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Hui W, Wu H, Zheng H, Wang K, Yang T, Fan J, Wu J, Wang J, Al Mutairi AA, Yang H, Yang C, Cui B, Loake GJ, Gong W. Genome-wide characterization of RR gene family members in Zanthoxylum armatum and the subsequent functional characterization of the C-type RR. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108943. [PMID: 39032447 DOI: 10.1016/j.plaphy.2024.108943] [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: 12/27/2023] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Response Regulators (RRs) are crucial regulators in plant development and stress responses, comprising A-type, B-type, C-type, and pseudo-RR subfamilies. However, previous studies have often focused on specific subfamilies, which restricts our understanding of the complete RR gene family. In this study, we conducted a comprehensive analysis of 63 RR members from Zanthoxylum armatum, using phylogenetic relationships, motif composition, cis-acting elements, gene duplication and collinearity analyses. Segmental repeats among ZaRR genes enhanced the various environmental adaptabilities of Z. armatum, and the B-type ZaRR exhibited significant collinearity with the RRs in P. trichocarpa and C. sinensis. Cis-element analysis indicated ZaRRs play a significant role in abiotic stress and phytohormone pathways, particularly in light, drought, cold, abscisic acid (ABA) and salicylic acid (SA) responses. Abundant Ethylene Response Factor (ERF) and reproduction-associated binding sites in ZaRR promoters suggested their roles in stress and reproductive processes. A-type ZaRRs were implicated in plant vegetative and reproductive growth, whereas B-type ZaRRs contributed to both growth and stress responses. C-type ZaRRs were associated with plant reproductive growth, whereas pseudo-RRs may function in plant stress responses, such as water logging, cold, and response to ethylene (ETH), SA, and jasmonic acid (JA). Ectopic expression of ZaRR24, a C-type RR, inhibits growth, induces early flowering, and shortens fruit length in Arabidopsis. ZaRR24 overexpression also affected the expression of A- and B-type RRs, as well as floral meristem and organ identity genes. These findings establish a solid and comprehensive foundation for RR gene research in Z. armatum, and provide a platform for investigating signal transduction in other woody plants.
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Affiliation(s)
- Wenkai Hui
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Han Wu
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hao Zheng
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kai Wang
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ting Yang
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jiangtao Fan
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jiaojiao Wu
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jingyan Wang
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Ahmed A Al Mutairi
- Biology Department, College of Science, Jouf University, Sakaka, 41412, Saudi Arabia
| | - Hua Yang
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chunlin Yang
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Beimi Cui
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK.
| | - Gary J Loake
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK.
| | - Wei Gong
- Key Laboratory of Ecological Forestry Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China.
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Altamura MM, Piacentini D, Della Rovere F, Fattorini L, Valletta A, Falasca G. Plastid dynamism integrates development and environment. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 213:108813. [PMID: 38861821 DOI: 10.1016/j.plaphy.2024.108813] [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: 04/26/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/13/2024]
Abstract
In land plants plastid type differentiation occurs concomitantly with cellular differentiation and the transition from one type to another is under developmental and environmental control. Plastid dynamism is based on a bilateral communication between plastids and nucleus through anterograde and retrograde signaling. Signaling occurs through the interaction with specific phytohormones (abscisic acid, strigolactones, jasmonates, gibberellins, brassinosteroids, ethylene, salicylic acid, cytokinin and auxin). The review is focused on the modulation of plastid capabilities at both transcriptional and post-translational levels at the crossroad between development and stress, with a particular attention to the chloroplast, because the most studied plastid type. The role of plastid-encoded and nuclear-encoded proteins for plastid development and stress responses, and the changes of plastid fate through the activity of stromules and plastoglobules, are discussed. Examples of plastid dynamism in response to soil stress agents (salinity, lead, cadmium, arsenic, and chromium) are described. Albinism and root greening are described based on the modulation activities of auxin and cytokinin. The physiological and functional responses of the sensory epidermal and vascular plastids to abiotic and biotic stresses along with their specific roles in stress sensing are described together with their potential modulation of retrograde signaling pathways. Future research perspectives include an in-depth study of sensory plastids to explore their potential for establishing a transgenerational memory to stress. Suggestions about anterograde and retrograde pathways acting at interspecific level and on the lipids of plastoglobules as a novel class of plastid morphogenic agents are provided.
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Affiliation(s)
| | - Diego Piacentini
- Department of Environmental Biology, Sapienza University of Rome, Italy
| | | | - Laura Fattorini
- Department of Environmental Biology, Sapienza University of Rome, Italy
| | - Alessio Valletta
- Department of Environmental Biology, Sapienza University of Rome, Italy
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Chen C, Hu Y, Ikeuchi M, Jiao Y, Prasad K, Su YH, Xiao J, Xu L, Yang W, Zhao Z, Zhou W, Zhou Y, Gao J, Wang JW. Plant regeneration in the new era: from molecular mechanisms to biotechnology applications. SCIENCE CHINA. LIFE SCIENCES 2024; 67:1338-1367. [PMID: 38833085 DOI: 10.1007/s11427-024-2581-2] [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: 01/31/2024] [Accepted: 03/26/2024] [Indexed: 06/06/2024]
Abstract
Plants or tissues can be regenerated through various pathways. Like animal regeneration, cell totipotency and pluripotency are the molecular basis of plant regeneration. Detailed systematic studies on Arabidopsis thaliana gradually unravel the fundamental mechanisms and principles underlying plant regeneration. Specifically, plant hormones, cell division, epigenetic remodeling, and transcription factors play crucial roles in reprogramming somatic cells and reestablishing meristematic cells. Recent research on basal non-vascular plants and monocot crops has revealed that plant regeneration differs among species, with various plant species using distinct mechanisms and displaying significant differences in regenerative capacity. Conducting multi-omics studies at the single-cell level, tracking plant regeneration processes in real-time, and deciphering the natural variation in regenerative capacity will ultimately help understand the essence of plant regeneration, improve crop regeneration efficiency, and contribute to future crop design.
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Affiliation(s)
- Chunli Chen
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China.
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yuxin Hu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences (CAS), China National Botanical Garden, Beijing, 100093, China.
| | - Momoko Ikeuchi
- Division of Biological Sciences, Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, 630-0192, Japan.
| | - Yuling Jiao
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing, 100871, China.
- Peking-Tsinghua Center for Life Sciences, Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China.
| | - Kalika Prasad
- Indian Institute of Science Education and Research, Pune, 411008, India.
- , Thiruvananthapuram, 695551, India.
| | - Ying Hua Su
- State Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China.
- Sino-German Joint Research Center on Agricultural Biology, Shandong Agricultural University, Tai'an, 271018, China.
| | - Jun Xiao
- Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology (IGDB), CAS, Beijing, 100101, China.
- CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), IGDB, CAS, Beijing, 100101, China.
| | - Lin Xu
- National Key Laboratory of Plant Molecular Genetics, CEMPS, Institute of Plant Physiology and Ecology (SIPPE), CAS, Shanghai, 200032, China.
| | - Weibing Yang
- National Key Laboratory of Plant Molecular Genetics, CEMPS, Institute of Plant Physiology and Ecology (SIPPE), CAS, Shanghai, 200032, China.
- CEPAMS, SIPPE, CAS, Shanghai, 200032, China.
| | - Zhong Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, CEMPS, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China.
| | - Wenkun Zhou
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
| | - Yun Zhou
- Department of Botany and Plant Pathology and Center for Plant Biology, Purdue University, West Lafayette, 47907, USA.
| | - Jian Gao
- National Key Laboratory of Plant Molecular Genetics, CEMPS, Institute of Plant Physiology and Ecology (SIPPE), CAS, Shanghai, 200032, China
| | - Jia-Wei Wang
- National Key Laboratory of Plant Molecular Genetics, CEMPS, Institute of Plant Physiology and Ecology (SIPPE), CAS, Shanghai, 200032, China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
- Key Laboratory of Plant Carbon Capture, CAS, Shanghai, 200032, China.
- New Cornerstone Science Laboratory, Shanghai, 200032, China.
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Nongpiur RC, Rawat N, Singla-Pareek SL, Pareek A. OsRR26, a type-B response regulator, modulates salinity tolerance in rice via phytohormone-mediated ROS accumulation in roots and influencing reproductive development. PLANTA 2024; 259:96. [PMID: 38517516 DOI: 10.1007/s00425-024-04366-6] [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: 09/01/2023] [Accepted: 02/15/2024] [Indexed: 03/24/2024]
Abstract
MAIN CONCLUSION OsRR26 is a cytokinin-responsive response regulator that promotes phytohormone-mediated ROS accumulation in rice roots, regulates seedling growth, spikelet fertility, awn development, represses NADPH oxidases, and negatively affects salinity tolerance. Plant two-component systems (TCS) play a pivotal role in phytohormone signaling, stress responses, and circadian rhythm. However, a significant knowledge gap exists regarding TCS in rice. In this study, we utilized a functional genomics approach to elucidate the role of OsRR26, a type-B response regulator in rice. Our results demonstrate that OsRR26 is responsive to cytokinin, ABA, and salinity stress, serving as the ortholog of Arabidopsis ARR11. OsRR26 primarily localizes to the nucleus and plays a crucial role in seedling growth, spikelet fertility, and the suppression of awn development. Exogenous application of cytokinin led to distinct patterns of reactive oxygen species (ROS) accumulation in the roots of both WT and transgenic plants (OsRR26OE and OsRR26KD), indicating the potential involvement of OsRR26 in cytokinin-mediated ROS signaling in roots. The application of exogenous ABA resulted in varied cellular compartmentalization of ROS between the WT and transgenic lines. Stress tolerance assays of these plants revealed that OsRR26 functions as a negative regulator of salinity stress tolerance across different developmental stages in rice. Physiological and biochemical analyses unveiled that the knockdown of OsRR26 enhances salinity tolerance, characterized by improved chlorophyll retention and the accumulation of soluble sugars, K+ content, and amino acids, particularly proline.
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Affiliation(s)
- Ramsong Chantre Nongpiur
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Nishtha Rawat
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sneh Lata Singla-Pareek
- Plant Stress Biology, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Ashwani Pareek
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
- National Agri-Food Biotechnology Institute, Mohali, 140306, India.
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5
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Yang Y, Wang L, Zhang D, Che Z, Wang Q, Cui R, Zhao W, Huang F, Zhang H, Cheng H, Yu D. Soybean type-B response regulator GmRR1 mediates phosphorus uptake and yield by modifying root architecture. PLANT PHYSIOLOGY 2024; 194:1527-1544. [PMID: 37882637 DOI: 10.1093/plphys/kiad570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/27/2023]
Abstract
Phosphorus (P) plays a pivotal role in plant growth and development. Low P stress can greatly hamper plant growth. Here, we identified a QTL (named QPH-9-1), which is associated with P efficiency across multiple environments through linkage analysis and genome-wide association study. Furthermore, we successfully cloned the underlying soybean (Glycine max) gene GmRR1 (a soybean type-B Response Regulator 1) that encodes a type-B response regulator protein. Knockout of GmRR1 resulted in a substantial increase in plant height, biomass, P uptake efficiency, and yield-related traits due to the modification of root structure. In contrast, overexpression of GmRR1 in plants resulted in a decrease in these phenotypes. Further analysis revealed that knockout of GmRR1 substantially increased the levels of auxin and ethylene in roots, thereby promoting root hair formation and growth by promoting the formation of root hair primordium and lengthening the root apical meristem. Yeast two-hybrid, bimolecular fluorescence complementation, and dual-luciferase assays demonstrated an interaction between GmRR1 and Histidine-containing Phosphotransmitter protein 1. Expression analysis suggested that these proteins coparticipated in response to low P stress. Analysis of genomic sequences showed that GmRR1 underwent a selection during soybean domestication. Taken together, this study provides further insights into how plants respond to low P stress by modifying root architecture through phytohormone pathways.
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Affiliation(s)
- Yuming Yang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Li Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Dan Zhang
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Zhijun Che
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Qing Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruifan Cui
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Wei Zhao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Huang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Hengyou Zhang
- Northeast Institute of Geography and Agroecology, Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences, Harbin 150081, China
| | - Hao Cheng
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Deyue Yu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
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6
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Zhou CM, Li JX, Zhang TQ, Xu ZG, Ma ML, Zhang P, Wang JW. The structure of B-ARR reveals the molecular basis of transcriptional activation by cytokinin. Proc Natl Acad Sci U S A 2024; 121:e2319335121. [PMID: 38198526 PMCID: PMC10801921 DOI: 10.1073/pnas.2319335121] [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: 11/04/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024] Open
Abstract
The phytohormone cytokinin has various roles in plant development, including meristem maintenance, vascular differentiation, leaf senescence, and regeneration. Prior investigations have revealed that cytokinin acts via a phosphorelay similar to the two-component system by which bacteria sense and respond to external stimuli. The eventual targets of this phosphorelay are type-B ARABIDOPSIS RESPONSE REGULATORS (B-ARRs), containing the conserved N-terminal receiver domain (RD), middle DNA binding domain (DBD), and C-terminal transactivation domain. While it has been established for two decades that the phosphoryl transfer from a specific histidyl residue in ARABIDOPSIS HIS PHOSPHOTRANSFER PROTEINS (AHPs) to an aspartyl residue in the RD of B-ARRs results in a rapid transcriptional response to cytokinin, the underlying molecular basis remains unclear. In this work, we determine the crystal structures of the RD-DBD of ARR1 (ARR1RD-DBD) as well as the ARR1DBD-DNA complex from Arabidopsis. Analyses of the ARR1DBD-DNA complex have revealed the structural basis for sequence-specific recognition of the GAT trinucleotide by ARR1. In particular, comparing the ARR1RD-DBD and ARR1DBD-DNA structures reveals that unphosphorylated ARR1RD-DBD exists in a closed conformation with extensive contacts between the RD and DBD. In vitro and vivo functional assays have further suggested that phosphorylation of the RD weakens its interaction with DBD, subsequently permits the DNA binding capacity of DBD, and promotes the transcriptional activity of ARR1. Our findings thus provide mechanistic insights into phosphorelay activation of gene transcription in response to cytokinin.
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Affiliation(s)
- Chuan-Miao Zhou
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Jian-Xu Li
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai201602, China
| | - Tian-Qi Zhang
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Zhou-Geng Xu
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Miao-Lian Ma
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- Key Laboratory of Plant Carbon Capture, Chinese Academy of Sciences, Shanghai200032, China
| | - Jia-Wei Wang
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- Key Laboratory of Plant Carbon Capture, Chinese Academy of Sciences, Shanghai200032, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai201210, China
- New Cornerstone Science Laboratory, Shanghai200032, China
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7
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Yang B, Pan F, Yasmeen F, Shan L, Pan J, Zhang M, Weng X, Wang M, Li M, Wang Q, Cheng K. Integrated multi-omic analysis reveals the cytokinin and sucrose metabolism-mediated regulation of flavone glycoside biosynthesis by MeJA exposure in Ficus pandurata Hance. Food Res Int 2023; 174:113680. [PMID: 37981372 DOI: 10.1016/j.foodres.2023.113680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/29/2023] [Accepted: 11/03/2023] [Indexed: 11/21/2023]
Abstract
Ficus pandurata Hance (FPH) holds a rich history as a traditional Chinese botanical remedy, utilized both as a culinary condiment and a medicinal intervention for diverse ailments. This study focuses on enhancing FPH's therapeutic potential by subjecting it to exogenous methyl jasmonate (MeJA) treatment, a strategy aimed at elevating the levels of active constituents to align with clinical and commercial requirements. Employing metabolomics, the impact of MeJA treatment on the lipid and flavonoid profiles of FPH leaves was investigated, revealing a marked increase in flavone glycosides, a subset of flavonoids. Investigation into the regulatory mechanism governing flavone glycoside biosynthesis uncovered elevated expression of structural genes associated with flavonoid production in response to MeJA exposure. Global endogenous hormone analysis pinpointed the selective activation of JA and cytokinin biosynthesis following MeJA treatment. Through a comprehensive integration of transcriptomic and metabolomic data, the cooperative stimulation of glucosyltransferase activity, alongside the JA and cytokinin signaling pathways, orchestrated by MeJA were explored. Furthermore, genes linked to sucrose metabolism exhibited heightened expression, concomitant with a noteworthy surge in antioxidant activity subsequent to MeJA treatment. These findings validate the augmentation of FPH leaf antioxidant capacity through MeJA intervention, while also offering profound insights into the regulatory role of MeJA in flavone glycoside biosynthesis, mediated by the interplay between cytokinin and sucrose metabolism pathways.
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Affiliation(s)
- Bingxian Yang
- Key Laboratory of Horticultural Plant Growth and Development, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; Chemical Biology Center, Lishui Institute of Agriculture and Forestry Sciences, Lishui 323000, China
| | - Fupeng Pan
- Chemical Biology Center, Lishui Institute of Agriculture and Forestry Sciences, Lishui 323000, China; Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou 311300, China
| | - Farhat Yasmeen
- Department of Biosciences, University of Wah, Wah Cantt 47040, Pakistan
| | - Luhuizi Shan
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Junjie Pan
- Chemical Biology Center, Lishui Institute of Agriculture and Forestry Sciences, Lishui 323000, China
| | - Meng Zhang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinying Weng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mengyu Wang
- Key Laboratory of Horticultural Plant Growth and Development, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Mengxin Li
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Qiaomei Wang
- Key Laboratory of Horticultural Plant Growth and Development, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China.
| | - Kejun Cheng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; Chemical Biology Center, Lishui Institute of Agriculture and Forestry Sciences, Lishui 323000, China; Zhejiang Provincial Key Laboratory of Resources Protection and Innovation of Traditional Chinese Medicine, Zhejiang A & F University, Hangzhou 311300, China.
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8
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Kurepa J, Smalle JA. Plant Hormone Modularity and the Survival-Reproduction Trade-Off. BIOLOGY 2023; 12:1143. [PMID: 37627027 PMCID: PMC10452219 DOI: 10.3390/biology12081143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/07/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
Biological modularity refers to the organization of living systems into separate functional units that interact in different combinations to promote individual well-being and species survival. Modularity provides a framework for generating and selecting variations that can lead to adaptive evolution. While the exact mechanisms underlying the evolution of modularity are still being explored, it is believed that the pressure of conflicting demands on limited resources is a primary selection force. One prominent example of conflicting demands is the trade-off between survival and reproduction. In this review, we explore the available evidence regarding the modularity of plant hormones within the context of the survival-reproduction trade-off. Our findings reveal that the cytokinin module is dedicated to maximizing reproduction, while the remaining hormone modules function to ensure reproduction. The signaling mechanisms of these hormone modules reflect their roles in this survival-reproduction trade-off. While the cytokinin response pathway exhibits a sequence of activation events that aligns with the developmental robustness expected from a hormone focused on reproduction, the remaining hormone modules employ double-negative signaling mechanisms, which reflects the necessity to prevent the excessive allocation of resources to survival.
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Affiliation(s)
| | - Jan A. Smalle
- Plant Physiology, Biochemistry, Molecular Biology Program, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA;
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Santoro DF, Puglisi I, Sicilia A, Baglieri A, La Bella E, Lo Piero AR. Transcriptomic profile of lettuce seedlings ( Lactuca sativa) response to microalgae extracts used as biostimulant agents. AOB PLANTS 2023; 15:plad043. [PMID: 37434759 PMCID: PMC10332502 DOI: 10.1093/aobpla/plad043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 07/02/2023] [Indexed: 07/13/2023]
Abstract
To reduce the use of chemical fertilizers and maximize agricultural yields, the use of microalgae extracts as biostimulants has recently attracted significant attention due to their favourable impact on both plant growth and their ability to induce tolerance towards environmental stressors. Lettuce (Lactuca sativa) is one of the most important fresh vegetables that often requires applications of chemical fertilizers to increase quality and productivity. Accordingly, the purpose of this study was to analyse the transcriptome reprogramming of lettuce (L. sativa) seedlings in response to either Chlorella vulgaris or Scenedesmus quadricauda extracts by applying an RNAseq approach. Differential gene expression analysis revealed that the core gene set that responded to microalgal treatments in a species-independent manner includes 1330 clusters, 1184 of which were down-regulated and 146 up-regulated, clearly suggesting that the repression of gene expression is the main effect of algal treatments. The deregulation of 7197 transcripts in the C. vulgaris treated seedlings compared to control samples (LsCv vs. LsCK) and 7118 transcripts in the S. quadricauda treated seedlings compared to control samples (LsSq vs. LsCK) were counted. Although the number of deregulated genes turned out to be similar between the algal treatments, the level of deregulation was higher in LsCv versus LsCK than in LsSq versus LsCK. In addition, 2439 deregulated transcripts were observed in the C. vulgaris treated seedlings compared to S. quadricauda treated samples (LsCv vs. LsSq comparison) suggesting that a specific transcriptomic profile was induced by the single algal extracts. 'Plant hormone signal transduction' category includes a very elevated number of DEGs, many of them specifically indicating that C. vulgaris actives both genes involved in the auxin biosynthesis and transduction pathways, whereas S. quadricauda up-regulates genes implicated in the cytokinin biosynthesis pathway. Finally, algal treatments induced the deregulation of genes encoding small hormone-like molecules that are known to act alone or by interacting with major plant hormones. In conclusion, this study offers the groundwork to draw up a list of putative gene targets with the aim of lettuce genetic improvement that will allow a limited or even null use of synthetic fertilizers and pesticides in the management of this crop.
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Affiliation(s)
- Danilo F Santoro
- Department of Agriculture, Food and Environment, University of Catania, via Santa Sofia 98, 95123 Catania, Italy
| | - Ivana Puglisi
- Department of Agriculture, Food and Environment, University of Catania, via Santa Sofia 98, 95123 Catania, Italy
| | - Angelo Sicilia
- Department of Agriculture, Food and Environment, University of Catania, via Santa Sofia 98, 95123 Catania, Italy
| | - Andrea Baglieri
- Department of Agriculture, Food and Environment, University of Catania, via Santa Sofia 98, 95123 Catania, Italy
| | - Emanuele La Bella
- Department of Agriculture, Food and Environment, University of Catania, via Santa Sofia 98, 95123 Catania, Italy
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10
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Bai Y, Cai M, Dou Y, Xie Y, Zheng H, Gao J. Phytohormone Crosstalk of Cytokinin Biosynthesis and Signaling Family Genes in Moso Bamboo ( Phyllostachys edulis). Int J Mol Sci 2023; 24:10863. [PMID: 37446040 DOI: 10.3390/ijms241310863] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/21/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Cytokinin is widely involved in the regulation of plant growth, but its pathway-related genes have not been reported in Moso bamboo. In this study, a total of 129 candidate sequences were identified by bioinformatic methods. These included 15 IPT family genes, 19 LOG family genes, 22 HK family genes, 11 HP family genes and 62 RR family genes. Phylogenetic analysis revealed that the cytokinin pathway was closely related to rice, and evolutionary pattern analysis found that most of the genes have syntenic relationship with rice-related genes. The Moso bamboo cytokinin pathway was evolutionarily conservative and mainly underwent purifying selection, and that gene family expansion was mainly due to whole-gene duplication events. Analysis of transcriptome data revealed a tissue-specific expression pattern of Moso bamboo cytokinin family genes, with auxin and gibberellin response patterns. Analysis of co-expression patterns at the developmental stages of Moso bamboo shoots revealed the existence of a phytohormone co-expression pattern centered on cytokinin signaling genes. The auxin signaling factor PheARF52 was identified by yeast one-hybrid assay as regulating the PheRR3 gene through a P-box element in the PheRR3 promoter region. Auxin and cytokinin signaling crosstalk to regulate Moso bamboo growth. Overall, we systematically identified and analyzed key gene families of the cytokinin pathway in Moso bamboo and obtained key factors for auxin and cytokinin crosstalk, laying the foundation for the study of hormone regulation in Moso bamboo.
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Affiliation(s)
- Yucong Bai
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Miaomiao Cai
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Yuping Dou
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Yali Xie
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Huifang Zheng
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Jian Gao
- Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, International Center for Bamboo and Rattan, Beijing 100102, China
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11
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Chen WQ, Liu DP, Li ZX, Chen K, Luo J, Xu JL. Transcriptome analysis of knockout mutants of rice seed dormancy gene OsVP1 and Sdr4. PLANT CELL REPORTS 2023; 42:309-319. [PMID: 36445461 DOI: 10.1007/s00299-022-02958-8] [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: 10/27/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
OsVP1 and Sdr4 play an important role in regulating seed dormancy that involved in multiple metabolism and regulatory pathways. Seed dormancy and germination are critical agricultural traits influencing rice grain yield. Although there are some genes have identified previously, the comprehensive understanding based on transcriptome is still deficient. In this study, we generated mutants of two representative regulators of seed germination, Oryza sativa Viviparous1 (OsVP1) and Seed dormancy 4 (Sdr4), by CRISPR/Cas9 approach and named them cr-osvp1 and cr-sdr4. The weakened dormancy of mutants indicated that the functions of OsVP1 and Sdr4 are required for normal early seed dormancy. There were 4157 and 8285 differentially expressed genes (DEGs) were identified in cr-osvp1 vs. NIP and cr-sdr4 vs. NIP groups, respectively, with a large number of overlapped DEGs between two groups. The gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis of common DEGs in two groups showed that genes related to carbohydrate metabolic, nucleoside metabolic, amylase activity and plant hormone signal transduction were involved in the dormancy regulation. These results suggest that OsVP1 and Sdr4 play an important role in regulating seed dormancy by multiple metabolism and regulatory pathways. The systematic analysis of the transcriptional level changes provides theoretical basis for the research of seed dormancy and germination in rice.
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Affiliation(s)
- Wen-Qiang Chen
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/College of Agriculture, Yangtze University, Jingzhou, 434025, Hubei, China
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Da-Pu Liu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhi-Xin Li
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/College of Agriculture, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Kai Chen
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, Guangdong, China
| | - Ju Luo
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
| | - Jian-Long Xu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, Guangdong, China.
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12
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Pi K, Huang Y, Luo W, Zeng S, Mo Z, Duan L, Liu R. Overdominant expression of genes plays a key role in root growth of tobacco hybrids. FRONTIERS IN PLANT SCIENCE 2023; 14:1107550. [PMID: 36798711 PMCID: PMC9927235 DOI: 10.3389/fpls.2023.1107550] [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: 11/25/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Heterosis has greatly improved the yield and quality of crops. However, previous studies often focused on improving the yield and quality of the shoot system, while research on the root system was neglected. We determined the root numbers of 12 F1 hybrids, all of which showed strong heterosis, indicating that tobacco F1 hybrids have general heterosis. To understand its molecular mechanism, we selected two hybrids with strong heterosis, GJ (G70 × Jiucaiping No.2) and KJ (K326 × Jiucaiping No.2), and their parents for transcriptome analysis. There were 84.22% and 90.25% of the differentially expressed genes were overdominantly expressed. The enrichment analysis of these overdominantly expressed genes showed that "Plant hormone signal transduction", "Phenylpropanoid biosynthesis", "MAPK signaling pathway - plant", and "Starch and sucrose metabolism" pathways were associated with root development. We focused on the analysis of the biosynthetic pathways of auxin(AUX), cytokinins(CTK), abscisic acid(ABA), ethylene(ET), and salicylic acid(SA), suggesting that overdominant expression of these hormone signaling pathway genes may enhance root development in hybrids. In addition, Nitab4.5_0011528g0020、Nitab4.5_0003282g0020、Nitab4.5_0004384g0070 may be the genes involved in root growth. Genome-wide comparative transcriptome analysis enhanced our understanding of the regulatory network of tobacco root development and provided new ideas for studying the molecular mechanisms of tobacco root development.
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Affiliation(s)
- Kai Pi
- College of Tobacco, Guizhou University, Guiyang, China
- Key Laboratory of Tobacco Quality in Guizhou Province, Guiyang, China
| | - Ying Huang
- College of Tobacco, Guizhou University, Guiyang, China
- Key Laboratory of Tobacco Quality in Guizhou Province, Guiyang, China
| | - Wen Luo
- College of Tobacco, Guizhou University, Guiyang, China
- Key Laboratory of Tobacco Quality in Guizhou Province, Guiyang, China
| | - Shuaibo Zeng
- College of Tobacco, Guizhou University, Guiyang, China
- Key Laboratory of Tobacco Quality in Guizhou Province, Guiyang, China
| | - Zejun Mo
- College of Agriculture, Guizhou University, Guiyang, China
| | - Lili Duan
- College of Agriculture, Guizhou University, Guiyang, China
| | - Renxiang Liu
- College of Tobacco, Guizhou University, Guiyang, China
- Key Laboratory of Tobacco Quality in Guizhou Province, Guiyang, China
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13
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Zhu M, Tao L, Zhang J, Liu R, Tian H, Hu C, Zhu Y, Li M, Wei Z, Yi J, Li J, Gou X. The type-B response regulators ARR10, ARR12, and ARR18 specify the central cell in Arabidopsis. THE PLANT CELL 2022; 34:4714-4737. [PMID: 36130292 PMCID: PMC9709988 DOI: 10.1093/plcell/koac285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/15/2022] [Indexed: 06/15/2023]
Abstract
In Arabidopsis thaliana, the female gametophyte consists of two synergid cells, an egg cell, a diploid central cell, and three antipodal cells. CYTOKININ INDEPENDENT 1 (CKI1), a histidine kinase constitutively activating the cytokinin signaling pathway, specifies the central cell and restricts the egg cell. However, the mechanism regulating CKI1-dependent central cell specification is largely unknown. Here, we showed that the type-B ARABIDOPSIS RESPONSE REGULATORS10, 12, and 18 (ARR10/12/18) localize at the chalazal pole of the female gametophyte. Phenotypic analysis showed that the arr10 12 18 triple mutant is female sterile. We examined the expression patterns of embryo sac marker genes and found that the embryo sac of arr10 12 18 plants had lost central cell identity, a phenotype similar to that of the Arabidopsis cki1 mutant. Genetic analyses demonstrated that ARR10/12/18, CKI1, and ARABIDOPSIS HISTIDINE PHOSPHOTRANSFER PROTEIN2, 3, and 5 (AHP2/3/5) function in a common pathway to regulate female gametophyte development. In addition, constitutively activated ARR10/12/18 in the cki1 embryo sac partially restored the fertility of cki1. Results of transcriptomic analysis supported the conclusion that ARR10/12/18 and CKI1 function together to regulate the identity of the central cell. Our results demonstrated that ARR10/12/18 function downstream of CKI1-AHP2/3/5 as core factors to determine cell fate of the female gametophyte.
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Affiliation(s)
- Mingsong Zhu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Liang Tao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jinghua Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Ruini Liu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hongai Tian
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Chong Hu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yafen Zhu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Meizhen Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhuoyun Wei
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jing Yi
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jia Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xiaoping Gou
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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14
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Zeng J, Yan X, Bai W, Zhang M, Chen Y, Li X, Hou L, Zhao J, Ding X, Liu R, Wang F, Ren H, Zhang J, Ding B, Liu H, Xiao Y, Pei Y. Carpel-specific down-regulation of GhCKXs in cotton significantly enhances seed and fiber yield. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6758-6772. [PMID: 35792654 PMCID: PMC9629787 DOI: 10.1093/jxb/erac303] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Cytokinin is considered to be an important driver of seed yield. To increase the yield of cotton while avoiding the negative consequences caused by constitutive overproduction of cytokinin, we down-regulated specifically the carpel genes for cytokinin oxidase/dehydrogenase (CKX), a key negative regulator of cytokinin levels, in transgenic cotton. The carpel-specific down-regulation of CKXs significantly enhanced cytokinin levels in the carpels. The elevated cytokinin promoted the expression of carpel- and ovule-development-associated genes, GhSTK2, GhAG1, and GhSHP, boosting ovule formation and thus producing more seeds in the ovary. Field experiments showed that the carpel-specific increase of cytokinin significantly increased both seed yield and fiber yield of cotton, without resulting in detrimental phenotypes. Our study details the regulatory mechanism of cytokinin signaling for seed development, and provides an effective and feasible strategy for yield improvement of seed crops.
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Affiliation(s)
- Jianyan Zeng
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Xingying Yan
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Wenqin Bai
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Mi Zhang
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Yang Chen
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Xianbi Li
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Lei Hou
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Juan Zhao
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Xiaoyan Ding
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Ruochen Liu
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Fanlong Wang
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Hui Ren
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Jingyi Zhang
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Bo Ding
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Haoru Liu
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
| | - Yuehua Xiao
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, P. R. China
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15
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He Q, Yuan R, Zhang T, An F, Wang N, Lan J, Wang X, Zhang Z, Pan Y, Wang X, Zhang J, Guo D, Qin G. Arabidopsis TIE1 and TIE2 transcriptional repressors dampen cytokinin response during root development. SCIENCE ADVANCES 2022; 8:eabn5057. [PMID: 36083905 PMCID: PMC9462699 DOI: 10.1126/sciadv.abn5057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Cytokinin plays critical roles in root development. Cytokinin signaling depends on activation of key transcription factors known as type B Arabidopsis response regulators (ARRs). However, the mechanisms underlying the finely tuned regulation of type B ARR activity remain unclear. In this study, we demonstrate that the ERF-associated amphiphilic repression (EAR) motif-containing protein TCP interactor containing ear motif protein2 (TIE2) forms a negative feedback loop to finely tune the activity of type B ARRs during root development. Disruption of TIE2 and its close homolog TIE1 causes severely shortened roots. TIE2 interacts with type B ARR1 and represses transcription of ARR1 targets. The cytokinin response is correspondingly enhanced in tie1-1 tie2-1. We further show that ARR1 positively regulates TIE1 and TIE2 by directly binding to their promoters. Our findings demonstrate that TIEs play key roles in controlling plant development and reveal an important negative feedback regulation mechanism for cytokinin signaling.
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16
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Genome-Wide Analysis of the Type-B Authentic Response Regulator Gene Family in Brassica napus. Genes (Basel) 2022; 13:genes13081449. [PMID: 36011360 PMCID: PMC9408017 DOI: 10.3390/genes13081449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/07/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
The type-B authentic response regulators (type-B ARRs) are positive regulators of cytokinin signaling and involved in plant growth and stress responses. In this study, we used bioinformatics, RNA-seq, and qPCR to study the phylogenetic and expression pattern of 35 type-B ARRs in Brassica napus. The BnARRs experienced gene expansion and loss during genome polyploidization and were classified into seven groups. Whole-genome duplication (WGD) and segmental duplication were the main forces driving type-B ARR expansion in B. napus. Several BnARRs with specific expression patterns during rapeseed development were identified, including BnARR12/14/18/23/33. Moreover, we found the type-B BnARRs were involved in rapeseed development and stress responses, through participating in cytokinin and ABA signaling pathways. This study revealed the origin, evolutionary history, and expression pattern of type-B ARRs in B. napus and will be helpful to the functional characterization of BnARRs.
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17
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Chen L, Jameson GB, Guo Y, Song J, Jameson PE. The LONELY GUY gene family: from mosses to wheat, the key to the formation of active cytokinins in plants. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:625-645. [PMID: 35108444 PMCID: PMC8989509 DOI: 10.1111/pbi.13783] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/06/2022] [Accepted: 01/13/2022] [Indexed: 05/19/2023]
Abstract
LONELY GUY (LOG) was first identified in a screen of rice mutants with defects in meristem maintenance. In plants, LOG codes for cytokinin riboside 5'-monophosphate phosphoribohydrolase, which converts inactive cytokinin nucleotides directly to the active free bases. Many enzymes with the PGGxGTxxE motif have been misannotated as lysine decarboxylases; conversely not all enzymes containing this motif are cytokinin-specific LOGs. As LOG mutants clearly impact yield in rice, we investigated the LOG gene family in bread wheat. By interrogating the wheat (Triticum aestivum) genome database, we show that wheat has multiple LOGs. The close alignment of TaLOG1, TaLOG2 and TaLOG6 with the X-ray structures of two functional Arabidopsis thaliana LOGs allows us to infer that the wheat LOGs 1-11 are functional LOGs. Using RNA-seq data sets, we assessed TaLOG expression across 70 tissue types, their responses to various stressors, the pattern of cis-regulatory elements (CREs) and intron/exon patterns. TaLOG gene family members are expressed variously across tissue types. When the TaLOG CREs are compared with those of the cytokinin dehydrogenases (CKX) and glucosyltransferases (CGT), there is close alignment of CREs between TaLOGs and TaCKXs reflecting the key role of CKX in maintaining cytokinin homeostasis. However, we suggest that the main homeostatic mechanism controlling cytokinin levels in response to biotic and abiotic challenge resides in the CGTs, rather than LOG or CKX. However, LOG transgenics and identified mutants in rice variously impact yield, providing interesting avenues for investigation in wheat.
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Affiliation(s)
- Lei Chen
- School of Life SciencesYantai UniversityYantaiChina
| | | | - Yichu Guo
- School of Life SciencesYantai UniversityYantaiChina
| | - Jiancheng Song
- School of Life SciencesYantai UniversityYantaiChina
- Yantai Jien Biological Science & Technology LtdYEDAYantaiChina
| | - Paula E. Jameson
- School of Life SciencesYantai UniversityYantaiChina
- School of Biological SciencesUniversity of CanterburyChristchurchNew Zealand
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18
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Trifunović-Momčilov M, Motyka V, Dobrev PI, Marković M, Milošević S, Jevremović S, Dragićević IČ, Subotić A. Phytohormone profiles in non-transformed and AtCKX transgenic centaury (Centaurium erythraea Rafn) shoots and roots in response to salinity stress in vitro. Sci Rep 2021; 11:21471. [PMID: 34728697 PMCID: PMC8563955 DOI: 10.1038/s41598-021-00866-7] [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: 01/26/2021] [Accepted: 10/05/2021] [Indexed: 11/09/2022] Open
Abstract
Plant hormones regulate numerous developmental and physiological processes. Abiotic stresses considerably affect production and distribution of phytohormones as the stress signal triggers. The homeostasis of plant hormones is controlled by their de novo synthesis and catabolism. The aim of this work was to analyse the contents of total and individual groups of endogenous cytokinins (CKs) as well as indole-3-acetic acid (IAA) in AtCKX overexpressing centaury plants grown in vitro on graded NaCl concentrations (0, 50, 100, 150, 200 mM). The levels of endogenous stress hormones including abscisic acid (ABA), salicylic acid (SA) and jasmonic acid (JA) were also detected. The elevated contents of total CKs were found in all analysed centaury shoots. Furthermore, increased amounts of all five CK groups, as well as enhanced total CKs were revealed on graded NaCl concentrations in non-transformed and AtCKX roots. All analysed AtCKX centaury lines exhibited decreased amounts of endogenous IAA in shoots and roots. Consequently, the IAA/bioactive CK forms ratios showed a significant variation in the shoots and roots of all AtCKX lines. In shoots and roots of both non-transformed and AtCKX transgenic centaury plants, salinity was associated with an increase of ABA and JA and a decrease of SA content.
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Affiliation(s)
- Milana Trifunović-Momčilov
- Department for Plant Physiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, 11060, Serbia.
| | - Václav Motyka
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 16502, Prague 6, Czech Republic
| | - Petre I Dobrev
- Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 16502, Prague 6, Czech Republic
| | - Marija Marković
- Department for Plant Physiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, 11060, Serbia
| | - Snežana Milošević
- Department for Plant Physiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, 11060, Serbia
| | - Slađana Jevremović
- Department for Plant Physiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, 11060, Serbia
| | - Ivana Č Dragićević
- Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia
| | - Angelina Subotić
- Department for Plant Physiology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade, 11060, Serbia
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Overdominance at the Gene Expression Level Plays a Critical Role in the Hybrid Root Growth of Brassica napus. Int J Mol Sci 2021; 22:ijms22179246. [PMID: 34502153 PMCID: PMC8431428 DOI: 10.3390/ijms22179246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 01/12/2023] Open
Abstract
Despite heterosis contributing to genetic improvements in crops, root growth heterosis in rapeseed plants is poorly understood at the molecular level. The current study was performed to discover key differentially expressed genes (DEGs) related to heterosis in two hybrids with contrasting root growth performance (FO; high hybrid and FV; low hybrid) based on analysis of the root heterosis effect. Based on comparative transcriptomic analysis, we believe that the overdominance at the gene expression level plays a critical role in hybrid roots’ early biomass heterosis. Our findings imply that a considerable increase in up-regulation of gene expression underpins heterosis. In the FO hybrid, high expression of DEGs overdominant in the starch/sucrose and galactose metabolic pathways revealed a link between hybrid vigor and root growth. DEGs linked to auxin, cytokinin, brassinosteroids, ethylene, and abscisic acid were also specified, showing that these hormones may enhance mechanisms of root growth and the development in the FO hybrid. Moreover, transcription factors such as MYB, ERF, bHLH, NAC, bZIP, and WRKY are thought to control downstream genes involved in root growth. Overall, this is the first study to provide a better understanding related to the regulation of the molecular mechanism of heterosis, which assists in rapeseed growth and yield improvement.
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Leuendorf JE, Schmülling T. Meeting at the DNA: Specifying Cytokinin Responses through Transcription Factor Complex Formation. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10071458. [PMID: 34371661 PMCID: PMC8309282 DOI: 10.3390/plants10071458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 05/10/2023]
Abstract
Cytokinin is a plant hormone regulating numerous biological processes. Its diverse functions are realized through the expression control of specific target genes. The transcription of the immediate early cytokinin target genes is regulated by type-B response regulator proteins (RRBs), which are transcription factors (TFs) of the Myb family. RRB activity is controlled by phosphorylation and protein degradation. Here, we focus on another step of regulation, the interaction of RRBs among each other or with other TFs to form active or repressive TF complexes. Several examples in Arabidopsis thaliana illustrate that RRBs form homodimers or complexes with other TFs to specify the cytokinin response. This increases the variability of the output response and provides opportunities of crosstalk between the cytokinin signaling pathway and other cellular signaling pathways. We propose that a targeted approach is required to uncover the full extent and impact of RRB interaction with other TFs.
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21
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Zhou Y, Underhill SJR. Differential transcription pathways associated with rootstock-induced dwarfing in breadfruit (Artocarpus altilis) scions. BMC PLANT BIOLOGY 2021; 21:261. [PMID: 34090350 PMCID: PMC8178858 DOI: 10.1186/s12870-021-03013-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/26/2021] [Indexed: 05/07/2023]
Abstract
BACKGROUND Breadfruit (Artocarpus altilis) is a traditional staple tree crop throughout the tropics. Through interspecific grafting, a dwarf phenotype with over 50% reduction in plant height was identified when marang (Artocarpus odoratissimus) rootstocks were used. However, the molecular mechanism underlying the rootstock-induced breadfruit dwarfing is poorly understood. RESULTS An RNA-sequencing study of breadfruit scions at 22 months after grafting identified 5409 differentially expressed genes (DEGs) of which 2069 were upregulated and 3339 were downregulated in scion stems on marang rootstocks compared to those on self-graft. The DEGs were predominantly enriched for biological processes involved in carbon metabolism, cell wall organization, plant hormone signal transduction and redox homeostasis. The down-regulation of genes encoding vacuolar acid invertases and alkaline/neutral invertases, was consistent with the decreased activity of both enzymes, accompanying with a higher sucrose but lower glucose and fructose levels in the tissues. Key genes of biosynthetic pathways for amino acids, lipids and cell wall were down regulated, reflecting reduction of sucrose utilisation for stem growth on dwarfing rootstocks. Genes encoding sugar transporters, amino acid transporters, choline transporters, along with large number of potassium channels and aquaporin family members were down-regulated in scion stems on marang rootstocks. Lower activity of plasma membrane H+-ATPase, together with the predominance of genes encoding expansins, wall-associated receptor kinases and key enzymes for biosynthesis and re-modelling of cellulose, xyloglucans and pectins in down-regulated DGEs suggested impairment of cell expansion. Signalling pathways of auxin and gibberellin, along with strigolacton and brassinosteroid biosynthetic genes dominated the down-regulated DEGs. Phenylpropanoid pathway was enriched, with key lignin biosynthetic genes down-regulated, and flavonoid biosynthetic genes upregulated in scions on marang rootstocks. Signalling pathways of salicylic acid, jasmonic acid, ethylene and MAPK cascade were significantly enriched in the upregulated DEGs. CONCLUSIONS Rootstock-induced disruption in pathways regulating nutrient transport, sucrose utilisation, cell wall biosynthesis and networks of hormone transduction are proposed to impair cell expansion and stem elongation, leading to dwarf phenotype in breadfruit scions. The information provides opportunity to develop screening strategy for rootstock breeding and selection for breadfruit dwarfing.
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Affiliation(s)
- Yuchan Zhou
- Australian Centre for Pacific Islands Research, University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia.
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Steven J R Underhill
- Australian Centre for Pacific Islands Research, University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, QLD, 4072, Australia
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22
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Chen L, Zhao J, Song J, Jameson PE. Cytokinin glucosyl transferases, key regulators of cytokinin homeostasis, have potential value for wheat improvement. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:878-896. [PMID: 33811433 PMCID: PMC8131048 DOI: 10.1111/pbi.13595] [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: 12/18/2020] [Accepted: 03/28/2021] [Indexed: 05/05/2023]
Abstract
The cytokinins, which are N6 -substituted adenine derivatives, control key aspects of crop productivity. Cytokinin levels are controlled via biosynthesis by isopentenyl transferase (IPT), destruction by cytokinin oxidase/dehydrogenase (CKX), and inactivation via glucosylation by cytokinin glucosyl transferases (CGTs). While both yield components and tolerance to drought and related abiotic stressors have been positively addressed via manipulation of IPT and/or CKX expression, much less attention has been paid to the CGTs. As naming of the CGTs has been unclear, we suggest COGT, CNGT, CONGT and CNOGT to describe the O-, N- and dual function CGTs. As specific CGT mutants of both rice and arabidopsis showed impacts on yield components, we interrogated the wheat genome database, IWGSC RefSeq v1.0 & v2.0, to investigate wheat CGTs. Besides providing unambiguous names for the 53 wheat CGTs, we show their expression patterns in 70 developmental tissues and their response characteristics to various stress conditions by reviewing more than 1000 RNA-seq data sets. These revealed various patterns of responses and showed expression generally being more limited in reproductive tissues than in vegetative tissues. Multiple cis-regulatory elements are present in the 3 kb upstream of the start codons of the 53 CGTs. Elements associated with abscisic acid, light and methyl jasmonate are particularly over-represented, indicative of the responsiveness of CGTs to the environment. These data sets indicate that CGTs have potential value for wheat improvement and that these could be targeted in TILLING or gene editing wheat breeding programmes.
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Affiliation(s)
- Lei Chen
- School of Life SciencesYantai UniversityYantaiChina
| | - Jing Zhao
- School of Life SciencesYantai UniversityYantaiChina
| | | | - Paula E. Jameson
- School of Life SciencesYantai UniversityYantaiChina
- School of Biological SciencesUniversity of CanterburyChristchurchNew Zealand
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23
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Sirko A, Wawrzyńska A, Brzywczy J, Sieńko M. Control of ABA Signaling and Crosstalk with Other Hormones by the Selective Degradation of Pathway Components. Int J Mol Sci 2021; 22:4638. [PMID: 33924944 PMCID: PMC8125534 DOI: 10.3390/ijms22094638] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 12/13/2022] Open
Abstract
A rapid and appropriate genetic and metabolic acclimation, which is crucial for plants' survival in a changing environment, is maintained due to the coordinated action of plant hormones and cellular degradation mechanisms influencing proteostasis. The plant hormone abscisic acid (ABA) rapidly accumulates in plants in response to environmental stress and plays a pivotal role in the reaction to various stimuli. Increasing evidence demonstrates a significant role of autophagy in controlling ABA signaling. This field has been extensively investigated and new discoveries are constantly being provided. We present updated information on the components of the ABA signaling pathway, particularly on transcription factors modified by different E3 ligases. Then, we focus on the role of selective autophagy in ABA pathway control and review novel evidence on the involvement of autophagy in different parts of the ABA signaling pathway that are important for crosstalk with other hormones, particularly cytokinins and brassinosteroids.
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Affiliation(s)
- Agnieszka Sirko
- Laboratory of Plant Protein Homeostasis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5A, 02-106 Warsaw, Poland; (J.B.); (M.S.)
| | - Anna Wawrzyńska
- Laboratory of Plant Protein Homeostasis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5A, 02-106 Warsaw, Poland; (J.B.); (M.S.)
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24
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Mohanty B. Promoter Architecture and Transcriptional Regulation of Genes Upregulated in Germination and Coleoptile Elongation of Diverse Rice Genotypes Tolerant to Submergence. Front Genet 2021; 12:639654. [PMID: 33796132 PMCID: PMC8008075 DOI: 10.3389/fgene.2021.639654] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/08/2021] [Indexed: 12/24/2022] Open
Abstract
Rice has the natural morphological adaptation to germinate and elongate its coleoptile under submerged flooding conditions. The phenotypic deviation associated with the tolerance to submergence at the germination stage could be due to natural variation. However, the molecular basis of this variation is still largely unknown. A comprehensive understanding of gene regulation of different genotypes that have diverse rates of coleoptile elongation can provide significant insights into improved rice varieties. To do so, publicly available transcriptome data of five rice genotypes, which have different lengths of coleoptile elongation under submergence tolerance, were analyzed. The aim was to identify the correlation between promoter architecture, associated with transcriptional and hormonal regulation, in diverse genotype groups of rice that have different rates of coleoptile elongation. This was achieved by identifying the putative cis-elements present in the promoter sequences of genes upregulated in each group of genotypes (tolerant, highly tolerant, and extremely tolerant genotypes). Promoter analysis identified transcription factors (TFs) that are common and unique to each group of genotypes. The candidate TFs that are common in all genotypes are MYB, bZIP, AP2/ERF, ARF, WRKY, ZnF, MADS-box, NAC, AS2, DOF, E2F, ARR-B, and HSF. However, the highly tolerant genotypes interestingly possess binding sites associated with HY5 (bZIP), GBF3, GBF4 and GBF5 (bZIP), DPBF-3 (bZIP), ABF2, ABI5, bHLH, and BES/BZR, in addition to the common TFs. Besides, the extremely tolerant genotypes possess binding sites associated with bHLH TFs such as BEE2, BIM1, BIM3, BM8 and BAM8, and ABF1, in addition to the TFs identified in the tolerant and highly tolerant genotypes. The transcriptional regulation of these TFs could be linked to phenotypic variation in coleoptile elongation in response to submergence tolerance. Moreover, the results indicate a cross-talk between the key TFs and phytohormones such as gibberellic acid, abscisic acid, ethylene, auxin, jasmonic acid, and brassinosteroids, for an altered transcriptional regulation leading to differences in germination and coleoptile elongation under submergence. The information derived from the current in silico analysis can potentially assist in developing new rice breeding targets for direct seeding.
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Affiliation(s)
- Bijayalaxmi Mohanty
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
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25
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Hnatuszko-Konka K, Gerszberg A, Weremczuk-Jeżyna I, Grzegorczyk-Karolak I. Cytokinin Signaling and De Novo Shoot Organogenesis. Genes (Basel) 2021; 12:265. [PMID: 33673064 PMCID: PMC7917986 DOI: 10.3390/genes12020265] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 11/16/2022] Open
Abstract
The ability to restore or replace injured tissues can be undoubtedly named among the most spectacular achievements of plant organisms. One of such regeneration pathways is organogenesis, the formation of individual organs from nonmeristematic tissue sections. The process can be triggered in vitro by incubation on medium supplemented with phytohormones. Cytokinins are a class of phytohormones demonstrating pleiotropic effects and a powerful network of molecular interactions. The present study reviews existing knowledge on the possible sequence of molecular and genetic events behind de novo shoot organogenesis initiated by cytokinins. Overall, the review aims to collect reactions encompassed by cytokinin primary responses, starting from phytohormone perception by the dedicated receptors, to transcriptional reprogramming of cell fate by the last module of multistep-phosphorelays. It also includes a brief reminder of other control mechanisms, such as epigenetic reprogramming.
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Affiliation(s)
- Katarzyna Hnatuszko-Konka
- Department of Molecular Biotechnology and Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland;
| | - Aneta Gerszberg
- Department of Molecular Biotechnology and Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland;
| | - Izabela Weremczuk-Jeżyna
- Department of Biology and Pharmaceutical Botany, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland; (I.W.-J.); (I.G.-K.)
| | - Izabela Grzegorczyk-Karolak
- Department of Biology and Pharmaceutical Botany, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland; (I.W.-J.); (I.G.-K.)
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Veselova SV, Nuzhnaya TV, Burkhanova GF, Rumyantsev SD, Khusnutdinova EK, Maksimov IV. Ethylene-Cytokinin Interaction Determines Early Defense Response of Wheat against Stagonospora nodorum Berk. Biomolecules 2021; 11:174. [PMID: 33525389 PMCID: PMC7911247 DOI: 10.3390/biom11020174] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 01/08/2023] Open
Abstract
Ethylene, salicylic acid (SA), and jasmonic acid are the key phytohormones involved in plant immunity, and other plant hormones have been demonstrated to interact with them. The classic phytohormone cytokinins are important participants of plant defense signaling. Crosstalk between ethylene and cytokinins has not been sufficiently studied as an aspect of plant immunity and is addressed in the present research. We compared expression of the genes responsible for hormonal metabolism and signaling in wheat cultivars differing in resistance to Stagonospora nodorum in response to their infection with fungal isolates, whose virulence depends on the presence of the necrotrophic effector SnTox3. Furthermore, we studied the action of the exogenous cytokinins, ethephon (2-chloroethylphosphonic acid, ethylene-releasing agent) and 1-methylcyclopropene (1-MCP, inhibitor of ethylene action) on infected plants. Wheat susceptibility was shown to develop due to suppression of reactive oxygen species production and decreased content of active cytokinins brought about by SnTox3-mediated activation of the ethylene signaling pathway. SnTox3 decreased cytokinin content most quickly by its activated glucosylation in an ethylene-dependent manner and, furthermore, by oxidative degradation and inhibition of biosynthesis in ethylene-dependent and ethylene-independent manners. Exogenous zeatin application enhanced wheat resistance against S. nodorum through inhibition of the ethylene signaling pathway and upregulation of SA-dependent genes. Thus, ethylene inhibited triggering of SA-dependent resistance mechanism, at least in part, by suppression of the cytokinin signaling pathway.
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Affiliation(s)
- Svetlana V. Veselova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
| | - Tatyana V. Nuzhnaya
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Guzel F. Burkhanova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
| | - Sergey D. Rumyantsev
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
| | - Elza K. Khusnutdinova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
| | - Igor V. Maksimov
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre, Russian Academy of Sciences, Prospekt Oktyabrya, 71, 450054 Ufa, Russia; (T.V.N.); (G.F.B.); (S.D.R.); (E.K.K.); (I.V.M.)
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27
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Steiner E, Israeli A, Gupta R, Shwartz I, Nir I, Leibman-Markus M, Tal L, Farber M, Amsalem Z, Ori N, Müller B, Bar M. Characterization of the cytokinin sensor TCSv2 in arabidopsis and tomato. PLANT METHODS 2020; 16:152. [PMID: 33292327 PMCID: PMC7670716 DOI: 10.1186/s13007-020-00694-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/04/2020] [Indexed: 05/09/2023]
Abstract
BACKGROUND Hormones are crucial to plant life and development. Being able to follow the plants hormonal response to various stimuli and throughout developmental processes is an important and increasingly widespread tool. The phytohormone cytokinin (CK) has crucial roles in the regulation of plant growth and development. RESULTS Here we describe a version of the CK sensor Two Component signaling Sensor (TCS), referred to as TCSv2. TCSv2 has a different arrangement of binding motifs when compared to previous TCS versions, resulting in increased sensitivity in some examined tissues. Here, we examine the CK responsiveness and distribution pattern of TCSv2 in arabidopsis and tomato. CONCLUSIONS The increased sensitivity and reported expression pattern of TCSv2 make it an ideal TCS version to study CK response in particular hosts, such as tomato, and particular tissues, such as leaves and flowers.
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Affiliation(s)
- Evyatar Steiner
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Alon Israeli
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Rupali Gupta
- Department of Plant Pathology and Weed Research, Plant Protection Institute, Agricultural Research Organization, The Volcani Center, 7505101, Rishon LeZion, Israel
| | - Ido Shwartz
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Ido Nir
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
- Department of Biology, Stanford University, Stanford, CA, 94305, USA
| | - Meirav Leibman-Markus
- Department of Plant Pathology and Weed Research, Plant Protection Institute, Agricultural Research Organization, The Volcani Center, 7505101, Rishon LeZion, Israel
| | - Lior Tal
- Department of Plant and Environmental Science, Weizmann Institute of Science, 7610001, Rehovot, Israel
- Department of Plant Biology, University of California - Davis, Davis, CA, 95616, USA
| | - Mika Farber
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Ziva Amsalem
- Department of Plant and Environmental Science, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Naomi Ori
- Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Bruno Müller
- Leibniz-Institut Für Pflanzengenetik Und Kulturpflanzenforschung (IPK), Corrensstraße 3, 06466, Seeland, Germany
- Microsynth AG, Schützenstrasse 15, 9436, Balgach, Switzerland
| | - Maya Bar
- Department of Plant Pathology and Weed Research, Plant Protection Institute, Agricultural Research Organization, The Volcani Center, 7505101, Rishon LeZion, Israel.
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28
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Kundariya H, Yang X, Morton K, Sanchez R, Axtell MJ, Hutton SF, Fromm M, Mackenzie SA. MSH1-induced heritable enhanced growth vigor through grafting is associated with the RdDM pathway in plants. Nat Commun 2020; 11:5343. [PMID: 33093443 PMCID: PMC7582163 DOI: 10.1038/s41467-020-19140-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/24/2020] [Indexed: 12/20/2022] Open
Abstract
Plants transmit signals long distances, as evidenced in grafting experiments that create distinct rootstock-scion junctions. Noncoding small RNA is a signaling molecule that is graft transmissible, participating in RNA-directed DNA methylation; but the meiotic transmissibility of graft-mediated epigenetic changes remains unclear. Here, we exploit the MSH1 system in Arabidopsis and tomato to introduce rootstock epigenetic variation to grafting experiments. Introducing mutations dcl2, dcl3 and dcl4 to the msh1 rootstock disrupts siRNA production and reveals RdDM targets of methylation repatterning. Progeny from grafting experiments show enhanced growth vigor relative to controls. This heritable enhancement-through-grafting phenotype is RdDM-dependent, involving 1380 differentially methylated genes, many within auxin-related gene pathways. Growth vigor is associated with robust root growth of msh1 graft progeny, a phenotype associated with auxin transport based on inhibitor assays. Large-scale field experiments show msh1 grafting effects on tomato plant performance, heritable over five generations, demonstrating the agricultural potential of epigenetic variation. The meiotic transmissibility and progeny phenotypic influence of graft-mediated epigenetic changes remain unclear. Here, the authors use the msh1 mutant in the rootstock to trigger heritable enhanced growth vigor in Arabidopsis and tomato, and show it is associated with the RNA-directed DNA methylation pathway.
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Affiliation(s)
- Hardik Kundariya
- Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE, USA.,Department of Biology, The Pennsylvania State University, University Park, PA, USA
| | - Xiaodong Yang
- Department of Biology, The Pennsylvania State University, University Park, PA, USA
| | - Kyla Morton
- EpiCrop Technologies, Inc., Lincoln, NE, USA
| | - Robersy Sanchez
- Department of Biology, The Pennsylvania State University, University Park, PA, USA
| | - Michael J Axtell
- Department of Biology, The Pennsylvania State University, University Park, PA, USA
| | - Samuel F Hutton
- Gulf Coast Research and Education Center, IFAS, University of Florida, Wimauma, FL, USA
| | | | - Sally A Mackenzie
- Departments of Biology and Plant Science, The Pennsylvania State University, University Park, PA, USA.
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29
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Research Progress on the Roles of Cytokinin in Plant Response to Stress. Int J Mol Sci 2020; 21:ijms21186574. [PMID: 32911801 PMCID: PMC7555750 DOI: 10.3390/ijms21186574] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 01/05/2023] Open
Abstract
Cytokinins promote plant growth and development under normal plant growth conditions and also play an important role in plant resistance to stress. Understanding the working mechanisms of cytokinins under adverse conditions will help to make full use of cytokinins in agriculture to increase production and efficiency of land use. In this article, we review the progress that has been made in cytokinin research in plant response to stress and propose its future application prospects.
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30
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Huo R, Liu Z, Yu X, Li Z. The Interaction Network and Signaling Specificity of Two-Component System in Arabidopsis. Int J Mol Sci 2020; 21:ijms21144898. [PMID: 32664520 PMCID: PMC7402358 DOI: 10.3390/ijms21144898] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 01/25/2023] Open
Abstract
Two-component systems (TCS) in plants have evolved into a more complicated multi-step phosphorelay (MSP) pathway, which employs histidine kinases (HKs), histidine-containing phosphotransfer proteins (HPts), and response regulators (RRs) to regulate various aspects of plant growth and development. How plants perceive the external signals, then integrate and transduce the secondary signals specifically to the desired destination, is a fundamental characteristic of the MSP signaling network. The TCS elements involved in the MSP pathway and molecular mechanisms of signal transduction have been best understood in the model plant Arabidopsis thaliana. In this review, we focus on updated knowledge on TCS signal transduction in Arabidopsis. We first present a brief description of the TCS elements; then, the protein–protein interaction network is established. Finally, we discuss the possible molecular mechanisms involved in the specificity of the MSP signaling at the mRNA and protein levels.
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Affiliation(s)
- Ruxue Huo
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics & Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China;
- College of Agriculture and Forestry Sciences, Linyi University, Linyi 276000, China
| | - Zhenning Liu
- College of Agriculture and Forestry Sciences, Linyi University, Linyi 276000, China
- Correspondence: (Z.L.); (Z.L.)
| | - Xiaolin Yu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China;
| | - Zongyun Li
- Institute of Integrative Plant Biology, Jiangsu Key Laboratory of Phylogenomics & Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China;
- Correspondence: (Z.L.); (Z.L.)
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Laila R, Robin AHK, Park JI, Saha G, Kim HT, Kayum MA, Nou IS. Expression and Role of Response Regulating, Biosynthetic and Degrading Genes for Cytokinin Signaling during Clubroot Disease Development. Int J Mol Sci 2020; 21:ijms21113896. [PMID: 32486099 PMCID: PMC7312684 DOI: 10.3390/ijms21113896] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/19/2020] [Accepted: 05/26/2020] [Indexed: 01/29/2023] Open
Abstract
The obligate biotroph Plasmodiophora brassicae causes clubroot disease in oilseeds and vegetables of the Brassicaceae family, and cytokinins play a vital role in clubroot formation. In this study, we examined the expression patterns of 17 cytokinin-related genes involved in the biosynthesis, signaling, and degradation in Chinese cabbage inoculated with the Korean pathotype group 4 isolate of P. brassicae, Seosan. This isolate produced the most severe clubroot symptoms in Chinese cabbage cultivar “Bullam-3-ho” compared to three other Korean geographical isolates investigated. BrIPT1, a cytokinin biosynthesis gene, was induced on Day 1 and Day 28 in infected root tissues and the upregulation of this biosynthetic gene coincided with the higher expression of the response regulators BrRR1, on both Days and BrRR6 on Day 1 and 3. BrRR3 and 4 genes were also induced during gall enlargement on Day 35 in leaf tissues. The BrRR4 gene, which positively interact with phytochrome B, was consistently induced in leaf tissues on Day 1, 3, and 14 in the inoculated plants. The cytokinin degrading gene BrCKX3-6 were induced on Day 14, before gall initiation. BrCKX2,3,6 were induced until Day 28 and their expression was downregulated on Day 35. This insight improves our current understanding of the role of cytokinin signaling genes in clubroot disease development.
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Affiliation(s)
- Rawnak Laila
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
| | - Arif Hasan Khan Robin
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
- Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Jong-In Park
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
| | - Gopal Saha
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
- Department of Agronomy, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Hoy-Taek Kim
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
| | - Md. Abdul Kayum
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
- Department of Agricultural Botany, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Ill-Sup Nou
- Department of Horticulture, Sunchon National University, Suncheon 57922, Korea; (R.L.); (A.H.K.R.); (J.-I.P.); (G.S.); (H.-T.K.); (M.A.K.)
- Correspondence: ; Tel.: +82-617-503-249
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Semeradova H, Montesinos JC, Benkova E. All Roads Lead to Auxin: Post-translational Regulation of Auxin Transport by Multiple Hormonal Pathways. PLANT COMMUNICATIONS 2020; 1:100048. [PMID: 33367243 PMCID: PMC7747973 DOI: 10.1016/j.xplc.2020.100048] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/26/2020] [Accepted: 04/18/2020] [Indexed: 05/03/2023]
Abstract
Auxin is a key hormonal regulator, that governs plant growth and development in concert with other hormonal pathways. The unique feature of auxin is its polar, cell-to-cell transport that leads to the formation of local auxin maxima and gradients, which coordinate initiation and patterning of plant organs. The molecular machinery mediating polar auxin transport is one of the important points of interaction with other hormones. Multiple hormonal pathways converge at the regulation of auxin transport and form a regulatory network that integrates various developmental and environmental inputs to steer plant development. In this review, we discuss recent advances in understanding the mechanisms that underlie regulation of polar auxin transport by multiple hormonal pathways. Specifically, we focus on the post-translational mechanisms that contribute to fine-tuning of the abundance and polarity of auxin transporters at the plasma membrane and thereby enable rapid modification of the auxin flow to coordinate plant growth and development.
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Affiliation(s)
- Hana Semeradova
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
| | | | - Eva Benkova
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
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