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Liang Y, Yang X, Wang C, Wang Y. miRNAs: Primary modulators of plant drought tolerance. JOURNAL OF PLANT PHYSIOLOGY 2024; 301:154313. [PMID: 38991233 DOI: 10.1016/j.jplph.2024.154313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 06/17/2024] [Accepted: 07/05/2024] [Indexed: 07/13/2024]
Abstract
Drought is a principal environmental factor that affects the growth and development of plants. Accordingly, plants have evolved adaptive mechanisms to cope with adverse environmental conditions. One of the mechanisms is gene regulation mediated by microRNAs (miRNAs). miRNAs are regarded as primary modulators of gene expression at the post-transcriptional level and have been shown to participate in drought stress response, including ABA response, auxin signaling, antioxidant defense, and osmotic regulation through downregulating the corresponding targets. miRNA-based genetic reconstructions have the potential to improve the tolerance of plants to drought. However, there are few precise classification and discussion of miRNAs in specific response behaviors to drought stress and their applications. This review summarized and discussed the specific response behaviors of miRNAs under drought stress and the role of miRNAs as regulators in the response of plants to drought and highlighted that the modification of miRNAs might effectively improve the tolerance of plants to drought.
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Affiliation(s)
- Yanting Liang
- State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Xiaoqian Yang
- State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Chun Wang
- State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Yanwei Wang
- State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China.
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Meng J, Li W, Qi F, Yang T, Li N, Wan J, Li X, Jiang Y, Wang C, Huang M, Zhang Y, Chen Y, Teotia S, Tang G, Zhang Z, Tang J. Knockdown of microRNA390 Enhances Maize Brace Root Growth. Int J Mol Sci 2024; 25:6791. [PMID: 38928499 PMCID: PMC11203754 DOI: 10.3390/ijms25126791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/13/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
Brace root architecture is a critical determinant of maize's stalk anchorage and nutrition uptake, influencing root lodging resistance, stress tolerance, and plant growth. To identify the key microRNAs (miRNAs) in control of maize brace root growth, we performed small RNA sequencing using brace root samples at emergence and growth stages. We focused on the genetic modulation of brace root development in maize through manipulation of miR390 and its downstream regulated auxin response factors (ARFs). In the present study, miR167, miR166, miR172, and miR390 were identified to be involved in maize brace root growth in inbred line B73. Utilizing short tandem target mimic (STTM) technology, we further developed maize lines with reduced miR390 expression and analyzed their root architecture compared to wild-type controls. Our findings show that STTM390 maize lines exhibit enhanced brace root length and increased whorl numbers. Gene expression analyses revealed that the suppression of miR390 leads to upregulation of its downstream regulated ARF genes, specifically ZmARF11 and ZmARF26, which may significantly alter root architecture. Additionally, loss-of-function mutants for ZmARF11 and ZmARF26 were characterized to further confirm the role of these genes in brace root growth. These results demonstrate that miR390, ZmARF11, and ZmARF26 play crucial roles in regulating maize brace root growth; the involved complicated molecular mechanisms need to be further explored. This study provides a genetic basis for breeding maize varieties with improved lodging resistance and adaptability to diverse agricultural environments.
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Affiliation(s)
- Juan Meng
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Weiya Li
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Feiyan Qi
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Tianxiao Yang
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611, USA;
| | - Na Li
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Jiong Wan
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Xiaoqi Li
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Yajuan Jiang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Chenhui Wang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Meilian Huang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Yuanyuan Zhang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Yongqiang Chen
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Sachin Teotia
- Department of Biotechnology, Sharda University, Greater Noida 201306, India;
| | - Guiliang Tang
- Department of Biological Sciences, Life Science and Technology Institute, Michigan Technological University, Houghton, MI 49931, USA;
| | - Zhanhui Zhang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
| | - Jihua Tang
- National Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; (J.M.); (W.L.); (F.Q.); (N.L.); (J.W.); (X.L.); (Y.J.); (C.W.); (M.H.); (Y.Z.); (Y.C.)
- The Shennong Laboratory, Zhengzhou 450002, China
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Xue JS, Feng YF, Zhang MQ, Xu QL, Xu YM, Shi JQ, Liu LF, Wu XF, Wang S, Yang ZN. The regulatory mechanism of rapid lignification for timely anther dehiscence. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 38888227 DOI: 10.1111/jipb.13715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 05/16/2024] [Indexed: 06/20/2024]
Abstract
Anther dehiscence is a crucial event in plant reproduction, tightly regulated and dependent on the lignification of the anther endothecium. In this study, we investigated the rapid lignification process that ensures timely anther dehiscence in Arabidopsis. Our findings reveal that endothecium lignification can be divided into two distinct phases. During Phase I, lignin precursors are synthesized without polymerization, while Phase II involves simultaneous synthesis of lignin precursors and polymerization. The transcription factors MYB26, NST1/2, and ARF17 specifically regulate the pathway responsible for the synthesis and polymerization of lignin monomers in Phase II. MYB26-NST1/2 is the key regulatory pathway responsible for endothecium lignification, while ARF17 facilitates this process by interacting with MYB26. Interestingly, our results demonstrate that the lignification of the endothecium, which occurs within approximately 26 h, is much faster than that of the vascular tissue. These findings provide valuable insights into the regulation mechanism of rapid lignification in the endothecium, which enables timely anther dehiscence and successful pollen release during plant reproduction.
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Affiliation(s)
- Jing-Shi Xue
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yi-Feng Feng
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Ming-Qi Zhang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Qin-Lin Xu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Ya-Min Xu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Jun-Qin Shi
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Li-Fang Liu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xiao-Feng Wu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Shui Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Zhong-Nan Yang
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
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Wiese AJ, Torutaeva E, Honys D. The transcription factors and pathways underpinning male reproductive development in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2024; 15:1354418. [PMID: 38390292 PMCID: PMC10882072 DOI: 10.3389/fpls.2024.1354418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/15/2024] [Indexed: 02/24/2024]
Abstract
As Arabidopsis flowers mature, specialized cells within the anthers undergo meiosis, leading to the production of haploid microspores that differentiate into mature pollen grains, each containing two sperm cells for double fertilization. During pollination, the pollen grains are dispersed from the anthers to the stigma for subsequent fertilization. Transcriptomic studies have identified a large number of genes expressed over the course of male reproductive development and subsequent functional characterization of some have revealed their involvement in floral meristem establishment, floral organ growth, sporogenesis, meiosis, microsporogenesis, and pollen maturation. These genes encode a plethora of proteins, ranging from transcriptional regulators to enzymes. This review will focus on the regulatory networks that control male reproductive development, starting from flower development and ending with anther dehiscence, with a focus on transcription factors and some of their notable target genes.
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Affiliation(s)
- Anna Johanna Wiese
- Laboratory of Pollen Biology, Institute for Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | - Elnura Torutaeva
- Laboratory of Pollen Biology, Institute for Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Prague, Czechia
| | - David Honys
- Laboratory of Pollen Biology, Institute for Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Prague, Czechia
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Guo S, Zheng C, Wang Y, Xu Y, Wu J, Wang L, Liu X, Chen Z. OsmiRNA5488 Regulates the Development of Embryo Sacs and Targets OsARF25 in Rice ( Oryza sativa L.). Int J Mol Sci 2023; 24:16240. [PMID: 38003430 PMCID: PMC10671434 DOI: 10.3390/ijms242216240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Small RNAs are a class of non-coding RNAs that typically range from 20 to 24 nucleotides in length. Among them, microRNAs (miRNAs) are particularly important regulators for plant development. The biological function of the conserved miRNAs has been studied extensively in plants, while that of the species-specific miRNAs has been studied in-depth. In this study, the regulatory role of a rice-specific OsmiRNA5488 (OsmiR5488) was characterized with the miR5488-overexpressed line (miR5488-OE) and miR5488-silenced line (STTM-5488). The seed-setting rate was notably reduced in miR5488-OE lines, but not in STTM-5488 lines. Cytological observation demonstrated the different types of abnormal mature embryo sacs, including the degeneration of embryo sacs and other variant types, in miR5488-OE lines. The percentage of the abnormal mature embryo sacs accounted for the reduced value of the seed-setting rate. Furthermore, OsARF25 was identified as a target of OsmiR5488 via RNA ligase-mediated 3'-amplifification of cDNA ends, dual luciferase assays, and transient expression assays. The primary root length was decreased with the increases in auxin concentrations in miR5488-OE lines compared to wild-type rice. Summarily, our results suggested that OsmiR5488 regulates the seed-setting rate and down-regulates the targeted gene OsARF25.
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Affiliation(s)
- Shengyuan Guo
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
| | - Chuanjiang Zheng
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
| | - Yan Wang
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
| | - Yangwen Xu
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
| | - Jinwen Wu
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Lan Wang
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Xiangdong Liu
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Zhixiong Chen
- Department of Plant Breeding, College of Agriculture, South China Agricultural University, Guangzhou 510642, China; (S.G.); (C.Z.); (Y.W.); (Y.X.); (J.W.); (L.W.)
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
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Arora S, Singh AK, Chaudhary B. Coordination of floral and fiber development in cotton (Gossypium) by hormone- and flavonoid-signalling associated regulatory miRNAs. PLANT MOLECULAR BIOLOGY 2023; 112:1-18. [PMID: 37067671 DOI: 10.1007/s11103-023-01341-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 02/16/2023] [Indexed: 05/09/2023]
Abstract
Various plant development activities and stress responses are tightly regulated by various microRNAs (miRNA) and their target genes, or transcription factors in a spatiotemporal manner. Here, to exemplify how flowering-associated regulatory miRNAs synchronize their expression dynamics during floral and fiber development in cotton, constitutive expression diminution transgenic lines of auxin-signaling regulatory Gh-miR167 (35S-MIM167) were developed through target mimicry approach. 'Moderate' (58% to 80%)- and 'high' (> 80%)-Gh-miR167 diminution mimic lines showed dosage-dependent developmental deformities in anther development, pollen maturation, and fruit (= boll) formation. Cross pollination of 'moderate' 35S-MIM167 mimic lines with wild type (WT) plant partially restored boll formation and emergence of fiber initials on the ovule surface. Gh-miR167 diminution favored organ-specific transcription biases in miR159, miR166 as well as miR160, miR164, and miR172 along with their target genes during anther and petal development, respectively. Similarly, accumulative effect of percent Gh-miR167 diminution, cross regulation of its target ARF6/8 genes, and temporal mis-expression of hormone signaling- and flavonoid biosynthesis-associated regulatory miRNAs at early fiber initiation stage caused irregular fiber formation. Spatial and temporal transcription proportions of regulatory miRNAs were also found crucial for the execution of hormone- and flavonoid-dependent progression of floral and fiber development. These observations discover how assorted regulatory genetic circuits get organized in response to Gh-miR167 diminution and converge upon ensuing episodes of floral and fiber development in cotton.
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Affiliation(s)
- Sakshi Arora
- School of Biotechnology, Gautam Buddha University, Greater Noida, 201312, India
| | - Amarjeet Kumar Singh
- Center for Genetic Manipulation of Crop Plants, University of Delhi South Campus, New Delhi, 110021, India
| | - Bhupendra Chaudhary
- School of Biotechnology, Gautam Buddha University, Greater Noida, 201312, India.
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Gómez-Martín C, Zhou H, Medina JM, Aparicio-Puerta E, Hackenberg M, Shi B. Comprehensive, integrative genomic analysis of microRNA expression profiles in different tissues of two wheat cultivars with different traits. Funct Integr Genomics 2022; 23:15. [PMID: 36562829 DOI: 10.1007/s10142-022-00920-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/04/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022]
Abstract
Wheat is one of the most important food sources on Earth. MicroRNAs (miRNA) play important roles in wheat productivity. To identify wheat miRNAs, we constructed and sequenced sRNA libraries from leaves and roots of two wheat cultivars (RAC875 and Kukri) with many different traits. Given that available miRNA wheat complement in the plant-specific database PmiREN ( https://pmiren.com ) does not include root tissues and root-associated miRNAs might thus be missing, we performed first the prediction of novel miRNAs using the sRNAbench tool. We found a total of 150 putatively novel miRNA genes with expression of both arms from 289 unique mature sequences and nearly 30% of all miRNA reads in roots corresponded to novel miRNAs. In contrast, this figure in leaves dropped to under 3%, confirming the undersampling of roots in the complement of known miRNAs. By using 120 publicly available wheat datasets, 598 Zea mays small RNA libraries, 64 plant species genomes, wheat degradome library, and functional enrichment analysis, a subset of novel miRNAs were confirmed as bona-fide miRNAs. Of the total 605 miRNAs identified in this study inclusive of 316 known miRNAs, 528 miRNAs were shared by both cultivars, 429 miRNAs were shared by both root tissues and 329 miRNAs were shared by both leaf tissues. In addition, 32 miRNAs were specific to Kukri while 45 miRNAs were specific to RAC875. These miRNAs had diverse functions, such as regulation of gene transcription, protein translation, energy metabolism, and cell cycle progression. Our data provide a genome-wide miRNA expression profile in these two wheat cultivars and help functional studies of wheat genomics.
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Affiliation(s)
- Cristina Gómez-Martín
- Department of Pathology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Hui Zhou
- School of Agriculture, Food and Wine, University of Adelaide, Urrbrae, SA, 5064, Australia
| | - José Maria Medina
- Computational Genomics and Bioinformatics Group, Genetics Department, University of Granada, 18071, Granada, Spain.,Bioinformatics Laboratory, Centro de Investigación Biomédica, Biotechnology Institute, PTS, Avda. del Conocimiento S/N, 18100, Granada, Spain
| | - Ernesto Aparicio-Puerta
- Computational Genomics and Bioinformatics Group, Genetics Department, University of Granada, 18071, Granada, Spain.,Bioinformatics Laboratory, Centro de Investigación Biomédica, Biotechnology Institute, PTS, Avda. del Conocimiento S/N, 18100, Granada, Spain.,Instituto de Investigación Biosanitaria Ibs.GRANADA, University of Granada, 18071, Granada, Spain.,Excellence Research Unit "Modelling Nature" (MNat), University of Granada, 18071, Granada, Spain
| | - Michael Hackenberg
- Computational Genomics and Bioinformatics Group, Genetics Department, University of Granada, 18071, Granada, Spain. .,Bioinformatics Laboratory, Centro de Investigación Biomédica, Biotechnology Institute, PTS, Avda. del Conocimiento S/N, 18100, Granada, Spain. .,Instituto de Investigación Biosanitaria Ibs.GRANADA, University of Granada, 18071, Granada, Spain. .,Excellence Research Unit "Modelling Nature" (MNat), University of Granada, 18071, Granada, Spain.
| | - Bujun Shi
- School of Agriculture, Food and Wine, University of Adelaide, Urrbrae, SA, 5064, Australia.
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8
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Fan X, Li H, Guo Y, Sun H, Wang S, Qi Q, Jiang X, Wang Y, Xu X, Qiu C, Li W, Han Z. Integrated multi-omics analysis uncovers roles of mdm-miR164b-MdORE1 in strigolactone-mediated inhibition of adventitious root formation in apple. PLANT, CELL & ENVIRONMENT 2022; 45:3582-3603. [PMID: 36000454 DOI: 10.1111/pce.14422] [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: 01/13/2022] [Revised: 03/01/2022] [Accepted: 03/22/2022] [Indexed: 06/15/2023]
Abstract
Apple is one of the most important fruit crops in temperate regions and largely relies on cutting propagation. Adventitious root formation is crucial for the success of cutting propagation. Strigolactones have been reported to function in rooting of woody plants. In this study, we determined that strigolactones have inhibitory effects on adventitious root formation in apple. Transcriptome analysis identified 12 051 differentially expressed genes over the course of adventitious root initiation, with functions related to organogenesis, cell wall biogenesis or plant development. Further analysis indicated that strigolactones might inhibit adventitious root formation through repressing two core hub genes, MdLAC3 and MdORE1. Combining small RNA and degradome sequencing, as well as dual-luciferase sensor assays, we identified and validated three negatively correlated miRNA-mRNA pairs, including mdm-miR397-MdLAC3 and mdm-miR164a/b-MdORE1. Overexpression of mdm-miR164b and silencing MdORE1 exhibited enhanced adventitious root formation in tobacco and apple, respectively. Finally, we verified the role of mdm-miR164b-MdORE1 in strigolactone-mediated repression of rooting ability. Overall, the identified comprehensive regulatory network in apple not only provides insight into strigolactone-mediated adventitious root formation in other woody plants, but also points to a potential strategy for genetic improvement of rooting capacity in woody plants.
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Affiliation(s)
- Xingqiang Fan
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Hui Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Yushuang Guo
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Haochen Sun
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Shiyao Wang
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Qi Qi
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
- National Engineering Laboratory for Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Xiangning Jiang
- National Engineering Laboratory for Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Yi Wang
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Xuefeng Xu
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Changpeng Qiu
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Wei Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Zhenhai Han
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
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9
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Nagpal P, Reeves PH, Wong JH, Armengot L, Chae K, Rieveschl NB, Trinidad B, Davidsdottir V, Jain P, Gray WM, Jaillais Y, Reed JW. SAUR63 stimulates cell growth at the plasma membrane. PLoS Genet 2022; 18:e1010375. [PMID: 36121899 PMCID: PMC9522268 DOI: 10.1371/journal.pgen.1010375] [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: 02/14/2022] [Revised: 09/29/2022] [Accepted: 08/04/2022] [Indexed: 11/20/2022] Open
Abstract
In plants, regulated cell expansion determines organ size and shape. Several members of the family of redundantly acting Small Auxin Up RNA (SAUR) proteins can stimulate plasma membrane (PM) H+-ATPase proton pumping activity by inhibiting PM-associated PP2C.D phosphatases, thereby increasing the PM electrochemical potential, acidifying the apoplast, and stimulating cell expansion. Similarly, Arabidopsis thaliana SAUR63 was able to increase growth of various organs, antagonize PP2C.D5 phosphatase, and increase H+-ATPase activity. Using a gain-of-function approach to bypass genetic redundancy, we dissected structural requirements for SAUR63 growth-promoting activity. The divergent N-terminal domain of SAUR63 has a predicted basic amphipathic α-helix and was able to drive partial PM association. Deletion of the N-terminal domain decreased PM association of a SAUR63 fusion protein, as well as decreasing protein level and eliminating growth-promoting activity. Conversely, forced PM association restored ability to promote H+-ATPase activity and cell expansion, indicating that SAUR63 is active when PM-associated. Lipid binding assays and perturbations of PM lipid composition indicate that the N-terminal domain can interact with PM anionic lipids. Mutations in the conserved SAUR domain also reduced PM association in root cells. Thus, both the N-terminal domain and the SAUR domain may cooperatively mediate the SAUR63 PM association required to promote growth. Plant organs reach their final shape and size after substantial cell expansion. Proton pumps at the plasma membrane promote cell expansion by acidifying the cell wall to loosen it, and by increasing electrochemical potential across the plasma membrane for solute uptake that maintains intracellular turgor. Plasma-membrane-associated proteins tightly regulate proton pump activity, in order for organs to grow to an appropriate extent. We have studied requirements for activity of one such regulatory protein in the model plant Arabidopsis called SAUR63. This protein is made rapidly in response to plant growth hormones, and it increases proton pump activity to promote organ growth. These activities depend on its binding to anionic lipids in the plasma membrane, and forced plasma membrane association of SAUR63 can increase growth. Many proteins in the same family are found within Arabidopsis and in all land plants, and likely differ in their affinity for the plasma membrane or in other properties. Further studies of other family members may show how such proteins regulate growth under diverse physiological contexts.
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Affiliation(s)
- Punita Nagpal
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, Lyon, France
| | - Paul H. Reeves
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Jeh Haur Wong
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Laia Armengot
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, Lyon, France
| | - Keun Chae
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Nathaniel B. Rieveschl
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Brendan Trinidad
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Vala Davidsdottir
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Prateek Jain
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - William M. Gray
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Yvon Jaillais
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, Lyon, France
| | - Jason W. Reed
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRAE, Lyon, France
- * E-mail:
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10
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Zhao ZX, Yin XX, Li S, Peng YT, Yan XL, Chen C, Hassan B, Zhou SX, Pu M, Zhao JH, Hu XH, Li GB, Wang H, Zhang JW, Huang YY, Fan J, Li Y, Wang WM. miR167d-ARFs Module Regulates Flower Opening and Stigma Size in Rice. RICE (NEW YORK, N.Y.) 2022; 15:40. [PMID: 35876915 PMCID: PMC9314575 DOI: 10.1186/s12284-022-00587-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Flower opening and stigma exertion are two critical traits for cross-pollination during seed production of hybrid rice (Oryza sativa L.). In this study, we demonstrate that the miR167d-ARFs module regulates stigma size and flower opening that is associated with the elongation of stamen filaments and the cell arrangement of lodicules. The overexpression of miR167d (OX167d) resulted in failed elongation of stamen filaments, increased stigma size, and morphological alteration of lodicule, resulting in cleistogamy. Blocking miR167d by target mimicry also led to a morphological alteration of the individual floral organs, including a reduction in stigma size and alteration of lodicule cell morphology, but did not show the cleistogamous phenotype. In addition, the four target genes of miR167d, namely ARF6, ARF12, ARF17, and ARF25, have overlapping functions in flower opening and stigma size. The loss-of-function of a single ARF gene did not influence the flower opening and stigma size, but arf12 single mutant showed a reduced plant height and aborted apical spikelets. However, mutation in ARF12 together with mutation in either ARF6, ARF17, or ARF25 led to the same defective phenotypes that were observed in OX167d, including the failed elongation of stamen filaments, increased stigma size, and morphological alteration of lodicule. These findings indicate that the appropriate expression of miR167d is crucial and the miR167d-ARFs module plays important roles in the regulation of flower opening and stigma size in rice.
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Affiliation(s)
- Zhi-Xue Zhao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiao-Xiao Yin
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Sha Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu-Ting Peng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiu-Lian Yan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chen Chen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Beenish Hassan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shi-Xin Zhou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mei Pu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jing-Hao Zhao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiao-Hong Hu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guo-Bang Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - He Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ji-Wei Zhang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan-Yan Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jing Fan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wen-Ming Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China.
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11
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Gramzow L, Klupsch K, Fernández-Pozo N, Hölzer M, Marz M, Rensing SA, Theißen G. Comparative transcriptomics identifies candidate genes involved in the evolutionary transition from dehiscent to indehiscent fruits in Lepidium (Brassicaceae). BMC PLANT BIOLOGY 2022; 22:340. [PMID: 35836106 PMCID: PMC9281134 DOI: 10.1186/s12870-022-03631-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 05/03/2022] [Indexed: 05/14/2023]
Abstract
BACKGROUND Fruits are the seed-bearing structures of flowering plants and are highly diverse in terms of morphology, texture and maturation. Dehiscent fruits split open upon maturation to discharge their seeds while indehiscent fruits are dispersed as a whole. Indehiscent fruits evolved from dehiscent fruits several times independently in the crucifer family (Brassicaceae). The fruits of Lepidium appelianum, for example, are indehiscent while the fruits of the closely related L. campestre are dehiscent. Here, we investigate the molecular and genetic mechanisms underlying the evolutionary transition from dehiscent to indehiscent fruits using these two Lepidium species as model system. RESULTS We have sequenced the transcriptomes and small RNAs of floral buds, flowers and fruits of L. appelianum and L. campestre and analyzed differentially expressed genes (DEGs) and differently differentially expressed genes (DDEGs). DEGs are genes that show significantly different transcript levels in the same structures (buds, flowers and fruits) in different species, or in different structures in the same species. DDEGs are genes for which the change in expression level between two structures is significantly different in one species than in the other. Comparing the two species, the highest number of DEGs was found in flowers, followed by fruits and floral buds while the highest number of DDEGs was found in fruits versus flowers followed by flowers versus floral buds. Several gene ontology terms related to cell wall synthesis and degradation were overrepresented in different sets of DEGs highlighting the importance of these processes for fruit opening. Furthermore, the fruit valve identity genes FRUITFULL and YABBY3 were among the DEGs identified. Finally, the microRNA miR166 as well as the TCP transcription factors BRANCHED1 (BRC1) and TCP FAMILY TRANSCRIPTION FACTOR 4 (TCP4) were found to be DDEGs. CONCLUSIONS Our study reveals differences in gene expression between dehiscent and indehiscent fruits and uncovers miR166, BRC1 and TCP4 as candidate genes for the evolutionary transition from dehiscent to indehiscent fruits in Lepidium.
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Affiliation(s)
- Lydia Gramzow
- Matthias Schleiden Institute / Genetics, Friedrich Schiller University Jena, 07743, Jena, Germany
| | - Katharina Klupsch
- Matthias Schleiden Institute / Genetics, Friedrich Schiller University Jena, 07743, Jena, Germany
| | - Noé Fernández-Pozo
- Plant Cell Biology, Department of Biology, University of Marburg, 35043, Marburg, Germany
- Departamento de Fruticultura Subtropical y Mediterránea, IHSM - CSIC - UMA, Málaga, 29010, Spain
| | - Martin Hölzer
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, 07743, Jena, Germany
- Present Address: Methodology and Research Infrastructure/Bioinformatics, Robert Koch Institute, 13353, Berlin, Germany
| | - Manja Marz
- RNA Bioinformatics and High-Throughput Analysis, Friedrich Schiller University Jena, 07743, Jena, Germany
| | - Stefan A Rensing
- Plant Cell Biology, Department of Biology, University of Marburg, 35043, Marburg, Germany
- Centre for Biological Signaling Studies (BIOSS), University of Freiburg, 79108, Freiburg, Germany
| | - Günter Theißen
- Matthias Schleiden Institute / Genetics, Friedrich Schiller University Jena, 07743, Jena, Germany.
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12
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Zhou S, Huang K, Zhou Y, Hu Y, Xiao Y, Chen T, Yin M, Liu Y, Xu M, Jiang X. Degradome sequencing reveals an integrative miRNA-mediated gene interaction network regulating rice seed vigor. BMC PLANT BIOLOGY 2022; 22:269. [PMID: 35650544 PMCID: PMC9158300 DOI: 10.1186/s12870-022-03645-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/11/2022] [Indexed: 05/14/2023]
Abstract
BACKGROUND It is well known that seed vigor is essential for agricultural production and rice (Oryza sativa L.) is one of the most important crops in the world. Though we previously reported that miR164c regulates rice seed vigor, but whether and how other miRNAs cooperate with miR164c to regulate seed vigor is still unknown. RESULTS Based on degradome data of six RNA samples isolated from seeds of the wild-type (WT) indica rice cultivar 'Kasalath' as well as two modified lines in 'Kasalath' background (miR164c-silenced line [MIM164c] and miR164c overexpression line [OE164c]), which were subjected to either no aging treatment or an 8-day artificial aging treatment, 1247 different target transcripts potentially cleaved by 421 miRNAs were identified. The miRNA target genes were functionally annotated via GO and KEGG enrichment analyses. By STRING database assay, a miRNA-mediated gene interaction network regulating seed vigor in rice was revealed, which comprised at least four interconnected pathways: the miR5075-mediated oxidoreductase related pathway, the plant hormone related pathway, the miR164e related pathway, and the previously reported RPS27AA related pathway. Knockout and overexpression of the target gene Os02g0817500 of miR5075 decreased and enhanced seed vigor, respectively. By Y2H assay, the proteins encoded by five seed vigor-related genes, Os08g0295100, Os07g0633100, REFA1, OsPER1 and OsGAPC3, were identified to interact with Os02g0817500. CONCLUSIONS miRNAs cooperate to regulate seed vigor in rice via an integrative gene interaction network comprising miRNA target genes and other functional genes. The result provided a basis for fully understanding the molecular mechanisms of seed vigor regulation.
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Affiliation(s)
- Shiqi Zhou
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Kerui Huang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Changsha, 410081, China
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, 415000, China
| | - Yan Zhou
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Yingqian Hu
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Yuchao Xiao
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Ting Chen
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Mengqi Yin
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Yan Liu
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Mengliang Xu
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Changsha, 410081, China
| | - Xiaocheng Jiang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, Changsha, 410081, China.
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13
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Hong WJ, Lee SK, Kim SH, Kim YJ, Moon S, Kim EJ, Silva J, Jung KH. Comparative transcriptome analysis of pollen and anther wall reveals novel insights into the regulatory mechanisms underlying anther wall development and its dehiscence in rice. PLANT CELL REPORTS 2022; 41:1229-1242. [PMID: 35249124 DOI: 10.1007/s00299-022-02852-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/15/2022] [Indexed: 05/25/2023]
Abstract
To further understand the regulatory mechanism for anther dehiscence in rice, we carried out transcriptome analysis for the following two tissues: the anther wall and pollen at the anthesis stage. With the anatomical meta-expression data, in addition to these tissues, the differentially expressed genes (DEGs) between the two tissues were further refined to identify 1,717 pollen-preferred genes and 534 anther wall-preferred genes. A GUS transgenic line and RT-qPCR analysis for anther wall-preferred genes supported the fidelity of our gene candidates for further analysis. The refined DEGs were functionally classified through Gene Ontology (GO) enrichment and MapMan analyses. Through the analysis of cis-acting elements and alternative splicing variants, we also suggest the feature of regulatory sequences in promoter regions for anther wall-preferred expression and provide information of the unique splicing variants in anther wall. Subsequently, it was found that hormone signaling and the resulting transcriptional regulation pathways may play an important role in anther dehiscence and anther wall development. Our results could provide useful insights into future research to broaden the molecular mechanism of anther dehiscence or anther wall development in rice.
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Affiliation(s)
- Woo-Jong Hong
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea
| | - Su Kyoung Lee
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea
| | - Seok-Hui Kim
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea
| | - Yu-Jin Kim
- Department of Life Science and Environmental Biochemistry, Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, South Korea
| | - Sunok Moon
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea
| | - Eui-Jung Kim
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea
| | - Jeniffer Silva
- Department of Research and Development, The Bridge Biofoundry, Ciudad del Saber, Clayton, 0843-03081, Panama
| | - Ki-Hong Jung
- Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin, 17104, South Korea.
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14
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Zhao Y, Wang Y, Zhao X, Yan M, Ren Y, Yuan Z. ARF6s Identification and Function Analysis Provide Insights Into Flower Development of Punica granatum L. FRONTIERS IN PLANT SCIENCE 2022; 13:833747. [PMID: 35321445 PMCID: PMC8937018 DOI: 10.3389/fpls.2022.833747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Based on the genome and small-RNA sequencing of pomegranate, miRNA167 and three target genes PgARF6 were identified in "Taishanhong" genome. Three PgARF6 genes and their corresponding protein sequences, expression patterns in pomegranate flower development and under exogenous hormones treatments were systematically analyzed in this paper. We found that PgARF6s are nuclear proteins with conserved structures. However, PgARF6s had different protein structures and expression profiles in pomegranate flower development. At the critical stages of pomegranate ovule sterility (8.1-14.0 mm), the expression levels of PgARF6s in bisexual flowers were lower than those in functional male flowers. Interestingly, PgARF6c expression level was significantly higher than PgARF6a and PgARF6b. Under the treatment of exogenous IBA and 6-BA, PgARF6s were down-regulated, and the expression of PgARF6c was significantly inhibited. PgmiR167a and PgmiR167d had the binding site on PgARF6 genes sequences, and PgARF6a has the directly targeted regulatory relationship with PgmiR167a in pomegranate. At the critical stage of ovule development (8.1-12.0 mm), exogenous IBA and 6-BA promoted the content of GA and ZR accumulation, inhibited BR accumulation. There was a strong correlation between the expression of PgARF6a and PgARF6b. Under exogenous hormone treatment, the content of ZR, BR, GA, and ABA were negatively correlated with the expressions of PgARF6 genes. However, JA was positively correlated with PgARF6a and PgARF6c under IBA treatment. Thus, our results provide new evidence for PgARF6 genes involving in ovule sterility in pomegranate flowers.
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Affiliation(s)
- Yujie Zhao
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Yuying Wang
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Xueqing Zhao
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Ming Yan
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Yuan Ren
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Zhaohe Yuan
- Co-innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
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15
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Åstrand J, Knight C, Robson J, Talle B, Wilson ZA. Evolution and diversity of the angiosperm anther: trends in function and development. PLANT REPRODUCTION 2021; 34:307-319. [PMID: 34173886 PMCID: PMC8566645 DOI: 10.1007/s00497-021-00416-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/28/2021] [Indexed: 05/21/2023]
Abstract
Anther development and dehiscence is considered from an evolutionary perspective to identify drivers for differentiation, functional conservation and to identify key questions for future male reproduction research. Development of viable pollen and its timely release from the anther are essential for fertilisation of angiosperm flowers. The formation and subsequent dehiscence of the anther are under tight regulatory control, and these processes are remarkably conserved throughout the diverse families of the angiosperm clade. Anther development is a complex process, which requires timely formation and communication between the multiple somatic anther cell layers (the epidermis, endothecium, middle layer and tapetum) and the developing pollen. These layers go through regulated development and selective degeneration to facilitate the formation and ultimate release of the pollen grains. Insight into the evolution and divergence of anther development and dehiscence, especially between monocots and dicots, is driving greater understanding of the male reproductive process and increased, resilient crop yields. This review focuses on anther structure from an evolutionary perspective by highlighting their diversity across plant species. We summarise new findings that illustrate the complexities of anther development and evaluate how they challenge established models of anther form and function, and how they may help to deliver future sustainable crop yields.
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Affiliation(s)
- Johanna Åstrand
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Christopher Knight
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Jordan Robson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Behzad Talle
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Zoe A. Wilson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
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16
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Wang KL, Zhang Y, Zhang HM, Lin XC, Xia R, Song L, Wu AM. MicroRNAs play important roles in regulating the rapid growth of the Phyllostachys edulis culm internode. THE NEW PHYTOLOGIST 2021; 231:2215-2230. [PMID: 34101835 DOI: 10.1111/nph.17542] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Moso bamboo (Phyllostachys edulis) is a fast-growing species with uneven growth and lignification from lower to upper segments within one internode. MicroRNAs (miRNAs) play a vital role in post-transcriptional regulation in plants. However, how miRNAs regulate fast growth in bamboo internodes is poorly understood. In this study, one moso bamboo internode was divided during early rapid growth into four segments called F4 (bottom) to F1 (upper) and these were then analysed for transcriptomes, miRNAs and degradomes. The F4 segment had a higher number of actively dividing cells as well as a higher content of auxin (IAA), cytokinin (CK) and gibberellin (GA) compared with the F1 segment. RNA-seq analysis showed DNA replication and cell division-associated genes highly expressed in F4 rather than in F1. In total, 63 miRNAs (DEMs) were identified as differentially expressed between F4 and F1. The degradome and the transcriptome indicated that many downstream transcription factors and hormonal responses genes were modulated by DEMs. Several miR-target interactions were further validated by tobacco co-infiltration. Our findings give new insights into miRNA-mediated regulatory pathways in bamboo, and will contribute to a comprehensive understanding of the molecular mechanisms governing rapid growth.
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Affiliation(s)
- Kai-Li Wang
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, 510642, China
| | - Yuanyuan Zhang
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, 510642, China
| | - Heng-Mu Zhang
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xin-Chun Lin
- The State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, 311300, China
| | - Rui Xia
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Lili Song
- The State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, 311300, China
| | - Ai-Min Wu
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou, 510642, China
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ZmFAR1 and ZmABCG26 Regulated by microRNA Are Essential for Lipid Metabolism in Maize Anther. Int J Mol Sci 2021; 22:ijms22157916. [PMID: 34360681 PMCID: PMC8348775 DOI: 10.3390/ijms22157916] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/18/2021] [Accepted: 07/21/2021] [Indexed: 12/12/2022] Open
Abstract
The function and regulation of lipid metabolic genes are essential for plant male reproduction. However, expression regulation of lipid metabolic genic male sterility (GMS) genes by noncoding RNAs is largely unclear. Here, we systematically predicted the microRNA regulators of 34 maize white brown complex members in ATP-binding cassette transporter G subfamily (WBC/ABCG) genes using transcriptome analysis. Results indicate that the ZmABCG26 transcript was predicted to be targeted by zma-miR164h-5p, and their expression levels were negatively correlated in maize B73 and Oh43 genetic backgrounds based on both transcriptome data and qRT-PCR experiments. CRISPR/Cas9-induced gene mutagenesis was performed on ZmABCG26 and another lipid metabolic gene, ZmFAR1. DNA sequencing, phenotypic, and cytological observations demonstrated that both ZmABCG26 and ZmFAR1 are GMS genes in maize. Notably, ZmABCG26 proteins are localized in the endoplasmic reticulum (ER), chloroplast/plastid, and plasma membrane. Furthermore, ZmFAR1 shows catalytic activities to three CoA substrates in vitro with the activity order of C12:0-CoA > C16:0-CoA > C18:0-CoA, and its four key amino acid sites were critical to its catalytic activities. Lipidomics analysis revealed decreased cutin amounts and increased wax contents in anthers of both zmabcg26 and zmfar1 GMS mutants. A more detailed analysis exhibited differential changes in 54 monomer contents between wild type and mutants, as well as between zmabcg26 and zmfar1. These findings will promote a deeper understanding of miRNA-regulated lipid metabolic genes and the functional diversity of lipid metabolic genes, contributing to lipid biosynthesis in maize anthers. Additionally, cosegregating molecular markers for ZmABCG26 and ZmFAR1 were developed to facilitate the breeding of male sterile lines.
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Marciniak K, Przedniczek K. Anther dehiscence is regulated by gibberellic acid in yellow lupine (Lupinus luteus L.). BMC PLANT BIOLOGY 2021; 21:314. [PMID: 34215194 PMCID: PMC8252261 DOI: 10.1186/s12870-021-03085-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 06/04/2021] [Indexed: 05/28/2023]
Abstract
BACKGROUND Anther dehiscence resulting in the release of pollen grains is tightly regulated in a spatiotemporal manner by various factors. In yellow lupine (Lupinus luteus L.), a species that shows cleistogamy, the anthers split before the flowers open, but the course and regulation of this process are unknown. The specific control of anther development takes place via hormonal pathways, the wide action of which ensures reproductive success. In our previous research concerning flower and early pod development in yellow lupine, we showed that the lowest transcript level of LlDELLA1, a main repressor of gibberellin (GA) signalling, occurs approximately at the time of anther opening; therefore, the main purpose of this study was to precisely investigate the gibberellic acid (GA3)-dependent regulation of the anther dehiscence in this species. RESULTS In this paper, we showed the specific changes in the yellow lupine anther structure during dehiscence, including secondary thickening in the endothecium by lignocellulosic deposition, enzymatic cell wall breakdown at the septum/stomium and cell degeneration via programmed cell death (PCD), and identified several genes widely associated with this process. The expression profile of genes varied over time, with the most intense mRNA accumulation in the phases prior to or at the time of anther opening. The transcriptional activity also revealed that these genes are highly coexpressed and regulated in a GA-dependent manner. The cellular and tissue localization of GA3 showed that these molecules are present before anther opening, mainly in septum cells, near the vascular bundle and in the endothecium, and that they are subsequently undetectable. GA3 localization strongly correlates with the transcriptional activity of genes related to GA biosynthesis and deactivation. The results also suggest that GA3 controls LlGAMYB expression via an LlMIR159-dependent pathway. CONCLUSIONS The presented results show a clear contribution of GA3 in the control of the extensive anther dehiscence process in yellow lupine. Understanding the processes underlying pollen release at the hormonal and molecular levels is a significant aspect of controlling fertility in this economically important legume crop species and is of increasing interest to breeders.
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Affiliation(s)
- Katarzyna Marciniak
- Faculty of Biological and Veterinary Sciences, Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Lwowska 1 St, 87-100, Toruń, Poland.
| | - Krzysztof Przedniczek
- Faculty of Biological and Veterinary Sciences, Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Lwowska 1 St, 87-100, Toruń, Poland
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Yu J, Bennett D, Dardick C, Zhebentyayeva T, Abbott AG, Liu Z, Staton ME. Genome-Wide Changes of Regulatory Non-Coding RNAs Reveal Pollen Development Initiated at Ecodormancy in Peach. Front Mol Biosci 2021; 8:612881. [PMID: 33968979 PMCID: PMC8098804 DOI: 10.3389/fmolb.2021.612881] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/15/2021] [Indexed: 11/15/2022] Open
Abstract
Bud dormancy is under the regulation of complex mechanisms including genetic and epigenetic factors. To study the function of regulatory non-coding RNAs in winter dormancy release, we analyzed the small RNA and long non-coding RNA (lncRNA) expression from peach (Prunus persica) floral buds in endodormancy, ecodormancy and bud break stages. Small RNAs underwent a major shift in expression primarily between dormancy and flowering with specific pairs of microRNAs and their mRNA target genes undergoing coordinated differential expression. From endodormancy to ecodormancy, ppe-miR6285 was significantly upregulated while its target gene, an ASPARAGINE-RICH PROTEIN involved in the regulation of abscisic acid signaling, was downregulated. At ecodormancy, ppe-miR2275, a homolog of meiosis-specific miR2275 across angiosperms, was significantly upregulated, supporting microsporogenesis in anthers at a late stage of dormancy. The expression of 785 lncRNAs, unlike the overall expression pattern in the small RNAs, demonstrated distinctive expression signatures across all dormancy and flowering stages. We predicted that a subset of lncRNAs were targets of microRNAs and found 18 lncRNA/microRNA target pairs with both differentially expressed across time points. The genome-wide differential expression and network analysis of non-coding RNAs and mRNAs from the same tissues provide new candidate loci for dormancy regulation and suggest complex noncoding RNA interactions control transcriptional regulation across these key developmental time points.
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Affiliation(s)
- Jiali Yu
- Genome Science and Technology Program, University of Tennessee, Knoxville, TN, United States
| | - Dennis Bennett
- Appalachian Fruit Research Station, United States Department of Agriculture-Agriculture Research Service, Kearneysville, WV, United States
| | - Christopher Dardick
- Appalachian Fruit Research Station, United States Department of Agriculture-Agriculture Research Service, Kearneysville, WV, United States
| | - Tetyana Zhebentyayeva
- Department of Ecosystem Science and Management, Schatz Center for Tree Molecular Genetics, The Pennsylvania State University, University Park, PA, United States
| | - Albert G Abbott
- Forest Health Research and Education Center, University of Kentucky, Lexington, KY, United States
| | - Zongrang Liu
- Appalachian Fruit Research Station, United States Department of Agriculture-Agriculture Research Service, Kearneysville, WV, United States
| | - Margaret E Staton
- Genome Science and Technology Program, University of Tennessee, Knoxville, TN, United States.,Department of Entomology and Plant Pathology, Institute of Agriculture, University of Tennessee, Knoxville, TN, United States
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Dukowic-Schulze S, van der Linde K. Oxygen, secreted proteins and small RNAs: mobile elements that govern anther development. PLANT REPRODUCTION 2021; 34:1-19. [PMID: 33492519 PMCID: PMC7902584 DOI: 10.1007/s00497-020-00401-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/24/2020] [Indexed: 05/24/2023]
Abstract
Correct anther development is essential for male fertility and subsequently agricultural yield. Defects in anther development range from the early stage of stamen formation until the late stage of tapetum degeneration. In particular, the specification of the four distinct somatic layers and the inner sporogenous cells need perfect orchestration relying on precise cell-cell communication. Up to now, several signals, which coordinate the anther´s developmental program, have been identified. Among the known signals are phytohormones, environmental conditions sensed via glutaredoxins, several receptor-like kinases triggered by ligands like MAC1, and small RNAs such as miRNAs and the monocot-prevalent reproductive phasiRNAs. Rather than giving a full review on anther development, here we discuss anther development with an emphasis on mobile elements like ROS/oxygen, secreted proteins and small RNAs (only briefly touching on phytohormones), how they might act and interact, and what the future of this research area might reveal.
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Affiliation(s)
- Stefanie Dukowic-Schulze
- Department of Cell Biology and Plant Biochemistry, University of Regensburg, Regensburg, Germany.
| | - Karina van der Linde
- Department of Cell Biology and Plant Biochemistry, University of Regensburg, Regensburg, Germany.
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21
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Li Y, Li J, Chen Z, Wei Y, Qi Y, Wu C. OsmiR167a-targeted auxin response factors modulate tiller angle via fine-tuning auxin distribution in rice. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:2015-2026. [PMID: 32061119 PMCID: PMC7540336 DOI: 10.1111/pbi.13360] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 02/04/2020] [Indexed: 05/25/2023]
Abstract
Rice tiller angle determines plant growth density and further contributes grain production. Although a few genes have been characterized to regulate tiller angle in rice, the molecular mechanism underlying the control of tiller angle via microRNA is poorly understood. Here, we report that rice tiller angle is controlled by OsmiR167a-targeted auxin response factors OsARF12, OsARF17 and OsARF25. In the overexpression of OsMIR167a plants, the expression of OsARF12, OsARF17 and OsARF25 was severely repressed and displayed larger tiller angle as well as the osarf12/osarf17 and osarf12/ osarf25 plants. In addition, those plants showed compromised abnormal auxin distribution and less sensitive to gravity. We also demonstrate that OsARF12, OsARF17 and OsARF25 function redundantly and might be involved in HSFA2D and LAZY1-dependent asymmetric auxin distribution pathway to control rice tiller angle. Our results reveal that OsmiR167a represses its targets, OsARF12, OsARF17 and OsARF25, to control rice tiller angle by fine-tuning auxin asymmetric distribution in shoots.
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Affiliation(s)
- Yan Li
- National Key Laboratory of Crop Genetic ImprovementNational Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
- College of Life SciencesHubei UniversityWuhanChina
| | - Jiali Li
- National Key Laboratory of Crop Genetic ImprovementNational Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
- Institute of Rice ResearchGuizhou Academy of Agricultural SciencesGuiyangChina
| | - Zhihui Chen
- National Key Laboratory of Crop Genetic ImprovementNational Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Yi Wei
- National Key Laboratory of Crop Genetic ImprovementNational Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Yanhua Qi
- State Key Laboratory of Plant Physiology and BiochemistryCollege of Life SciencesZhejiang UniversityHangzhouChina
| | - Changyin Wu
- National Key Laboratory of Crop Genetic ImprovementNational Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
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Zhang C, Chen D, Yang G, Yu X, Wu J. Rice Stripe Mosaic Virus-Encoded P4 Is a Weak Suppressor of Viral RNA Silencing and Is Required for Disease Symptom Development. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2020; 33:412-422. [PMID: 31841359 DOI: 10.1094/mpmi-08-19-0239-ia] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Viral suppressors of RNA silencing (VSRs) are a cluster of viral proteins that have evolved to counteract eukaryotic antiviral RNA silencing pathways, thereby contributing to viral pathogenicity. In this study, we revealed that the matrix protein P4 encoded by rice stripe mosaic virus (RSMV), which is an emerging cytoplasmic rhabdovirus, is a weak RNA silencing suppressor. By conducting yeast two-hybrid, bimolecular fluorescence complementation, and subcellular colocalization assays, we proved that P4 interacts with the rice endogenous suppressor of gene silencing 3 (OsSGS3). We also determined that P4 overexpression has no effect on OsSGS3 transcription. However, P4 can promote the degradation of OsSGS3 via ubiquitination and autophagy. Additionally, a potato virus X-based expression system was used to confirm that P4 enhances the development of mosaic symptoms on Nicotiana benthamiana leaves by promoting hydrogen peroxide accumulation but not cell death. To verify whether P4 is a pathogenicity factor in host plants, we generated transgenic P4-overexpressing rice plants that exhibited disease-related developmental defects including decreased plant height and excessive tillering. Our data suggest that RSMV-encoded P4 serves as a weak VSR that inhibits antiviral RNA silencing by targeting OsSGS3.
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Affiliation(s)
- Chao Zhang
- Vector-borne Virus Research Center, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Dong Chen
- Vector-borne Virus Research Center, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Guoyi Yang
- Vector-borne Virus Research Center, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xiyuan Yu
- Vector-borne Virus Research Center, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jianguo Wu
- Vector-borne Virus Research Center, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Plant Virology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Wei SJ, Chai S, Zhu RM, Duan CY, Zhang Y, Li S. HUA ENHANCER1 Mediates Ovule Development. FRONTIERS IN PLANT SCIENCE 2020; 11:397. [PMID: 32351522 PMCID: PMC7174553 DOI: 10.3389/fpls.2020.00397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/19/2020] [Indexed: 05/03/2023]
Abstract
Ovules are female reproductive organs of angiosperms, containing sporophytic integuments and gametophytic embryo sacs. After fertilization, embryo sacs develop into embryos and endosperm whereas integuments into seed coat. Ovule development is regulated by transcription factors (TF) whose expression is often controlled by microRNAs. Mutations of Arabidopsis DICER-LIKE 1 (DCL1), a microRNA processing protein, caused defective ovule development and reduced female fertility. However, it was not clear whether other microRNA processing proteins participate in this process and how defective ovule development influenced female fertility. We report that mutations of HUA ENHANCER1 (HEN1) and HYPONASTIC LEAVES 1 (HYL1) interfered with integument growth. The sporophytic defect caused abnormal embryo sac development and inability of mutant ovules to attract pollen tubes, leading to reduced female fertility. We show that the role of HEN1 in integument growth is cell-autonomous. Although AUXIN RESPONSE FACTOR 6 (ARF6) and ARF8 were ectopically expressed in mutant ovules, consistent with the reduction of microRNA167 in hen1, introducing arf6;arf8 did not suppress ovule defects of hen1, suggesting the involvement of more microRNAs in this process. Results presented indicate that the microRNA processing machinery is critical for ovule development and seed production through multiple microRNAs and their targets.
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24
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Acosta IF, Przybyl M. Jasmonate Signaling during Arabidopsis Stamen Maturation. PLANT & CELL PHYSIOLOGY 2019; 60:2648-2659. [PMID: 31651948 PMCID: PMC6896695 DOI: 10.1093/pcp/pcz201] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The last stages of stamen development, collectively called stamen maturation, encompass pollen viability, filament elongation and anther dehiscence or opening. These processes are essential for male fertility in Arabidopsis and require the function of jasmonate signaling. There is a good understanding of jasmonate synthesis, perception and transcriptional outputs in Arabidopsis stamens. In addition, the spatiotemporal localization of jasmonate signaling components at the tissue and cellular levels has started to emerge in recent years. However, the ultimate cellular functions activated by jasmonate to promote stamen maturation remain unknown. The hormones auxin and gibberellin have been proposed to control the activation of jasmonate synthesis to promote stamen maturation, although we hypothesize that this action is rather indirect. In this review, we examine these different areas, attempt to clarify some confusing aspects found in the literature and raise testable hypothesis that may help to further understand how jasmonate controls male fertility in Arabidopsis.
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Affiliation(s)
- Ivan F Acosta
- Max Planck Institute for Plant Breeding Research, Carl-von-Linn�-Weg 10, 50829 Cologne, Germany
| | - Marine Przybyl
- Max Planck Institute for Plant Breeding Research, Carl-von-Linn�-Weg 10, 50829 Cologne, Germany
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