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Li Z, Huang Y, Shen Z, Wu M, Huang M, Hong SB, Xu L, Zang Y. Advances in functional studies of plant MYC transcription factors. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:195. [PMID: 39103657 DOI: 10.1007/s00122-024-04697-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 07/17/2024] [Indexed: 08/07/2024]
Abstract
Myelocytomatosis (MYC) transcription factors (TFs) belong to the basic helix-loop-helix (bHLH) family in plants and play a central role in governing a wide range of physiological processes. These processes encompass plant growth, development, adaptation to biotic and abiotic stresses, as well as secondary metabolism. In recent decades, significant strides have been made in comprehending the multifaceted regulatory functions of MYCs. This advancement has been achieved through the cloning of MYCs and the characterization of plants with MYC deficiencies or overexpression, employing comprehensive genome-wide 'omics' and protein-protein interaction technologies. MYCs act as pivotal components in integrating signals from various phytohormones' transcriptional regulators to orchestrate genome-wide transcriptional reprogramming. In this review, we have compiled current research on the role of MYCs as molecular switches that modulate signal transduction pathways mediated by phytohormones and phytochromes. This comprehensive overview allows us to address lingering questions regarding the interplay of signals in response to environmental cues and developmental shift. It also sheds light on the potential implications for enhancing plant resistance to diverse biotic and abiotic stresses through genetic improvements achieved by plant breeding and synthetic biology efforts.
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Affiliation(s)
- Zewei Li
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Yunshuai Huang
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Zhiwei Shen
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Meifang Wu
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Mujun Huang
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China
| | - Seung-Beom Hong
- Department of Biotechnology, University of Houston Clear Lake, Houston, TX, 77058-1098, USA
| | - Liai Xu
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China.
| | - Yunxiang Zang
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China.
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Guan Y, Zhang Q, Li M, Zhai J, Wu S, Ahmad S, Lan S, Peng D, Liu ZJ. Genome-Wide Identification and Expression Pattern Analysis of TIFY Family Genes Reveal Their Potential Roles in Phalaenopsis aphrodite Flower Opening. Int J Mol Sci 2024; 25:5422. [PMID: 38791460 PMCID: PMC11121579 DOI: 10.3390/ijms25105422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
The TIFY gene family (formerly known as the zinc finger proteins expressed in inflorescence meristem (ZIM) family) not only functions in plant defense responses but also are widely involved in regulating plant growth and development. However, the identification and functional analysis of TIFY proteins remain unexplored in Orchidaceae. Here, we identified 19 putative TIFY genes in the Phalaenopsis aphrodite genome. The phylogenetic tree classified them into four subfamilies: 14 members from JAZ, 3 members from ZML, and 1 each from PPD and TIFY. Sequence analysis revealed that all Phalaenopsis TIFY proteins contained a TIFY domain. Exon-intron analysis showed that the intron number and length of Phalaenopsis TIFY genes varied, whereas the same subfamily and subgroup genes had similar exon or intron numbers and distributions. The most abundant cis-elements in the promoter regions of the 19 TIFY genes were associated with light responsiveness, followed by MeJA and ABA, indicating their potential regulation by light and phytohormones. The 13 candidate TIFY genes screened from the transcriptome data exhibited two types of expression trends, suggesting their different roles in cell proliferation and cell expansion of floral organ growth during Phalaenopsis flower opening. Overall, this study serves as a background for investigating the underlying roles of TIFY genes in floral organ growth in Phalaenopsis.
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Affiliation(s)
| | | | | | | | | | | | | | - Donghui Peng
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Shangxiadian Road No. 15, Cangshan District, Fuzhou 350002, China; (Y.G.); (Q.Z.); (M.L.); (J.Z.); (S.W.); (S.A.); (S.L.)
| | - Zhong-Jian Liu
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Shangxiadian Road No. 15, Cangshan District, Fuzhou 350002, China; (Y.G.); (Q.Z.); (M.L.); (J.Z.); (S.W.); (S.A.); (S.L.)
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Fang Y, Guo D, Wang Y, Wang N, Fang X, Zhang Y, Li X, Chen L, Yu D, Zhang B, Qin G. Rice transcriptional repressor OsTIE1 controls anther dehiscence and male sterility by regulating JA biosynthesis. THE PLANT CELL 2024; 36:1697-1717. [PMID: 38299434 PMCID: PMC11062430 DOI: 10.1093/plcell/koae028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/12/2023] [Accepted: 12/24/2023] [Indexed: 02/02/2024]
Abstract
Proper anther dehiscence is essential for successful pollination and reproduction in angiosperms, and jasmonic acid (JA) is crucial for the process. However, the mechanisms underlying the tight regulation of JA biosynthesis during anther development remain largely unknown. Here, we demonstrate that the rice (Oryza sativa L.) ethylene-response factor-associated amphiphilic repression (EAR) motif-containing protein TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTORS (TCP) INTERACTOR CONTAINING EAR MOTIF PROTEIN1 (OsTIE1) tightly regulates JA biosynthesis by repressing TCP transcription factor OsTCP1/PCF5 during anther development. The loss of OsTIE1 function in Ostie1 mutants causes male sterility. The Ostie1 mutants display inviable pollen, early stamen filament elongation, and precocious anther dehiscence. In addition, JA biosynthesis is activated earlier and JA abundance is precociously increased in Ostie1 anthers. OsTIE1 is expressed during anther development, and OsTIE1 is localized in nuclei and has transcriptional repression activity. OsTIE1 directly interacts with OsTCP1, and overexpression of OsTCP1 caused early anther dehiscence resembling that of Ostie1. JA biosynthesis genes including rice LIPOXYGENASE are regulated by the OsTIE1-OsTCP1 complex. Our findings reveal that the OsTIE1-OsTCP1 module plays a critical role in anther development by finely tuning JA biosynthesis and provide a foundation for the generation of male sterile plants for hybrid seed production.
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Affiliation(s)
- Yuxing Fang
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China
| | - Dongshu Guo
- Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing, 210014, China
| | - Yi Wang
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China
| | - Ning Wang
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China
| | - Xianwen Fang
- Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yunhui Zhang
- Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xiao Li
- Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing, 210014, China
| | - Letian Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Diqiu Yu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming 650091, China
- Southwest United Graduate School, Kunming 650092, China
| | - Baolong Zhang
- Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Zhongshan Biological Breeding Laboratory, Nanjing, 210014, China
| | - Genji Qin
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China
- Southwest United Graduate School, Kunming 650092, China
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Xiang X, Deng Q, Zheng Y, He Y, Ji D, Vejlupkova Z, Fowler JE, Zhou L. Genome-wide investigation of the LARP gene family: focus on functional identification and transcriptome profiling of ZmLARP6c1 in maize pollen. BMC PLANT BIOLOGY 2024; 24:348. [PMID: 38684961 PMCID: PMC11057080 DOI: 10.1186/s12870-024-05054-z] [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: 01/12/2024] [Accepted: 04/19/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND The La-related proteins (LARPs) are a superfamily of RNA-binding proteins associated with regulation of gene expression. Evidence points to an important role for post-transcriptional control of gene expression in germinating pollen tubes, which could be aided by RNA-binding proteins. RESULTS In this study, a genome-wide investigation of the LARP proteins in eight plant species was performed. The LARP proteins were classified into three families based on a phylogenetic analysis. The gene structure, conserved motifs, cis-acting elements in the promoter, and gene expression profiles were investigated to provide a comprehensive overview of the evolutionary history and potential functions of ZmLARP genes in maize. Moreover, ZmLARP6c1 was specifically expressed in pollen and ZmLARP6c1 was localized to the nucleus and cytoplasm in maize protoplasts. Overexpression of ZmLARP6c1 enhanced the percentage pollen germination compared with that of wild-type pollen. In addition, transcriptome profiling analysis revealed that differentially expressed genes included PABP homologous genes and genes involved in jasmonic acid and abscisic acid biosynthesis, metabolism, signaling pathways and response in a Zmlarp6c1::Ds mutant and ZmLARP6c1-overexpression line compared with the corresponding wild type. CONCLUSIONS The findings provide a basis for further evolutionary and functional analyses, and provide insight into the critical regulatory function of ZmLARP6c1 in maize pollen germination.
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Affiliation(s)
- Xiaoqin Xiang
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China
| | - Qianxia Deng
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China
| | - Yi Zheng
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China
| | - Yi He
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China
| | - Dongpu Ji
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China
| | - Zuzana Vejlupkova
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, 97331, USA
| | - John E Fowler
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, 97331, USA
| | - Lian Zhou
- College of Agronomy and Biotechnology, Maize Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China.
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Li X, Li C, Shi L, Lv G, Li X, Liu Y, Jia X, Liu J, Chen Y, Zhu L, Fu Y. Jasmonate signaling pathway confers salt tolerance through a NUCLEAR FACTOR-Y trimeric transcription factor complex in Arabidopsis. Cell Rep 2024; 43:113825. [PMID: 38386555 DOI: 10.1016/j.celrep.2024.113825] [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: 07/28/2023] [Revised: 01/02/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
Jasmonate (JA) is a well-known phytohormone essential for plant response to biotic stress. Recently, a crucial role of JA signaling in salt resistance has been highlighted; however, the specific regulatory mechanism remains largely unknown. In this study, we found that the NUCLEAR FACTOR-Y (NF-Y) subunits NF-YA1, NF-YB2, and NF-YC9 form a trimeric complex that positively regulates the expression of salinity-responsive genes, whereas JASMONATE-ZIM DOMAIN protein 8 (JAZ8) directly interacts with three subunits and acts as the key repressor to suppress both the assembly of the NF-YA1-YB2-YC9 trimeric complex and the transcriptional activation activity of the complex. When plants encounter high salinity, JA levels are elevated and perceived by the CORONATINE INSENSITIVE (COI) 1 receptor, leading to the degradation of JAZ8 via the 26S proteasome pathway, thereby releasing the activity of the NF-YA1-YB2-YC9 complex, initiating the activation of salinity-responsive genes, such as MYB75, and thus enhancing the salinity tolerance of plants.
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Affiliation(s)
- Xing Li
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Changjiang Li
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China.
| | - Lei Shi
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Gaofeng Lv
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Xi Li
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Yixuan Liu
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Xiaojie Jia
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Jiyuan Liu
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Yuqian Chen
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Lei Zhu
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China
| | - Ying Fu
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China.
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Wei Y, Li A, Zhao Y, Li W, Dong Z, Zhang L, Zhu Y, Zhang H, Gao Y, Zhang Q. Time-Course Transcriptomic Analysis Reveals Molecular Insights into the Inflorescence and Flower Development of Cardiocrinum giganteum. PLANTS (BASEL, SWITZERLAND) 2024; 13:649. [PMID: 38475495 DOI: 10.3390/plants13050649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024]
Abstract
Cardiocrinum giganteum is an endemic species of east Asia which is famous for its showy inflorescence and medicinal bulbs. Its inflorescence is a determinate raceme and the flowers bloom synchronously. Morphological observation and time-course transcriptomic analysis were combined to study the process of inflorescence and flower development of C. giganteum. The results show that the autonomic pathway, GA pathway, and the vernalization pathway are involved in the flower formation pathway of C. giganteum. A varied ABCDE flowering model was deduced from the main development process. Moreover, it was found that the flowers in different parts of the raceme in C. giganteum gradually synchronized during development, which is highly important for both evolution and ecology. The results obtained in this work improve our understanding of the process and mechanism of inflorescence and flower development and could be useful for the flowering period regulation and breeding of C. giganteum.
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Affiliation(s)
- Yu Wei
- Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Aihua Li
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Yiran Zhao
- Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Wenqi Li
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Zhiyang Dong
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Lei Zhang
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Yuntao Zhu
- Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Hui Zhang
- Key Laboratory of National Forestry and Grassland Administration on Plant Ex Situ Conservation, Beijing Botanical Garden, Beijing 100093, China
| | - Yike Gao
- Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Qixiang Zhang
- Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
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Wang H, Ren J, Zhou S, Duan Y, Zhu C, Chen C, Liu Z, Zheng Q, Xiang S, Xie Z, Wang X, Chai L, Ye J, Xu Q, Guo W, Deng X, Zhang F. Molecular regulation of oil gland development and biosynthesis of essential oils in Citrus spp. Science 2024; 383:659-666. [PMID: 38330135 DOI: 10.1126/science.adl2953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/29/2023] [Indexed: 02/10/2024]
Abstract
Secretory structures in terrestrial plants serve as reservoirs for a variety of secondary metabolites. Among these, the secretory cavity of the Rutaceae family is notable for containing essential oils with a wide range of applications. However, the molecular basis underlying secretory cavity development is unknown. Here, we reveal a molecular framework for Citrus oil gland formation. Using genetic mapping and genome editing, we demonstrated that this process requires LATE MERISTEM IDENTITY1 (LMI1), a key regulator of leaf serration. A conserved GCC box element of the LMI1 promoter recruits DORNROSCHEN-like (DRNL) for transcriptional activation. This DRNL-LMI1 cascade triggers MYC5 activation, facilitating the development of oil glands and the biosynthesis of essential oils. Our findings spotlight cis-regulatory divergence within leaf shape genes, propelling novel functional tissue formation.
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Affiliation(s)
- Hongxing Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Jie Ren
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Shiyun Zhou
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Yaoyuan Duan
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Chenqiao Zhu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Chuanwu Chen
- Guangxi Key Laboratory of Germplasm Innovation and Utilization of Specialty Commercial Crops in North Guangxi, Guangxi Academy of Specialty Crops, Guilin 541004, China
| | - Ziyan Liu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Qingyou Zheng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Shu Xiang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Zongzhou Xie
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Xia Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Lijun Chai
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Junli Ye
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiang Xu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Wenwu Guo
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Xiuxin Deng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Fei Zhang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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Gautam R, Shukla P, Kirti PB. Male sterility in plants: an overview of advancements from natural CMS to genetically manipulated systems for hybrid seed production. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:195. [PMID: 37606708 DOI: 10.1007/s00122-023-04444-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/07/2023] [Indexed: 08/23/2023]
Abstract
KEY MESSAGE The male sterility system in plants has traditionally been utilized for hybrid seed production. In last three decades, genetic manipulation for male sterility has revolutionized this area of research related to hybrid seed production technology. Here, we have surveyed some of the natural cytoplasmic male sterility (CMS) systems that existed/ were developed in different crop plants for developing male sterility-fertility restoration systems used in hybrid seed production and highlighted some of the recent biotechnological advancements in the development of genetically engineered systems that occurred in this area. We have indicated the possible future directions toward the development of engineered male sterility systems. Cytoplasmic male sterility (CMS) is an important trait that is naturally prevalent in many plant species, which has been used in the development of hybrid varieties. This is associated with the use of appropriate genes for fertility restoration provided by the restorer line that restores fertility on the corresponding CMS line. The development of hybrids based on a CMS system has been demonstrated in several different crops. However, there are examples of species, which do not have usable cytoplasmic male sterility and fertility restoration systems (Cytoplasmic Genetic Male Sterility Systems-CGMS) for hybrid variety development. In such plants, it is necessary to develop usable male sterile lines through genetic engineering with the use of heterologous expression of suitable genes that control the development of male gametophyte and fertile male gamete formation. They can also be developed through gene editing using the recently developed CRISPR-Cas technology to knock out suitable genes that are responsible for the development of male gametes. The present review aims at providing an insight into the development of various technologies for successful production of hybrid varieties and is intended to provide only essential information on male sterility systems starting from naturally occurring ones to the genetically engineered systems obtained through different means.
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Affiliation(s)
- Ranjana Gautam
- Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University, Kanpur, Uttar Pradesh, 208024, India
| | - Pawan Shukla
- Seri-Biotech Research Laboratory, Central Silk Board, Carmelram Post, Kodathi, Bangalore, 560035, India.
| | - P B Kirti
- Agri Biotech Foundation, PJTS Agricultural University Campus, Rajendranagar, Hyderabad, Telangana, 500030, India
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9
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Israeli A, Schubert R, Man N, Teboul N, Serrani Yarce JC, Rosowski EE, Wu MF, Levy M, Efroni I, Ljung K, Hause B, Reed JW, Ori N. Modulating auxin response stabilizes tomato fruit set. PLANT PHYSIOLOGY 2023; 192:2336-2355. [PMID: 37032117 PMCID: PMC10315294 DOI: 10.1093/plphys/kiad205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 06/01/2023]
Abstract
Fruit formation depends on successful fertilization and is highly sensitive to weather fluctuations that affect pollination. Auxin promotes fruit initiation and growth following fertilization. Class A auxin response factors (Class A ARFs) repress transcription in the absence of auxin and activate transcription in its presence. Here, we explore how multiple members of the ARF family regulate fruit set and fruit growth in tomato (Solanum lycopersicum) and Arabidopsis thaliana, and test whether reduction of SlARF activity improves yield stability in fluctuating temperatures. We found that several tomato Slarf mutant combinations produced seedless parthenocarpic fruits, most notably mutants deficient in SlARF8A and SlARF8B genes. Arabidopsis Atarf8 mutants deficient in the orthologous gene had less complete parthenocarpy than did tomato Slarf8a Slarf8b mutants. Conversely, Atarf6 Atarf8 double mutants had reduced fruit growth after fertilization. AtARF6 and AtARF8 likely switch from repression to activation of fruit growth in response to a fertilization-induced auxin increase in gynoecia. Tomato plants with reduced SlARF8A and SlARF8B gene dosage had substantially higher yield than the wild type under controlled or ambient hot and cold growth conditions. In field trials, partial reduction in the SlARF8 dose increased yield under extreme temperature with minimal pleiotropic effects. The stable yield of the mutant plants resulted from a combination of early onset of fruit set, more fruit-bearing branches and more flowers setting fruits. Thus, ARF8 proteins mediate the control of fruit set, and relieving this control with Slarf8 mutations may be utilized in breeding to increase yield stability in tomato and other crops.
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Affiliation(s)
- Alon Israeli
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
| | - Ramona Schubert
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, Halle 06120, Germany
| | - Nave Man
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
| | - Naama Teboul
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
| | | | - Emily E Rosowski
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Miin-Feng Wu
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Matan Levy
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
| | - Idan Efroni
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
| | - Karin Ljung
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå 901 83, Sweden
| | - Bettina Hause
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, Halle 06120, Germany
| | - Jason W Reed
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Naomi Ori
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University, PO Box 12, Rehovot 76100, Israel
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Li S, Hu Y, Yang H, Tian S, Wei D, Tang Q, Yang Y, Wang Z. The Regulatory Roles of MYC TFs in Plant Stamen Development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 333:111734. [PMID: 37207819 DOI: 10.1016/j.plantsci.2023.111734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/21/2023]
Abstract
The stamen, as the male reproductive organ of flowering plants, plays a critical role in completing the life cycle of plants. MYC transcription factors are members of the bHLH IIIE subgroup and participate in a number of plant biological processes. In recent decades, a number of studies have confirmed that MYC transcription factors actively participate in the regulation of stamen development and have a critical impact on plant fertility. In this review, we summarized how MYC transcription factors play a role in regulating secondary thickening of the anther endothecium, the development and degradation of the tapetum, stomatal differentiation, and the dehydration of the anther epidermis. With regard to anther physiological metabolism, MYC transcription factors control dehydrin synthesis, ion and water transport, and carbohydrate metabolism to influence pollen viability. Additionally, MYCs participate in the JA signal transduction pathway, where they directly or indirectly control the development of stamens through the ET-JA, GA-JA, and ABA-JA pathways. By identifying the functions of MYCs during plant stamen development, it will help us to obtain a more comprehensive understanding not only on the molecular functions of this TF family but also the mechanisms underlying stamen development.
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Affiliation(s)
- Sirui Li
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
| | - Yao Hu
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
| | - Huiqing Yang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
| | - Shibing Tian
- The Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing 400055, China.
| | - Dayong Wei
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
| | - Qinglin Tang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
| | - Yang Yang
- The Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing 400055, China.
| | - Zhimin Wang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Olericulture, Chongqing, 400715, China.
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11
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Caperta AD, Fernandes I, Conceição SIR, Marques I, Róis AS, Paulo OS. Ovule Transcriptome Analysis Discloses Deregulation of Genes and Pathways in Sexual and Apomictic Limonium Species (Plumbaginaceae). Genes (Basel) 2023; 14:genes14040901. [PMID: 37107659 PMCID: PMC10137852 DOI: 10.3390/genes14040901] [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: 03/17/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
The genus Limonium Mill. (sea lavenders) includes species with sexual and apomixis reproductive strategies, although the genes involved in these processes are unknown. To explore the mechanisms beyond these reproduction modes, transcriptome profiling of sexual, male sterile, and facultative apomictic species was carried out using ovules from different developmental stages. In total, 15,166 unigenes were found to be differentially expressed with apomictic vs. sexual reproduction, of which 4275 were uniquely annotated using an Arabidopsis thaliana database, with different regulations according to each stage and/or species compared. Gene ontology (GO) enrichment analysis indicated that genes related to tubulin, actin, the ubiquitin degradation process, reactive oxygen species scavenging, hormone signaling such as the ethylene signaling pathway and gibberellic acid-dependent signal, and transcription factors were found among differentially expressed genes (DEGs) between apomictic and sexual plants. We found that 24% of uniquely annotated DEGs were likely to be implicated in flower development, male sterility, pollen formation, pollen-stigma interactions, and pollen tube formation. The present study identifies candidate genes that are highly associated with distinct reproductive modes and sheds light on the molecular mechanisms of apomixis expression in Limonium sp.
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Affiliation(s)
- Ana D Caperta
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Isabel Fernandes
- cE3c-Centre for Ecology, Evolution and Environmental Changes, CHANGE-Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Sofia I R Conceição
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- LASIGE Computer Science and Engineering Research Centre, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Isabel Marques
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- Forest Research Centre (CEF), Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Ana S Róis
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- School of Psychology and Life Sciences, Universidade Lusófona de Humanidades e Tecnologias (ULHT), Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Octávio S Paulo
- cE3c-Centre for Ecology, Evolution and Environmental Changes, CHANGE-Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
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12
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Czerniawski P, Piślewska-Bednarek M, Piasecka A, Kułak K, Bednarek P. Loss of MYB34 Transcription Factor Supports the Backward Evolution of Indole Glucosinolate Biosynthesis in a Subclade of the Camelineae Tribe and Releases the Feedback Loop in This Pathway in Arabidopsis. PLANT & CELL PHYSIOLOGY 2023; 64:80-93. [PMID: 36222356 DOI: 10.1093/pcp/pcac142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/12/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Glucosinolates are specialized defensive metabolites characteristic of the Brassicales order. Among them, aliphatic and indolic glucosinolates (IGs) are usually highly abundant in species from the Brassicaceae family. The exceptions this trend are species representing a subclade of the Camelineae tribe, including Capsella and Camelina genera, which have reduced capacity to produce and metabolize IGs. Our study addresses the contribution of specific glucosinolate-related myeloblastosis (MYB) transcription factors to this unprecedented backward evolution of IG biosynthesis. To this end, we performed phylogenomic and functional studies of respective MYB proteins. The obtained results revealed weakened conservation of glucosinolate-related MYB transcription factors, including loss of functional MYB34 protein, in the investigated species. We showed that the introduction of functional MYB34 from Arabidopsis thaliana partially restores IG biosynthesis in Capsella rubella, indicating that the loss of this transcription factor contributes to the backward evolution of this metabolic pathway. Finally, we performed an analysis of the impact of particular myb mutations on the feedback loop in IG biosynthesis, which drives auxin overproduction, metabolic dysregulation and strong growth retardation caused by mutations in IG biosynthetic genes. This uncovered the unique function of MYB34 among IG-related MYBs in this feedback regulation and consequently in IG conservation in Brassicaceae plants.
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Affiliation(s)
- Paweł Czerniawski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, Poznań 61-704, Poland
| | - Mariola Piślewska-Bednarek
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, Poznań 61-704, Poland
| | - Anna Piasecka
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, Poznań 61-704, Poland
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, Poznań 60-479, Poland
| | - Karolina Kułak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, Poznań 61-704, Poland
- Department of General Botany, Institute of Experimental Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, Poznań 61-614, Poland
| | - Paweł Bednarek
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, Poznań 61-704, Poland
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13
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Genome-wide analysis of JAZ family genes expression patterns during fig (Ficus carica L.) fruit development and in response to hormone treatment. BMC Genomics 2022; 23:170. [PMID: 35236292 PMCID: PMC8889711 DOI: 10.1186/s12864-022-08420-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 02/25/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Jasmonate-ZIM domain (JAZ) repressors negatively regulate signal transduction of jasmonates, which regulate plant development and immunity. However, no comprehensive analysis of the JAZ gene family members has been done in the common fig (Ficus carica L.) during fruit development and hormonal treatment. RESULTS In this study, 10 non-redundant fig JAZ family genes (FcJAZs) distributed on 7 chromosomes were identified in the fig genome. Phylogenetic and structural analysis showed that FcJAZ genes can be grouped into 5 classes. All the classes contained relatively complete TIFY and Jas domains. Yeast two hybrid (Y2H) results showed that all FcJAZs proteins may interact with the identified transcription factor, FcMYC2. Tissue-specific expression analysis showed that FcJAZs were highly expressed in the female flowers and roots. Expression patterns of FcJAZs during the fruit development were analyzed by RNA-Seq and qRT-PCR. The findings showed that, most FcJAZs were significantly downregulated from stage 3 to 5 in the female flower, whereas downregulation of these genes was observed in the fruit peel from stage 4 to 5. Weighted-gene co-expression network analysis (WGCNA) showed the expression pattern of FcJAZs was correlated with hormone signal transduction and plant-pathogen interaction. Putative cis-elements analysis of FcJAZs and expression patterns of FcJAZs which respond to hormone treatments revealed that FcJAZs may regulate fig fruit development by modulating the effect of ethylene or gibberellin. CONCLUSIONS This study provides a comprehensive analysis of the FcJAZ family members and provides information on FcJAZs contributions and their role in regulating the common fig fruit development.
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14
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Shrestha K, Huang Y. Genome-wide characterization of the sorghum JAZ gene family and their responses to phytohormone treatments and aphid infestation. Sci Rep 2022; 12:3238. [PMID: 35217668 PMCID: PMC8881510 DOI: 10.1038/s41598-022-07181-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/04/2022] [Indexed: 11/18/2022] Open
Abstract
Jasmonate ZIM-domain (JAZ) proteins are the key repressors of the jasmonic acid (JA) signal transduction pathway and play a crucial role in stress-related defense, phytohormone crosstalk and modulation of the growth-defense tradeoff. In this study, the sorghum genome was analyzed through genome-wide comparison and domain scan analysis, which led to the identification of 18 sorghum JAZ (SbJAZ) genes. All SbJAZ proteins possess the conserved TIFY and Jas domains and they formed a phylogenetic tree with five clusters related to the orthologs of other plant species. Similarly, evolutionary analysis indicated the duplication events as a major force of expansion of the SbJAZ genes and there was strong neutral and purifying selection going on. In silico analysis of the promoter region of the SbJAZ genes indicates that SbJAZ5, SbJAZ6, SbJAZ13, SbJAZ16 and SbJAZ17 are rich in stress-related cis-elements. In addition, expression profiling of the SbJAZ genes in response to phytohormones treatment (JA, ET, ABA, GA) and sugarcane aphid (SCA) was performed in two recombinant inbred lines (RILs) of sorghum, resistant (RIL 521) and susceptible (RIL 609) to SCA. Taken together, data generated from phytohormone expression and in silico analysis suggests the putative role of SbJAZ9 in JA-ABA crosstalk and SbJAZ16 in JA-ABA and JA-GA crosstalk to regulate certain physiological processes. Notably, upregulation of SbJAZ1, SbJAZ5, SbJAZ13 and SbJAZ16 in resistant RIL during JA treatment and SCA infestation suggests putative functions in stress-related defense and to balance the plant defense to promote growth. Overall, this report provides valuable insight into the organization and functional characterization of the sorghum JAZ gene family.
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Affiliation(s)
- Kumar Shrestha
- Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Yinghua Huang
- Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, OK, 74078, USA. .,Plant Science Research Laboratory, United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Stillwater, OK, 74075, USA.
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15
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Cao L, Tian J, Liu Y, Chen X, Li S, Persson S, Lu D, Chen M, Luo Z, Zhang D, Yuan Z. Ectopic expression of OsJAZ6, which interacts with OsJAZ1, alters JA signaling and spikelet development in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:1083-1096. [PMID: 34538009 DOI: 10.1111/tpj.15496] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
Jasmonates (JAs) are key phytohormones that regulate plant responses and development. JASMONATE-ZIM DOMAIN (JAZ) proteins safeguard JA signaling by repressing JA-responsive gene expression in the absence of JA. However, the interaction and cooperative roles of JAZ repressors remain unclear during plant development. Here, we found that OsJAZ6 interacts with OsJAZ1 depending on a single amino acid in the so-called ZIM domain of OsJAZ6 in rice JA signaling transduction and JA-regulated rice spikelet development. In vivo protein distribution analysis revealed that the OsJAZ6 content is efficiently regulated during spikelet development, and biochemical and genetic evidence showed that OsJAZ6 is more sensitive to JA-mediated degradation than OsJAZ1. Through over- and mis-expression experiments, we further showed that the protein stability and levels of OsJAZ6 orchestrate the output of JA signaling during rice spikelet development. A possible mechanism, which outlines how OsJAZ repressors interact and function synergistically in specifying JA signaling output through degradation titration, is also discussed.
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Affiliation(s)
- Lichun Cao
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jiaqi Tian
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yilin Liu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaofei Chen
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Siqi Li
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Staffan Persson
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department for Plant and Environmental Sciences, University of Copenhagen, 1871, Frederiksberg C, Denmark
- Copenhagen Plant Science Center, University of Copenhagen, 1871, Frederiksberg C, Denmark
| | - Dan Lu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Mingjiao Chen
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhijing Luo
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
| | - Zheng Yuan
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
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Jasmonates and Plant Salt Stress: Molecular Players, Physiological Effects, and Improving Tolerance by Using Genome-Associated Tools. Int J Mol Sci 2021; 22:ijms22063082. [PMID: 33802953 PMCID: PMC8002660 DOI: 10.3390/ijms22063082] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 12/18/2022] Open
Abstract
Soil salinity is one of the most limiting stresses for crop productivity and quality worldwide. In this sense, jasmonates (JAs) have emerged as phytohormones that play essential roles in mediating plant response to abiotic stresses, including salt stress. Here, we reviewed the mechanisms underlying the activation and response of the JA-biosynthesis and JA-signaling pathways under saline conditions in Arabidopsis and several crops. In this sense, molecular components of JA-signaling such as MYC2 transcription factor and JASMONATE ZIM-DOMAIN (JAZ) repressors are key players for the JA-associated response. Moreover, we review the antagonist and synergistic effects between JA and other hormones such as abscisic acid (ABA). From an applied point of view, several reports have shown that exogenous JA applications increase the antioxidant response in plants to alleviate salt stress. Finally, we discuss the latest advances in genomic techniques for the improvement of crop tolerance to salt stress with a focus on jasmonates.
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Mitreiter S, Gigolashvili T. Regulation of glucosinolate biosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:70-91. [PMID: 33313802 DOI: 10.1093/jxb/eraa479] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 05/18/2023]
Abstract
Glucosinolates are secondary defense metabolites produced by plants of the order Brassicales, which includes the model species Arabidopsis and many crop species. In the past 13 years, the regulation of glucosinolate synthesis in plants has been intensively studied, with recent research revealing complex molecular mechanisms that connect glucosinolate production with responses to other central pathways. In this review, we discuss how the regulation of glucosinolate biosynthesis is ecologically relevant for plants, how it is controlled by transcription factors, and how this transcriptional machinery interacts with hormonal, environmental, and epigenetic mechanisms. We present the central players in glucosinolate regulation, MYB and basic helix-loop-helix transcription factors, as well as the plant hormone jasmonate, which together with other hormones and environmental signals allow the coordinated and rapid regulation of glucosinolate genes. Furthermore, we highlight the regulatory connections between glucosinolates, auxin, and sulfur metabolism and discuss emerging insights and open questions on the regulation of glucosinolate biosynthesis.
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Affiliation(s)
- Simon Mitreiter
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - Tamara Gigolashvili
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
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18
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Arias T, Riaño‐Pachón DM, Di Stilio VS. Genomic and transcriptomic resources for candidate gene discovery in the Ranunculids. APPLICATIONS IN PLANT SCIENCES 2021; 9:e11407. [PMID: 33552749 PMCID: PMC7845765 DOI: 10.1002/aps3.11407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
PREMISE Multiple transitions from insect to wind pollination are associated with polyploidy and unisexual flowers in Thalictrum (Ranunculaceae), yet the underlying genetics remains unknown. We generated a draft genome of Thalictrum thalictroides, a representative of a clade with ancestral floral traits (diploid, hermaphrodite, and insect pollinated) and a model for functional studies. Floral transcriptomes of T. thalictroides and of wind-pollinated, andromonoecious T. hernandezii are presented as a resource to facilitate candidate gene discovery in flowers with different sexual and pollination systems. METHODS A draft genome of T. thalictroides and two floral transcriptomes of T. thalictroides and T. hernandezii were obtained from HiSeq 2000 Illumina sequencing and de novo assembly. RESULTS The T. thalictroides de novo draft genome assembly consisted of 44,860 contigs (N50 = 12,761 bp, 243 Mbp total length) and contained 84.5% conserved embryophyte single-copy genes. Floral transcriptomes contained representatives of most eukaryotic core genes, and most of their genes formed orthogroups. DISCUSSION To validate the utility of these resources, potential candidate genes were identified for the different floral morphologies using stepwise data set comparisons. Single-copy gene analysis and simple sequence repeat markers were also generated as a resource for population-level and phylogenetic studies.
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Affiliation(s)
- Tatiana Arias
- School of Biological SciencesThe University of Hong KongPokfulamHong Kong
- Department of BiologyUniversity of Washington, SeattleWashington98195‐1800USA
- Present address:
Tecnológico de AntioquiaCalle 78B No. 72A220MedellínColombia
| | - Diego Mauricio Riaño‐Pachón
- Laboratory of Computational, Evolutionary and Systems BiologyCenter for Nuclear Energy in AgricultureUniversity of São PauloPiracicabaSão Paulo13416‐000Brazil
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Yuan S, Li Z, Yuan N, Hu Q, Zhou M, Zhao J, Li D, Luo H. MiR396 is involved in plant response to vernalization and flower development in Agrostis stolonifera. HORTICULTURE RESEARCH 2020; 7:173. [PMID: 33328434 PMCID: PMC7603517 DOI: 10.1038/s41438-020-00394-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 08/23/2020] [Accepted: 08/30/2020] [Indexed: 05/05/2023]
Abstract
MicroRNA396 (miR396) has been demonstrated to regulate flower development by targeting growth-regulating factors (GRFs) in annual species. However, its role in perennial grasses and its potential involvement in flowering time control remain unexplored. Here we report that overexpression of miR396 in a perennial species, creeping bentgrass (Agrostis stolonifera L.), alters flower development. Most significantly, transgenic (TG) plants bypass the vernalization requirement for flowering. Gene expression analysis reveals that miR396 is induced by long-day (LD) photoperiod and vernalization. Further study identifies VRN1, VRN2, and VRN3 homologs whose expression patterns in wild-type (WT) plants are similar to those observed in wheat and barley during transition from short-day (SD) to LD, and SD to cold conditions. However, compared to WT controls, TG plants overexpressing miR396 exhibit significantly enhanced VRN1 and VRN3 expression, but repressed VRN2 expression under SD to LD conditions without vernalization, which might be associated with modified expression of methyltransferase genes. Collectively, our results unveil a potentially novel mechanism by which miR396 suppresses the vernalization requirement for flowering which might be related to the epigenetic regulation of VRN genes and provide important new insight into critical roles of a miRNA in regulating vernalization-mediated transition from vegetative to reproductive growth in monocots.
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Affiliation(s)
- Shuangrong Yuan
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Zhigang Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Ning Yuan
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Qian Hu
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Man Zhou
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Junming Zhao
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
- Department of Grassland Science, Sichuan Agricultural University, 611130, Chengdu, Sichuan, China
| | - Dayong Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
- Beijing Vegetable Research Center, Beijing Academy of Agriculture and forestry Science, 100097, Beijing, China
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA.
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20
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Genome-wide and expression pattern analysis of JAZ family involved in stress responses and postharvest processing treatments in Camellia sinensis. Sci Rep 2020; 10:2792. [PMID: 32066857 PMCID: PMC7026426 DOI: 10.1038/s41598-020-59675-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/03/2020] [Indexed: 12/22/2022] Open
Abstract
The JASMONATE-ZIM DOMAIN (JAZ) family genes are key repressors in the jasmonic acid signal transduction pathway. Recently, the JAZ gene family has been systematically characterized in many plants. However, this gene family has not been explored in the tea plant. In this study, 13 CsJAZ genes were identified in the tea plant genome. Phylogenetic analysis showed that the JAZ proteins from tea and other plants clustered into 11 sub-groups. The CsJAZ gene transcriptional regulatory network predictive and expression pattern analyses suggest that these genes play vital roles in abiotic stress responses, phytohormone crosstalk and growth and development of the tea plant. In addition, the CsJAZ gene expression profiles were associated with tea postharvest processing. Our work provides a comprehensive understanding of the CsJAZ family and will help elucidate their contributions to tea quality during tea postharvest processing.
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21
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Huang H, Gong Y, Liu B, Wu D, Zhang M, Xie D, Song S. The DELLA proteins interact with MYB21 and MYB24 to regulate filament elongation in Arabidopsis. BMC PLANT BIOLOGY 2020; 20:64. [PMID: 32033528 PMCID: PMC7006197 DOI: 10.1186/s12870-020-2274-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 02/03/2020] [Indexed: 05/24/2023]
Abstract
BACKGROUND Gibberellin (GA) and jasmonate (JA) are two essential phytohormones for filament elongation in Arabidopsis. GA and JA trigger degradation of DELLAs and JASMONATE ZIM-domain (JAZ) proteins through SCFSLY1 and SCFCOI1 separately to activate filament elongation. In JA pathway, JAZs interact with MYB21 and MYB24 to control filament elongation. However, little is known how DELLAs regulate filament elongation. RESULTS Here we showed that DELLAs interact with MYB21 and MYB24, and that R2R3 domains of MYB21 and MYB24 are responsible for interaction with DELLAs. Furthermore, we demonstrated that DELLA and JAZ proteins coordinately repress the transcriptional function of MYB21 and MYB24 to inhibit filament elongation. CONCLUSION We discovered that DELLAs interact with MYB21 and MYB24, and that DELLAs and JAZs attenuate the transcriptional function of MYB21 and MYB24 to control filament elongation. This study reveals a novel cross-talk mechanism of GA and JA in the regulation of filament elongation in Arabidopsis.
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Affiliation(s)
- Huang Huang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, 102206, China.
| | - Yilong Gong
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Dewei Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Min Zhang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Daoxin Xie
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China.
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22
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Li C, Shi L, Wang Y, Li W, Chen B, Zhu L, Fu Y. Arabidopsis ECAP Is a New Adaptor Protein that Connects JAZ Repressors with the TPR2 Co-repressor to Suppress Jasmonate-Responsive Anthocyanin Accumulation. MOLECULAR PLANT 2020; 13:246-265. [PMID: 31706031 DOI: 10.1016/j.molp.2019.10.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 10/24/2019] [Accepted: 10/30/2019] [Indexed: 05/27/2023]
Abstract
Suppression mechanisms mediated by transcriptional repressors commonly exist in diverse phytohormone signaling pathways. In Arabidopsis thaliana, JASMONATE-ZIM DOMAIN (JAZ) proteins are transcriptional repressors that function as negative regulators of diverse JA responses. Novel Interactor of JAZ (NINJA) is an adaptor protein connecting JAZs with the co-repressor, TOPLESS (TPL), to mediate gene repression in JA-dependent root growth inhibition and defense pathways. However, whether NINJA or other adaptor proteins are employed in other JA-responsive biological processes remains to be elucidated. In the present study, we demonstrate that a previously uncharacterized protein, ECAP (EAR motif-Containing Adaptor Protein), directly interacts with JAZ6 and JAZ8 and enhances their transcriptional repression activities. We provide evidence that ECAP is a novel adaptor protein for JAZ6/8 recruitment of the transcriptional co-repressor, TOPLESS-RELATED 2 (TPR2), into a transcriptional repressor complex that represses the WD-repeat/bHLH/MYB complex, an important transcriptional activator in the JA-dependent anthocyanin biosynthesis pathway. Our findings, together with previous reports, reveal that specific adaptor proteins play a critical role in distinct JA responses by pairing different JAZs (which possess overlapping but also specific functions) with the general co-repressors, TPL and TPRs.
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Affiliation(s)
- Changjiang Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Lei Shi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yanan Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Wei Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Binqing Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Lei Zhu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Ying Fu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
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23
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Jasmonic Acid Signaling Pathway in Response to Abiotic Stresses in Plants. Int J Mol Sci 2020; 21:ijms21020621. [PMID: 31963549 PMCID: PMC7013817 DOI: 10.3390/ijms21020621] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/11/2020] [Accepted: 01/16/2020] [Indexed: 12/16/2022] Open
Abstract
Plants as immovable organisms sense the stressors in their environment and respond to them by means of dedicated stress response pathways. In response to stress, jasmonates (jasmonic acid, its precursors and derivatives), a class of polyunsaturated fatty acid-derived phytohormones, play crucial roles in several biotic and abiotic stresses. As the major immunity hormone, jasmonates participate in numerous signal transduction pathways, including those of gene networks, regulatory proteins, signaling intermediates, and proteins, enzymes, and molecules that act to protect cells from the toxic effects of abiotic stresses. As cellular hubs for integrating informational cues from the environment, jasmonates play significant roles in alleviating salt stress, drought stress, heavy metal toxicity, micronutrient toxicity, freezing stress, ozone stress, CO2 stress, and light stress. Besides these, jasmonates are involved in several developmental and physiological processes throughout the plant life. In this review, we discuss the biosynthesis and signal transduction pathways of the JAs and the roles of these molecules in the plant responses to abiotic stresses.
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24
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Oblessuc PR, Obulareddy N, DeMott L, Matiolli CC, Thompson BK, Melotto M. JAZ4 is involved in plant defense, growth, and development in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 101:371-383. [PMID: 31557372 DOI: 10.1111/tpj.14548] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 09/16/2019] [Indexed: 05/25/2023]
Abstract
Jasmonate zim-domain (JAZ) proteins comprise a family of transcriptional repressors that modulate jasmonate (JA) responses. JAZ proteins form a co-receptor complex with the F-box protein coronatine insensitive1 (COI1) that recognizes both jasmonoyl-l-isoleucine (JA-Ile) and the bacterial-produced phytotoxin coronatine (COR). Although several JAZ family members have been placed in this pathway, the role of JAZ4 in this model remains elusive. In this study, we observed that the jaz4-1 mutant of Arabidopsis is hyper-susceptible to Pseudomonas syringae pv. tomato (Pst) DC3000, while Arabidopsis lines overexpressing a JAZ4 protein lacking the Jas domain (JAZ4∆Jas) have enhanced resistance to this bacterium. Our results show that the Jas domain of JAZ4 is required for its physical interaction with COI1, MYC2 or MYC3, but not with the repressor complex adaptor protein NINJA. Furthermore, JAZ4 degradation is induced by COR in a proteasome- and Jas domain-dependent manner. Phenotypic evaluations revealed that expression of JAZ4∆Jas results in early flowering and increased length of root, hypocotyl, and petiole when compared with Col-0 and jaz4-1 plants, although JAZ4∆Jas lines remain sensitive to MeJA- and COR-induced root and hypocotyl growth inhibition. Additionally, jaz4-1 mutant plants have increased anthocyanin accumulation and late flowering compared with Col-0, while JAZ4∆Jas lines showed no alteration in anthocyanin production. These findings suggest that JAZ4 participates in the canonical JA signaling pathway leading to plant defense response in addition to COI1/MYC-independent functions in plant growth and development, supporting the notion that JAZ4-mediated signaling may have distinct branches.
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Affiliation(s)
- Paula R Oblessuc
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Nisita Obulareddy
- Department of Biology, University of Texas, Arlington, TX, 76019, USA
| | - Logan DeMott
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | | | - Blaine K Thompson
- Department of Biology, University of Texas, Arlington, TX, 76019, USA
| | - Maeli Melotto
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
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25
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Chen S, Zhao H, Luo T, Liu Y, Nie X, Li H. Characteristics and Expression Pattern of MYC Genes in Triticum aestivum, Oryza sativa, and Brachypodium distachyon. PLANTS (BASEL, SWITZERLAND) 2019; 8:E274. [PMID: 31398900 PMCID: PMC6724133 DOI: 10.3390/plants8080274] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/03/2019] [Accepted: 08/06/2019] [Indexed: 11/16/2022]
Abstract
Myelocytomatosis oncogenes (MYC) transcription factors (TFs) belong to basic helix-loop-helix (bHLH) TF family and have a special bHLH_MYC_N domain in the N-terminal region. Presently, there is no detailed and systematic analysis of MYC TFs in wheat, rice, and Brachypodium distachyon. In this study, 26 TaMYC, 7 OsMYC, and 7 BdMYC TFs were identified and their features were characterized. Firstly, they contain a JAZ interaction domain (JID) and a putative transcriptional activation domain (TAD) in the bHLH_MYC_N region and a BhlH region in the C-terminal region. In some cases, the bHLH region is followed by a leucine zipper region; secondly, they display tissue-specific expression patterns: wheat MYC genes are mainly expressed in leaves, rice MYC genes are highly expressed in stems, and B. distachyon MYC genes are mainly expressed in inflorescences. In addition, three types of cis-elements, including plant development/growth-related, hormone-related, and abiotic stresses-related were identified in different MYC gene promoters. In combination with the previous studies, these results indicate that MYC TFs mainly function in growth and development, as well as in response to stresses. This study laid a foundation for the further functional elucidation of MYC genes.
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Affiliation(s)
- Shoukun Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China
| | - Hongyan Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China
| | - Tengli Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China
| | - Yue Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China
| | - Xiaojun Nie
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China.
| | - Haifeng Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712000, China.
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26
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Zhai Q, Li C. The plant Mediator complex and its role in jasmonate signaling. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3415-3424. [PMID: 31089685 PMCID: PMC6609880 DOI: 10.1093/jxb/erz233] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 05/07/2019] [Indexed: 05/20/2023]
Abstract
The Mediator complex is an essential, multisubunit transcriptional coactivator that is highly conserved in eukaryotes. Mediator interacts with gene-specific transcription factors, the RNA polymerase II transcriptional machinery, as well as several other factors involved in transcription, and acts as an integral hub to regulate various aspects of transcription. Recent studies of the plant Mediator complex have established that it functions in diverse aspects of plant development and fitness. Jasmonate (JA) is an oxylipin-derived plant hormone that regulates plant immunity and development. The basic helix-loop-helix transcription factor MYC2, which is a master regulator of JA signaling, orchestrates genome-wide transcriptional reprogramming of plant cells to coordinate defense- and growth-related processes. Here, we review the function of the plant Mediator complex in regulating JA signaling. We focus on the multifunctional Mediator subunit MED25, which emerges as an integrative hub for the transcriptional regulation of jasmonate signaling.
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Affiliation(s)
- Qingzhe Zhai
- State Key Laboratory of Plant Genomics, National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Chuanyou Li
- State Key Laboratory of Plant Genomics, National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Correspondence:
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27
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Ruan J, Zhou Y, Zhou M, Yan J, Khurshid M, Weng W, Cheng J, Zhang K. Jasmonic Acid Signaling Pathway in Plants. Int J Mol Sci 2019; 20:ijms20102479. [PMID: 31137463 PMCID: PMC6566436 DOI: 10.3390/ijms20102479] [Citation(s) in RCA: 309] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/05/2019] [Accepted: 05/07/2019] [Indexed: 11/21/2022] Open
Abstract
Jasmonic acid (JA) and its precursors and dervatives, referred as jasmonates (JAs) are important molecules in the regulation of many physiological processes in plant growth and development, and especially the mediation of plant responses to biotic and abiotic stresses. JAs biosynthesis, perception, transport, signal transduction and action have been extensively investigated. In this review, we will discuss the initiation of JA signaling with a focus on environmental signal perception and transduction, JA biosynthesis and metabolism, transport of signaling molecules (local transmission, vascular bundle transmission, and airborne transportation), and biological function (JA signal receptors, regulated transcription factors, and biological processes involved).
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Affiliation(s)
- Jingjun Ruan
- College of Agriculture, Guizhou University, Guiyang 550025, China.
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yuexia Zhou
- College of Agriculture, Guizhou University, Guiyang 550025, China.
| | - Meiliang Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Jun Yan
- Schools of Pharmacy and Bioengineering, Chengdu University, Chengdu 610106, China.
| | - Muhammad Khurshid
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Institute of Biochemistry and Biotechnology, University of the Punjab, Lahore 54590, Pakistan.
| | - Wenfeng Weng
- College of Agriculture, Guizhou University, Guiyang 550025, China.
| | - Jianping Cheng
- College of Agriculture, Guizhou University, Guiyang 550025, China.
| | - Kaixuan Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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28
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JAZ repressors of metabolic defense promote growth and reproductive fitness in Arabidopsis. Proc Natl Acad Sci U S A 2018; 115:E10768-E10777. [PMID: 30348775 PMCID: PMC6233084 DOI: 10.1073/pnas.1811828115] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The plant hormone jasmonate promotes resistance to plant-eating organisms, ranging from pathogenic microbes to mammals. Jasmonate reprograms metabolism to fuel the production of diverse defense compounds and simultaneously inhibits plant growth. Understanding how growth is influenced across a range of defense levels remains unclear, but has important implications for optimizing crop productivity. Using a genetic approach to “tune” the jasmonate response, we assessed the physiological consequences of discrete levels of defense throughout the plant life cycle. Overactivation of jasmonate response led to carbon starvation, near loss of seed production and, under extreme conditions, lethality. Our findings explain the emergence of diverse strategies to keep jasmonate responses at bay and provide new insights into metabolic processes that underlie growth–defense trade-offs. Plant immune responses mediated by the hormone jasmonoyl-l-isoleucine (JA-Ile) are metabolically costly and often linked to reduced growth. Although it is known that JA-Ile activates defense responses by triggering the degradation of JASMONATE ZIM DOMAIN (JAZ) transcriptional repressor proteins, expansion of the JAZ gene family in vascular plants has hampered efforts to understand how this hormone impacts growth and other physiological tasks over the course of ontogeny. Here, we combined mutations within the 13-member Arabidopsis JAZ gene family to investigate the effects of chronic JAZ deficiency on growth, defense, and reproductive output. A higher-order mutant (jaz decuple, jazD) defective in 10 JAZ genes (JAZ1–7, -9, -10, and -13) exhibited robust resistance to insect herbivores and fungal pathogens, which was accompanied by slow vegetative growth and poor reproductive performance. Metabolic phenotypes of jazD discerned from global transcript and protein profiling were indicative of elevated carbon partitioning to amino acid-, protein-, and endoplasmic reticulum body-based defenses controlled by the JA-Ile and ethylene branches of immunity. Resource allocation to a strong defense sink in jazD leaves was associated with increased respiration and hallmarks of carbon starvation but no overt changes in photosynthetic rate. Depletion of the remaining JAZ repressors in jazD further exaggerated growth stunting, nearly abolished seed production and, under extreme conditions, caused spreading necrotic lesions and tissue death. Our results demonstrate that JAZ proteins promote growth and reproductive success at least in part by preventing catastrophic metabolic effects of an unrestrained immune response.
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29
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Valenzuela-Riffo F, Garrido-Bigotes A, Figueroa PM, Morales-Quintana L, Figueroa CR. Structural analysis of the woodland strawberry COI1-JAZ1 co-receptor for the plant hormone jasmonoyl-isoleucine. J Mol Graph Model 2018; 85:250-261. [PMID: 30243225 DOI: 10.1016/j.jmgm.2018.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 08/27/2018] [Accepted: 09/02/2018] [Indexed: 01/06/2023]
Abstract
The phytohormone jasmonoyl-isoleucine (JA-Ile) regulates fundamental plant processes. Fragaria vesca, the woodland strawberry, is a model plant for the Rosaceae family, in which the JA-Ile perception is poorly understood at the molecular level. JA-Ile promotes binding of JAZ repressor to COI1 protein in Arabidopsis to activate jasmonate (JA)-dependent responses. The aim of this work was to understand the molecular basis of the interaction between the F. vesca COI1 (FvCOI1) and JAZ1 (FvJAZ1) promoted by JA-Ile using a computational approach. Multiple sequence alignments and phylogenetic analyses of amino acid sequences were performed for FvCOI1, FvJAZ1 and their ortholog sequences. 3D structures for FvCOI1 and FvJAZ1 proteins were built by methods of homology modeling, using AtCOI1-JA-Ile-AtJAZ1 as template and then they were further refined and validated by molecular dynamics (MD) simulation. A molecular docking approach along with MDS analysis were used to gain insights into the interaction between a putative degron-like sequence present in FvJAZ1 with the FvCOI1-JA-Ile complex. FvCOI1 and FvJAZ1 showed high and moderate sequence identity, respectively, with the corresponding ortholog proteins from other plant species including apple, grape, tomato and Arabidopsis. Moreover, the FvJAZ1 has a variant C-terminal IPMQRK sequence instead of the canonical LPIARR degron sequence located in the Jas domain of AtJAZ1. The MD simulation results showed that the FvCOI1-JA-Ile-FvJAZ1 complex was stable, and the IPMQRK peptide of FvJAZ1 directly interacted with FvCOI1 and JA-Ile. The present research provides novel insight into the molecular interactions among key JA-signaling components in the model plant F. vesca, being few examples of characterized JA-Ile receptors at a structural level in plants.
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Affiliation(s)
- Felipe Valenzuela-Riffo
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
| | - Adrián Garrido-Bigotes
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile; Doctorate Program in Forest Sciences, Universidad de Concepción, Concepción, Chile
| | - Pablo M Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile.
| | - Luis Morales-Quintana
- Multidisciplinary Agroindustry Research Laboratory, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca, Chile.
| | - Carlos R Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile.
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30
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Song J, Zhang Y, Song S, Su W, Chen R, Sun G, Hao Y, Liu H. Comparative RNA-Seq analysis on the regulation of cucumber sex differentiation under different ratios of blue and red light. BOTANICAL STUDIES 2018; 59:21. [PMID: 30203294 PMCID: PMC6131680 DOI: 10.1186/s40529-018-0237-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/27/2018] [Indexed: 05/13/2023]
Abstract
Cucumber (Cucumis sativus L.) is a typical monoecism vegetable with individual male and female flowers, which has been used as a plant model for sex determination. It is well known that light is one of the most important environmental stimuli, which control the timing of the transition from vegetative growth to reproductive development. However, whether light controls sex determination remains elusive. To unravel this problem, we performed high-throughput RNA-Seq analyses, which compared the transcriptomes of shoot apices between R2B1(Red light:Blue light = 2:1)-treated and R4B1(Red light:Blue light = 4:1)-treated cucumber seedlings. Results showed that the higher proportion of blue light in the R2B1 treatment significantly induced the formation of female flowers and accelerated female flowering time in this whole study. The genes related to flowering time, such as flowering locus T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CO1 (SOC1), were up-regulated after R2B1 treatment. Furthermore, the transcriptome analysis showed that up-regulation and down-regulation of specific DEGs (the differentially expressed genes) were primarily the result of plant hormone signal transduction after treatments. The specific DEGs related with auxin formed the highest percentage of DEGs in the plant hormone signal transduction. In addition, the expression levels of transcription factors also changed after R2B1 treatment. Thus, sex differentiation affected by light quality might be induced by plant hormone signal transduction and transcription factors. These results provide a theoretical basis for further investigation of the regulatory mechanism of female flower formation under different light qualities in cucumber seedlings.
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Affiliation(s)
- Jiali Song
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Yiting Zhang
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Shiwei Song
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Wei Su
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Riyuan Chen
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Guangwen Sun
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Yanwei Hao
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
| | - Houcheng Liu
- College of Horticulture, South China Agricultural University, Guangzhou, 510642 China
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Huang H, Gao H, Liu B, Fan M, Wang J, Wang C, Tian H, Wang L, Xie C, Wu D, Liu L, Yan J, Qi T, Song S. bHLH13 Regulates Jasmonate-Mediated Defense Responses and Growth. Evol Bioinform Online 2018; 14:1176934318790265. [PMID: 30046236 PMCID: PMC6056788 DOI: 10.1177/1176934318790265] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/21/2018] [Indexed: 11/16/2022] Open
Abstract
Jasmonates (JAs) regulate plant growth and defense responses. On perception of bioactive JAs, the JA receptor CORONATINE INSENSITIVE1 (COI1) recruits JA ZIM-domain (JAZ) proteins for degradation, and JAZ-targeted transcription factors are released to regulate JA responses. The subgroup IIId bHLH transcriptional factors, including bHLH17, bHLH13, bHLH3, and bHLH14, interact with JAZs and repress JA responses. In this study, we show that IIId bHLH factors form dimers via the C-terminus in yeast. N-terminus of bHLH13 is essential for its transcriptional repression function. bHLH13 overexpression inhibits Arabidopsis resistance to the necrotrophic fungi Botrytis cinerea and defense against the insect Spodoptera exigua. COI1 mutation disrupts the oversensitivity of the quadruple mutant bhlh3 bhlh13 bhlh14 bhlh17 in various JA responses, including anthocyanin accumulation, root growth inhibition, and defense against B cinerea and S exigua. Disruption of the TTG1/bHLH/MYB complex blocks anthocyanin accumulation of bhlh3 bhlh13 bhlh14 bhlh17, whereas abolishment of MYC2 attenuates JA-inhibitory root growth of bhlh3 bhlh13 bhlh14 bhlh17. These results genetically demonstrate that IIId bHLH factors function downstream of COI1 to inhibit distinctive JA responses via antagonizing different transcriptional activators.
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Affiliation(s)
- Huang Huang
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture, College of Biological Sciences and Engineering, Beijing University of Agriculture, Beijing, China
| | - Hua Gao
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing, China
| | - Meng Fan
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Jiaojiao Wang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Cuili Wang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Haixia Tian
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Lanxiang Wang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Chengyuan Xie
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Dewei Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, China
| | - Liangyu Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing, China
| | - Jianbin Yan
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Tiancong Qi
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing, China
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32
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Garrido-Bigotes A, Figueroa NE, Figueroa PM, Figueroa CR. Jasmonate signalling pathway in strawberry: Genome-wide identification, molecular characterization and expression of JAZs and MYCs during fruit development and ripening. PLoS One 2018; 13:e0197118. [PMID: 29746533 PMCID: PMC5944998 DOI: 10.1371/journal.pone.0197118] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 04/26/2018] [Indexed: 11/18/2022] Open
Abstract
Jasmonates (JAs) are signalling molecules involved in stress responses, development and secondary metabolism biosynthesis, although their roles in fleshy-fruit development and ripening processes are not well known. In strawberry fruit, it has been proposed that JAs could regulate the early development through the activation of the JAs biosynthesis. Moreover, it has been reported that JA treatment increases anthocyanin content in strawberry fruit involving the bioactive jasmonate biosynthesis. Nevertheless, JA signalling pathway, of which main components are the COI1-JAZ co-receptor and the MYC transcription factors (TFs), has not been characterized in strawberry until now. Here we identified and characterized the woodland strawberry (Fragaria vesca) JAZ and MYC genes as well as studied their expression during development and ripening stages in commercial strawberry (Fragaria × ananassa) fruit. We described twelve putative JAZ proteins and two MYC TFs, which showed high conservation with respect to their orthologs in Arabidopsis thaliana and in other fleshy-fruit species such as Malus × domestica, Vitis vinifera and Solanum lycopersicum as revealed by gene synteny and phylogenetic analyses. Noteworthy, their expression levels exhibited a significant decrease from fruit development to ripening stages in F. × ananassa, along with others of the JA signalling-related genes such as FaNINJA and FaJAMs, encoding for negative regulators of JA responses. Moreover, we found that main JA signalling-related genes such as FaMYC2, and FaJAZ1 are promptly induced by JA treatment at early times in F. × ananassa fruit. These results suggest the conservation of the canonical JA signalling pathway in strawberry and a possible role of this pathway in early strawberry fruit development, which also correlates negatively with the beginning of the ripening process.
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Affiliation(s)
- Adrián Garrido-Bigotes
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
- Doctorate Program in Forest Sciences, Faculty of Forest Sciences, Universidad de Concepción, Concepción, Chile
| | - Nicolás E. Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
| | - Pablo M. Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
| | - Carlos R. Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
- * E-mail:
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Howe GA, Major IT, Koo AJ. Modularity in Jasmonate Signaling for Multistress Resilience. ANNUAL REVIEW OF PLANT BIOLOGY 2018; 69:387-415. [PMID: 29539269 DOI: 10.1146/annurev-arplant-042817-040047] [Citation(s) in RCA: 358] [Impact Index Per Article: 59.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The plant hormone jasmonate coordinates immune and growth responses to increase plant survival in unpredictable environments. The core jasmonate signaling pathway comprises several functional modules, including a repertoire of COI1-JAZ (CORONATINE INSENSITIVE1-JASMONATE-ZIM DOMAIN) coreceptors that couple jasmonoyl-l-isoleucine perception to the degradation of JAZ repressors, JAZ-interacting transcription factors that execute physiological responses, and multiple negative feedback loops to ensure timely termination of these responses. Here, we review the jasmonate signaling pathway with an emphasis on understanding how transcriptional responses are specific, tunable, and evolvable. We explore emerging evidence that JAZ proteins integrate multiple informational cues and mediate crosstalk by propagating changes in protein-protein interaction networks. We also discuss recent insights into the evolution of jasmonate signaling and highlight how plant-associated organisms manipulate the pathway to subvert host immunity. Finally, we consider how this mechanistic foundation can accelerate the rational design of jasmonate signaling for improving crop resilience and harnessing the wellspring of specialized plant metabolites.
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Affiliation(s)
- Gregg A Howe
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824, USA; ,
- Department of Biochemistry and Molecular Biology, and Plant Resilience Institute, Michigan State University, East Lansing, Michigan 48824, USA
| | - Ian T Major
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824, USA; ,
| | - Abraham J Koo
- Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, USA;
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Li Z, Woo HR, Guo H. Genetic redundancy of senescence-associated transcription factors in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:811-823. [PMID: 29309664 DOI: 10.1093/jxb/erx345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 09/29/2017] [Indexed: 05/25/2023]
Abstract
Leaf senescence is a genetically programmed process that constitutes the last stage of leaf development, and involves massive changes in gene expression. As a result of the intensive efforts that have been made to elucidate the molecular genetic mechanisms underlying leaf senescence, 184 genes that alter leaf senescence phenotypes when mutated or overexpressed have been identified in Arabidopsis thaliana over the past two decades. Concurrently, experimental evidence on functional redundancy within senescence-associated genes (SAGs) has increased. In this review, we focus on transcription factors that play regulatory roles in Arabidopsis leaf senescence, and describe the relationships among gene duplication, gene expression level, and senescence phenotypes. Previous findings and our re-analysis demonstrate the widespread existence of duplicate SAG pairs and a correlation between gene expression levels in duplicate genes and senescence-related phenotypic severity of the corresponding mutants. We also highlight effective and powerful tools that are available for functional analyses of redundant SAGs. We propose that the study of duplicate SAG pairs offers a unique opportunity to understand the regulation of leaf senescence and can guide the investigation of the functions of redundant SAGs via reverse genetic approaches.
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Affiliation(s)
- Zhonghai Li
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, Republic of Korea
| | - Hye Ryun Woo
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Hongwei Guo
- Department of Biology, South University of Science and Technology of China, Shenzhen, Guangdong, China
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Gross T, Broholm S, Becker A. CRABS CLAW Acts as a Bifunctional Transcription Factor in Flower Development. FRONTIERS IN PLANT SCIENCE 2018; 9:835. [PMID: 29973943 PMCID: PMC6019494 DOI: 10.3389/fpls.2018.00835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/29/2018] [Indexed: 05/06/2023]
Abstract
One of the crucial steps in the life cycle of angiosperms is the development of carpels. They are the most complex plant organs, harbor the seeds, and, after fertilization, develop into fruits and are thus an important ecological and economic trait. CRABS CLAW (CRC), a YABBY protein and putative transcription factor, is one of the major carpel developmental regulators in A. thaliana that includes a C2C2 zinc finger and a domain with similarities to an HMG box. CRC is involved in the regulation of processes such as carpel fusion and growth, floral meristem termination, and nectary formation. While its genetic interactions with other carpel development regulators are well described, its biochemical properties and molecular way of action remain unclear. We combined Bimolecular Fluorescence Complementation, Yeast Two-Hybrid, and Yeast One-Hybrid analyzes to shed light on the molecular biology of CRC. Our results showed that CRC dimerizes, also with other YABBY proteins, via the YABBY domain, and that its DNA binding is mainly cooperative and is mediated by the YABBY domain. Further, we identified that CRC is involved in floral meristem termination via transcriptional repression while it acts as a transcriptional activator in nectary development and carpel fusion and growth control. This work increases our understanding on how YABBY transcription factors interact with other proteins and how they regulate their targets.
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Affiliation(s)
- Thomas Gross
- Department of Biology, Institute of Botany, Justus Liebig University Giessen, Giessen, Germany
- *Correspondence: Thomas Gross,
| | - Suvi Broholm
- Biosciences and Environment Research Unit, Academy of Finland, Helsinki, Finland
| | - Annette Becker
- Department of Biology, Institute of Botany, Justus Liebig University Giessen, Giessen, Germany
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Liu Y, Li J, Wei G, Sun Y, Lu Y, Lan H, Li C, Zhang S, Cao M. Cloning, molecular evolution and functional characterization of ZmbHLH16, the maize ortholog of OsTIP2 (OsbHLH142). Biol Open 2017; 6:1654-1663. [PMID: 28970232 PMCID: PMC5703606 DOI: 10.1242/bio.026393] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/27/2017] [Indexed: 01/06/2023] Open
Abstract
The transcription factor ZmbHLH16, the maize ortholog of OsTIP2 (OsbHLH142), was isolated in the present study. Tissue expression analysis showed that ZmbHLH16 is preferentially expressed in male reproductive organs. Subcellular location analysis of ZmbHLH16 via rice protoplast indicated that it is located in the nucleus. Through nucleotide variation analysis, 36 polymorphic sites in ZmbHLH16, including 23 single nucleotide polymorphisms and 13 InDels, were detected among 78 maize inbred lines. Neutrality tests and linkage disequilibrium analysis showed that ZmbHLH16 experienced no significant evolutionary pressure. Yeast one-hybrid experiment showed that the first 80 residues in the N-terminus of ZmbHLH16 had transactivation activity, whereas the full length did not. Genome-wide coexpression analysis showed that 395 genes were coexpressed with ZmbHLH16. Among these genes, the transcription factor ZmbHLH51 had similar expression pattern and identical subcellular localization to those of ZmbHLH16. Subsequently, the interaction between ZmbHLH51 and ZmbHLH16 was verified by yeast two-hybrid experiment. Through yeast two-hybrid analysis of series truncated ZmbHLH16 fragments, we found not only the typical bHLH domain [175-221 amino acids (a.a.)], but also that the 81-160 a.a. and 241-365 a.a. of ZmbHLH16 could interact with ZmbHLH51. All these results lay the foundation for further understanding the functions of ZmbHLH16.
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Affiliation(s)
- Yongming Liu
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Jia Li
- Tropical Crops Genetic Resources Institute, Chinese Academic of Tropical Agricultural Sciences, 571737 Danzhou, China
| | - Gui Wei
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Yonghao Sun
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- National Key Lab of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Yanli Lu
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Hai Lan
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Chuan Li
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Suzhi Zhang
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Moju Cao
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
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37
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Song S, Huang H, Wang J, Liu B, Qi T, Xie D. MYC5 is Involved in Jasmonate-Regulated Plant Growth, Leaf Senescence and Defense Responses. PLANT & CELL PHYSIOLOGY 2017; 58:1752-1763. [PMID: 29017003 DOI: 10.1093/pcp/pcx112] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/03/2017] [Indexed: 06/07/2023]
Abstract
Jasmonates (JAs), lipid-derived phytohormones, regulate plant growth, development and defenses against biotic stresses. CORONATINE INSENSITIVE1 perceives bioactive JA and recruits JASMONATE ZIM-DOMAIN (JAZ) proteins for ubiquitination and subsequent degradation via the 26S proteasome, which de-represses JAZ-targeted transcription factors that regulate diverse JA responses. Recent studies showed that the Arabidopsis basic helix-loop-helix transcription factor MYC5 interacts with JAZs and regulates stamen development. However, whether MYC5 mediates other JA responses is unclear. Here, we show that MYC5 functions redundantly with MYC2, MYC3 and MYC4 to modulate JA-regulated root growth inhibition and plant defenses against insect attack and pathogen infection, and that it positively regulates JA-induced leaf senescence. Our findings define MYC5 as an important regulator that is essential for diverse JA responses.
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Affiliation(s)
- Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Huang Huang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jiaojiao Wang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Tiancong Qi
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Daoxin Xie
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
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38
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Mukhtar MS, Liu X, Somssich IE. Elucidating the role of WRKY27 in male sterility in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2017; 12:e1363945. [PMID: 28816593 PMCID: PMC5640203 DOI: 10.1080/15592324.2017.1363945] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The WRKY proteins belong to a superfamily of TFs that play pivotal roles in responses to a wide range of biotic, abiotic, developmental and physiologic cues. Here, we assayed the accumulation of basal WRKY27 transcripts in diverse tissue including root, shoot, leaf and flowers. We demonstrated that plants over-expressing WRKY27 transcript levels exhibit growth aberrations and fertility defects. Scanning electron microscopic data suggest that WRKY27 overexpressor plants exhibit pollen dehiscence defects. Our fluorescein diacetate hydrolysis assay showed that flowers of plants overexpressing WRKY27 display significantly decreased pollen viability. These sterility-related phenotypes were not rescued by the exogenous applications of different phytohormones. Our results indicate the involvement of WRKY27 in particular for proper plant biomass accumulation and male fertility.
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Affiliation(s)
- M. Shahid Mukhtar
- Department of Biology, University of Alabama at Birmingham, AL, USA
- Nutrition Obesity Research Center, University of Alabama at Birmingham, AL, USA
- M. Shahid Mukhtar Department of Biology, Campbell Hall 369, 1300 University Blvd. University of Alabama at Birmingham, Birmingham, AL 35294-1170, USA
| | - Xiaoyu Liu
- Department of Biology, University of Alabama at Birmingham, AL, USA
| | - Imre E. Somssich
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg 10, Koeln, Germany
- CONTACT Imre E. Somssich Department Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg 10, 50829 Koeln, Germany
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39
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Wasternack C. A plant's balance of growth and defense - revisited. THE NEW PHYTOLOGIST 2017; 215:1291-1294. [PMID: 28771818 DOI: 10.1111/nph.14720] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Claus Wasternack
- Laboratory of Growth Regulators, Center of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR, Palacký University, Šlechtitelů 11, Olomouc, CZ 78371, Czech Republic
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, Halle (Saale), D-06120, Germany
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40
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Avramova Z. The jasmonic acid-signalling and abscisic acid-signalling pathways cross talk during one, but not repeated, dehydration stress: a non-specific 'panicky' or a meaningful response? PLANT, CELL & ENVIRONMENT 2017; 40:1704-1710. [PMID: 28447364 DOI: 10.1111/pce.12967] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 06/07/2023]
Abstract
Experiencing diverse and recurring biotic and abiotic stresses throughout life, plants have evolved mechanisms to respond, survive and, eventually, adapt to changing habitats. The initial response to drought involves a large number of genes that are involved also in response to other stresses. According to current models, this initial response is non-specific, becoming stress-specific only at later time points. The question, then, is whether non-specific activation of various stress-signalling systems leading to the expression of numerous stress-regulated genes is a false-alarm (panicky) response or whether it has biologically relevant consequences for the plant. Here, it is argued that the initial activation of genes associated other stresses reflects an important event during which stress-specific mechanisms are generated to prevent subsequent activation of non-drought signalling pathways. How plants discriminate between a first and a repeated dehydration stress and how repression of non-drought specific genes is achieved will be discussed on the example of jasmonic acid-associated Arabidopsis genes activated by a first, but not subsequent, dehydration stresses. Revealing how expression of various biotic/abiotic stress responding genes is prevented under recurring drought spells may be critical for our understanding of how plants respond to dynamically changing environments.
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Affiliation(s)
- Zoya Avramova
- School of Biological Sciences, University of Nebraska, Lincoln, NE, 68588, USA
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41
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Major IT, Yoshida Y, Campos ML, Kapali G, Xin X, Sugimoto K, de Oliveira Ferreira D, He SY, Howe GA. Regulation of growth-defense balance by the JASMONATE ZIM-DOMAIN (JAZ)-MYC transcriptional module. THE NEW PHYTOLOGIST 2017; 215. [PMID: 28649719 PMCID: PMC5542871 DOI: 10.1111/nph.14638] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The plant hormone jasmonate (JA) promotes the degradation of JASMONATE ZIM-DOMAIN (JAZ) proteins to relieve repression on diverse transcription factors (TFs) that execute JA responses. However, little is known about how combinatorial complexity among JAZ-TF interactions maintains control over myriad aspects of growth, development, reproduction, and immunity. We used loss-of-function mutations to define epistatic interactions within the core JA signaling pathway and to investigate the contribution of MYC TFs to JA responses in Arabidopsis thaliana. Constitutive JA signaling in a jaz quintuple mutant (jazQ) was largely eliminated by mutations that block JA synthesis or perception. Comparison of jazQ and a jazQ myc2 myc3 myc4 octuple mutant validated known functions of MYC2/3/4 in root growth, chlorophyll degradation, and susceptibility to the pathogen Pseudomonas syringae. We found that MYC TFs also control both the enhanced resistance of jazQ leaves to insect herbivory and restricted leaf growth of jazQ. Epistatic transcriptional profiles mirrored these phenotypes and further showed that triterpenoid biosynthetic and glucosinolate catabolic genes are up-regulated in jazQ independently of MYC TFs. Our study highlights the utility of genetic epistasis to unravel the complexities of JAZ-TF interactions and demonstrates that MYC TFs exert master control over a JAZ-repressible transcriptional hierarchy that governs growth-defense balance.
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Affiliation(s)
- Ian T. Major
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Yuki Yoshida
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Marcelo L. Campos
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - George Kapali
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Xiu‐Fang Xin
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Koichi Sugimoto
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | | | - Sheng Yang He
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
- Department of Plant BiologyMichigan State UniversityEast LansingMI48824USA
- Howard Hughes Medical InstituteMichigan State UniversityEast LansingMI48824USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMI42284USA
| | - Gregg A. Howe
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMI42284USA
- Department of Biochemistry and Molecular BiologyMichigan State UniversityEast LansingMI48824USA
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42
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Huang H, Liu B, Liu L, Song S. Jasmonate action in plant growth and development. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1349-1359. [PMID: 28158849 DOI: 10.1093/jxb/erw495] [Citation(s) in RCA: 310] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Phytohormones, including jasmonates (JAs), gibberellin, ethylene, abscisic acid, and auxin, integrate endogenous developmental cues with environmental signals to regulate plant growth, development, and defense. JAs are well- recognized lipid-derived stress hormones that regulate plant adaptations to biotic stresses, including herbivore attack and pathogen infection, as well as abiotic stresses, including wounding, ozone, and ultraviolet radiation. An increasing number of studies have shown that JAs also have functions in a remarkable number of plant developmental events, including primary root growth, reproductive development, and leaf senescence. Since the 1980s, details of the JA biosynthesis pathway, signaling pathway, and crosstalk during plant growth and development have been elucidated. Here, we summarize recent advances and give an updated overview of JA action and crosstalk in plant growth and development.
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Affiliation(s)
- Huang Huang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Liangyu Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
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43
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Hu Y, Jiang Y, Han X, Wang H, Pan J, Yu D. Jasmonate regulates leaf senescence and tolerance to cold stress: crosstalk with other phytohormones. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1361-1369. [PMID: 28201612 DOI: 10.1093/jxb/erx004] [Citation(s) in RCA: 231] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 01/17/2017] [Indexed: 05/20/2023]
Abstract
Plants are challenged with numerous abiotic stresses, such as drought, cold, heat, and salt stress. These environmental stresses are major causes of crop failure and reduced yields worldwide. Phytohormones play essential roles in regulating various plant physiological processes and alleviating stressful perturbations. Jasmonate (JA), a group of oxylipin compounds ubiquitous in the plant kingdom, acts as a crucial signal to modulate multiple plant processes. Recent studies have shown evidence supporting the involvement of JA in leaf senescence and tolerance to cold stress. Concentrations of JA are much higher in senescent leaves compared with those in non-senescent ones. Treatment with exogenous JA induces leaf senescence and expression of senescence-associated genes. In response to cold stress, exogenous application of JA enhances Arabidopsis freezing tolerance with or without cold acclimation. Consistently, biosynthesis of endogenous JA is activated in response to cold exposure. JA positively regulates the CBF (C-REPEAT BINDING FACTOR) transcriptional pathway to up-regulate downstream cold-responsive genes and ultimately improve cold tolerance. JA interacts with other hormone signaling pathways (such as auxin, ethylene, and gibberellin) to regulate leaf senescence and tolerance to cold stress. In this review, we summarize recent studies that have provided insights into JA-mediated leaf senescence and cold-stress tolerance.
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Affiliation(s)
- Yanru Hu
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Yanjuan Jiang
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Xiao Han
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Houping Wang
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Jinjing Pan
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Diqiu Yu
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
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Wasternack C, Song S. Jasmonates: biosynthesis, metabolism, and signaling by proteins activating and repressing transcription. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1303-1321. [PMID: 27940470 DOI: 10.1093/jxb/erw443] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/07/2016] [Indexed: 05/21/2023]
Abstract
The lipid-derived phytohormone jasmonate (JA) regulates plant growth, development, secondary metabolism, defense against insect attack and pathogen infection, and tolerance to abiotic stresses such as wounding, UV light, salt, and drought. JA was first identified in 1962, and since the 1980s many studies have analyzed the physiological functions, biosynthesis, distribution, metabolism, perception, signaling, and crosstalk of JA, greatly expanding our knowledge of the hormone's action. In response to fluctuating environmental cues and transient endogenous signals, the occurrence of multilayered organization of biosynthesis and inactivation of JA, and activation and repression of the COI1-JAZ-based perception and signaling contributes to the fine-tuning of JA responses. This review describes the JA biosynthetic enzymes in terms of gene families, enzymatic activity, location and regulation, substrate specificity and products, the metabolic pathways in converting JA to activate or inactivate compounds, JA signaling in perception, and the co-existence of signaling activators and repressors.
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Affiliation(s)
- Claus Wasternack
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Institute of Experimental Botany AS CR, Šlechtitelu 11, CZ 78371 Olomouc, Czech Republic
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
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Huang H, Gao H, Liu B, Qi T, Tong J, Xiao L, Xie D, Song S. Arabidopsis MYB24 Regulates Jasmonate-Mediated Stamen Development. FRONTIERS IN PLANT SCIENCE 2017; 8:1525. [PMID: 28928760 PMCID: PMC5591944 DOI: 10.3389/fpls.2017.01525] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/21/2017] [Indexed: 05/04/2023]
Abstract
The phytohormone jasmonates (JAs) regulate various defense responses and diverse developmental processes including stamen development and fertility. Previous studies showed that JA induces CORONATINE INSENSITIVE 1-mediated degradation of JA ZIM-domain (JAZ) proteins, and activates the MYB transcription factors (such as MYB21 and MYB24) to regulate stamen development. In this study, we further uncover the mechanism underlying how MYB24 interacts with JAZs to control JA-regulated stamen development. We show that N-terminus of MYB21/24 interacts with 10 out of 12 JAZ proteins while both N-terminus and C-terminus of MYB24 are involved in dimerization of MYB21 and MYB24. Interestingly, male sterility of the JA-deficient mutant opr3 can be rescued by suitable level of the MYB24 overexpression but not by excessive high level of MYB24. Surprisingly, overexpression of MYB24NT, but not MYB24CT, could cause male sterility. These results provide new insights on MYB factors in JA-regulated stamen development.
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Affiliation(s)
- Huang Huang
- School of Life Sciences, Tsinghua UniversityBeijing, China
- College of Biological Science and Engineering, Beijing University of AgricultureBeijing, China
| | - Hua Gao
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal UniversityBeijing, China
| | - Tiancong Qi
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Jianhua Tong
- College of Bioscience and Biotechnology, Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural UniversityChangsha, China
| | - Langtao Xiao
- College of Bioscience and Biotechnology, Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural UniversityChangsha, China
| | - Daoxin Xie
- School of Life Sciences, Tsinghua UniversityBeijing, China
- *Correspondence: Daoxin Xie, Susheng Song,
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal UniversityBeijing, China
- *Correspondence: Daoxin Xie, Susheng Song,
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Sheng Y, Wang Y, Jiao S, Jin Y, Ji P, Luan F. Mapping and Preliminary Analysis of ABORTED MICROSPORES ( AMS) as the Candidate Gene Underlying the Male Sterility ( MS-5) Mutant in Melon ( Cucumis melo L.). FRONTIERS IN PLANT SCIENCE 2017; 8:902. [PMID: 28611814 PMCID: PMC5447745 DOI: 10.3389/fpls.2017.00902] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/15/2017] [Indexed: 05/06/2023]
Abstract
Melon is an important agricultural and economic vegetable crop worldwide. The genetic male sterility mutant (ms-5) has a recessive nuclear gene that controls the male sterility germplasm. Male sterility could reduce the cost of F1 seed production in melon, but heterozygous fertile plants should be removed before pollination. In this study, bulked segregant analysis combined with specific length amplified fragment sequencing was applied to map the single nuclear male sterility recessive gene. A 30-kb candidate region on chromosome 9 located on scaffold 000048 and spanning 2,522,791 to 2,555,104 bp was identified and further confirmed by cleavage amplified polymorphic sequence markers based on parental line resequencing data and classical mapping of 252 F2 individuals. Gene prediction indicated that six annotated genes are present in the 30-kb candidate region. Quantitative RT-PCR revealed significant differences in the expression level of the LOC103498166 ABORTED MICROSPORES (AMS) gene in male-sterile lines (ms-5) and male-fertile (HM1-1) lines during the 2-mm (tetrad) and 5-mm (the first pollen mitosis) periods, and negative regulation of the AMS candidate gene transcription factor was also detected. Sequencing and cluster analysis of the AMS transcription factor revealed five single-nucleotide polymorphisms between the parental lines. The data presented herein suggest that the AMS transcription factor is a possible candidate gene for single nuclear male sterility in melon. The results of this study will help breeders to identify male-sterile and -fertile plants at seeding as marker-assisted selection methods, which would reduce the cost of seed production and improve the use of male-sterile lines in melon.
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Affiliation(s)
- Yunyan Sheng
- Department of Agriculture, Heilongjiang Bayi Agricultural UniversityDaqing, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture/Northeast Agricultural UniversityHarbin, China
- *Correspondence: Yunyan Sheng,
| | - Yudan Wang
- Department of Agriculture, Heilongjiang Bayi Agricultural UniversityDaqing, China
| | - Shiqi Jiao
- Department of Horticulture, Northeast Agricultural UniversityHarbin, China
| | - Yazhong Jin
- Department of Agriculture, Heilongjiang Bayi Agricultural UniversityDaqing, China
| | - Peng Ji
- Department of Agriculture, Heilongjiang Bayi Agricultural UniversityDaqing, China
| | - Feishi Luan
- Department of Horticulture, Northeast Agricultural UniversityHarbin, China
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47
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Zavala-Gonzalez EA, Rodríguez-Cazorla E, Escudero N, Aranda-Martinez A, Martínez-Laborda A, Ramírez-Lepe M, Vera A, Lopez-Llorca LV. Arabidopsis thaliana root colonization by the nematophagous fungus Pochonia chlamydosporia is modulated by jasmonate signaling and leads to accelerated flowering and improved yield. THE NEW PHYTOLOGIST 2017; 213:351-364. [PMID: 27456071 DOI: 10.1111/nph.14106] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/13/2016] [Indexed: 05/09/2023]
Abstract
Pochonia chlamydosporia has been intensively studied in nematode control of different crops. We have investigated the interaction between P. chlamydosporia and the model system Arabidopsis thaliana under laboratory conditions in the absence of nematodes. This study demonstrates that P. chlamydosporia colonizes A. thaliana. Root colonization monitored with green fluorescent protein-tagged P. chlamydosporia and quantitative PCR (qPCR) quantitation methods revealed root cell invasion. Fungal inoculation reduced flowering time and stimulated plant growth, as determined by total FW increase, faster development of inflorescences and siliques, and a higher yield in terms of seed production per plant. Precocious flowering was associated with significant expression changes in key flowering-time genes. In addition, we also provided molecular and genetic evidence that point towards jasmonate signaling as an important factor to modulate progression of plant colonization by the fungus. Our results indicate that P. chlamydosporia provides benefits to the plant in addition to its nematophagous activity. This report highlights the potential of P. chlamydosporia to improve yield in economically important crops.
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Affiliation(s)
- Ernesto A Zavala-Gonzalez
- Multidisciplinary Institute for Environmental Studies (MIES) 'Ramon Margalef', Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. 99, Alicante, 03080, Spain
- Food Research and Development Unit (UNIDA), Laboratory of Genetics, Technological Institute of Veracruz, Veracruz, 91897, México
| | | | - Nuria Escudero
- Multidisciplinary Institute for Environmental Studies (MIES) 'Ramon Margalef', Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. 99, Alicante, 03080, Spain
| | - Almudena Aranda-Martinez
- Multidisciplinary Institute for Environmental Studies (MIES) 'Ramon Margalef', Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. 99, Alicante, 03080, Spain
| | | | - Mario Ramírez-Lepe
- Food Research and Development Unit (UNIDA), Laboratory of Genetics, Technological Institute of Veracruz, Veracruz, 91897, México
| | - Antonio Vera
- Area de Genética, Universidad Miguel Hernández, Campus de Sant Joan, Alicante, 03550, Spain
| | - Luis V Lopez-Llorca
- Multidisciplinary Institute for Environmental Studies (MIES) 'Ramon Margalef', Department of Marine Sciences and Applied Biology, University of Alicante, Aptdo. 99, Alicante, 03080, Spain
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48
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Liu N, Staswick PE, Avramova Z. Memory responses of jasmonic acid-associated Arabidopsis genes to a repeated dehydration stress. PLANT, CELL & ENVIRONMENT 2016; 39:2515-2529. [PMID: 27451106 DOI: 10.1111/pce.12806] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 07/13/2016] [Accepted: 07/17/2016] [Indexed: 05/22/2023]
Abstract
Dehydration stress activates numerous genes co-regulated by diverse signaling pathways. Upon repeated exposures, however, a subset of these genes does not respond maintaining instead transcription at their initial pre-stressed levels ('revised-response' genes). Most of these genes are involved in jasmonic acid (JA) biosynthesis, JA-signaling and JA-mediated stress responses. How these JA-associated genes are regulated to provide different responses to similar dehydration stresses is an enigma. Here, we investigate molecular mechanisms that contribute to this transcriptional behavior. The memory-mechanism is stress-specific: one exposure to dehydration stress or to abscisic acid (ABA) is required to prevent transcription in the second. Both ABA-mediated and JA-mediated pathways are critical for the activation of these genes, but the two signaling pathways interact differently during a single or multiple encounters with dehydration stress. Synthesis of JA during the first (S1) but not the second dehydration stress (S2) accounts for the altered transcriptional responses. We propose a model for these memory responses, wherein lack of MYC2 and of JA synthesis in S2 is responsible for the lack of expression of downstream genes. The similar length of the memory displayed by different memory-type genes suggests biological relevance for transcriptional memory as a gene-regulating mechanism during recurring bouts of drought.
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Affiliation(s)
- Ning Liu
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Paul E Staswick
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Zoya Avramova
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
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49
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Chini A, Gimenez-Ibanez S, Goossens A, Solano R. Redundancy and specificity in jasmonate signalling. CURRENT OPINION IN PLANT BIOLOGY 2016; 33:147-156. [PMID: 27490895 DOI: 10.1016/j.pbi.2016.07.005] [Citation(s) in RCA: 232] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 07/05/2016] [Accepted: 07/12/2016] [Indexed: 05/21/2023]
Abstract
Jasmonates (JAs) are essential phytohormones regulating plant development and environmental adaptation. Many components of the JA-signalling pathway have been identified. However, our insight into the mechanisms by which a single bioactive JA hormone can regulate a myriad of physiological processes and provide specificity in the response remains limited. Recent findings on molecular components suggest that, despite apparent redundancy, specificity is achieved by (1) distinct protein-protein interactions forming unique JAZ/transcription factor complexes, (2) discrete spatiotemporal expression of specific components, (3) variable hormone thresholds for the formation of multiple JA receptor complexes and (4) integration of several signals by JA-pathway components. The molecular modularity that is thereby created enables a single bioactive hormone to specifically modulate multiple JA-outputs in response to different environmental and developmental cues.
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Affiliation(s)
- Andrea Chini
- Department of Plant Molecular Genetics, National Centre for Biotechnology (CNB-CSIC), 28049 Madrid, Spain
| | - Selena Gimenez-Ibanez
- Department of Plant Molecular Genetics, National Centre for Biotechnology (CNB-CSIC), 28049 Madrid, Spain
| | - Alain Goossens
- Department of Plant Systems Biology, Flanders Institute for Biotechnology (VIB), Technologiepark 927, B-9052 Gent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, B-9052 Gent, Belgium
| | - Roberto Solano
- Department of Plant Molecular Genetics, National Centre for Biotechnology (CNB-CSIC), 28049 Madrid, Spain.
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50
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Goossens J, Fernández-Calvo P, Schweizer F, Goossens A. Jasmonates: signal transduction components and their roles in environmental stress responses. PLANT MOLECULAR BIOLOGY 2016; 68:1333-1347. [PMID: 27927998 DOI: 10.1093/jxb/erw440] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Jasmonates, oxylipin-type plant hormones, are implicated in diverse aspects of plant growth development and interaction with the environment. Following diverse developmental and environmental cues, jasmonate is produced, conjugated to the amino acid isoleucine and perceived by a co-receptor complex composed of the Jasmonate ZIM-domain (JAZ) repressor proteins and an E3 ubiquitin ligase complex containing the F-box CORONATINE INSENSITIVE 1 (COI1). This event triggers the degradation of the JAZ proteins and the release of numerous transcription factors, including MYC2 and its homologues, which are otherwise bound and inhibited by the JAZ repressors. Here, we will review the role of the COI1, JAZ and MYC2 proteins in the interaction of the plant with its environment, illustrating the significance of jasmonate signalling, and of the proteins involved, for responses to both biotic stresses caused by insects and numerous microbial pathogens and abiotic stresses caused by adverse climatic conditions. It has also become evident that crosstalk with other hormone signals, as well as light and clock signals, plays an important role in the control and fine-tuning of these stress responses. Finally, we will discuss how several pathogens exploit the jasmonate perception and early signalling machinery to decoy the plants defence systems.
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Affiliation(s)
- Jonas Goossens
- Department of Plant Systems Biology, Flanders Institute for Biotechnology, Technologiepark 927, 9052, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052, Ghent, Belgium
| | - Patricia Fernández-Calvo
- Department of Plant Systems Biology, Flanders Institute for Biotechnology, Technologiepark 927, 9052, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052, Ghent, Belgium
| | - Fabian Schweizer
- Department of Plant Systems Biology, Flanders Institute for Biotechnology, Technologiepark 927, 9052, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052, Ghent, Belgium
| | - Alain Goossens
- Department of Plant Systems Biology, Flanders Institute for Biotechnology, Technologiepark 927, 9052, Ghent, Belgium.
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052, Ghent, Belgium.
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