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Nguyen QM, Iswanto ABB, Kang H, Moon J, Phan KAT, Son GH, Suh MC, Chung EH, Gassmann W, Kim SH. The processed C-terminus of AvrRps4 effector suppresses plant immunity via targeting multiple WRKYs. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 38869289 DOI: 10.1111/jipb.13710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 06/14/2024]
Abstract
Pathogens generate and secrete effector proteins to the host plant cells during pathogenesis to promote virulence and colonization. If the plant carries resistance (R) proteins that recognize pathogen effectors, effector-triggered immunity (ETI) is activated, resulting in a robust immune response and hypersensitive response (HR). The bipartite effector AvrRps4 from Pseudomonas syringae pv. pisi has been well studied in terms of avirulence function. In planta, AvrRps4 is processed into two parts. The C-terminal fragment of AvrRps4 (AvrRps4C) induces HR in turnip and is recognized by the paired resistance proteins AtRRS1/AtRPS4 in Arabidopsis. Here, we show that AvrRps4C targets a group of Arabidopsis WRKY, including WRKY46, WRKY53, WRKY54, and WRKY70, to induce its virulence function. Indeed, AvrRps4C suppresses the general binding and transcriptional activities of immune-positive regulator WRKY54 and WRKY54-mediated resistance. AvrRps4C interferes with WRKY54's binding activity to target gene SARD1 in vitro, suggesting WRKY54 is sequestered from the SARD1 promoter by AvrRps4C. Through the interaction of AvrRps4C with four WRKYs, AvrRps4 enhances the formation of homo-/heterotypic complexes of four WRKYs and sequesters them in the cytoplasm, thus inhibiting their function in plant immunity. Together, our results provide a detailed virulence mechanism of AvrRps4 through its C-terminus.
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Affiliation(s)
- Quang-Minh Nguyen
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Arya Bagus Boedi Iswanto
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Hobin Kang
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Jiyun Moon
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Kieu Anh Thi Phan
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Geon Hui Son
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
| | - Mi Chung Suh
- Department of Life Science, Sogang University, Seoul, 04107, Korea
| | - Eui-Hwan Chung
- Department of Plant Biotechnology, Korea University, Seoul, 02841, Korea
| | - Walter Gassmann
- Division of Plant Science and Technology, Christopher S. Bond Life Sciences Center and Interdisciplinary Plant Group, University of Missouri, Columbia, 65211, Missouri, USA
| | - Sang Hee Kim
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 52828, Korea
- Division of Life Science and Research Institute of Molecular Alchemy, Gyeongsang National University, Jinju, 52828, Korea
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Rehman S, Bahadur S, Xia W. Unlocking nature's secrets: The pivotal role of WRKY transcription factors in plant flowering and fruit development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112150. [PMID: 38857658 DOI: 10.1016/j.plantsci.2024.112150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 06/02/2024] [Accepted: 06/03/2024] [Indexed: 06/12/2024]
Abstract
The WRKY transcription factor family is a key player in the regulatory mechanisms of flowering plants, significantly influencing both their biotic and abiotic response systems as well as being vital to numerous physiological and biological functions. Over the past two decades, the functionality of WRKY proteins has been the subject of extensive research in over 50 plant species, with a strong focus on their roles in responding to various stresses. Despite this extensive research, there remains a notable gap in comprehensive studies aimed at understanding how specific WRKY genes directly influence the timing of flowering and fruit development. This review offers an up-to-date look at WRKY family genes and provides insights into the key genes of WRKY to control flowering, enhance fruit ripening and secondary metabolism synthesis, and maintain fruit quality of various plants, including annuals, perennials, medicinal, and crop plants. The WRKY transcription factors serve as critical regulators within the transcriptional regulatory network, playing a crucial role in the precise enhancement of flowering processes. It is also involved in the up-regulation of fruit ripening was strongly demonstrated by combined transcriptomics and metabolomic investigation. Therefore, we speculated that the WRKY family is known to be a key regulator of flowering and fruiting in plants. This detailed insight will enable the identification of the series of molecular occurrences featuring WRKY proteins throughout the stages of flowering and fruiting.
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Affiliation(s)
- Shazia Rehman
- Sanya Nanfan Research Institution, Hainan University, Sanya, China; College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Saraj Bahadur
- College of Forestry, Hainan University, Haikou 570228, China; College of Life and Health Sciences, Hainan University, Haikou 570228, China.
| | - Wei Xia
- Sanya Nanfan Research Institution, Hainan University, Sanya, China; College of Tropical Crops, Hainan University, Haikou 570228, China.
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Miao W, Xiao X, Wang Y, Ge L, Yang Y, Liu Y, Liao Y, Guan Z, Chen S, Fang W, Chen F, Zhao S. CmWRKY6-1-CmWRKY15-like transcriptional cascade negatively regulates the resistance to fusarium oxysporum infection in Chrysanthemum morifolium. HORTICULTURE RESEARCH 2023; 10:uhad101. [PMID: 37577400 PMCID: PMC10419886 DOI: 10.1093/hr/uhad101] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 05/09/2023] [Indexed: 08/15/2023]
Abstract
Chrysanthemum Fusarium wilt is a soil-borne disease that causes serious economic losses to the chrysanthemum industry. However, the molecular mechanism underlying the response of chrysanthemum WRKY to Fusarium oxysporum infection remains largely unknown. In this study, we isolated CmWRKY6-1 from chrysanthemum 'Jinba' and identified it as a transcriptional repressor localized in the nucleus via subcellular localization and transcriptional activation assays. We found that CmWRKY6-1 negatively regulated resistance to F. oxysporum and affected reactive oxygen species (ROS) and salicylic acid (SA) pathways using transgenic experiments and transcriptomic analysis. Moreover, CmWRKY6-1 bound to the W-box element on the CmWRKY15-like promoter and inhibited its expression. Additionally, we observed that CmWRKY15-like silencing in chrysanthemum reduced its resistance to F. oxysporum via transgenic experiments. In conclusion, we revealed the mechanism underlying the CmWRKY6-1-CmWRKY15-like cascade response to F. oxysporum infection in chrysanthemum and demonstrated that CmWRKY6-1 and CmWRKY15-like regulates the immune system.
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Affiliation(s)
- Weihao Miao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Xiangyu Xiao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Yuean Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Lijiao Ge
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Yanrong Yang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Ye Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Yuan Liao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Zhiyong Guan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Sumei Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Weimin Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Fadi Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
| | - Shuang Zhao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Zhongshan Biological Breeding Laboratory, No.50 Zhongling Street, Nanjing, Jiangsu 210014, China
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Long L, Gu L, Wang S, Cai H, Wu J, Wang J, Yang M. Progress in the understanding of WRKY transcription factors in woody plants. Int J Biol Macromol 2023; 242:124379. [PMID: 37178519 DOI: 10.1016/j.ijbiomac.2023.124379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 05/15/2023]
Abstract
The WRKY transcription factor (TF) family, named for its iconic WRKY domain, is among the largest and most functionally diverse TF families in higher plants. WRKY TFs typically interact with the W-box of the target gene promoter to activate or inhibit the expression of downstream genes; these TFs are involved in the regulation of various physiological responses. Analyses of WRKY TFs in numerous woody plant species have revealed that WRKY family members are broadly involved in plant growth and development, as well as responses to biotic and abiotic stresses. Here, we review the origin, distribution, structure, and classification of WRKY TFs, along with their mechanisms of action, the regulatory networks in which they are involved, and their biological functions in woody plants. We consider methods currently used to investigate WRKY TFs in woody plants, discuss outstanding problems, and propose several new research directions. Our objective is to understand the current progress in this field and provide new perspectives to accelerate the pace of research that enable greater exploration of the biological functions of WRKY TFs.
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Affiliation(s)
- Lianxiang Long
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China
| | - Lijiao Gu
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China
| | - Shijie Wang
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China
| | - Hongyu Cai
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China
| | - Jianghao Wu
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China
| | - Jinmao Wang
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China.
| | - Minsheng Yang
- Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding 071000, China; Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding 071000, China.
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Ren L, Wan W, Yin D, Deng X, Ma Z, Gao T, Cao X. Genome-wide analysis of WRKY transcription factor genes in Toona sinensis: An insight into evolutionary characteristics and terpene synthesis. FRONTIERS IN PLANT SCIENCE 2023; 13:1063850. [PMID: 36743538 PMCID: PMC9895799 DOI: 10.3389/fpls.2022.1063850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/13/2022] [Indexed: 06/18/2023]
Abstract
WRKY transcription factors (TFs), one of the largest TF families, serve critical roles in the regulation of secondary metabolite production. However, little is known about the expression pattern of WRKY genes during the germination and maturation processes of Toona sinensis buds. In the present study, the new assembly of the T. sinensis genome was used for the identification of 78 TsWRKY genes, including gene structures, phylogenetic features, chromosomal locations, conserved protein domains, cis-regulatory elements, synteny, and expression profiles. Gene duplication analysis revealed that gene tandem and segmental duplication events drove the expansion of the TsWRKYs family, with the latter playing a key role in the creation of new TsWRKY genes. The synteny and evolutionary constraint analyses of the WRKY proteins among T. sinensis and several distinct species provided more detailed evidence of gene evolution for TsWRKYs. Besides, the expression patterns and co-expression network analysis show TsWRKYs may multi-genes co-participate in regulating terpenoid biosynthesis. The findings revealed that TsWRKYs potentially play a regulatory role in secondary metabolite synthesis, forming the basis for further functional characterization of WRKY genes with the intention of improving T. sinensis.
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Affiliation(s)
- Liping Ren
- Key Laboratory of Horticultural Plant Biology of Biological and Food Engineering School, Fuyang Normal University, Fuyang, China
- Horticultural Institute, Fuyang Academy of Agricultural Sciences, Fuyang, China
| | - Wenyang Wan
- Key Laboratory of Horticultural Plant Biology of Biological and Food Engineering School, Fuyang Normal University, Fuyang, China
| | - Dandan Yin
- Key Laboratory of Horticultural Plant Biology of Biological and Food Engineering School, Fuyang Normal University, Fuyang, China
| | - Xianhui Deng
- Key Laboratory of Horticultural Plant Biology of Biological and Food Engineering School, Fuyang Normal University, Fuyang, China
| | - Zongxin Ma
- Horticultural Institute, Fuyang Academy of Agricultural Sciences, Fuyang, China
| | - Ting Gao
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, China
| | - Xiaohan Cao
- Key Laboratory of Horticultural Plant Biology of Biological and Food Engineering School, Fuyang Normal University, Fuyang, China
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Rosignoli S, Paiardini A. Boosting the Full Potential of PyMOL with Structural Biology Plugins. Biomolecules 2022; 12:biom12121764. [PMID: 36551192 PMCID: PMC9775141 DOI: 10.3390/biom12121764] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Over the past few decades, the number of available structural bioinformatics pipelines, libraries, plugins, web resources and software has increased exponentially and become accessible to the broad realm of life scientists. This expansion has shaped the field as a tangled network of methods, algorithms and user interfaces. In recent years PyMOL, widely used software for biomolecules visualization and analysis, has started to play a key role in providing an open platform for the successful implementation of expert knowledge into an easy-to-use molecular graphics tool. This review outlines the plugins and features that make PyMOL an eligible environment for supporting structural bioinformatics analyses.
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Mirza Z, Haque MM, Gupta M. WRKY transcription factors: a promising way to deal with arsenic stress in rice. Mol Biol Rep 2022; 49:10895-10904. [PMID: 35941412 DOI: 10.1007/s11033-022-07772-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 11/30/2022]
Abstract
Arsenic (As) is a global carcinogenic contaminant, and is one of the significant environmental constraints that limits the development and yield of crop plants. It is always tagged along with rice as rice takes up As and tends to accumulate it in grains. This amassment makes a way for As to get into the food chain that leads to unforeseen human health risks. Being viewed as parallel with toxicity, As in rice is an important global risk that calls for an urgent solution. WRKY Transcription Factors (TFs) seems to be promising in this area. The classical and substantial progress in the molecular mechanism of WRKY TFs, strengthened the understanding of innovative solutions for dealing with As in rice. Here, we review the potential of WRKY TFs under As stressed rice as a genetic solution and also provide insights into As and rice. Further, we develop an understanding of WRKY TF gene family and its regulation in rice. To date, studies on the role of WRKY TFs under As stressed rice are lacking. This area needs to be explored more so that this gene family can be utilized as an effective genetic tool that can break the As cycle to develop low or As free rice cultivar.
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Affiliation(s)
- Zainab Mirza
- Ecotoxicogenomics Lab, Department of Biotechnology, Jamia Millia Islamia, 25, New Delhi, India
| | - Mohammad Mahfuzul Haque
- Ecotoxicogenomics Lab, Department of Biotechnology, Jamia Millia Islamia, 25, New Delhi, India
| | - Meetu Gupta
- Ecotoxicogenomics Lab, Department of Biotechnology, Jamia Millia Islamia, 25, New Delhi, India.
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