to improve traits in popular rice cultivars selectively. Understanding the genetic basis of already available mutants could be the first step in designing such experiment. Improved White Ponni (IWP), a popularly grown South Indian rice variety, was subjected to γ irradiation to develop WP-22-2, an M6 line superior in semi-dwarfism, early flowering, and high yield, and it has grain qualities similar to those of IWP. The exogenous application of gibberellic acid (GA3) on WP-22-2 resulted in the elongation of shorter internodes to a level similar to IWP. The expression profiling of six genes regulating plant height showed their differential expression pattern at different time points post GA3 treatment. Furthermore, the sequencing of WP-22-2 and IWP genomes revealed several single nucleotide polymorphisms (SNPs) and large-scale deletions in WP-22-2. The conversion of functional codons to stop codons was observed in OsGA20ox2 and OsFBX267, which have been reported to have roles in regulating semi-dwarfism and early flowering, respectively. The loss of function of OsGA20ox2 and OsFBX267 in WP-22-2 resulted in reduced plant height as well as early flowering, and the same has been confirmed by editing OsGA20ox2 in the rice variety Pusa Basmati1 (PB1) using the CRISPR-Cas9 approach. The targeted editing of OsGA20ox2 in PB1 conferred shorter plant height to the edited lines compared with the wild type. Altogether, the study provides evidence on mutating OsGA20ox2 and OsFBX267 genes to develop early maturing and semi-dwarf varieties that can be released to farmers after functional characterization and field trials.
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Affiliation(s)
- M. T. Andrew-Peter-Leon
- Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Tuticorin, India
| | - Ramchander Selvaraj
- Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Tuticorin, India
| | - K. K. Kumar
- Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
| | | | - Jeshima Khan Yasin
- Division of Genomic Resources, ICAR-Indian Council of Agricultural Research, National Bureau of Plant Genetic Resources, New Delhi, India
| | - M. Arumugam Pillai
- Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Tuticorin, India
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Yu Y, Yu J, Wang Q, Wang J, Zhao G, Wu H, Zhu Y, Chu C, Fang J. Overexpression of the rice ORANGE gene OsOR negatively regulates carotenoid accumulation, leads to higher tiller numbers and decreases stress tolerance in Nipponbare rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 310:110962. [PMID: 34315587 DOI: 10.1016/j.plantsci.2021.110962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/22/2021] [Accepted: 06/01/2021] [Indexed: 06/13/2023]
Abstract
The ORANGE (OR) gene has been reported to regulate chromoplast differentiation and enhance carotenoid biosynthesis in many dicotyledonous plants. However, the function of the OR gene in monocotyledons, especially rice, is poorly known. Here, the OR gene from rice, OsOR, was isolated and characterized by generating overexpressing and genome editing mutant lines. The OsOR-overexpressing plants exhibited pleiotropic phenotypes, such as alternating transverse green and white sectors on leaves at the early tillering stage, that were due to changes in thylakoid development and reduced carotenoid content. In addition, the number of tillers significantly increased in OsOR-overexpressing plants but decreased in osor mutant lines, a result similar to that previously reported for the carotenoid isomerase mutant mit3. The expression of the DWARF3 and DWARF53 genes that are involved in the strigolactone signalling pathway were similarly downregulated in OsOR-overexpressing plants but upregulated in osor mutants. Moreover, the OsOR-overexpressing plants exhibited greater sensitivity to salt and cold stress, and had lower total chlorophyll and higher MDA contents. All results suggest that the OsOR gene plays an important role not only in carotenoid accumulation but also in tiller number regulation and in responses to environmental stress in rice.
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Affiliation(s)
- Yang Yu
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin, China; College of Life Science and Engineering, Shenyang University, Shenyang, China
| | - Jiyang Yu
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin, China; Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, China
| | - Qinglong Wang
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Jing Wang
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin, China; Quality and Safety Institute of Agriculture Products, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Guangxin Zhao
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin, China; College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing, China
| | - Hongkai Wu
- College of Agriculture and Food Science, Zhejiang A&F University, Hangzhou, China
| | - Yanming Zhu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, China
| | - Chengcai Chu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China; College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing, China.
| | - Jun Fang
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Harbin, China; College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing, China.
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Mizuno Y, Komatsu A, Shimazaki S, Naramoto S, Inoue K, Xie X, Ishizaki K, Kohchi T, Kyozuka J. Major components of the KARRIKIN INSENSITIVE2-dependent signaling pathway are conserved in the liverwort Marchantia polymorpha. THE PLANT CELL 2021; 33:2395-2411. [PMID: 33839776 PMCID: PMC8364241 DOI: 10.1093/plcell/koab106] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/06/2021] [Indexed: 05/04/2023]
Abstract
KARRIKIN INSENSITIVE2 (KAI2) was first identified as a receptor of karrikins, smoke-derived germination stimulants. KAI2 is also considered a receptor of an unidentified endogenous molecule called the KAI2 ligand. Upon KAI2 activation, signals are transmitted through the degradation of D53/SMXL proteins via MAX2-dependent ubiquitination. Although components in the KAI2-dependent signaling pathway, namely MpKAI2A and MpKAI2B, MpMAX2, and MpSMXL, exist in the genome of the liverwort Marchantia polymorpha, their functions remain unknown. Here, we show that early thallus growth is retarded and gemma dormancy in the dark is suppressed in Mpkai2a and Mpmax2 loss-of-function mutants. These defects are counteracted in Mpkai2a Mpsmxl and Mpmax2 Mpsmxl double mutants indicating that MpKAI2A, MpMAX2, and MpSMXL act in the same genetic pathway. Introduction of MpSMXLd53, in which a domain required for degradation is mutated, into wild-type plants mimicks Mpkai2a and Mpmax2 plants. In addition, the detection of citrine fluorescence in Nicotiana benthamiana cells transiently expressing a SMXL-Citrine fusion protein requires treatment with MG132, a proteasome inhibitor. These findings imply that MpSMXL is subjected to degradation, and that the degradation of MpSMXL is crucial for MpKAI2A-dependent signaling in M. polymorpha. Therefore, we claim that the basic mechanisms in the KAI2-dependent signaling pathway are conserved in M. polymorpha.
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Affiliation(s)
- Yohei Mizuno
- Graduate School of Life Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Aino Komatsu
- Graduate School of Life Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Shota Shimazaki
- Graduate School of Life Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Satoshi Naramoto
- Graduate School of Life Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Keisuke Inoue
- Graduate School of Biostudies, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Kimitsune Ishizaki
- Graduate School of Science, Kobe University, Nada-ku, Kobe 657-8501, Japan
| | - Takayuki Kohchi
- Graduate School of Biostudies, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Junko Kyozuka
- Graduate School of Life Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
- Author for correspondence:
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Mostofa MG, Rahman MM, Nguyen KH, Li W, Watanabe Y, Tran CD, Zhang M, Itouga M, Fujita M, Tran LSP. Strigolactones regulate arsenate uptake, vacuolar-sequestration and antioxidant defense responses to resist arsenic toxicity in rice roots. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125589. [PMID: 34088170 DOI: 10.1016/j.jhazmat.2021.125589] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 12/26/2020] [Accepted: 03/01/2021] [Indexed: 05/23/2023]
Abstract
We explored genetic evidence for strigolactones' role in rice tolerance to arsenate-stress. Comparative analyses of roots of wild-type (WT) and strigolactone-deficient mutants d10 and d17 in response to sodium arsenate (Na2AsO4) revealed differential growth inhibition [WT (11.28%) vs. d10 (19.76%) and d17 (18.03%)], biomass reduction [(WT (33.65%) vs. d10 (74.86%) and d17 (60.65%)] and membrane damage (WT < d10 and d17) at 250 μM Na2AsO4. Microscopic and biochemical analyses showed that roots of WT accumulated lower levels of arsenic and oxidative stress indicators like reactive oxygen species and malondialdehyde than those of strigolactone-deficient mutants. qRT-PCR data indicated lower expression levels of genes (OsPT1, OsPT2, OsPT4 and OsPT8) encoding phosphate-transporters in WT roots than mutant roots, explaining the decreased arsenate and phosphate uptake by WT roots. Increased levels of glutathione and OsPCS1 and OsABCC1 transcripts indicated an efficient vacuolar-sequestration of arsenic in WT roots. Furthermore, higher activities (transcript levels) of SOD (OsCuZnSOD1 and OsCuZnSOD2), APX (OsAPX1 and OsAPX2) and CAT (OsCATA) corresponded to lower oxidative damage in WT roots compared with strigolactone-mutant roots. Collectively, these results highlight that strigolactones are involved in arsenic-stress mitigation by regulating arsenate-uptake, glutathione-biosynthesis, vacuolar-sequestration of arsenic and antioxidant defense responses in rice roots.
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Affiliation(s)
- Mohammad Golam Mostofa
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
| | - Md Mezanur Rahman
- Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
| | - Kien Huu Nguyen
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Vietnam Academy of Agricultural Sciences, Pham Van Dong St., Ha noi 100000, Vietnam.
| | - Weiqiang Li
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Jinming Road, Kaifeng 475004, China; Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
| | - Yasuko Watanabe
- Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
| | - Cuong Duy Tran
- Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
| | - Minghui Zhang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Jinming Road, Kaifeng 475004, China.
| | - Misao Itouga
- Synthetic Genomics Research Group, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi, Kanagawa 230-0045, Japan; Japan Moss Factory Co., Ltd., WRIP408, 2-3-13, Minami, Wako, Saitama 351-0104, Japan.
| | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan.
| | - Lam-Son Phan Tran
- Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan; Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam; Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock 79409, TX, USA.
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Barbier FF, Cao D, Fichtner F, Weiste C, Perez-Garcia MD, Caradeuc M, Le Gourrierec J, Sakr S, Beveridge CA. HEXOKINASE1 signalling promotes shoot branching and interacts with cytokinin and strigolactone pathways. THE NEW PHYTOLOGIST 2021; 231:1088-1104. [PMID: 33909299 DOI: 10.1111/nph.17427] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/18/2021] [Indexed: 05/08/2023]
Abstract
Plant architecture is controlled by several endogenous signals including hormones and sugars. However, only little information is known about the nature and roles of the sugar signalling pathways in this process. Here we test whether the sugar signalling pathway mediated by HEXOKINASE1 (HXK1) is involved in the control of shoot branching. To test the involvement of HXK1 in shoot branching and in the hormonal network controlling this process, we modulated the HXK1 pathway using physiological and genetic approaches in rose, pea and arabidopsis. Mannose-induced HXK signalling triggered bud outgrowth in rose and pea. In arabidopsis, both HXK1 deficiency and defoliation led to decreased shoot branching and conferred hypersensitivity to auxin. Complementation of the HXK1 knockout mutant gin2 with a catalytically inactive HXK1, restored shoot branching to the wild-type level. HXK1-deficient plants displayed decreased cytokinin levels and increased expression of MAX2, which is required for strigolactone signalling. The branching phenotype of HXK1-deficient plants could be partly restored by cytokinin treatment and strigolactone deficiency could override the negative impact of HXK1 deficiency on shoot branching. Our observations demonstrate that HXK1 signalling contributes to the regulation of shoot branching and interacts with hormones to modulate plant architecture.
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Affiliation(s)
- Francois F Barbier
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Da Cao
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Franziska Fichtner
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Christoph Weiste
- Department of Pharmaceutical Biology, Julius-von-Sachs-Institute, Biocenter, Julius-Maximilians-Universität Würzburg, Würzburg, 97082, Germany
| | | | - Mathieu Caradeuc
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - José Le Gourrierec
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - Soulaiman Sakr
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - Christine A Beveridge
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
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Zhou X, Shafique K, Sajid M, Ali Q, Khalili E, Javed MA, Haider MS, Zhou G, Zhu G. Era-like GTP protein gene expression in rice. BRAZ J BIOL 2021; 82:e250700. [PMID: 34259718 DOI: 10.1590/1519-6984.250700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/19/2021] [Indexed: 11/22/2022] Open
Abstract
The mutations are genetic changes in the genome sequences and have a significant role in biotechnology, genetics, and molecular biology even to find out the genome sequences of a cell DNA along with the viral RNA sequencing. The mutations are the alterations in DNA that may be natural or spontaneous and induced due to biochemical reactions or radiations which damage cell DNA. There is another cause of mutations which is known as transposons or jumping genes which can change their position in the genome during meiosis or DNA replication. The transposable elements can induce by self in the genome due to cellular and molecular mechanisms including hypermutation which caused the localization of transposable elements to move within the genome. The use of induced mutations for studying the mutagenesis in crop plants is very common as well as a promising method for screening crop plants with new and enhanced traits for the improvement of yield and production. The utilization of insertional mutations through transposons or jumping genes usually generates stable mutant alleles which are mostly tagged for the presence or absence of jumping genes or transposable elements. The transposable elements may be used for the identification of mutated genes in crop plants and even for the stable insertion of transposable elements in mutated crop plants. The guanine nucleotide-binding (GTP) proteins have an important role in inducing tolerance in rice plants to combat abiotic stress conditions.
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Affiliation(s)
- X Zhou
- Linyi University, College of Life Science, Linyi, Shandong, China
| | - K Shafique
- Government Sadiq College Women University, Department of Botany, Bahawalpur, Pakistan
| | - M Sajid
- University of Okara, Faculty of Life Sciences, Department of Biotechnology, Okara, Pakistan
| | - Q Ali
- University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - E Khalili
- Tarbiat Modarres University, Faculty of Science, Department of Plant Science, Tehran, Iran
| | - M A Javed
- University of the Punjab Lahore, Department of Plant Breeding and Genetics, Lahore, Pakistan
| | - M S Haider
- University of the Punjab Lahore, Department of Plant Pathology, Lahore, Pakistan
| | - G Zhou
- Yangzhou University, The Ministry of Education of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, Jiangsu, China
| | - G Zhu
- Yangzhou University, The Ministry of Education of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, Jiangsu, China
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Bolortuya B, Kawabata S, Yamagami A, Davaapurev BO, Takahashi F, Inoue K, Kanatani A, Mochida K, Kumazawa M, Ifuku K, Jigjidsuren S, Battogtokh T, Udval G, Shinozaki K, Asami T, Batkhuu J, Nakano T. Transcriptome Analysis of Chloris virgata, Which Shows the Fastest Germination and Growth in the Major Mongolian Grassland Plant. FRONTIERS IN PLANT SCIENCE 2021; 12:684987. [PMID: 34262584 PMCID: PMC8275185 DOI: 10.3389/fpls.2021.684987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 04/26/2021] [Indexed: 06/13/2023]
Abstract
Plants in Mongolian grasslands are exposed to short, dry summers and long, cold winters. These plants should be prepared for fast germination and growth activity in response to the limited summer rainfall. The wild plant species adapted to the Mongolian grassland environment may allow us to explore useful genes, as a source of unique genetic codes for crop improvement. Here, we identified the Chloris virgata Dornogovi accession as the fastest germinating plant in major Mongolian grassland plants. It germinated just 5 h after treatment for germination initiation and showed rapid growth, especially in its early and young development stages. This indicates its high growth potential compared to grass crops such as rice and wheat. By assessing growth recovery after animal bite treatment (mimicked by cutting the leaves with scissors), we found that C. virgata could rapidly regenerate leaves after being damaged, suggesting high regeneration potential against grazing. To analyze the regulatory mechanism involved in the high growth potential of C. virgata, we performed RNA-seq-based transcriptome analysis and illustrated a comprehensive gene expression map of the species. Through de novo transcriptome assembly with the RNA-seq reads from whole organ samples of C. virgata at the germination stage (2 days after germination, DAG), early young development stage (8 DAG), young development stage (17 DAG), and adult development stage (28 DAG), we identified 21,589 unified transcripts (contigs) and found that 19,346 and 18,156 protein-coding transcripts were homologous to those in rice and Arabidopsis, respectively. The best-aligned sequences were annotated with gene ontology groups. When comparing the transcriptomes across developmental stages, we found an over-representation of genes involved in growth regulation in the early development stage in C. virgata. Plant development is tightly regulated by phytohormones such as brassinosteroids, gibberellic acid, abscisic acid, and strigolactones. Moreover, our transcriptome map demonstrated the expression profiles of orthologs involved in the biosynthesis of these phytohormones and their signaling networks. We discuss the possibility that C. virgata phytohormone signaling and biosynthesis genes regulate early germination and growth advantages. Comprehensive transcriptome information will provide a useful resource for gene discovery and facilitate a deeper understanding of the diversity of the regulatory systems that have evolved in C. virgata while adapting to severe environmental conditions.
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Affiliation(s)
- Byambajav Bolortuya
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
| | | | - Ayumi Yamagami
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Bekh-Ochir Davaapurev
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
| | - Fuminori Takahashi
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
| | - Komaki Inoue
- Bioproductivity Informatics Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Asaka Kanatani
- Bioproductivity Informatics Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Keiichi Mochida
- Bioproductivity Informatics Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Minoru Kumazawa
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Kentaro Ifuku
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Sodnomdarjaa Jigjidsuren
- Research Institute of Animal Husbandry, Mongolian University of Life Science, Ulaanbaatar, Mongolia
| | - Tugsjargal Battogtokh
- Research Institute of Animal Husbandry, Mongolian University of Life Science, Ulaanbaatar, Mongolia
| | - Gombosuren Udval
- Research Institute of Animal Husbandry, Mongolian University of Life Science, Ulaanbaatar, Mongolia
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
| | - Tadao Asami
- Department of Applied Biological Chemistry, The University of Tokyo, Tokyo, Japan
| | - Javzan Batkhuu
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
| | - Takeshi Nakano
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Japan
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46
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Mapping QTLs for yield component traits using overwintering cultivated rice. J Genet 2021. [DOI: 10.1007/s12041-021-01279-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Zhang S, Zhu L, Shen C, Ji Z, Zhang H, Zhang T, Li Y, Yu J, Yang N, He Y, Tian Y, Wu K, Wu J, Harberd NP, Zhao Y, Fu X, Wang S, Li S. Natural allelic variation in a modulator of auxin homeostasis improves grain yield and nitrogen use efficiency in rice. THE PLANT CELL 2021; 33:566-580. [PMID: 33955496 PMCID: PMC8136903 DOI: 10.1093/plcell/koaa037] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/08/2020] [Indexed: 05/03/2023]
Abstract
The external application of nitrogen (N) fertilizers is an important practice for increasing crop production. However, the excessive use of fertilizers significantly increases production costs and causes environmental problems, making the improvement of crop N-use efficiency (NUE) crucial for sustainable agriculture in the future. Here we show that the rice (Oryza sativa) NUE quantitative trait locus DULL NITROGEN RESPONSE1 (qDNR1), which is involved in auxin homeostasis, reflects the differences in nitrate (NO3-) uptake, N assimilation, and yield enhancement between indica and japonica rice varieties. Rice plants carrying the DNR1indica allele exhibit reduced N-responsive transcription and protein abundance of DNR1. This, in turn, promotes auxin biosynthesis, thereby inducing AUXIN RESPONSE FACTOR-mediated activation of NO3- transporter and N-metabolism genes, resulting in improved NUE and grain yield. We also show that a loss-of-function mutation at the DNR1 locus is associated with increased N uptake and assimilation, resulting in improved rice yield under moderate levels of N fertilizer input. Therefore, modulating the DNR1-mediated auxin response represents a promising strategy for achieving environmentally sustainable improvements in rice yield.
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Affiliation(s)
- Siyu Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Limei Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Chengbo Shen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhe Ji
- Department of Plant Sciences, University of Oxford, Oxford OX1 3RB, UK
| | - Haipeng Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Tao Zhang
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California 92093, USA
| | - Yu Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianping Yu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Ning Yang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yubing He
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanan Tian
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Kun Wu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Juyou Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | | | - Yunde Zhao
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California 92093, USA
| | - Xiangdong Fu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shaokui Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510640, China
- Author for correspondence: ,
| | - Shan Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- Author for correspondence: ,
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Jiang J, Yang G, Xin Y, Wang Z, Yan W, Chen Z, Tang X, Xia J. Overexpression of OsMed16 Inhibits the Growth of Rice and Causes Spontaneous Cell Death. Genes (Basel) 2021; 12:genes12050656. [PMID: 33925652 PMCID: PMC8145620 DOI: 10.3390/genes12050656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/23/2021] [Accepted: 04/25/2021] [Indexed: 11/16/2022] Open
Abstract
The Mediator complex transduces information from the DNA-bound transcription factors to the RNA polymerase II transcriptional machinery. Research on plant Mediator subunits has primarily been performed in Arabidopsis, while very few of them have been functionally characterized in rice. In this study, the rice Mediator subunit 16, OsMed16, was examined. OsMed16 encodes a putative protein of 1301 amino acids, which is longer than the version previously reported. It was expressed in various rice organs and localized to the nucleus. The knockout of OsMed16 resulted in rice seedling lethality. Its overexpression led to the retardation of rice growth, low yield, and spontaneous cell death in the leaf blade and sheath. RNA sequencing suggested that the overexpression of OsMed16 altered the expression of a large number of genes. Among them, the upregulation of some defense-related genes was verified. OsMed16 can regulate the expression of a wealth of genes, and alterations in its expression have a profound impact on plant growth, development, and defense responses in rice.
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Affiliation(s)
- Jie Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China; (J.J.); (G.Y.); (Y.X.); (Z.W.)
| | - Guangzhe Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China; (J.J.); (G.Y.); (Y.X.); (Z.W.)
| | - Yafeng Xin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China; (J.J.); (G.Y.); (Y.X.); (Z.W.)
| | - Zhigang Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China; (J.J.); (G.Y.); (Y.X.); (Z.W.)
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China;
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China;
| | - Zhufeng Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China;
- Shenzhen Agricultural Technology Promotion Center, Shenzhen 518055, China
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China;
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China;
- Correspondence: (X.T.); (J.X.)
| | - Jixing Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China; (J.J.); (G.Y.); (Y.X.); (Z.W.)
- Correspondence: (X.T.); (J.X.)
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49
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Wang Y, Yao R, Du X, Guo L, Chen L, Xie D, Smith SM. Molecular basis for high ligand sensitivity and selectivity of strigolactone receptors in Striga. PLANT PHYSIOLOGY 2021; 185:1411-1428. [PMID: 33793945 PMCID: PMC8133601 DOI: 10.1093/plphys/kiaa048] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 11/11/2020] [Indexed: 05/30/2023]
Abstract
Seeds of the root parasitic plant Striga hermonthica can sense very low concentrations of strigolactones (SLs) exuded from host roots. The S. hermonthica hyposensitive to light (ShHTL) proteins are putative SL receptors, among which ShHTL7 reportedly confers sensitivity to picomolar levels of SL when expressed in Arabidopsis thaliana. However, the molecular mechanism underlying ShHTL7 sensitivity is unknown. Here we determined the ShHTL7 crystal structure and quantified its interactions with various SLs and key interacting proteins. We established that ShHTL7 has an active-site pocket with broad-spectrum response to different SLs and moderate affinity. However, in contrast to other ShHTLs, we observed particularly high affinity of ShHTL7 for F-box protein AtMAX2. Furthermore, ShHTL7 interacted with AtMAX2 and with transcriptional regulator AtSMAX1 in response to nanomolar SL concentration. ShHTL7 mutagenesis analyses identified surface residues that contribute to its high-affinity binding to AtMAX2 and residues in the ligand binding pocket that confer broad-spectrum response to SLs with various structures. Crucially, yeast-three hybrid experiments showed that AtMAX2 confers responsiveness of the ShHTL7-AtSMAX1 interaction to picomolar levels of SL in line with the previously reported physiological sensitivity. These findings highlight the key role of SL-induced MAX2-ShHTL7-SMAX1 complex formation in determining the sensitivity to SL. Moreover, these data suggest a strategy to screen for compounds that could promote suicidal seed germination at physiologically relevant levels.
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Affiliation(s)
- Yupei Wang
- MOE Key Laboratory of Bioinformatics, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Ruifeng Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Xiaoxi Du
- MOE Key Laboratory of Bioinformatics, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Lvjun Guo
- MOE Key Laboratory of Bioinformatics, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Li Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, China
| | - Daoxin Xie
- MOE Key Laboratory of Bioinformatics, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Steven M Smith
- Australian Research Council Centre of Excellence for Plant Success in Nature and Agriculture, School of Natural Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
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50
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Bouwmeester H, Li C, Thiombiano B, Rahimi M, Dong L. Adaptation of the parasitic plant lifecycle: germination is controlled by essential host signaling molecules. PLANT PHYSIOLOGY 2021; 185:1292-1308. [PMID: 33793901 PMCID: PMC8133609 DOI: 10.1093/plphys/kiaa066] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/12/2020] [Indexed: 05/25/2023]
Abstract
Parasitic plants are plants that connect with a haustorium to the vasculature of another, host, plant from which they absorb water, assimilates, and nutrients. Because of this parasitic lifestyle, parasitic plants need to coordinate their lifecycle with that of their host. Parasitic plants have evolved a number of host detection/host response mechanisms of which the germination in response to chemical host signals in one of the major families of parasitic plants, the Orobanchaceae, is a striking example. In this update review, we discuss these germination stimulants. We review the different compound classes that function as germination stimulants, how they are produced, and in which host plants. We discuss why they are reliable signals, how parasitic plants have evolved mechanisms that detect and respond to them, and whether they play a role in host specificity. The advances in the knowledge underlying this signaling relationship between host and parasitic plant have greatly improved our understanding of the evolution of plant parasitism and are facilitating the development of more effective control measures in cases where these parasitic plants have developed into weeds.
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Affiliation(s)
- Harro Bouwmeester
- Plant Hormone Biology group, Green Life Sciences cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Changsheng Li
- Plant Hormone Biology group, Green Life Sciences cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Benjamin Thiombiano
- Plant Hormone Biology group, Green Life Sciences cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Mehran Rahimi
- Plant Hormone Biology group, Green Life Sciences cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Lemeng Dong
- Plant Hormone Biology group, Green Life Sciences cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
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