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Zhao Z, Wang R, Su W, Sun T, Qi M, Zhang X, Wei F, Yu Z, Xiao F, Yan L, Yang C, Zhang J, Wang D. A comprehensive analysis of the WRKY family in soybean and functional analysis of GmWRKY164-GmGSL7c in resistance to soybean mosaic virus. BMC Genomics 2024; 25:620. [PMID: 38898399 PMCID: PMC11188170 DOI: 10.1186/s12864-024-10523-8] [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: 12/13/2023] [Accepted: 06/14/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Soybean mosaic disease caused by soybean mosaic virus (SMV) is one of the most devastating and widespread diseases in soybean producing areas worldwide. The WRKY transcription factors (TFs) are widely involved in plant development and stress responses. However, the roles of the GmWRKY TFs in resistance to SMV are largely unclear. RESULTS Here, 185 GmWRKYs were characterized in soybean (Glycine max), among which 60 GmWRKY genes were differentially expressed during SMV infection according to the transcriptome data. The transcriptome data and RT-qPCR results showed that the expression of GmWRKY164 decreased after imidazole treatment and had higher expression levels in the incompatible combination between soybean cultivar variety Jidou 7 and SMV strain N3. Remarkably, the silencing of GmWRKY164 reduced callose deposition and enhanced virus spread during SMV infection. In addition, the transcript levels of the GmGSL7c were dramatically lower upon the silencing of GmWRKY164. Furthermore, EMSA and ChIP-qPCR revealed that GmWRKY164 can directly bind to the promoter of GmGSL7c, which contains the W-box element. CONCLUSION Our findings suggest that GmWRKY164 plays a positive role in resistance to SMV infection by regulating the expression of GmGSL7c, resulting in the deposition of callose and the inhibition of viral movement, which provides guidance for future studies in understanding virus-resistance mechanisms in soybean.
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Affiliation(s)
- Zhihua Zhao
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Rongna Wang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Weihua Su
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Tianjie Sun
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Mengnan Qi
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Xueyan Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Fengju Wei
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China
| | - Zhouliang Yu
- School of Life Sciences, Yunnan University, Kunming, 650500, China
| | - Fuming Xiao
- Handan Municipal Academy of Agricultural Sciences, Hebei Province, Handan, 056001, China
| | - Long Yan
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050031, China
| | - Chunyan Yang
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050031, China
| | - Jie Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China.
| | - Dongmei Wang
- State Key Laboratory of North China Crop Improvement and Regulation/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding, 071001, China.
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Li M, Li J, Zhang Y, Zhai Y, Chen Y, Lin L, Peng J, Zheng H, Chen J, Yan F, Lu Y. Integrated ATAC-seq and RNA-seq data analysis identifies transcription factors related to rice stripe virus infection in Oryza sativa. MOLECULAR PLANT PATHOLOGY 2024; 25:e13446. [PMID: 38502176 PMCID: PMC10950023 DOI: 10.1111/mpp.13446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/29/2024] [Accepted: 03/03/2024] [Indexed: 03/20/2024]
Abstract
Animal studies have shown that virus infection causes changes in host chromatin accessibility, but little is known about changes in chromatin accessibility of plants infected by viruses and its potential impact. Here, rice infected by rice stripe virus (RSV) was used to investigate virus-induced changes in chromatin accessibility. Our analysis identified a total of 6462 open- and 3587 closed-differentially accessible chromatin regions (DACRs) in rice under RSV infection by ATAC-seq. Additionally, by integrating ATAC-seq and RNA-seq, 349 up-regulated genes in open-DACRs and 126 down-regulated genes in closed-DACRs were identified, of which 34 transcription factors (TFs) were further identified by search of upstream motifs. Transcription levels of eight of these TFs were validated by reverse transcription-PCR. Importantly, four of these TFs (OsWRKY77, OsWRKY28, OsZFP12 and OsERF91) interacted with RSV proteins and are therefore predicted to play important roles in RSV infection. This is the first application of ATAC-seq and RNA-seq techniques to analyse changes in rice chromatin accessibility caused by RSV infection. Integrating ATAC-seq and RNA-seq provides a new approach to select candidate TFs in response to virus infection.
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Affiliation(s)
- Miaomiao Li
- College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Jing Li
- College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Yan Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Yushan Zhai
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Yi Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Lin Lin
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Jiejun Peng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Hongying Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Jianping Chen
- College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Fei Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
| | - Yuwen Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‐products, Institute of Plant VirologyNingbo UniversityNingboChina
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Krishnappa C, Balamurugan A, Velmurugan S, Kumar S, Sampathrajan V, Kundu A, Javed M, Chouhan V, Ganesan P, Kumar A. Rice foliar-adapted Pantoea species: Promising microbial biostimulants enhancing rice resilience against foliar pathogens, Magnaporthe oryzae and Xanthomonas oryzae pv. oryzae. Microb Pathog 2024; 186:106445. [PMID: 37956936 DOI: 10.1016/j.micpath.2023.106445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/21/2023]
Abstract
Foliar fungal blast and bacterial leaf blight have significant impacts on rice production, and their management through host resistance and agrochemicals has proven inadequate. To achieve their sustainable management, innovative approaches like leveraging the foliar microbiome, which collaborates with plants and competes against pathogens, are essential. In our study, we isolated three Pantoea strains (P. agglomerans Os-Ep-PPA-1b, P. vagans Os-Ep-PPA-3b, and P. deleyi Os-Ep-VPA-9a) from the rice phylloplane. These isolates exhibited antimicrobial action through their metabolome and volatilome, while also promoting rice growth. Our analysis, using Gas Chromatography-Mass Spectrometry (GC-MS), revealed the presence of various antimicrobial compounds such as esters and fatty acids produced by these Pantoea isolates. Inoculating rice seedlings with P. agglomerans and P. vagans led to increased root and shoot growth. Additionally, bacterized seedlings displayed enhanced immunocompetence, as evidenced by upregulated expressions of defense genes (OsEDS1, OsFLS2, OsPDF2.2, OsACO4, OsICS OsPR1a, OsNPR1.3, OsPAD4, OsCERK1.1), along with heightened activities of defense enzymes like Polyphenol Oxidase and Peroxidase. These plants also exhibited elevated levels of total phenols. In field trials, the Pantoea isolates contributed to improved plant growth, exemplified by increased flag-leaf length, panicle number, and grains per panicle, while simultaneously reducing the incidence of chaffy grains. Hypersensitivity assays performed on a model plant, tobacco, confirmed the non-pathogenic nature of these Pantoea isolates. In summary, our study underscores the potential of Pantoea bacteria in combatting rice foliar diseases. Coupled with their remarkable growth-promoting and biostimulant capabilities, these findings position Pantoea as promising agents for enhancing rice cultivation.
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Affiliation(s)
- Charishma Krishnappa
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Alexander Balamurugan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Shanmugam Velmurugan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Shanu Kumar
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Vellaikumar Sampathrajan
- Agricultural College & Research Institute, Tamil Nadu Agricultural University, Madurai, 625104, India
| | - Aditi Kundu
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Mohammed Javed
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Vinod Chouhan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Prakash Ganesan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India
| | - Aundy Kumar
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110012, India.
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Ochatt SJ. Less Frequently Used Growth Regulators in Plant Tissue Culture. Methods Mol Biol 2024; 2827:109-143. [PMID: 38985266 DOI: 10.1007/978-1-0716-3954-2_8] [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] [Indexed: 07/11/2024]
Abstract
Plant growth regulators are routinely added to in vitro culture media to foster the growth and differentiation of the cells, tissues, and organs. However, while the literature on usage of the more common auxins, cytokinins, gibberellins, abscisic acid, and ethylene is vast, other compounds that also have shown a growth-regulating activity have not been studied as frequently. Such substances are also capable of modulating the responses of plant cells and tissues in vitro by regulating their growth, differentiation, and regeneration competence, but also by enhancing their responses toward biotic and abiotic stress agents and improving the production of secondary metabolites of interest. This chapter will discuss the in vitro effects of several of such less frequently added plant growth regulators, including brassinosteroids (BRS), strigolactones (SLs), phytosulfokines (PSKs), methyl jasmonate, salicylic acid (SA), sodium nitroprusside (SNP), hydrogen sulfite, various plant growth retardants and inhibitors (e.g., ancymidol, uniconazole, flurprimidol, paclobutrazol), and polyamines.
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Affiliation(s)
- Sergio J Ochatt
- Agroécologie, InstitutAgro Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France.
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Saha B, Nayak J, Srivastava R, Samal S, Kumar D, Chanwala J, Dey N, Giri MK. Unraveling the involvement of WRKY TFs in regulating plant disease defense signaling. PLANTA 2023; 259:7. [PMID: 38012461 DOI: 10.1007/s00425-023-04269-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/18/2023] [Indexed: 11/29/2023]
Abstract
MAIN CONCLUSION This review article explores the intricate role, regulation, and signaling mechanisms of WRKY TFs in response to biotic stress, particularly emphasizing their pivotal role in the trophism of plant-pathogen interactions. Transcription factors (TFs) play a vital role in governing both plant defense and development by controlling the expression of various downstream target genes. Early studies have shown the differential expression of certain WRKY transcription factors by microbial infections. Several transcriptome-wide studies later demonstrated that diverse sets of WRKYs are significantly activated in the early stages of viral, bacterial, and fungal infections. Furthermore, functional investigations indicated that overexpression or silencing of certain WRKY genes in plants can drastically alter disease symptoms as well as pathogen multiplication rates. Hence the new aspects of pathogen-triggered WRKY TFs mediated regulation of plant defense can be explored. The already recognized roles of WRKYs include transcriptional regulation of defense-related genes, modulation of hormonal signaling, and participation in signal transduction pathways. Some WRKYs have been shown to directly bind to pathogen effectors, acting as decoys or resistance proteins. Notably, the signaling molecules like salicylic acid, jasmonic acid, and ethylene which are associated with plant defense significantly increase the expression of several WRKYs. Moreover, induction of WRKY genes or heightened WRKY activities is also observed during ISR triggered by the beneficial microbes which protect the plants from subsequent pathogen infection. To understand the contribution of WRKY TFs towards disease resistance and their exact metabolic functions in infected plants, further studies are required. This review article explores the intrinsic transcriptional regulation, signaling mechanisms, and hormonal crosstalk governed by WRKY TFs in plant disease defense response, particularly emphasizing their specific role against different biotrophic, hemibiotrophic, and necrotrophic pathogen infections.
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Affiliation(s)
- Baisista Saha
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India
| | - Jagatjeet Nayak
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India
| | - Richa Srivastava
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Swarnmala Samal
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Deepak Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Jeky Chanwala
- Institute of Life Sciences, NALCO Nagar Road, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha, 751023, India
| | - Nrisingha Dey
- Institute of Life Sciences, NALCO Nagar Road, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha, 751023, India
| | - Mrunmay Kumar Giri
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, 751024, India.
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Jeyasri R, Muthuramalingam P, Karthick K, Shin H, Choi SH, Ramesh M. Methyl jasmonate and salicylic acid as powerful elicitors for enhancing the production of secondary metabolites in medicinal plants: an updated review. PLANT CELL, TISSUE AND ORGAN CULTURE 2023; 153:447-458. [PMID: 37197003 PMCID: PMC10026785 DOI: 10.1007/s11240-023-02485-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 03/03/2023] [Indexed: 05/19/2023]
Abstract
Plant secondary metabolites are bioactive scaffolds that are crucial for plant survival in the environment and to maintain a defense mechanism from predators. These compounds are generally present in plants at a minimal level and interestingly, they are found to have a wide variety of therapeutic values for humans. Several medicinal plants are used for pharmaceutical purposes due to their affordability, fewer adverse effects, and vital role in traditional remedies. Owing to this reason, these plants are exploited at a high range worldwide and therefore many medicinal plants are on the threatened list. There is a need of the hour to tackle this major problem, one effective approach called elicitation can be used to enhance the level of existing and novel plant bioactive compounds using different types of elicitors namely biotic and abiotic. This process can be generally achieved by in vitro and in vivo experiments. The current comprehensive review provides an overview of biotic and abiotic elicitation strategies used in medicinal plants, as well as their effects on secondary metabolites enhancement. Further, this review mainly deals with the enhancement of biomass and biosynthesis of different bioactive compounds by methyl jasmonate (MeJA) and salicylic acid (SA) as elicitors of wide medicinal plants in in vitro by using different cultures. The present review was suggested as a significant groundwork for peers working with medicinal plants by applying elicitation strategies along with advanced biotechnological approaches.
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Affiliation(s)
- Rajendran Jeyasri
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630 003 India
| | - Pandiyan Muthuramalingam
- Division of Horticultural Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, 52725 South Korea
- Agri-Food Bio Convergence Institute, Gyeongsang National University, Jinju, 52725 South Korea
| | - Kannan Karthick
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630 003 India
| | - Hyunsuk Shin
- Division of Horticultural Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, 52725 South Korea
- Agri-Food Bio Convergence Institute, Gyeongsang National University, Jinju, 52725 South Korea
| | - Sung Hwan Choi
- Division of Horticultural Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, 52725 South Korea
- Agri-Food Bio Convergence Institute, Gyeongsang National University, Jinju, 52725 South Korea
| | - Manikandan Ramesh
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630 003 India
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Khoso MA, Hussain A, Ritonga FN, Ali Q, Channa MM, Alshegaihi RM, Meng Q, Ali M, Zaman W, Brohi RD, Liu F, Manghwar H. WRKY transcription factors (TFs): Molecular switches to regulate drought, temperature, and salinity stresses in plants. FRONTIERS IN PLANT SCIENCE 2022; 13:1039329. [PMID: 36426143 PMCID: PMC9679293 DOI: 10.3389/fpls.2022.1039329] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/19/2022] [Indexed: 06/01/2023]
Abstract
The WRKY transcription factor (TF) belongs to one of the major plant protein superfamilies. The WRKY TF gene family plays an important role in the regulation of transcriptional reprogramming associated with plant stress responses. Change in the expression patterns of WRKY genes or the modifications in their action; participate in the elaboration of numerous signaling pathways and regulatory networks. WRKY proteins contribute to plant growth, for example, gamete formation, seed germination, post-germination growth, stem elongation, root hair growth, leaf senescence, flowering time, and plant height. Moreover, they play a key role in many types of environmental signals, including drought, temperature, salinity, cold, and biotic stresses. This review summarizes the current progress made in unraveling the functions of numerous WRKY TFs under drought, salinity, temperature, and cold stresses as well as their role in plant growth and development.
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Affiliation(s)
- Muneer Ahmed Khoso
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
- Department of Life Science, Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Amjad Hussain
- College of Plant Science and Technology, National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei, China
| | | | - Qurban Ali
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Education, Nanjing, China
| | | | - Rana M. Alshegaihi
- Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Qinglin Meng
- Department of Biology and Food Engineering, Bozhou University, Bozhou, China
| | - Musrat Ali
- Department of Plant Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad Pakistan, Islamabad, Pakistan
| | - Wajid Zaman
- Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea
| | - Rahim Dad Brohi
- Department of Animal Reproduction/Theriogenology, Faculty of Veterinary Science, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Pakistan
| | - Fen Liu
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
| | - Hakim Manghwar
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, Jiangxi, China
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Srivastava D, Verma G, Chawda K, Chauhan AS, Pande V, Chakrabarty D. Overexpression of Asr6, abscisic acid stress-ripening protein, enhances drought tolerance and modulates gene expression in rice (Oryza sativa L.). ENVIRONMENTAL AND EXPERIMENTAL BOTANY 2022; 202:105005. [DOI: 10.1016/j.envexpbot.2022.105005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
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Cheng Z, Luan Y, Meng J, Sun J, Tao J, Zhao D. WRKY Transcription Factor Response to High-Temperature Stress. PLANTS 2021; 10:plants10102211. [PMID: 34686020 PMCID: PMC8541500 DOI: 10.3390/plants10102211] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 11/16/2022]
Abstract
Plant growth and development are closely related to the environment, and high-temperature stress is an important environmental factor that affects these processes. WRKY transcription factors (TFs) play important roles in plant responses to high-temperature stress. WRKY TFs can bind to the W-box cis-acting elements of target gene promoters, thereby regulating the expression of multiple types of target genes and participating in multiple signaling pathways in plants. A number of studies have shown the important biological functions and working mechanisms of WRKY TFs in plant responses to high temperature. However, there are few reviews that summarize the research progress on this topic. To fully understand the role of WRKY TFs in the response to high temperature, this paper reviews the structure and regulatory mechanism of WRKY TFs, as well as the related signaling pathways that regulate plant growth under high-temperature stress, which have been described in recent years, and this paper provides references for the further exploration of the molecular mechanisms underlying plant tolerance to high temperature.
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Affiliation(s)
- Zhuoya Cheng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Z.C.); (J.M.); (J.S.); (J.T.)
| | - Yuting Luan
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China;
| | - Jiasong Meng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Z.C.); (J.M.); (J.S.); (J.T.)
| | - Jing Sun
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Z.C.); (J.M.); (J.S.); (J.T.)
| | - Jun Tao
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Z.C.); (J.M.); (J.S.); (J.T.)
| | - Daqiu Zhao
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Z.C.); (J.M.); (J.S.); (J.T.)
- Correspondence: ; Tel.: +86-514-87997219; Fax: +86-514-87347537
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Fan T, Lv T, Xie C, Zhou Y, Tian C. Genome-Wide Analysis of the IQM Gene Family in Rice ( Oryza sativa L.). PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10091949. [PMID: 34579481 PMCID: PMC8469326 DOI: 10.3390/plants10091949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/06/2021] [Accepted: 09/14/2021] [Indexed: 06/01/2023]
Abstract
Members of the IQM (IQ-Motif Containing) gene family are involved in plant growth and developmental processes, biotic and abiotic stress response. To systematically analyze the IQM gene family and their expression profiles under diverse biotic and abiotic stresses, we identified 8 IQM genes in the rice genome. In the current study, the whole genome identification and characterization of OsIQMs, including the gene and protein structure, genome localization, phylogenetic relationship, gene expression and yeast two-hybrid were performed. Eight IQM genes were classified into three subfamilies (I-III) according to the phylogenetic analysis. Gene structure and protein motif analyses showed that these IQM genes are relatively conserved within each subfamily of rice. The 8 OsIQM genes are distributed on seven out of the twelve chromosomes, with three IQM gene pairs involved in segmental duplication events. The evolutionary patterns analysis revealed that the IQM genes underwent a large-scale event within the last 20 to 9 million years. In addition, quantitative real-time PCR analysis of eight OsIQMs genes displayed different expression patterns at different developmental stages and in different tissues as well as showed that most IQM genes were responsive to PEG, NaCl, jasmonic acid (JA), abscisic acid (ABA) treatment, suggesting their crucial roles in biotic, and abiotic stress response. Additionally, a yeast two-hybrid assay showed that OsIQMs can interact with OsCaMs, and the IQ motif of OsIQMs is required for OsIQMs to combine with OsCaMs. Our results will be valuable to further characterize the important biological functions of rice IQM genes.
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Chen Y, Zhang H, Zhang M, Zhang W, Ou Z, Peng Z, Fu C, Zhao C, Yu L. Salicylic Acid-Responsive Factor TcWRKY33 Positively Regulates Taxol Biosynthesis in Taxus chinensis in Direct and Indirect Ways. FRONTIERS IN PLANT SCIENCE 2021; 12:697476. [PMID: 34434205 PMCID: PMC8381197 DOI: 10.3389/fpls.2021.697476] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/08/2021] [Indexed: 05/29/2023]
Abstract
Taxol is a rare secondary metabolite that accumulates considerably in Taxus species under salicylic acid (SA) and methyl jasmonate treatment. However, the molecular mechanism of its accumulation remains unclear. We investigated TcWRKY33, a nuclear-localized group I WRKY transcription factor, as an SA-responsive regulator of taxol biosynthesis. Overexpression and RNA interference of TcWRKY33 confirmed that TcWRKY33 regulates the expression of most taxol biosynthesis genes, especially 10-deacetylbaccatin III-10-O-acetyltransferase (DBAT) and taxadiene synthase (TASY), which were considered as key enzymes in taxol biosynthesis. Transient overexpression of TcWRKY33 in Taxus chinensis leaves resulted in increased taxol and 10-deacetylbaccatin accumulation by 1.20 and 2.16 times compared with the control, respectively. Furthermore, TcWRKY33, DBAT, and TASY were confirmed to respond positively to SA signals. These results suggested that TcWRKY33 was the missing component of taxol biosynthesis that responds to SA. The sequence analysis identified two W-box motifs in the promoter of DBAT but not in the TASY. Yeast one-hybrid and dual-luciferase activity assays confirmed that TcWRKY33 can bind to the two W-boxes in the promoter of DBAT, upregulating its expression level. Hence, DBAT is a direct target of TcWRKY33. Furthermore, TcERF15, encoding a TASY activator, also contains two W-boxes in its promoter. Yeast one-hybrid and dual-luciferase activity assays further confirmed that TcWRKY33 can upregulate TASY expression through the activation of TcERF15. In summary, TcWRKY33 transmits SA signals and positively regulates taxol biosynthesis genes in two ways: directly and through the activation of other activators. Therefore, TcWRKY33 is an excellent candidate for genetically engineering regulation of taxol biosynthesis in Taxus plants.
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Affiliation(s)
- Ying Chen
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Hua Zhang
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Meng Zhang
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Wenli Zhang
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Ziqi Ou
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Zehang Peng
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Chunhua Fu
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Chunfang Zhao
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
| | - Longjiang Yu
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Molecular Biophysics Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Engineering Research Center for Edible and Medicinal Resources, Wuhan, China
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12
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Hu B, Zhou Y, Zhou Z, Sun B, Zhou F, Yin C, Ma W, Chen H, Lin Y. Repressed OsMESL expression triggers reactive oxygen species-mediated broad-spectrum disease resistance in rice. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1511-1522. [PMID: 33567155 PMCID: PMC8384603 DOI: 10.1111/pbi.13566] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 02/04/2021] [Indexed: 05/03/2023]
Abstract
A few reports have indicated that a single gene confers resistance to bacterial blight, sheath blight and rice blast. In this study, we identified a novel disease resistance mutant gene, methyl esterase-like (osmesl) in rice. Mutant rice with T-DNA insertion displayed significant resistance to bacterial blight caused by Xanthomonas oryzae pv. oryzae (Xoo), sheath blight caused by Rhizoctonia solani and rice blast caused by Magnaporthe oryzae. Additionally, CRISPR-Cas9 knockout mutants and RNAi lines displayed resistance to these pathogens. Complementary T-DNA mutants demonstrated a phenotype similar to the wild type (WT), thereby indicating that osmesl confers resistance to pathogens. Protein interaction experiments revealed that OsMESL affects reactive oxygen species (ROS) accumulation by interacting with thioredoxin OsTrxm in rice. Moreover, qRT-PCR results showed significantly reduced mRNA levels of multiple ROS scavenging-related genes in osmesl mutants. Nitroblue tetrazolium staining showed that the pathogens cause ROS accumulation, and quantitative detection revealed significantly increased levels of H2 O2 in the leaves of osmesl mutants and RNAi lines after infection. The abundance of JA, a hormone associated with disease resistance, was significantly more in osmesl mutants than in WT plants. Overall, these results suggested that osmesl enhances disease resistance to Xoo, R. solani and M. oryzae by modulating the ROS balance.
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Affiliation(s)
- Bin Hu
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Yong Zhou
- College of Bioscience and BioengineeringJiangxi Agricultural UniversityNanchangChina
| | - Zaihui Zhou
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Bo Sun
- Wuhan Towin Biotechnology Company LimitedWuhanChina
| | - Fei Zhou
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Changxi Yin
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Weihua Ma
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Hao Chen
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
| | - Yongjun Lin
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan)Huazhong Agricultural UniversityWuhanChina
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13
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Viana VE, Carlos da Maia L, Busanello C, Pegoraro C, Costa de Oliveira A. When rice gets the chills: comparative transcriptome profiling at germination shows WRKY transcription factor responses. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23 Suppl 1:100-112. [PMID: 33773005 DOI: 10.1111/plb.13262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Rice is vital for food security. Due to its tropical origin, rice suffers from cold temperatures that affect its entire life cycle. Key genes have been identified involved in cold tolerance. WRKYs are generally downstream of the MAPK cascade and can act together with VQ proteins to regulate stress-responsive genes. Chilling treatment was applied at germination to two rice genotypes (tolerant and sensitive). Shoots at S3 stage were collected for RNA-seq to identify OsWRKY, OsMAPKs and OsVQs expression. Relationships among MAPKs, WRKYs and VQs were predicted through correlation analysis. OsWRKY transcriptional regulation was predicted by in silico analysis of cis-regulatory elements. A total of 39 OsWRKYs were differentially expressed. OsWRKY21, OsWRK24 and OsWRKY69 are potential positive regulators, while OsWRKY10, OsWRK47, OsWRKY62, OsWRKY72 and OsWRKY77 are potential negative regulators, of chilling tolerance. 12 OsMAPKs were differentially expressed. OsMAPKs were downregulated and negatively correlated with the upregulated OsWRKYs in the tolerant genotype. 19 OsVQs were differentially expressed, three and six OsVQs were positively correlated with OsWRKYs in the tolerant and sensitive genotypes, respectively. Seven differentially expressed OsWRKYs have cold-responsive elements in their promoters and five upregulated OsWRKYs in the tolerant genotype contained the W-box motif. Chilling causes changes in OsWRKY, OsMAPK and OsVQ gene expression at germination. OsWRKYs may not act downstream of the MAPK cascade to coordinate chilling tolerance, but OsWRKYs may act with VQs to regulate chilling tolerance. Candidate OsWRKYs are correlated and have a W-box in the promoter, suggesting an auto-regulation mechanism.
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Affiliation(s)
- V E Viana
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - L Carlos da Maia
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - C Busanello
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - C Pegoraro
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
| | - A Costa de Oliveira
- Plant Genomics and Breeding Center, Eliseu Maciel School of Agronomy, Federal University of Pelotas, Pelotas-RS, Brazil
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14
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Nishimura A, Yoshioka A, Kariya K, Ube N, Ueno K, Tebayashi SI, Osaki-Oka K, Ishihara A. Sugars in an aqueous extract of the spent substrate of the mushroom Hypsizygus marmoreus induce defense responses in rice. Biosci Biotechnol Biochem 2021; 85:743-755. [PMID: 33580659 DOI: 10.1093/bbb/zbaa122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/23/2020] [Indexed: 01/26/2023]
Abstract
Plant defense responses are activated by various exogenous stimuli. We found that an aqueous extract of spent mushroom substrate used for the cultivation of Hypsizygus marmoreus induced defense responses in rice. Fractionation of the spent mushroom substrate extract indicated that the compounds responsible for this induction were neutral and hydrophilic molecules with molecular weights lower than 3 kDa. Compounds with these characteristics, namely glucose, fructose, and sucrose, were detected in the extract at concentrations of 17.4, 3.3, and 1.6 mM, respectively, and the treatment of rice leaves with these sugars induced defense responses. Furthermore, microarray analysis indicated that the genes involved in defense responses were commonly activated by the treatment of leaves with spent mushroom substrate extract and glucose. These findings indicate that the induction of defense responses by treatment with spent mushroom substrate extract is, at least in part, attributable to the sugar constituents of the extract.
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Affiliation(s)
- Ayami Nishimura
- Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Anna Yoshioka
- Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Keisuke Kariya
- Graduate School of Sustainability Science, Tottori University, Tottori, Japan
| | - Naoki Ube
- Arid Land Research Center, Tottori University, Tottori, Japan
| | - Kotomi Ueno
- Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Shin-Ichi Tebayashi
- Faculty of Agriculture and Marine Science, Kochi University, 200B Monobe, Nankoku, Kochi, Japan
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15
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Song Y, Li J, Sui Y, Han G, Zhang Y, Guo S, Sui N. The sweet sorghum SbWRKY50 is negatively involved in salt response by regulating ion homeostasis. PLANT MOLECULAR BIOLOGY 2020; 102:603-614. [PMID: 32052233 DOI: 10.1007/s11103-020-00966-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 01/10/2020] [Indexed: 05/18/2023]
Abstract
The WRKY transcription factor family is involved in responding to biotic and abiotic stresses. Its members contain a typical WRKY domain and can regulate plant physiological responses by binding to W-boxes in the promoter regions of downstream target genes. We identified the sweet sorghum SbWRKY50 (Sb09g005700) gene, which encodes a typical class II of the WRKY family protein that localizes to the nucleus and has transcriptional activation activity. The expression of SbWRKY50 in sweet sorghum was reduced by salt stress, and its ectopic expression reduced the salt tolerance of Arabidopsis thaliana plants. Compared with the wild type, the germination rate, root length, biomass and potassium ion content of SbWRKY50 over-expression plants decreased significantly under salt-stress conditions, while the hydrogen peroxide, superoxide anion and sodium ion contents increased. Real-time PCR results showed that the expression levels of AtSOS1, AtHKT1 and genes related to osmotic and oxidative stresses in over-expression strains decreased under salt-stress conditions. Luciferase complementation imaging and yeast one-hybrid assays confirmed that SbWRKY50 could directly bind to the upstream promoter of the SOS1 gene in A. thaliana. However, in sweet sorghum, SbWRKY50 could directly bind to the upstream promoters of SOS1 and HKT1. These results suggest that the new WRKY transcription factor SbWRKY50 participates in plant salt response by controlling ion homeostasis. However, the regulatory mechanisms are different in sweet sorghum and Arabidopsis, which may explain their different salt tolerance levels. The data provide information that can be applied to genetically modifying salt tolerance in different crop varieties.
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Affiliation(s)
- Yushuang Song
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Jinlu Li
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Yi Sui
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Yi Zhang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Shangjing Guo
- College of Agronomy, Liaocheng University, Liaocheng, 252000, Shandong, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
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16
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Yu Y, Wan Y, Jiao Z, Bian L, Yu K, Zhang G, Guo D. Functional Characterization of Resistance to Powdery Mildew of VvTIFY9 from Vitis vinifera. Int J Mol Sci 2019; 20:ijms20174286. [PMID: 31480584 PMCID: PMC6747219 DOI: 10.3390/ijms20174286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/26/2019] [Accepted: 08/30/2019] [Indexed: 12/03/2022] Open
Abstract
Powdery mildew is a disease caused by fungal pathogens that harms grape leaves and fruits. The TIFY gene family is a plant-specific super-family involved in the process of plants’ development and their biotic and abiotic stress responses. This study aimed to learn the function of the VvTIFY9 gene to investigate molecular mechanisms of grape resistance to powdery mildew. A VvTIFY9 protein encoding a conserved motif (TIF[F/Y]XG) was characterized in grape (Vitis vinifera). Sequence analysis confirmed that VvTIFY9 contained this conserved motif (TIF[F/Y]XG). Quantitative PCR analysis of VvTIFY9 in various grape tissues demonstrated that the expression of VvTIFY9 was higher in grape leaves. VvTIFY9 was induced by salicylic acid (SA) and methyl jasmonate (MeJA) and it also quickly responded to infection with Erysiphe necator in grape. Analysis of the subcellular localization and transcriptional activation activity of VvTIFY9 showed that VvTIFY9 located to the nucleus and had transcriptional activity. Arabidopsis that overexpressed VvTIFY9 were more resistant to Golovinomyces cichoracearum, and quantitative PCR revealed that two defense-related genes, AtPR1 and AtPDF1.2, were up-regulated in the overexpressing lines. These results indicate that VvTIFY9 is intimately involved in SA-mediated resistance to grape powdery mildew. This study provides the basis for exploring the molecular mechanism of grape resistance to disease resistance and candidate genes for transgenic disease resistance breeding of grape plants.
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Affiliation(s)
- Yihe Yu
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Yutong Wan
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Zeling Jiao
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Lu Bian
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Keke Yu
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Guohai Zhang
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China
| | - Dalong Guo
- College of Forestry, Henan University of Science and Technology, Luoyang 471023, China.
- Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, Luoyang 471023, China.
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17
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Sun G, Feng C, Guo J, Zhang A, Xu Y, Wang Y, Day B, Ma Q. The tomato Arp2/3 complex is required for resistance to the powdery mildew fungus Oidium neolycopersici. PLANT, CELL & ENVIRONMENT 2019; 42:2664-2680. [PMID: 31038756 PMCID: PMC7747227 DOI: 10.1111/pce.13569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 05/04/2023]
Abstract
The actin-related protein 2/3 complex (Arp2/3 complex), a key regulator of actin cytoskeletal dynamics, has been linked to multiple cellular processes, including those associated with response to stress. Herein, the Solanum habrochaites ARPC3 gene, encoding a subunit protein of the Arp2/3 complex, was identified and characterized. ShARPC3 encodes a 174-amino acid protein possessing a conserved P21-Arc domain. Silencing of ShARPC3 resulted in enhanced susceptibility to the powdery mildew pathogen Oidium neolycopersici (On-Lz), demonstrating a role for ShARPC3 in defence signalling. Interestingly, a loss of ShARPC3 coincided with enhanced susceptibility to On-Lz, a process that we hypothesize is the result of a block in the activity of SA-mediated defence signalling. Conversely, overexpression of ShARPC3 in Arabidopsis thaliana, followed by inoculation with On-Lz, showed enhanced resistance, including the rapid induction of hypersensitive cell death and the generation of reactive oxygen. Heterologous expression of ShARPC3 in the arc18 mutant of Saccharomyces cerevisiae (i.e., ∆arc18) resulted in complementation of stress-induced phenotypes, including high-temperature tolerance. Taken together, these data support a role for ShARPC3 in tomato through positive regulation of plant immunity in response to O. neolycopersici pathogenesis.
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Affiliation(s)
- Guangzheng Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Chanjing Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Jia Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Ancheng Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Yuanliu Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Yang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Brad Day
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan
| | - Qing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
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18
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Ruan B, Hua Z, Zhao J, Zhang B, Ren D, Liu C, Yang S, Zhang A, Jiang H, Yu H, Hu J, Zhu L, Chen G, Shen L, Dong G, Zhang G, Zeng D, Guo L, Qian Q, Gao Z. OsACL-A2 negatively regulates cell death and disease resistance in rice. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1344-1356. [PMID: 30582769 PMCID: PMC6576086 DOI: 10.1111/pbi.13058] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 12/02/2018] [Accepted: 12/05/2018] [Indexed: 05/20/2023]
Abstract
ATP-citrate lyases (ACL) play critical roles in tumour cell propagation, foetal development and growth, and histone acetylation in human and animals. Here, we report a novel function of ACL in cell death-mediated pathogen defence responses in rice. Using ethyl methanesulphonate (EMS) mutagenesis and map-based cloning, we identified an Oryza sativa ACL-A2 mutant allele, termed spotted leaf 30-1 (spl30-1), in which an A-to-T transversion converts an Asn at position 343 to a Tyr (N343Y), causing a recessive mutation that led to a lesion mimic phenotype. Compared to wild-type plants, spl30-1 significantly reduces ACL enzymatic activity, accumulates high reactive oxygen species and increases degradation rate of nuclear deoxyribonucleic acids. CRISPR/Cas9-mediated insertion/deletion mutation analysis and complementation assay confirmed that the phenotype of spl30-1 resulted from the defective function of OsACL-A2 protein. We further biochemically identified that the N343Y mutation caused a significant degradation of SPL30N343Y in a ubiquitin-26S proteasome system (UPS)-dependent manner without alteration in transcripts of OsACL-A2 in spl30-1. Transcriptome analysis identified a number of up-regulated genes associated with pathogen defence responses in recessive mutants of OsACL-A2, implying its role in innate immunity. Suppressor mutant screen suggested that OsSL, which encodes a P450 monooxygenase protein, acted as a downstream key regulator in spl30-1-mediated pathogen defence responses. Taken together, our study discovered a novel role of OsACL-A2 in negatively regulating innate immune responses in rice.
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Affiliation(s)
- Banpu Ruan
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Zhihua Hua
- Department of Environmental and Plant BiologyInterdisciplinary Program in Molecular and Cellular BiologyOhio UniversityAthensOHUSA
| | - Juan Zhao
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Bin Zhang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Deyong Ren
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Chaolei Liu
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Shenglong Yang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Anpeng Zhang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Hongzhen Jiang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Haiping Yu
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Jiang Hu
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Li Zhu
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Guang Chen
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Lan Shen
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Guojun Dong
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Guangheng Zhang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Dali Zeng
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Longbiao Guo
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Qian Qian
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
| | - Zhenyu Gao
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhouZhejiangChina
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19
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Sun G, Yang Q, Zhang A, Guo J, Liu X, Wang Y, Ma Q. Synergistic effect of the combined bio-fungicides ε-poly-l-lysine and chitooligosaccharide in controlling grey mould (Botrytis cinerea) in tomatoes. Int J Food Microbiol 2018; 276:46-53. [PMID: 29656220 DOI: 10.1016/j.ijfoodmicro.2018.04.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/27/2018] [Accepted: 04/02/2018] [Indexed: 01/07/2023]
Abstract
The antifungal properties and the induction of resistance by ε-poly-l-lysine (ε-PL) and chitooligosaccharide (COS) were examined to find an alternative to synthetic fungicides currently used in the control of the devastating fungal pathogen Botrytis cinerea, the causal agent of grey mould disease of tomatoes. As presented herein, this combined treatment (200 mg/L ε-PL + 400 mg/L COS) was found to have optimal in vitro antifungal activities, achieving an inhibition rate of 90.22%. In vivo assays with these combined bio-fungicides, under greenhouse conditions using susceptible tomato plants, demonstrated good protection against severe grey mould. In field tests, the combined bio-fungicides had a control effect of up to 66.67% against tomato grey mould. To elucidate the mechanisms of the combined bio-fungicide-induced resistance in the tomato, plants were subjected to three treatments: 1) inoculation with B. cinerea after spraying with 200 mg/L ε-PL alone, 2) inoculation with the combined bio-fungicides, and 3) inoculation with 400 mg/L COS alone. Compared to the control (sterile water), increases in salicylic acid (SA) and jasmonic acid (JA) levels and increased phenylalanine ammonia lyase (PAL), peroxidase (POD), and superoxide dismutase (SOD) activities were observed. Catalase (CAT) activity and abscisic acid (ABA) and gibberellin (GA) levels decreased, particularly in the combined bio-fungicide-treated plants. Altogether, these findings reveal that the combined bio-fungicides (200 mg/L ε-PL + 400 mg/L COS) should be an excellent biocontrol agent candidate that combines direct antifungal activity against B. cinerea with plant resistance.
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Affiliation(s)
- Guangzheng Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qichao Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ancheng Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jia Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinjie Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Qing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Lee H, Cha J, Choi C, Choi N, Ji HS, Park SR, Lee S, Hwang DJ. Rice WRKY11 Plays a Role in Pathogen Defense and Drought Tolerance. RICE (NEW YORK, N.Y.) 2018; 11:5. [PMID: 29330772 PMCID: PMC5766476 DOI: 10.1186/s12284-018-0199-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/02/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Plants are frequently subjected to abiotic and biotic stresses, and WRKY proteins play a pivotal role in the response to such stress. OsWRKY11 is induced by pathogens, drought, and heat, suggesting a function in biotic and abiotic stress responses. RESULTS This study identified OsWRKY11, a member of WRKY group IIc. It is a transcriptional activator that localized to the nucleus. Ectopic expression of OsWRKY11 resulted in enhanced resistance to a bacterial pathogen, Xanthomonas oryzae pv. oryzae; resistance was compromised in transgenic lines under-expressing OsWRKY11. Ectopic expression of OsWRKY11 resulted in constitutive expression of defense-associated genes, whereas knock-down (kd) of OsWRKY11 reduced expression of defense-associated genes during pathogen attack, suggesting that OsWRKY11 activates defense responses. OsWRKY11 bound directly to the promoter of CHITINASE 2, a gene associated with defense, and activated its transcription. In addition, ectopic expression of OsWRKY11 enhanced tolerance to drought stress and induced constitutive expression of drought-responsive genes. Induction of drought-responsive genes was compromised in OsWRKY11-kd plants. OsWRKY11 also bound directly to the promoter of a drought-responsive gene, RAB21, activating its transcription. In addition, OsWRKY11 protein levels were controlled by the ubiquitin-proteasome system. CONCLUSION OsWRKY11 integrates plant responses to pathogens and abiotic stresses by positively modulating the expression of biotic and abiotic stress-related genes.
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Affiliation(s)
- Heyoung Lee
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Jooyoung Cha
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Changhyun Choi
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Naeyoung Choi
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Hyun-So Ji
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Sang Ryeol Park
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Seungbum Lee
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea
| | - Duk-Ju Hwang
- National Institute of Agricultural Sciences, Jeonju, 54874, Republic of Korea.
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Wang B, Wang N, Song N, Wang W, Wang J, Wang X, Kang Z. Overexpression of AtPAD4 in transgenic Brachypodium distachyon enhances resistance to Puccinia brachypodii. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:868-874. [PMID: 28836326 DOI: 10.1111/plb.12616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
Brachypodium distachyon (L.) has recently emerged as a model for temperate grasses for investigating the molecular basis of plant-pathogen interactions. Phytoalexin deficient 4 (PAD4) plays a regulatory role in mediating expression of genes involved in plant defence. In this research, we generated transgenic B. distachyon plants constitutively overexpressing AtPAD4. Two transgenic B. distachyon lines were verified using PCR and GUS phenotype. Constitutive expression of AtPAD4 in B. distachyon enhanced resistance to Puccinia brachypodii. P. brachypodii generated less urediniospores on transgenic than on wild-type plants. AtPAD4 overexpression enhanced salicylic acid (SA) levels in B. distachyon-infected tissues. qRT-PCR showed that expression of pathogenesis-related 1 (PR1) and other defence-related genes were up-regulated in transformed B. distachyon following infection with P. brachypodii. Our results indicate that AtPAD4 overexpression in B. distachyon plants led to SA accumulation and induced PR gene expression that reduced the rate of colonisation by P. brachypodii.
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Affiliation(s)
- B Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - N Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - N Song
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - W Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - J Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - Z Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
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Choi NY, Lee E, Lee SG, Choi CH, Park SR, Ahn I, Bae SC, Hwang CH, Hwang DJ. Genome-Wide Expression Profiling of OsWRKY Superfamily Genes during Infection with Xanthomonas oryzae pv. oryzae Using Real-Time PCR. FRONTIERS IN PLANT SCIENCE 2017; 8:1628. [PMID: 28979285 PMCID: PMC5611491 DOI: 10.3389/fpls.2017.01628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 09/05/2017] [Indexed: 05/28/2023]
Abstract
WRKY transcription factors (TFs) are involved in regulating a range of biological processes such as growth, development, and the responses to biotic and abiotic stresses. Genome-wide expression profiling of OsWRKY TF superfamily genes in rice after infection with Xanthomonas oryzae pv. oryzae (Xoo) was performed to elucidate the function of OsWRKY TFs in the interaction between rice and Xoo. Of the 111 OsWRKY TF genes tested, the transcription of 94 genes changed after Xoo infection. The OsWRKY TF genes were classified into eight types according to their expression profiles. Eighty-two genes in Groups I, II, III, IV, VII were up-regulated after exposure to a compatible or an incompatible race of Xoo. Examination of salicylic acid (SA)-deficient rice lines revealed that SA was involved in Xa1-mediated resistance to Xoo infection. OsWRKY TF genes involved in Xa1-mediated resistance were classified according to their SA-dependent or -independent expression. In SA-deficient rice, the expression of 12 of 57 OsWRKY TF genes involved in Xa1-mediated resistance was compromised. Of these six OsWRKY TF genes were induced by SA. OsWRKY88, an example of a gene possibly involved in SA-dependent Xa1-mediated resistance, activated defense related genes and increased resistance to Xoo. Thus, expression profiling of OsWRKY TF genes may help predict the functions of OsWRKY TF genes involved in Xa1-mediated resistance.
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Affiliation(s)
- Nae Young Choi
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
- Department of Crop Science and Biotechnology, Dankook UniversityCheonan, South Korea
| | - Eunhye Lee
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Sang Gu Lee
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Chang Hyun Choi
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Sang Ryeol Park
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Ilpyung Ahn
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Shin Chul Bae
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
| | - Cheol Ho Hwang
- Department of Crop Science and Biotechnology, Dankook UniversityCheonan, South Korea
| | - Duk-Ju Hwang
- National Institute of Agricultural Science, Rural Development AdministrationJeonju, South Korea
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Wang J, Islam F, Li L, Long M, Yang C, Jin X, Ali B, Mao B, Zhou W. Complementary RNA-Sequencing Based Transcriptomics and iTRAQ Proteomics Reveal the Mechanism of the Alleviation of Quinclorac Stress by Salicylic Acid in Oryza sativa ssp. japonica. Int J Mol Sci 2017; 18:ijms18091975. [PMID: 28906478 PMCID: PMC5618624 DOI: 10.3390/ijms18091975] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 09/08/2017] [Accepted: 09/12/2017] [Indexed: 12/16/2022] Open
Abstract
To uncover the alleviation mechanism of quinclorac stress by salicylic acid (SA), leaf samples of Oryza sativa ssp. Japonica under quinclorac stress with and without SA pre-treatment were analyzed for transcriptional and proteomic profiling to determine the differentially expressed genes (DEGs) and proteins (DEPs), respectively. Results showed that quinclorac stress altered the expression of 2207 DEGs (1427 up-regulated, 780 down-regulated) and 147 DEPs (98 down-regulated, 49 up-regulated). These genes and proteins were enriched in glutathione (GSH) metabolism, porphyrin and chlorophyll metabolism, the biosynthesis of secondary metabolites, glyoxylate and dicarboxylate metabolism, and so on. It also influenced apetala2- ethylene-responsive element binding protein (AP2-EREBP) family, myeloblastosis (MYB) family and WRKY family transcription factors. After SA pre-treatment, 697 genes and 124 proteins were differentially expressed. Pathway analysis showed similar enrichments in GSH, glyoxylate and dicarboxylate metabolism. Transcription factors were distributed in basic helix-loop-helix (bHLH), MYB, Tify and WRKY families. Quantitative real-time PCR results revealed that quinclorac stress induced the expression of glutathion reductase (GR) genes (OsGR2, OsGR3), which was further pronounced by SA pre-treatment. Quinclorac stress further mediated the accumulation of acetaldehyde in rice, while SA enhanced the expression of OsALDH2B5 and OsALDH7 to accelerate the metabolism of herbicide quinclorac for the protection of rice. Correlation analysis between transcriptome and proteomics demonstrated that, under quinclorac stress, correlated proteins/genes were mainly involved in the inhibition of intermediate steps in the biosynthesis of chlorophyll. Other interesting proteins/genes and pathways regulated by herbicide quinclorac and modulated by SA pre-treatment were also discussed, based on the transcriptome and proteomics results.
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Affiliation(s)
- Jian Wang
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Faisal Islam
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Lan Li
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Meijuan Long
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Chong Yang
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Xiaoli Jin
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
| | - Basharat Ali
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
- Institute of Crop Science and Resource Conservation (INRES), Abiotic Stress Tolerance in Crops, University of Bonn, 53115 Bonn, Germany.
| | - Bizeng Mao
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
| | - Weijun Zhou
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou 310058, China.
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Ma Y, Zhao Y, Shangguan X, Shi S, Zeng Y, Wu Y, Chen R, You A, Zhu L, Du B, He G. Overexpression of OsRRK1 Changes Leaf Morphology and Defense to Insect in Rice. FRONTIERS IN PLANT SCIENCE 2017; 8:1783. [PMID: 29114253 PMCID: PMC5660730 DOI: 10.3389/fpls.2017.01783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 10/02/2017] [Indexed: 05/20/2023]
Abstract
It has been reported that the receptor-like cytoplasmic kinases (RLCKs) regulate many biological processes in plants, but only a few members have been functionally characterized. Here, we isolated a rice gene encoding AtRRK1 homology protein kinase, OsRRK1, which belongs to the RLCK VI subfamily. OsRRK1 transcript accumulated in many tissues at low to moderate levels and at high levels in leaves. Overexpression of OsRRK1 (OE-OsRRK1) caused adaxial rolling and erect morphology of rice leaves. In the rolled leaves of OE-OsRRK1 plants, both the number and the size of the bulliform cells are decreased compared to the wild-type (WT) plants. Moreover, the height, tiller number, and seed setting rate were reduced in OE-OsRRK1 plants. In addition, the brown planthopper (BPH), a devastating pest of rice, preferred to settle on WT plants than on the OE-OsRRK1 plants in a two-host choice test, indicating that OE-OsRRK1 conferred an antixenosis resistance to BPH. The analysis of transcriptome sequencing demonstrated that several receptor kinases and transcription factors were differentially expressed in OE-OsRRK1 plants and WT plants. These results indicated that OsRRK1 may play multiple roles in the development and defense of rice, which may facilitate the breeding of novel rice varieties.
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Affiliation(s)
- Yinhua Ma
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Yan Zhao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Xinxin Shangguan
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Shaojie Shi
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Ya Zeng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Yan Wu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Rongzhi Chen
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Aiqing You
- Hybrid Rice Research Center, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Lili Zhu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Bo Du
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
- *Correspondence: Guangcun He, Bo Du,
| | - Guangcun He
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
- *Correspondence: Guangcun He, Bo Du,
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Chen H, Li C, Liu L, Zhao J, Cheng X, Jiang G, Zhai W. The Fd-GOGAT1 mutant gene lc7 confers resistance to Xanthomonas oryzae pv. Oryzae in rice. Sci Rep 2016; 6:26411. [PMID: 27211925 PMCID: PMC4876388 DOI: 10.1038/srep26411] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 05/03/2016] [Indexed: 01/01/2023] Open
Abstract
Disease resistance is an important goal of crop improvement. The molecular mechanism of resistance requires further study. Here, we report the identification of a rice leaf color mutant, lc7, which is defective in chlorophyll synthesis and photosynthesis but confers resistance to Xanthomonas oryzae pv. Oryzae (Xoo). Map-based cloning revealed that lc7 encodes a mutant ferredoxin-dependent glutamate synthase1 (Fd-GOGAT1). Fd-GOGAT1 has been proposed to have great potential for improving nitrogen-use efficiency, but its function in bacterial resistance has not been reported. The lc7 mutant accumulates excessive levels of ROS (reactive oxygen species) in the leaves, causing the leaf color to become yellow after the four-leaf stage. Compared to the wild type, lc7 mutants have a broad-spectrum high resistance to seven Xoo strains. Differentially expressed genes (DEGs) and qRT-PCR analysis indicate that many defense pathways that are involved in this broad-spectrum resistance are activated in the lc7 mutant. These results suggest that Fd-GOGAT1 plays an important role in broad-spectrum bacterial blight resistance, in addition to modulating nitrogen assimilation and chloroplast development.
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Affiliation(s)
- Honglin Chen
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.,National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chunrong Li
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Liping Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jiying Zhao
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xuzhen Cheng
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guanghuai Jiang
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wenxue Zhai
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
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Transcriptome-wide identification and expression profiles of the WRKY transcription factor family in Broomcorn millet (Panicum miliaceum L.). BMC Genomics 2016; 17:343. [PMID: 27165545 PMCID: PMC4862231 DOI: 10.1186/s12864-016-2677-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 04/25/2016] [Indexed: 11/17/2022] Open
Abstract
Background WRKY genes, as the most pivotal transcription factors in plants, play the indispensable roles in regulating various physiological processes, including plant growth and development as well as in response to stresses. Broomcorn millet is one of the most important crops in drought areas worldwide. However, the WRKY gene family in broomcorn millet remains unknown. Results A total of 32 PmWRKY genes were identified in this study using computational prediction method. Structural analysis found that PmWRKY proteins contained a highly conserved motif WRKYGQK and two common variant motifs, namely WRKYGKK and WRKYGEK. Phylogenetic analysis of PmWRKYs together with the homologous genes from the representative species could classify them into three groups, with the number of 1, 15, and 16, respectively. Finally, the transcriptional profiles of these 32 PmWRKY genes in various tissues or under different abiotic stresses were systematically investigated using qRT-PCR analysis. Results showed that the expression level of 22 PmWRKY genes varied significantly under one or more abiotic stress treatments, which could be defined as abiotic stress-responsive genes. Conclusions This was the first study to identify the organization and transcriptional profiles of PmWRKY genes, which not only facilitates the functional analysis of the PmWRKY genes, and also lays the foundation to reveal the molecular mechanism of stress tolerance in this important crop. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2677-3) contains supplementary material, which is available to authorized users.
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PtrWRKY19, a novel WRKY transcription factor, contributes to the regulation of pith secondary wall formation in Populus trichocarpa. Sci Rep 2016; 6:18643. [PMID: 26819184 PMCID: PMC4730198 DOI: 10.1038/srep18643] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/23/2015] [Indexed: 11/08/2022] Open
Abstract
WRKY proteins are one of the largest transcription factor families in higher plants and play diverse roles in various biological processes. Previous studies have shown that some WRKY members act as negative regulators of secondary cell wall formation in pith parenchyma cells. However, the regulatory mechanism of pith secondary wall formation in tree species remains largely unknown. In this study, PtrWRKY19 encoding a homolog of Arabidopsis WRKY12 was isolated from Populus trichocarpa. PtrWRKY19 was expressed in all tissues tested, with highest expression in stems, especially in pith. PtrWRKY19 was located in the nucleus and functioned as a transcriptional repressor. Ectopic expression of PtrWRKY19 in an atwrky12 mutant successfully rescued the phenotype in pith cell walls caused by the defect of AtWRKY12, suggesting that PtrWRKY19 had conserved functions for homologous AtWRKY12. Overexpression of PtrWRKY19 in poplar plants led to a significant increase in the number of pith parenchyma cells. qRT-PCR analysis showed that lignin biosynthesis-related genes were repressed in transgenic plants. In transcient reporter assays, PtrWRKY19 was identified to repress transcription from the PtoC4H2 promoter containing the conserved W-box elements. These results indicated that PtrWRKY19 may function as a negative regulator of pith secondary wall formation in poplar.
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In silico analysis of the genes encoding proteins that are involved in the biosynthesis of the RMS/MAX/D pathway revealed new roles of Strigolactones in plants. Int J Mol Sci 2015; 16:6757-82. [PMID: 25815594 PMCID: PMC4424986 DOI: 10.3390/ijms16046757] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 03/23/2015] [Indexed: 01/10/2023] Open
Abstract
Strigolactones were described as a new group of phytohormones in 2008 and since then notable large number of their functions has been uncovered, including the regulation of plant growth and development, interactions with other organisms and a plant’s response to different abiotic stresses. In the last year, investigations of the strigolactone biosynthesis pathway in two model species, Arabidopsis thaliana and Oryza sativa, resulted in great progress in understanding the functions of four enzymes that are involved in this process. We performed in silico analyses, including the identification of the cis-regulatory elements in the promoters of genes encoding proteins of the strigolactone biosynthesis pathway and the identification of the miRNAs that are able to regulate their posttranscriptional level. We also searched the databases that contain the microarray data for the genes that were analyzed from both species in order to check their expression level under different growth conditions. The results that were obtained indicate that there are universal regulations of expression of all of the genes that are involved in the strigolactone biosynthesis in Arabidopsis and rice, but on the other hand each stage of strigolactone production may be additionally regulated independently. This work indicates the presence of crosstalk between strigolactones and almost all of the other phytohormones and suggests the role of strigolactones in the response to abiotic stresses, such as wounding, cold or flooding, as well as in the response to biotic stresses.
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WRKY proteins: signaling and regulation of expression during abiotic stress responses. ScientificWorldJournal 2015; 2015:807560. [PMID: 25879071 PMCID: PMC4387944 DOI: 10.1155/2015/807560] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 03/03/2015] [Accepted: 03/07/2015] [Indexed: 02/03/2023] Open
Abstract
WRKY proteins are emerging players in plant signaling and have been thoroughly reported to play important roles in plants under biotic stress like pathogen attack. However, recent advances in this field do reveal the enormous significance of these proteins in eliciting responses induced by abiotic stresses. WRKY proteins act as major transcription factors, either as positive or negative regulators. Specific WRKY factors which help in the expression of a cluster of stress-responsive genes are being targeted and genetically modified to induce improved abiotic stress tolerance in plants. The knowledge regarding the signaling cascade leading to the activation of the WRKY proteins, their interaction with other proteins of the signaling pathway, and the downstream genes activated by them are altogether vital for justified targeting of the WRKY genes. WRKY proteins have also been considered to generate tolerance against multiple abiotic stresses with possible roles in mediating a cross talk between abiotic and biotic stress responses. In this review, we have reckoned the diverse signaling pattern and biological functions of WRKY proteins throughout the plant kingdom along with the growing prospects in this field of research.
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30
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Yokotani N, Tsuchida-Mayama T, Ichikawa H, Mitsuda N, Ohme-Takagi M, Kaku H, Minami E, Nishizawa Y. OsNAC111, a blast disease-responsive transcription factor in rice, positively regulates the expression of defense-related genes. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2014; 27:1027-34. [PMID: 25014590 DOI: 10.1094/mpmi-03-14-0065-r] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Plants respond to pathogen attack by transcriptionally regulating defense-related genes via various types of transcription factors. We identified a transcription factor in rice, OsNAC111, belonging to the TERN subgroup of the NAC family that was transcriptionally upregulated after rice blast fungus (Magnaporthe oryzae) inoculation. OsNAC111 was localized in the nucleus of rice cells and had transcriptional activation activity in yeast and rice cells. Transgenic rice plants overexpressing OsNAC111 showed increased resistance to the rice blast fungus. In OsNAC111-overexpressing plants, the expression of several defense-related genes, including pathogenesis-related (PR) genes, was constitutively high compared with the control. These genes all showed blast disease-responsive expression in leaves. Among them, two chitinase genes and one β-1,3-glucanase gene showed reduced expression in transgenic rice plants in which OsNAC111 function was suppressed by a chimeric repressor (OsNAC111-SRDX). OsNAC111 activated transcription from the promoters of the chitinase and β-1,3-glucanase genes in rice cells. In addition, brown pigmentation at the infection sites, a defense response of rice cells to the blast fungus, was lowered in OsNAC111-SRDX plants at the early infection stage. These results indicate that OsNAC111 positively regulates the expression of a specific set of PR genes in the disease response and contributes to disease resistance.
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Kim HS, Park YH, Nam H, Lee YM, Song K, Choi C, Ahn I, Park SR, Lee YH, Hwang DJ. Overexpression of the Brassica rapa transcription factor WRKY12 results in reduced soft rot symptoms caused by Pectobacterium carotovorum in Arabidopsis and Chinese cabbage. PLANT BIOLOGY (STUTTGART, GERMANY) 2014; 16:973-981. [PMID: 24552622 DOI: 10.1111/plb.12149] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 12/03/2013] [Indexed: 06/03/2023]
Abstract
Chinese cabbage (Brassica rapa L. ssp. pekinensis), an important vegetable crop, can succumb to diseases such as bacterial soft rot, resulting in significant loss of crop productivity and quality. Pectobacterium carotovorum ssp. carotovorum (Pcc) causes soft rot disease in various plants, including Chinese cabbage. To overcome crop loss caused by bacterial soft rot, a gene from Chinese cabbage was isolated and characterised in this study. We isolated the BrWRKY12 gene from Chinese cabbage, which is a group II member of the WRKY transcription factor superfamily. The 645-bp coding sequence of BrWRKY12 translates to a protein with a molecular mass of approximately 24.4 kDa, and BrWRKY12 was exclusively localised in the nucleus. Transcripts of BrWRKY12 were induced by Pcc infection in Brassica. Heterologous expression of BrWRKY12 resulted in reduced susceptibility to Pcc but not to Pseudomonas syringae pv. tomato in Arabidopsis. Defence-associated genes, such as AtPDF1.2 and AtPGIP2, were constitutively expressed in transgenic lines overexpressing BrWRKY12. The expression of AtWKRY12, which is the closest orthologue of BrWRKY12, was down-regulated by Pcc in Arabidopsis. However, the Atwrky12-2 mutants did not show any difference in response to Pcc, pointing to a difference in function of WRKY12 in Brassica and Arabidopsis. Furthermore, BrWRKY12 in Chinese cabbage also exhibited enhanced resistance to bacterial soft rot and increased the expression of defence-associated genes. In summary, BrWRKY12 confers enhanced resistance to Pcc through transcriptional activation of defence-related genes.
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Affiliation(s)
- H S Kim
- National Academy of Agricultural Science, Rural Development Administration, Suwon, South Korea
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