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Spoel SH, Dong X. Salicylic acid in plant immunity and beyond. THE PLANT CELL 2024; 36:1451-1464. [PMID: 38163634 PMCID: PMC11062473 DOI: 10.1093/plcell/koad329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/06/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
As the most widely used herbal medicine in human history and a major defence hormone in plants against a broad spectrum of pathogens and abiotic stresses, salicylic acid (SA) has attracted major research interest. With applications of modern technologies over the past 30 years, studies of the effects of SA on plant growth, development, and defence have revealed many new research frontiers and continue to deliver surprises. In this review, we provide an update on recent advances in our understanding of SA metabolism, perception, and signal transduction mechanisms in plant immunity. An overarching theme emerges that SA executes its many functions through intricate regulation at multiple steps: SA biosynthesis is regulated both locally and systemically, while its perception occurs through multiple cellular targets, including metabolic enzymes, redox regulators, transcription cofactors, and, most recently, an RNA-binding protein. Moreover, SA orchestrates a complex series of post-translational modifications of downstream signaling components and promotes the formation of biomolecular condensates that function as cellular signalling hubs. SA also impacts wider cellular functions through crosstalk with other plant hormones. Looking into the future, we propose new areas for exploration of SA functions, which will undoubtedly uncover more surprises for many years to come.
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Affiliation(s)
- Steven H Spoel
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, The King's Buildings, Edinburgh EH9 3BF, UK
| | - Xinnian Dong
- Department of Biology, Howard Hughes Medical Institute, Duke University, Durham, NC 27708, USA
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2
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Zhang H, Liu M, Yin K, Liu H, Liu J, Yan Z. A novel OsHB5-OsAPL-OsMADS27/OsWRKY102 regulatory module regulates grain size in rice. JOURNAL OF PLANT PHYSIOLOGY 2024; 295:154210. [PMID: 38460401 DOI: 10.1016/j.jplph.2024.154210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/17/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
Grain size, a crucial trait that determines rice yield and quality, is typically regulated by multiple genes. Although numerous genes controlling grain size have been identified, the precise and dynamic regulatory network governing grain size is still not fully understood. In this study, we unveiled a novel regulatory module composed of OsHB5, OsAPL and OsMADS27/OsWRKY102, which plays a crucial role in modulating grain size in rice. As a positive regulator of grain size, OsAPL has been found to interact with OsHB5 both in vitro and in vivo. Through chromatin immunoprecipitation-sequencing, we successfully mapped two potential targets of OsAPL, namely OsMADS27, a positive regulator in grain size and OsWRKY102, a negative regulator in lignification that is also associated with grain size control. Further evidence from EMSA and chromatin immunoprecipitation-quantitative PCR experiments has shown that OsAPL acts as an upstream transcription factor that directly binds to the promoters of OsMADS27 and OsWRKY102. Moreover, EMSA and dual-luciferase reporter assays have indicated that the interaction between OsAPL and OsHB5 enhances the repressive effect of OsAPL on OsMADS27 and OsWRKY102. Collectively, our findings discovered a novel regulatory module, OsHB5-OsAPL-OsMADS27/OsWRKY102, which plays a significant role in controlling grain size in rice. These discoveries provide potential targets for breeding high-yield and high-quality rice varieties.
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Affiliation(s)
- Han Zhang
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Meng Liu
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Kangqun Yin
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Huanhuan Liu
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China; National Demonstration Center for Experimental Biology Education (Sichuan University), Chengdu, 610064, China
| | - Jianquan Liu
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China; State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems and College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Zhen Yan
- Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China; National Demonstration Center for Experimental Biology Education (Sichuan University), Chengdu, 610064, China.
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3
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Huang X, Yang S, Zhang Y, Shi Y, Shen L, Zhang Q, Qiu A, Guan D, He S. Temperature-dependent action of pepper mildew resistance locus O 1 in inducing pathogen immunity and thermotolerance. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2064-2083. [PMID: 38011680 DOI: 10.1093/jxb/erad479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/25/2023] [Indexed: 11/29/2023]
Abstract
Plant diseases tend to be more serious under conditions of high-temperature/high-humidity (HTHH) than under moderate conditions, and hence disease resistance under HTHH is an important determinant for plant survival. However, how plants cope with diseases under HTHH remains poorly understood. In this study, we used the pathosystem consisting of pepper (Capsicum annuum) and Ralstonia solanacearum (bacterial wilt) as a model to examine the functions of the protein mildew resistance locus O 1 (CaMLO1) and U-box domain-containing protein 21 (CaPUB21) under conditions of 80% humidity and either 28 °C or 37 °C. Expression profiling, loss- and gain-of-function assays involving virus-induced gene-silencing and overexpression in pepper plants, and protein-protein interaction assays were conducted, and the results showed that CaMLO1 acted negatively in pepper immunity against R. solanacearum at 28 °C but positively at 37 °C. In contrast, CaPUB21 acted positively in immunity at 28 °C but negatively at 37 °C. Importantly, CaPUB21 interacted with CaMLO1 under all of the tested conditions, but only the interaction in response to R. solanacearum at 37 °C or to exposure to 37 °C alone led to CaMLO1 degradation, thereby turning off defence responses against R. solanacearum at 37 °C and under high-temperature stress to conserve resources. Thus, we show that CaMLO1 and CaPUB21 interact with each other and function distinctly in pepper immunity against R. solanacearum in an environment-dependent manner.
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Affiliation(s)
- Xueying Huang
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Sheng Yang
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yapeng Zhang
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Yuanyuan Shi
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Lei Shen
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China
| | - Qixiong Zhang
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Ailian Qiu
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Deyi Guan
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Shuilin He
- National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
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Yao L, Jiang Z, Wang Y, Hu Y, Hao G, Zhong W, Wan S, Xin X. High air humidity dampens salicylic acid pathway and NPR1 function to promote plant disease. EMBO J 2023; 42:e113499. [PMID: 37728254 PMCID: PMC10620762 DOI: 10.15252/embj.2023113499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 09/21/2023] Open
Abstract
The occurrence of plant disease is determined by interactions among host, pathogen, and environment. Air humidity shapes various aspects of plant physiology and high humidity has long been known to promote numerous phyllosphere diseases. However, the molecular basis of how high humidity interferes with plant immunity to favor disease has remained elusive. Here we show that high humidity is associated with an "immuno-compromised" status in Arabidopsis plants. Furthermore, accumulation and signaling of salicylic acid (SA), an important defense hormone, are significantly inhibited under high humidity. NPR1, an SA receptor and central transcriptional co-activator of SA-responsive genes, is less ubiquitinated and displays a lower promoter binding affinity under high humidity. The cellular ubiquitination machinery, particularly the Cullin 3-based E3 ubiquitin ligase mediating NPR1 protein ubiquitination, is downregulated under high humidity. Importantly, under low humidity the Cullin 3a/b mutant plants phenocopy the low SA gene expression and disease susceptibility that is normally observed under high humidity. Our study uncovers a mechanism by which high humidity dampens a major plant defense pathway and provides new insights into the long-observed air humidity influence on diseases.
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Affiliation(s)
- Lingya Yao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Zeyu Jiang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Yiping Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Yezhou Hu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Guodong Hao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Weili Zhong
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Shiwei Wan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Xiu‐Fang Xin
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
- Chinese Academy of Sciences (CAS) and CAS John Innes Centre of Excellence for Plant and Microbial SciencesShanghaiChina
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Wang W, Chen K, Chen N, Gao J, Zhang W, Gong J, Tong S, Chen Y, Li Y, Feng Y, Jiang Y, Ma T. Chromatin accessibility dynamics insight into crosstalk between regulatory landscapes in poplar responses to multiple treatments. TREE PHYSIOLOGY 2023; 43:1023-1041. [PMID: 36851850 DOI: 10.1093/treephys/tpad023] [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: 12/09/2022] [Accepted: 01/22/2023] [Indexed: 06/11/2023]
Abstract
Perennial trees develop and coordinate endogenous response signaling pathways, including their crosstalk and convergence, to cope with various environmental stresses which occur simultaneously in most cases. These processes are involved in gene transcriptional regulations that depend on dynamic interactions between regulatory proteins and corresponding chromatin regions, but the mechanisms remain poorly understood in trees. In this study, we detected chromatin regulatory landscapes of poplar under abscisic acid, methyl jasmonate, salicylic acid and sodium chloride (NaCl) treatment, through integrating ATAC-seq and RNA-seq data. Our results showed that the degree of chromatin accessibility for a given gene is closely related to its expression level. However, unlike the gene expression that shows treatment-specific response patterns, changes in chromatin accessibility exhibit high similarities under these treatments. We further proposed and experimentally validated that a homologous gene copy of RESPONSIVE TO DESICCATION 26 mediates the crosstalk between jasmonic acid and NaCl signaling pathways by directly regulating the stress-responsive genes and that circadian clock-related transcription factors like REVEILLE8 play a central role in response of poplar to these treatments. Overall, our study provides a chromatin insight into the molecular mechanism of transcription regulatory networks in response to different environmental stresses and raises the key roles of the circadian clock of poplar to adapt to adverse environments.
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Affiliation(s)
- Weiwei Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Kai Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Ningning Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Jinwen Gao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Wenyan Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Jue Gong
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Shaofei Tong
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Yang Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Yiling Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Yanlin Feng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Yuanzhong Jiang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Tao Ma
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
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Ahn G, Park HJ, Jeong SY, Shin GI, Ji MG, Cha JY, Kim J, Kim MG, Yun DJ, Kim WY. HOS15 represses flowering by promoting GIGANTEA degradation in response to low temperature in Arabidopsis. PLANT COMMUNICATIONS 2023:100570. [PMID: 36864727 PMCID: PMC10363504 DOI: 10.1016/j.xplc.2023.100570] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/13/2023] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Flowering is the primary stage of the plant developmental transition and is tightly regulated by environmental factors such as light and temperature. However, the mechanisms by which temperature signals are integrated into the photoperiodic flowering pathway are still poorly understood. Here, we demonstrate that HOS15, which is known as a GI transcriptional repressor in the photoperiodic flowering pathway, controls flowering time in response to low ambient temperature. At 16°C, the hos15 mutant exhibits an early flowering phenotype, and HOS15 acts upstream of photoperiodic flowering genes (GI, CO, and FT). GI protein abundance is increased in the hos15 mutant and is insensitive to the proteasome inhibitor MG132. Furthermore, the hos15 mutant has a defect in low ambient temperature-mediated GI degradation, and HOS15 interacts with COP1, an E3 ubiquitin ligase for GI degradation. Phenotypic analyses of the hos15 cop1 double mutant revealed that repression of flowering by HOS15 is dependent on COP1 at 16°C. However, the HOS15-COP1 interaction was attenuated at 16°C, and GI protein abundance was additively increased in the hos15 cop1 double mutant, indicating that HOS15 acts independently of COP1 in GI turnover at low ambient temperature. This study proposes that HOS15 controls GI abundance through multiple modes as an E3 ubiquitin ligase and transcriptional repressor to coordinate appropriate flowering time in response to ambient environmental conditions such as temperature and day length.
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Affiliation(s)
- Gyeongik Ahn
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hee Jin Park
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Song Yi Jeong
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Gyeong-Im Shin
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Myung Geun Ji
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jeongsik Kim
- Faculty of Science Education and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dae-Jin Yun
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea; Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Woe-Yeon Kim
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea.
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Huang LJ, Wang Y, Lin Z, Jiang D, Luo Y, Li N. The role of corepressor HOS15-mediated epigenetic regulation of flowering. FRONTIERS IN PLANT SCIENCE 2023; 13:1101912. [PMID: 36704168 PMCID: PMC9871556 DOI: 10.3389/fpls.2022.1101912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 12/21/2022] [Indexed: 06/18/2023]
Abstract
Regulation of gene expression underpins gene function and is essential for regulation of physiological roles. Epigenetic modifications regulate gene transcription by physically facilitating relaxation or condensation of target loci in chromatin. Transcriptional corepressors are involved in chromatin remodeling and regulate gene expression by establishing repressive complexes. Genetic and biochemical studies reveal that a member of the Groucho/Thymidine uptake 1 (Gro/Tup1) corepressor family, HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE 15 (HOS15), is recruited via the evening complex (EC) to the GIGANTEA (GI) promoter to repress gene expression, and modulating flowering time. Therefore, HOS15 connects photoperiodic pathway and epigenetic mechanism to control flowering time in plants. In addition, growing body of evidence support a diverse roles of the epigenetic regulator HOS15 in fine-tuning plant development and growth by integrating intrinsic genetic components and various environmental signals.
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Affiliation(s)
- Li-Jun Huang
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Yukun Wang
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Zeng Lin
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Dong Jiang
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Yong Luo
- School of Chemistry and Environmental Science, Xiangnan University, Chenzhou, China
| | - Ning Li
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, College of Forestry, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Forest Bio-resources and Integrated Pest Management for Higher Education in Hunan Province, Central South University of Forestry and Technology, Changsha, China
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8
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Lim CJ, Park KS, Ali A, Park J, Ryou SM, Shen M, Khan HA, Bader ZE, Zareen S, Bae MJ, Choi JH, Xu ZY, Pardo JM, Yun DJ. Negative regulation of floral transition in Arabidopsis by HOS15-PWR-HDA9 complex. FRONTIERS IN PLANT SCIENCE 2023; 13:1105988. [PMID: 36684790 PMCID: PMC9853073 DOI: 10.3389/fpls.2022.1105988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Arabidopsis HOS15/PWR/HDA9 repressor complex, which is similar to the TBL1/NcoR1/HDAC complex in animals, plays a well-known role in epigenetic regulation. PWR and HDA9 have been reported to interact with each other and modulate the flowering time by repressing AGL19 expression, whereas HOS15 and HDA9, together with the photoperiodic evening complex, regulate flowering time through repression of GI transcription. However, the role of the HOS15/PWR/HDA9 core repressor complex as a functional unit in the regulation of flowering time is yet to be explored. In this study, we reported that the loss-of-function hos15-2/pwr/hda9 triple mutant accumulates higher transcript levels of AGL19 and exhibits an early flowering phenotype similar to those of hos15, pwr, and hda9 single mutants. Interestingly, the accumulation of HOS15 in the nucleus was drastically reduced in pwr and hda9 mutants. As a result, HOS15 could not perform its role in histone deacetylation or interaction with H3 in the nucleus. Furthermore, HOS15 is also associated with the same region of the AGL19 promoter known for PWR-HDA9 binding. The acetylation level of the AGL19 promoter was increased in the hos15-2 mutant, similar to the pwr and hda9 mutants. Therefore, our findings reveal that the HOS15/PWR/HDA9 repressor complex deacetylates the promoter region of AGL19, thereby negatively regulating AGL19 transcription, which leads to early flowering in Arabidopsis.
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Affiliation(s)
- Chae Jin Lim
- Institute of Global Disease Control, Konkuk University, Seoul, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Ki Suk Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Akhtar Ali
- Institute of Global Disease Control, Konkuk University, Seoul, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Junghoon Park
- Institute of Global Disease Control, Konkuk University, Seoul, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Seung Min Ryou
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Mingzhe Shen
- Department of Agronomy, Agricultural College, Yanbian University, Yanji, China
| | - Haris Ali Khan
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Zein Eddin Bader
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Shah Zareen
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Min Jae Bae
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Jong Hyoo Choi
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Zheng-Yi Xu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Jose M. Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones 17 Cientificas and Universidad de Sevilla, Seville, Spain
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
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9
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Yu X, Cui X, Wu C, Shi S, Yan S. Salicylic acid inhibits gibberellin signaling through receptor interactions. MOLECULAR PLANT 2022; 15:1759-1771. [PMID: 36199245 DOI: 10.1016/j.molp.2022.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/26/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
It is well known that plants activate defense responses at the cost of growth. However, the underlying molecular mechanisms are not well understood. The phytohormones salicylic acid (SA) and gibberellin (GA) promote defense response and growth, respectively. Here we show that SA inhibits GA signaling to repress plant growth. We found that the SA receptor NPR1 interacts with the GA receptor GID1. Further biochemical studies revealed that NPR1 functions as an adaptor of ubiquitin E3 ligase to promote the polyubiquitination and degradation of GID1, which enhances the stability of DELLA proteins, the negative regulators of GA signaling. Genetic analysis suggested that NPR1, GID1, and DELLA proteins are all required for the SA-mediated growth inhibition. Collectively, our study not only uncovers a novel regulatory mechanism of growth-defense trade-off but also reveals the interaction of hormone receptors as a new mode of hormonal crosstalk.
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Affiliation(s)
- Xiaodong Yu
- Hubei Hongshan Laboratory, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen 518000, China; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China
| | - Xiaoyu Cui
- Hubei Hongshan Laboratory, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen 518000, China; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China
| | - Chong Wu
- Hubei Hongshan Laboratory, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen 518000, China; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China
| | - Shixi Shi
- Hubei Hongshan Laboratory, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen 518000, China; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China
| | - Shunping Yan
- Hubei Hongshan Laboratory, Wuhan 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen 518000, China; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China.
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10
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Wang Z, Orosa-Puente B, Nomoto M, Grey H, Potuschak T, Matsuura T, Mori IC, Tada Y, Genschik P, Spoel SH. Proteasome-associated ubiquitin ligase relays target plant hormone-specific transcriptional activators. SCIENCE ADVANCES 2022; 8:eabn4466. [PMID: 36269824 PMCID: PMC9586472 DOI: 10.1126/sciadv.abn4466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
The ubiquitin-proteasome system is vital to hormone-mediated developmental and stress responses in plants. Ubiquitin ligases target hormone-specific transcriptional activators (TAs) for degradation, but how TAs are processed by proteasomes remains unknown. We report that in Arabidopsis, the salicylic acid- and ethylene-responsive TAs, NPR1 and EIN3, are relayed from pathway-specific ubiquitin ligases to proteasome-associated HECT-type UPL3/4 ligases. Activity and stability of NPR1 were regulated by sequential action of three ubiquitin ligases, including UPL3/4, while proteasome processing of EIN3 required physical handover between ethylene-responsive SCFEBF2 and UPL3/4 ligases. Consequently, UPL3/4 controlled extensive hormone-induced developmental and stress-responsive transcriptional programs. Thus, our findings identify unknown ubiquitin ligase relays that terminate with proteasome-associated HECT-type ligases, which may be a universal mechanism for processive degradation of proteasome-targeted TAs and other substrates.
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Affiliation(s)
- Zhishuo Wang
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Beatriz Orosa-Puente
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Mika Nomoto
- The Centre for Gene Research, Division of Biological Science, Nagoya University, Nagoya, Japan
| | - Heather Grey
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Thomas Potuschak
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Takakazu Matsuura
- Institute of Plant Science and Resources, Okayama University, Okayama, Japan
| | - Izumi C. Mori
- Institute of Plant Science and Resources, Okayama University, Okayama, Japan
| | - Yasuomi Tada
- The Centre for Gene Research, Division of Biological Science, Nagoya University, Nagoya, Japan
| | - Pascal Genschik
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Steven H. Spoel
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
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11
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Tomaž Š, Gruden K, Coll A. TGA transcription factors-Structural characteristics as basis for functional variability. FRONTIERS IN PLANT SCIENCE 2022; 13:935819. [PMID: 35958211 PMCID: PMC9360754 DOI: 10.3389/fpls.2022.935819] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
TGA transcription factors are essential regulators of various cellular processes, their activity connected to different hormonal pathways, interacting proteins and regulatory elements. Belonging to the basic region leucine zipper (bZIP) family, TGAs operate by binding to their target DNA sequence as dimers through a conserved bZIP domain. Despite sharing the core DNA-binding sequence, the TGA paralogues exert somewhat different DNA-binding preferences. Sequence variability of their N- and C-terminal protein parts indicates their importance in defining TGA functional specificity through interactions with diverse proteins, affecting their DNA-binding properties. In this review, we provide a short and concise summary on plant TGA transcription factors from a structural point of view, including the relation of their structural characteristics to their functional roles in transcription regulation.
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Affiliation(s)
- Špela Tomaž
- Department of Biotechnology and Systems Biology, National Institute of Biology, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Kristina Gruden
- Department of Biotechnology and Systems Biology, National Institute of Biology, Ljubljana, Slovenia
| | - Anna Coll
- Department of Biotechnology and Systems Biology, National Institute of Biology, Ljubljana, Slovenia
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12
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Khan IU, Ali A, Zareen S, Khan HA, Lim CJ, Park J, Pardo JM, Yun DJ. Non-Expresser of PR-Genes 1 Positively Regulates Abscisic Acid Signaling in Arabidopsis thaliana. PLANTS (BASEL, SWITZERLAND) 2022; 11:815. [PMID: 35336696 PMCID: PMC8950481 DOI: 10.3390/plants11060815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 03/03/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
The plant hormone, abscisic acid (ABA), is not only important for promoting abiotic stress responses but also plays a versatile and crucial role in plant immunity. The pathogen infection-induced dynamic accumulation of ABA mediates the degradation of non-expresser of PR genes 1 (NPR1) through the CUL3NPR3NPR4 proteasome pathway. However, the functional significance of NPR1 degradation by other E3 ligases in response to ABA remains unclear. Here, we report that NPR1 is induced transcriptionally by ABA and that npr1-1 mutation results in ABA insensitivity during seed germination and seedling growth. Mutants lacking NPR1 downregulate the expression of ABA-responsive transcription factors ABA INSENSITIVE4 (ABI4) and ABA INSENSITIVE5 (ABI5), and that of their downstream targets EM6, RAB18, RD26, and RD29B. The npr1-1 mutation also affects the transcriptional activity of WRKY18, which activates WRKY60 in the presence of ABA. Furthermore, NPR1 directly interacts with and is degraded by HOS15, a substrate receptor for the DDB1-CUL4 ubiquitin E3 ligase complex. Collectively, our findings demonstrate that NPR1 acts as a positive regulator of ABA-responsive genes, whereas HOS15 promotes NPR1 degradation in a proteasome-dependent manner.
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Affiliation(s)
- Irfan Ullah Khan
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
| | - Akhtar Ali
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Korea
| | - Shah Zareen
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
| | - Haris Ali Khan
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
| | - Chae Jin Lim
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Korea
| | - Junghoon Park
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Korea
| | - Jose M. Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas, 41092 Seville, Spain;
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea; (I.U.K.); (A.A.); (S.Z.); (H.A.K.); (C.J.L.); (J.P.)
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13
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Zareen S, Ali A, Lim CJ, Khan HA, Park J, Xu ZY, Yun DJ. The Transcriptional Corepressor HOS15 Mediates Dark-Induced Leaf Senescence in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:828264. [PMID: 35283908 PMCID: PMC8914473 DOI: 10.3389/fpls.2022.828264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/14/2022] [Indexed: 05/23/2023]
Abstract
Multiple endogenous and environmental signals regulate the intricate and highly complex processes driving leaf senescence in plants. A number of genes have been identified in a variety of plant species, including Arabidopsis, which influence leaf senescence. Previously, we have shown that HOS15 is a multifunctional protein that regulates several physiological processes, including plant growth and development under adverse environmental conditions. HOS15 has also been reported to form a chromatin remodeling complex with PWR and HDA9 and to regulate the chromatin structure of numerous genes. However, unlike PWR and HDA9, the involvement of HOS15 in leaf senescence is yet to be identified. Here, we report that HOS15, together with PWR and HDA9, promotes leaf senescence via transcriptional regulation of SAG12/29, senescence marker genes, and CAB1/RCBS1A, photosynthesis-related genes. The expression of ORE1, SAG12, and SAG29 was downregulated in hos15-2 plants, whereas the expression of photosynthesis-related genes, CAB1 and RCBS1A, was upregulated. HOS15 also promoted senescence through dark stress, as its mutation led to a much greener phenotype than that of the WT. Phenotypes of double and triple mutants of HOS15 with PWR and HDA9 produced phenotypes similar to those of a single hos15-2. In line with this observation, the expression levels of NPX1, APG9, and WRKY57 were significantly elevated in hos15-2 and hos15/pwr, hos15/hda9, and hos15/pwr/hda9 mutants compared to those in the WT. Surprisingly, the total H3 acetylation level decreased in age-dependent manner and under dark stress in WT; however, it remained the same in hos15-2 plants regardless of dark stress, suggesting that dark-induced deacetylation requires functional HOS15. More interestingly, the promoters of APG9, NPX1, and WRKY57 were hyperacetylated in hos15-2 plants compared to those in WT plants. Our data reveal that HOS15 acts as a positive regulator and works in the same repressor complex with PWR and HDA9 to promote leaf senescence through aging and dark stress by repressing NPX1, APG9, and WRKY57 acetylation.
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Affiliation(s)
- Shah Zareen
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Akhtar Ali
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
| | - Chae Jin Lim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Haris Ali Khan
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Junghoon Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Zheng-Yi Xu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
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14
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Gulabani H, Goswami K, Walia Y, Roy A, Noor JJ, Ingole KD, Kasera M, Laha D, Giehl RFH, Schaaf G, Bhattacharjee S. Arabidopsis inositol polyphosphate kinases IPK1 and ITPK1 modulate crosstalk between SA-dependent immunity and phosphate-starvation responses. PLANT CELL REPORTS 2022; 41:347-363. [PMID: 34797387 DOI: 10.1007/s00299-021-02812-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/04/2021] [Indexed: 05/27/2023]
Abstract
KEY MESSAGE Selective Arabidopsis thaliana inositol phosphate kinase functions modulate response amplitudes in innate immunity by balancing signalling adjustments with phosphate homeostasis networks. Pyrophosphorylation of InsP6 generates InsP7 and/or InsP8 containing high-energy phosphoanhydride bonds that are harnessed during energy requirements of a cell. As bona fide co-factors for several phytohormone networks, InsP7/InsP8 modulate key developmental processes. With requirements in transducing jasmonic acid (JA) and phosphate-starvation responses (PSR), InsP8 exemplifies a versatile metabolite for crosstalks between different cellular pathways during diverse stress exposures. Here we show that Arabidopsis thaliana INOSITOL PENTAKISPHOSPHATE 2-KINASE 1 (IPK1), INOSITOL 1,3,4-TRISPHOSPHATE 5/6-KINASE 1 (ITPK1), and DIPHOSPHOINOSITOL PENTAKISPHOSPHATE KINASE 2 (VIH2) implicated in InsP8 biosynthesis, suppress salicylic acid (SA)-dependent immunity. In ipk1, itpk1 or vih2 mutants, constitutive activation of defenses lead to enhanced resistance against the Pseudomonas syringae pv tomato DC3000 (PstDC3000) strain. Our data reveal that upregulated SA-signaling sectors potentiate increased expression of several phosphate-starvation inducible (PSI)-genes, previously known in these mutants. In reciprocation, upregulated PSI-genes moderate expression amplitudes of defense-associated markers. We demonstrate that SA is induced in phosphate-deprived plants, however its defense-promoting functions are likely diverted to PSR-supportive roles. Overall, our investigations reveal selective InsPs as crosstalk mediators in defense-phosphate homeostasis and in reprogramming stress-appropriate response intensities.
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Affiliation(s)
- Hitika Gulabani
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
- Manipal Academy of Higher Education (MAHE), Manipal University, Manipal, Karnataka, 576104, India
| | - Krishnendu Goswami
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
| | - Yashika Walia
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
| | - Abhisha Roy
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
| | - Jewel Jameeta Noor
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
| | - Kishor D Ingole
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
- Kalinga Institute of Industrial Technology (KIIT) University, Bhubaneswar, Odisha, 751024, India
| | - Mritunjay Kasera
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India
| | - Debabrata Laha
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, 560 012, India
| | - Ricardo F H Giehl
- Department of Physiology and Cell Biology, Leibniz-Institute of Plant Genetics and Crop Plant Research, 06466, Gatersleben, Germany
| | - Gabriel Schaaf
- Department of Plant Nutrition, Institute of Crop Science and Resource Conservation, Rheinische Friedrich-Wilhelms-Universität Bonn, 53115, Bonn, Germany
| | - Saikat Bhattacharjee
- Laboratory of Signal Transduction and Plant Resistance, UNESCO-Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana, 121001, India.
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15
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Zhang X, Cheng J, Lin Y, Fu Y, Xie J, Li B, Bian X, Feng Y, Liang W, Tang Q, Zhang H, Liu X, Zhang Y, Liu C, Jiang D. Editing homologous copies of an essential gene affords crop resistance against two cosmopolitan necrotrophic pathogens. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:2349-2361. [PMID: 34265153 PMCID: PMC8541787 DOI: 10.1111/pbi.13667] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/17/2021] [Accepted: 07/07/2021] [Indexed: 05/03/2023]
Abstract
Sclerotinia sclerotiorum and Botrytis cinerea are typical necrotrophic pathogens that can attack more than 700 and 3000 plant species, respectively, and cause huge economic losses across numerous crops. In particular, the absence of resistant cultivars makes the stem rot because of S. sclerotiorum the major threat of rapeseed (Brassica napus) worldwide along with Botrytis. Previously, we identified an effector-like protein (SsSSVP1) from S. sclerotiorum and a homologue of SsSSVP1 on B. cinerea genome and found that SsSSVP1 could interact with BnQCR8 of rapeseed, a subunit of the cytochrome b-c1 complex. In this study, we found that BnQCR8 has eight homologous copies in rapeseed cultivar Westar and reduced the copy number of BnQCR8 using CRISPR/Cas9 to improve rapeseed resistance against S. sclerotiorum. Mutants with one or more copies of BnQCR8 edited showed strong resistance against S. sclerotiorum and B. cinerea. BnQCR8-edited mutants did not show significant difference from Westar in terms of respiration and agronomic traits tested, including the plant shape, flowering time, silique size, seed number, thousand seed weight and seed oil content. These traits make it possible to use these mutants directly for commercial production. Our study highlights a common gene for breeding of rapeseed to unravel the key hindrance of rapeseed production caused by S. sclerotiorum and B. cinerea. In contrast to previously established methodologies, our findings provide a novel strategy to develop crops with high resistance against multiple pathogens by editing only a single gene that encodes the common target of pathogen effectors.
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Affiliation(s)
- Xuekun Zhang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Jiasen Cheng
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Yang Lin
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Yanping Fu
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Jiatao Xie
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Bo Li
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Xuefeng Bian
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Yanbo Feng
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Weibo Liang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Qian Tang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Hongxiang Zhang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Xiaofan Liu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Yu Zhang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Changxing Liu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
| | - Daohong Jiang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Key Laboratory of Plant PathologyHuazhong Agricultural UniversityWuhanHubei ProvinceChina
- Hubei Hongshan LaboratoryWuhanChina
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16
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Lee BH, Wang R, Moberg IM, Reeder SH, Amom P, Tan MH, Amstutz K, Chandna P, Helton A, Andrianova EP, Zhulin IB, Dobritsa AA. A species-specific functional module controls formation of pollen apertures. NATURE PLANTS 2021; 7:966-978. [PMID: 34183783 PMCID: PMC8292223 DOI: 10.1038/s41477-021-00951-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 05/25/2021] [Indexed: 05/05/2023]
Abstract
Pollen apertures are an interesting model for the formation of specialized plasma-membrane domains. The plant-specific protein INP1 serves as a key aperture factor in such distantly related species as Arabidopsis, rice and maize. Although INP1 orthologues probably play similar roles throughout flowering plants, they show substantial sequence divergence and often cannot substitute for each other, suggesting that INP1 might require species-specific partners. Here, we present a new aperture factor, INP2, which satisfies the criteria for being a species-specific partner for INP1. Both INP proteins display similar structural features, including the plant-specific DOG1 domain, similar patterns of expression and mutant phenotypes, as well as signs of co-evolution. These proteins interact with each other in a species-specific manner and can restore apertures in a heterologous system when both are expressed but not when expressed individually. Our findings suggest that the INP proteins form a species-specific functional module that underlies formation of pollen apertures.
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Affiliation(s)
- Byung Ha Lee
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Rui Wang
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Ingrid M Moberg
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
- Norwegian Science and Technology University, Ålesund, Norway
| | - Sarah H Reeder
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Prativa Amom
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Michelle H Tan
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Katelyn Amstutz
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Pallavi Chandna
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | - Adam Helton
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA
| | | | - Igor B Zhulin
- Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Anna A Dobritsa
- Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA.
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