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Kumar P, Kumari P, Mehra R, Singh B, Kumar R. Hijacking of the methylglyoxal detoxification pathway: a new tactic of Xoo pathogenesis in rice. PHYSIOLOGIA PLANTARUM 2024; 176:e14439. [PMID: 38991551 DOI: 10.1111/ppl.14439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/06/2024] [Accepted: 06/11/2024] [Indexed: 07/13/2024]
Abstract
Xanthomonas oryzae pv. oryzae (Xoo), the causative agent of bacterial blight (BB), has developed a unique strategy to infect rice by hijacking the host's methylglyoxal (MG) detoxification pathway. This results in an over-accumulation of MG, which facilitates tissue colonization and evasion of host's immune responses. While MG role in abiotic stresses is well-documented, its involvement in biotic stresses has not been extensively explored. Recently, Fu et al. (2024) provided the first evidence of MG role in promoting Xoo pathogenesis in rice. This new virulence strategy contributes to the pathogen's remarkable adaptability and survival. In this mechanism of hijacking of MG detoxification pathway, Xoo induces OsWRKY62.1 to inhibit OsGLY II expression, leading to MG overaccumulation in infected rice cells. This excess MG hinders plant cell organelle function, creating a favorable environment for Xoo by compromising the rice defense system. In this article, we have presented our perspectives on how the BB pathogen adapts its virulence mechanisms to infect and cause disease in rice.
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Affiliation(s)
- Parvesh Kumar
- ICAR- Indian Institute of Maize Research, Ludhiana, India
- Department of Plant Pathology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Poonam Kumari
- Department of Plant Pathology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Rakesh Mehra
- Department of Plant Pathology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Bahaderjeet Singh
- Department of Plant Pathology, Guru Kashi University, Talwandi Sabo, Punjab, India
| | - Rakesh Kumar
- Department of Plant Pathology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
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2
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Guo Y, Jiang Y, Wu M, Tu A, Yin J, Yang J. TaWRKY50-TaSARK7 module-mediated cysteine-rich protein phosphorylation suppresses the programmed cell death response to Chinese wheat mosaic virus infection. Virology 2024; 595:110071. [PMID: 38593594 DOI: 10.1016/j.virol.2024.110071] [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: 02/01/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
WRKY transcription factors are widely involved in plant responses to biotic and abiotic stresses. However, there is currently a limited understanding of the regulation of viral infection by WRKY transcription factors in wheat (Triticum aestivum). The WRKY transcription factor TaWRKY50 in group IIb wheat exhibited a significant response to Chinese wheat mosaic virus infection. TaWRKY50 is localized in the nucleus and is an activating transcription factor. Interestingly, we found that silencing TaWRKY50 induces cell death following inoculation with CWMV. The protein kinase TaSAPK7 is specific to plants, whereas NbSRK is a closely related kinase with high homology to TaSAPK7. The transcriptional activities of both TaSAPK7 and NbSRK can be enhanced by TaWRKY50 binding to their promoters. CRP is an RNA silencing suppressor. Furthermore, TaWRKY50 may regulate CWMV infection by regulating the expression of TaSAPK7 and NbSRK to increase CRP phosphorylation and reduce the amount of programmed cell death (PCD).
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Affiliation(s)
- Yunfei Guo
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Yaoyao Jiang
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Mila Wu
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Aizhu Tu
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Jingliang Yin
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Jian Yang
- State Key Laboratory for Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China.
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3
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Liu L, Zhao L, Liu Y, Zhu Y, Chen S, Yang L, Li X, Chen W, Xu Z, Xu P, Wang H, Yu D. Transcription factor OsWRKY72 controls rice leaf angle by regulating LAZY1-mediated shoot gravitropism. PLANT PHYSIOLOGY 2024; 195:1586-1600. [PMID: 38478430 DOI: 10.1093/plphys/kiae159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 02/13/2024] [Indexed: 06/02/2024]
Abstract
Leaf angle is a major trait of ideal architecture, which is considered to influence rice (Oryza sativa) cultivation and grain yield. Although a few mutants with altered rice leaf inclination angles have been reported, the underlying molecular mechanism remains unclear. In this study, we showed that a WRKY transcription factor gene, OsWRKY72, was highly expressed in the leaf sheath and lamina joint. Phenotypic analyses showed that oswrky72 mutants had smaller leaf angles than the wild type, while OsWRKY72 overexpression lines exhibited an increased leaf angle. This observation suggests that OsWRKY72 functions as a positive regulator, promoting the enlargement of the leaf angle. Our bioinformatics analysis identified LAZY1 as the downstream gene of OsWRKY72. Electrophoretic mobility shift assays and dual-luciferase analysis revealed that OsWRKY72 directly inhibited LAZY1 by binding to its promoter. Moreover, knocking out OsWRKY72 enhanced shoot gravitropism, which contrasted with the phenotype of lazy1 plants. These results imply that OsWRKY72 regulates the leaf angle through gravitropism by reducing the expression of LAZY1. In addition, OsWRKY72 could directly regulate the expression of other leaf angle-related genes such as FLOWERING LOCUS T-LIKE 12 (OsFTL12) and WALL-ASSOCIATED KINASE 11 (OsWAK11). Our study indicates that OsWRKY72 contributes positively to the expansion of the leaf angle by interfering with shoot gravitropism in rice.
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Affiliation(s)
- Lei Liu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Lirong Zhao
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yunwei Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
| | - Yi Zhu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
- School of Life Sciences, Yunnan University, 650500 Kunming, China
| | - Shidie Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
- Southwest United Graduate School, 650092 Kunming, China
| | - Lu Yang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
| | - Xia Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
- Southwest United Graduate School, 650092 Kunming, China
| | - Wanqin Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
| | - Zhiyu Xu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
| | - Peng Xu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China
| | - Houping Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
- School of Life Sciences, Yunnan University, 650500 Kunming, China
| | - Diqiu Yu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, 650500 Kunming, China
- School of Life Sciences, Yunnan University, 650500 Kunming, China
- Southwest United Graduate School, 650092 Kunming, China
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Zhang M, Chen D, Tian J, Cao J, Xie K, He Y, Yuan M. OsGELP77, a QTL for broad-spectrum disease resistance and yield in rice, encodes a GDSL-type lipase. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:1352-1371. [PMID: 38100249 PMCID: PMC11022805 DOI: 10.1111/pbi.14271] [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: 10/09/2023] [Revised: 11/15/2023] [Accepted: 11/29/2023] [Indexed: 12/17/2023]
Abstract
Lipids and lipid metabolites have essential roles in plant-pathogen interactions. GDSL-type lipases are involved in lipid metabolism modulating lipid homeostasis. Some plant GDSLs modulate lipid metabolism altering hormone signal transduction to regulate host-defence immunity. Here, we functionally characterized a rice lipase, OsGELP77, promoting both immunity and yield. OsGELP77 expression was induced by pathogen infection and jasmonic acid (JA) treatment. Overexpression of OsGELP77 enhanced rice resistance to both bacterial and fungal pathogens, while loss-of-function of osgelp77 showed susceptibility. OsGELP77 localizes to endoplasmic reticulum and is a functional lipase hydrolysing universal lipid substrates. Lipidomics analyses demonstrate that OsGELP77 is crucial for lipid metabolism and lipid-derived JA homeostasis. Genetic analyses confirm that OsGELP77-modulated resistance depends on JA signal transduction. Moreover, population genetic analyses indicate that OsGELP77 expression level is positively correlated with rice resistance against pathogens. Three haplotypes were classified based on nucleotide polymorphisms in the OsGELP77 promoter where OsGELP77Hap3 is an elite haplotype. Three OsGELP77 haplotypes are differentially distributed in wild and cultivated rice, while OsGELP77Hap3 has been broadly pyramided for hybrid rice development. Furthermore, quantitative trait locus (QTL) mapping and resistance evaluation of the constructed near-isogenic line validated OsGELP77, a QTL for broad-spectrum disease resistance. In addition, OsGELP77-modulated lipid metabolism promotes JA accumulation facilitating grain yield. Notably, the hub defence regulator OsWRKY45 acts upstream of OsGELP77 by initiating the JA-dependent signalling to trigger immunity. Together, OsGELP77, a QTL contributing to immunity and yield, is a candidate for breeding broad-spectrum resistant and high-yielding rice.
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Affiliation(s)
- Miaojing Zhang
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Dan Chen
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Jingjing Tian
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Jianbo Cao
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Kabin Xie
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Yuqing He
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Meng Yuan
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
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Uji Y, Suzuki G, Fujii Y, Kashihara K, Yamada S, Gomi K. Jasmonic acid (JA)-mediating MYB transcription factor1, JMTF1, coordinates the balance between JA and auxin signalling in the rice defence response. PHYSIOLOGIA PLANTARUM 2024; 176:e14257. [PMID: 38504376 DOI: 10.1111/ppl.14257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/19/2024] [Accepted: 03/12/2024] [Indexed: 03/21/2024]
Abstract
The plant hormone jasmonic acid (JA) is a signalling compound involved in the regulation of cellular defence and development in plants. In this study, we investigated the roles of a JA-responsive MYB transcription factor, JMTF1, in the JA-regulated defence response against rice bacterial blight caused by Xanthomonas oryzae pv. oryzae (Xoo). JMTF1 did not interact with any JASMONATE ZIM-domain (JAZ) proteins. Transgenic rice plants overexpressing JMTF1 showed a JA-hypersensitive phenotype and enhanced resistance against Xoo. JMTF1 upregulated the expression of a peroxidase, OsPrx26, and monoterpene synthase, OsTPS24, which are involved in the biosynthesis of lignin and antibacterial monoterpene, γ-terpinene, respectively. OsPrx26 was mainly expressed in the vascular bundle. Transgenic rice plants overexpressing OsPrx26 showed enhanced resistance against Xoo. In addition to the JA-hypersensitive phenotype, the JMTF1-overexpressing rice plants showed a typical auxin-related phenotype. The leaf divergence and shoot gravitropic responses were defective, and the number of lateral roots decreased significantly in the JMTF1-overexpressing rice plants. JMTF1 downregulated the expression of auxin-responsive genes but upregulated the expression of OsIAA13, a suppressor of auxin signalling. The rice gain-of-function mutant Osiaa13 showed high resistance against Xoo. Transgenic rice plants overexpressing OsEXPA4, a JMTF1-downregulated auxin-responsive gene, showed increased susceptibility to Xoo. JMTF1 is selectively bound to the promoter of OsPrx26 in vivo. These results suggest that JMTF1 positively regulates disease resistance against Xoo by coordinating crosstalk between JA- and auxin-signalling in rice.
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Affiliation(s)
- Yuya Uji
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Go Suzuki
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Yumi Fujii
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Keita Kashihara
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Shoko Yamada
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Kenji Gomi
- Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
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Fu ZW, Li JH, Gao X, Wang SJ, Yuan TT, Lu YT. Pathogen-induced methylglyoxal negatively regulates rice bacterial blight resistance by inhibiting OsCDR1 protease activity. MOLECULAR PLANT 2024; 17:325-341. [PMID: 38178576 DOI: 10.1016/j.molp.2024.01.001] [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: 07/24/2023] [Revised: 11/10/2023] [Accepted: 01/02/2024] [Indexed: 01/06/2024]
Abstract
Xanthomonas oryzae pv. oryzae (Xoo) causes bacterial blight (BB), a globally devastating disease of rice (Oryza sativa) that is responsible for significant crop loss. Sugars and sugar metabolites are important for pathogen infection, providing energy and regulating events associated with defense responses; however, the mechanisms by which they regulate such events in BB are unclear. As an inevitable sugar metabolite, methylglyoxal (MG) is involved in plant growth and responses to various abiotic stresses, but the underlying mechanisms remain enigmatic. Whether and how MG functions in plant biotic stress responses is almost completely unknown. Here, we report that the Xoo strain PXO99 induces OsWRKY62.1 to repress transcription of OsGLY II genes by directly binding to their promoters, resulting in overaccumulation of MG. MG negatively regulates rice resistance against PXO99: osglyII2 mutants with higher MG levels are more susceptible to the pathogen, whereas OsGLYII2-overexpressing plants with lower MG content show greater resistance than the wild type. Overexpression of OsGLYII2 to prevent excessive MG accumulation confers broad-spectrum resistance against the biotrophic bacterial pathogens Xoo and Xanthomonas oryzae pv. oryzicola and the necrotrophic fungal pathogen Rhizoctonia solani, which causes rice sheath blight. Further evidence shows that MG reduces rice resistance against PXO99 through CONSTITUTIVE DISEASE RESISTANCE 1 (OsCDR1). MG modifies the Arg97 residue of OsCDR1 to inhibit its aspartic protease activity, which is essential for OsCDR1-enhanced immunity. Taken together, these findings illustrate how Xoo promotes infection by hijacking a sugar metabolite in the host plant.
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Affiliation(s)
- Zheng-Wei Fu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China; Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Jian-Hui Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China
| | - Xiang Gao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China
| | - Shi-Jia Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China
| | - Ting-Ting Yuan
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China
| | - Ying-Tang Lu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan 430072, China.
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Yang Z, Liang G, Liu C, Chu Z, Li N. The F-box protein ZmFBL41 negatively regulates disease resistance to Rhizoctonia solani by degrading the abscisic acid synthase ZmNCED6 in maize. PLANT CELL REPORTS 2024; 43:48. [PMID: 38300347 DOI: 10.1007/s00299-023-03132-4] [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: 09/07/2023] [Accepted: 12/14/2023] [Indexed: 02/02/2024]
Abstract
KEY MESSAGE The maize F-box protein ZmFBL41 targets abscisic acid synthase 9-cis-epoxycarotenoid dioxygenase 6 for degradation, and this regulatory module is exploited by Rhizoctonia solani to promote infection. F-box proteins are crucial regulators of plant growth, development, and responses to abiotic and biotic stresses. Previous research identified the F-box gene ZmFBL41 as a negative regulator of maize (Zea mays) defenses against Rhizoctonia solani. However, the precise mechanisms by which F-box proteins mediate resistance to R. solani remain poorly understood. In this study, we show that ZmFBL41 interacts with an abscisic acid (ABA) synthase, 9-cis-epoxycarotenoid dioxygenase 6 (ZmNCED6), promoting its degradation via the ubiquitination pathway. We discovered that the ectopic overexpression of ZmNCED6 in rice (Oryza sativa) inhibited R. solani infection by activating stomatal closure, callose deposition, and jasmonic acid (JA) biosynthesis, indicating that ZmNCED6 enhances plant immunity against R. solani. Natural variation at ZmFBL41 across different maize haplotypes did not affect the ZmFBL41-ZmNCED6 interaction. These findings suggest that ZmFBL41 targets ZmNCED6 for degradation, leading to a decrease in ABA levels in maize, in turn, inhibiting ABA-mediated disease resistance pathways, such as stomatal closure, callose deposition, and JA biosynthesis, ultimately facilitating R. solani infection.
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Affiliation(s)
- Zhangshuai Yang
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Guanyu Liang
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Chenxu Liu
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Zhaohui Chu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
| | - Ning Li
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China.
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Liu M, Kang B, Wu H, Peng B, Liu L, Hong N, Gu Q. Ethylene enhances resistance to cucumber green mottle mosaic virus via the ClWRKY70- ClACO5 module in watermelon plants. FRONTIERS IN PLANT SCIENCE 2024; 14:1332037. [PMID: 38273961 PMCID: PMC10808359 DOI: 10.3389/fpls.2023.1332037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024]
Abstract
Introduction Ethylene (ET) is involved in plant responses to viral infection. However, its molecular mechanisms and regulatory network remain largely unknown. Methods and results In the present study, we report that cucumber green mottle mosaic virus (CGMMV) in watermelon (Citrullus lanatus) triggers ET production by inducing the expression of ClACO5, a key gene of the ET biosynthesis pathway through transcriptome data analysis and gene function validation. The knock-down of ClACO5 expression through virus-induced gene silencing in watermelon and overexpressing ClACO5 in transgenic Nicotiana benthamiana indicated that ClACO5 positively regulates CGMMV resistance and ET biosynthesis. The salicylic acid-responsive transcription factor gene ClWRKY70 shares a similar expression pattern with ClACO5. We demonstrate that ClWRKY70 directly binds to the W-box cis-element in the ClACO5 promoter and enhances its transcription. In addition, ClWRKY70 enhances plant responses to CGMMV infection by regulating ClACO5 expression in watermelon. Discussion Our results demonstrate that the ClWRKY70-ClACO5 module positively regulates resistance to CGMMV infection in watermelon, shedding new light on the molecular basis of ET accumulation in watermelon in response to CGMMV infection.
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Affiliation(s)
- Mei Liu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
- Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Baoshan Kang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
- Zhongyuan Research Center, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, China
| | - Huijie Wu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
| | - Bin Peng
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
| | - Liming Liu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
| | - Ni Hong
- Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qinsheng Gu
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences,Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Henan, China
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Xinjiang, China
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Son S, Park SR. The rice SnRK family: biological roles and cell signaling modules. FRONTIERS IN PLANT SCIENCE 2023; 14:1285485. [PMID: 38023908 PMCID: PMC10644236 DOI: 10.3389/fpls.2023.1285485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023]
Abstract
Stimulus-activated signaling pathways orchestrate cellular responses to control plant growth and development and mitigate the effects of adverse environmental conditions. During this process, signaling components are modulated by central regulators of various signal transduction pathways. Protein phosphorylation by kinases is one of the most important events transmitting signals downstream, via the posttranslational modification of signaling components. The plant serine and threonine kinase SNF1-related protein kinase (SnRK) family, which is classified into three subgroups, is highly conserved in plants. SnRKs participate in a wide range of signaling pathways and control cellular processes including plant growth and development and responses to abiotic and biotic stress. Recent notable discoveries have increased our understanding of how SnRKs control these various processes in rice (Oryza sativa). In this review, we summarize current knowledge of the roles of OsSnRK signaling pathways in plant growth, development, and stress responses and discuss recent insights. This review lays the foundation for further studies on SnRK signal transduction and for developing strategies to enhance stress tolerance in plants.
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Affiliation(s)
| | - Sang Ryeol Park
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, Republic of Korea
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10
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Javed T, Gao SJ. WRKY transcription factors in plant defense. Trends Genet 2023; 39:787-801. [PMID: 37633768 DOI: 10.1016/j.tig.2023.07.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 08/28/2023]
Abstract
Environmental stressors caused by climate change are fundamental barriers to agricultural sustainability. Enhancing the stress resilience of crops is a key strategy in achieving global food security. Plants perceive adverse environmental conditions and initiate signaling pathways to activate precise responses that contribute to their survival. WRKY transcription factors (TFs) are essential players in several signaling cascades and regulatory networks that have crucial implications for defense responses in plants. This review summarizes advances in research concerning how WRKY TFs mediate various signaling cascades and metabolic adjustments as well as how epigenetic modifications involved in environmental stress responses in plants can modulate WRKYs and/or their downstream genes. Emerging research shows that clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas)-mediated genome editing of WRKYs could be used to improve crop resilience.
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Affiliation(s)
- Talha Javed
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - San-Ji Gao
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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11
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Peng W, Wang Y, Zeng X, Li W, Song N, Liu J, Wang B, Dai L. Integrative transcriptomic, proteomic, and phosphoproteomic analysis on the defense response to Magnaporthe oryzae reveals different expression patterns at the molecular level of durably resistant rice cultivar Mowanggu. FRONTIERS IN PLANT SCIENCE 2023; 14:1212510. [PMID: 37521912 PMCID: PMC10373791 DOI: 10.3389/fpls.2023.1212510] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/30/2023] [Indexed: 08/01/2023]
Abstract
Rice blast, caused by Magnaporthe oryzae is one of the most destructive diseases of rice (Oryza sativa L.) in most rice-cultivated areas worldwide. Mowanggu (MWG) is a traditional landrace rice variety in Yunnan with broad-spectrum and durable blast resistance against rice blast fungus. However, the underlying disease-resistance mechanisms remain unknown. An integrative transcriptomic, proteomic, and phosphoproteomic analysis of MWG was performed after inoculation with M. oryzae in this study. The transcriptomic and proteomic results revealed that MWG was moderately correlated at the transcriptional and protein levels. Differentially expressed genes and proteins were up-regulated and significantly enriched in protein phosphorylation, peroxisome, plant-pathogen interactions, phenylpropanoid metabolism and phenylalanine biosynthesis pathways. The phosphoproteomic profile and phosphorylated-protein-interaction network revealed that the altered phosphoproteins were primarily associated with reactive oxygen species (ROS), glycolysis, MAPK signaling pathways, and amino acid biosynthesis. In addition, a series of physiological and biochemical parameters, including ROS, soluble sugars, soluble protein and callus accumulation and defense-related enzyme activities, were used to validate the possible blast resistance mechanisms of MWG. The integrative transcriptomic, proteomic, and phosphoproteomic analysis revealed the different expression patterns at the molecular level of the durably resistant rice cultivar MWG after inoculation with M. oryzae, which provides insight into the molecular mechanisms of rice blast resistance.
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Affiliation(s)
- Weiye Peng
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, China
| | - Yunsheng Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Xuanning Zeng
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Wei Li
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Na Song
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Jing Liu
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Bing Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
| | - Liangying Dai
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, China
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12
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Ramos RN, Zhang N, Lauff DB, Valenzuela-Riffo F, Figueroa CR, Martin GB, Pombo MA, Rosli HG. Loss-of-function mutations in WRKY22 and WRKY25 impair stomatal-mediated immunity and PTI and ETI responses against Pseudomonas syringae pv. tomato. PLANT MOLECULAR BIOLOGY 2023:10.1007/s11103-023-01358-0. [PMID: 37226022 DOI: 10.1007/s11103-023-01358-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/27/2023] [Indexed: 05/26/2023]
Abstract
Plants defend themselves against pathogens using a two-layered immune system. The first response, pattern-triggered immunity (PTI), is activated upon recognition of microbe-associated molecular patterns (MAMPs). Virulent bacteria such as Pseudomonas syringae pv. tomato (Pst), deliver effector proteins into the plant cell to promote susceptibility. However, some plants possess resistance (R) proteins that recognize specific effectors leading to the activation of the second response, effector-triggered immunity (ETI). Resistant tomatoes such as Río Grande-PtoR recognize two Pst effectors (AvrPto and AvrPtoB) through the host Pto/Prf complex and activate ETI. We previously showed that the transcription factors (TF) WRKY22 and WRKY25 are positive regulators of plant immunity against bacterial and potentially non-bacterial pathogens in Nicotiana benthamiana. Here, the CRISPR-Cas9 technique was used to develop three knockout tomato lines for either one or both TFs. The single and double mutants were all compromised in Pto/Prf-mediated ETI and had a weaker PTI response. The stomata apertures in all of the mutant lines did not respond to darkness or challenge with Pst DC3000. The WRKY22 and WRKY25 proteins both localize in the nucleus, but we found no evidence of a physical interaction between them. The WRKY22 TF was found to be involved in the transcriptional regulation of WRKY25, supporting the idea that they are not functionally redundant. Together, our results indicate that both WRKY TFs play a role in modulating stomata and are positive regulators of plant immunity in tomato.
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Affiliation(s)
- Romina N Ramos
- Instituto de Fisiología Vegetal, INFIVE, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina
| | - Ning Zhang
- Boyce Thompson Institute for Plant Research, 533 Tower Road, Ithaca, NY, 14853, USA
| | - Diana B Lauff
- Instituto de Fisiología Vegetal, INFIVE, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina
| | - Felipe Valenzuela-Riffo
- Laboratory of Plant Molecular Physiology, Institute of Biological Sciences, Campus Talca, Universidad de Talca, Talca, Chile
- Millenium Nucleus for the Development of Super Adaptable Plants (MN-SAP), Santiago, Chile
| | - Carlos R Figueroa
- Laboratory of Plant Molecular Physiology, Institute of Biological Sciences, Campus Talca, Universidad de Talca, Talca, Chile
- Millenium Nucleus for the Development of Super Adaptable Plants (MN-SAP), Santiago, Chile
| | - Gregory B Martin
- Boyce Thompson Institute for Plant Research, 533 Tower Road, Ithaca, NY, 14853, USA
- Section of Plant Pathology and Plant-Microbe Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA
| | - Marina A Pombo
- Instituto de Fisiología Vegetal, INFIVE, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina.
| | - Hernan G Rosli
- Instituto de Fisiología Vegetal, INFIVE, Universidad Nacional de La Plata, CONICET, La Plata, Buenos Aires, Argentina
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13
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Singh A, Roychoudhury A. Abscisic acid in plants under abiotic stress: crosstalk with major phytohormones. PLANT CELL REPORTS 2023; 42:961-974. [PMID: 37079058 DOI: 10.1007/s00299-023-03013-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/28/2023] [Indexed: 05/03/2023]
Abstract
KEY MESSAGE Extensive crosstalk exists among ABA and different phytohormones that modulate plant tolerance against different abiotic stress. Being sessile, plants are exposed to a wide range of abiotic stress (drought, heat, cold, salinity and metal toxicity) that exert unwarranted threat to plant life and drastically affect growth, development, metabolism, and yield of crops. To cope with such harsh conditions, plants have developed a wide range of protective phytohormones of which abscisic acid plays a pivotal role. It controls various physiological processes of plants such as leaf senescence, seed dormancy, stomatal closure, fruit ripening, and other stress-related functions. Under challenging situations, physiological responses of ABA manifested in the form of morphological, cytological, and anatomical alterations arise as a result of synergistic or antagonistic interaction with multiple phytohormones. This review provides new insight into ABA homeostasis and its perception and signaling crosstalk with other phytohormones at both molecular and physiological level under critical conditions including drought, salinity, heavy metal toxicity, and extreme temperature. The review also reveals the role of ABA in the regulation of various physiological processes via its positive or negative crosstalk with phytohormones, viz., gibberellin, melatonin, cytokinin, auxin, salicylic acid, jasmonic acid, ethylene, brassinosteroids, and strigolactone in response to alteration of environmental conditions. This review forms a basis for designing of plants that will have an enhanced tolerance capability against different abiotic stress.
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Affiliation(s)
- Ankur Singh
- Department of Biotechnology, St. Xavier's College (Autonomous), 30 Mother Teresa Sarani, Kolkata, 700016, West Bengal, India
| | - Aryadeep Roychoudhury
- Discipline of Life Sciences, School of Sciences, Indira Gandhi National Open University, Maidan Garhi, New Delhi, 110068, India.
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14
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Zhang M, Zhao R, Wang H, Ren S, Shi L, Huang S, Wei Z, Guo B, Jin J, Zhong Y, Chen M, Jiang W, Wu T, Du X. OsWRKY28 positively regulates salinity tolerance by directly activating OsDREB1B expression in rice. PLANT CELL REPORTS 2023; 42:223-234. [PMID: 36350394 DOI: 10.1007/s00299-022-02950-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
OsWRKY28 confers salinity tolerance by directly binding to OsDREB1B promoter and increasing its transcriptional activity, and negatively regulates abscisic acid mediated seedling establishment in rice. WRKY transcription factors have been reported to play a vital role in plants growth, development, abiotic and biotic stress responses. In this study, we explored the functions of a transcription factor OsWRKY28 in rice. The transcript level of OsWRKY28 was strikingly increased under drought, chilling, salt and abscisic acid treatments. The OsWRKY28 overexpression lines showed enhanced salinity stress tolerance, whereas the oswrky28 mutants displayed salt sensitivity compared to wild-type plants. Under salt stress treatment, the expression levels of OsbZIP05, OsHKT1;1 and OsDREB1B were significantly lower yet the level of OsHKT2;1 was significantly higher in oswrky28 mutants than those in wide type plants. Our data of yeast one-hybrid assay and dual-luciferase assay supported that OsWRKY28 could directly bind to the promoter of OsDREB1B to enhance salinity tolerance in rice. In addition, OsWRKY28 overexpression lines displayed hyposensitivity and the oswrky28 mutants showed hypersensitivity compared to wild-type plants under exogenous abscisic acid treatment. Based on the results of yeast two-hybrid assay and GAL4-dependent chimeric transactivation assay, OsWRKY28 physically interacts with OsMPK11 and its transcriptional activity could be regulated by OsMPK11. Together, OsWRKY28 confers salinity tolerance through directly targeting OsDREB1B promoter and further activating its transcription in rice.
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Affiliation(s)
- Mingxing Zhang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Ranran Zhao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Haitao Wang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Shule Ren
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Liyuan Shi
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Shuangzhan Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Zhiqi Wei
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Boya Guo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Jiuyan Jin
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Yu Zhong
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Mojun Chen
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China
| | - Wenzhu Jiang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China.
| | - Tao Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China.
| | - Xinglin Du
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, 130062, People's Republic of China.
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15
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Yi R, Shan X. Post-translational modifications: emerging regulators manipulating jasmonate biosynthesis and signaling. PLANT CELL REPORTS 2023; 42:215-222. [PMID: 36436084 DOI: 10.1007/s00299-022-02948-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Jasmonate (JA) is one of the key phytohormones essential for plant development and defense processes. The core JA biosynthetic and signaling pathways have been well-characterized. Notably, post-translational modifications (PTMs), which affect the protein structures and functions, have emerged as critical mechanisms to modulate JA output at different spatiotemporal levels. Disruption of PTMs in JA biosynthesis and signaling would cause the dysfunction of vital biological processes. Here, we give an overview of the PTMs that have been identified in JA biosynthetic and signaling pathways, and provide insights into the mechanisms by which PTMs define JA responses.
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Affiliation(s)
- Rong Yi
- College of Agronomy, Inner Mongolia Agricultural University, Hohhot, China
- Tsinghua-Peking Center for Life Science, and MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
| | - Xiaoyi Shan
- Tsinghua-Peking Center for Life Science, and MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China.
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16
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Jasmonic Acid-Induced β-Cyclocitral Confers Resistance to Bacterial Blight and Negatively Affects Abscisic Acid Biosynthesis in Rice. Int J Mol Sci 2023; 24:ijms24021704. [PMID: 36675223 PMCID: PMC9866013 DOI: 10.3390/ijms24021704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Jasmonic acid (JA) regulates the production of several plant volatiles that are involved in plant defense mechanisms. In this study, we report that the JA-responsive volatile apocarotenoid, β-cyclocitral (β-cyc), negatively affects abscisic acid (ABA) biosynthesis and induces a defense response against Xanthomonas oryzae pv. oryzae (Xoo), which causes bacterial blight in rice (Oryza sativa L.). JA-induced accumulation of β-cyc was regulated by OsJAZ8, a repressor of JA signaling in rice. Treatment with β-cyc induced resistance against Xoo and upregulated the expression of defense-related genes in rice. Conversely, the expression of ABA-responsive genes, including ABA-biosynthesis genes, was downregulated by JA and β-cyc treatment, resulting in a decrease in ABA levels in rice. β-cyc did not inhibit the ABA-dependent interactions between OsPYL/RCAR5 and OsPP2C49 in yeast cells. Furthermore, we revealed that JA-responsive rice carotenoid cleavage dioxygenase 4b (OsCCD4b) was localized in the chloroplast and produced β-cyc both in vitro and in planta. These results suggest that β-cyc plays an important role in the JA-mediated resistance against Xoo in rice.
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17
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Baoxiang W, Bo X, Yan L, Jingfang L, Zhiguang S, Ming C, Yungao X, Bo Y, Jian L, Jinbo L, Tingmu C, Zhaowei F, Baiguan L, Dayong X, Bello BK. A Novel mechanisms of the signaling cascade associated with the SAPK10-bZIP20-NHX1 synergistic interaction to enhance tolerance of plant to abiotic stress in rice (Oryza sativa L.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 323:111393. [PMID: 35878697 DOI: 10.1016/j.plantsci.2022.111393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
The bzip transcription factors can modulate the transcriptional expressions of target genes by binding specifically to cis-regulatory elements in the promoter region of stress-related genes, hence regulating plant stress resistance. Here, we investigated a stress-responsive transcription factor Osbzip20 under abiotic stresses. The OsbZIP20-GFP fusion protein predominantly aggregated in the nucleus, in accordance with our subcellular localization. OsbZIP20 transcript was observed in all vegetative tissues with highest levels being detected in the seed. Transcription of Osbzip20 was induced by salinity, exsiccation, and abscisic acid. Overexpression of OsbZIP20 in transgenic rice considerably improved tolerance to salt and drought stresses, as well as increased sensitivity to ABA. Furthermore, abiotic stress responsive genes transcript were found to be remarkably elevated in transgenic rice overexpressing OsbZIP20 than in wild-type plants. SAPK10 was discovered to directly interact with and phosphorylate OsbZIP20. Yeast one-hybrid and luciferase assay revealed that OsbZIP20 acted as a transcriptional stimulator. Interestingly, gel shift assay showed that phosphorylated bZIP20 augmented its DNA-binding affinity to the ABRE element of the NHX1 promoter and induced its transcription. In sum, our findings establish a novel signaling pathway associated with the SAPK10-bZIP20-NHX1 synergistic interaction, as well as a new strategy for enhancing rice drought and salt tolerance.
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Affiliation(s)
- Wang Baoxiang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xu Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Liu Yan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Li Jingfang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Sun Zhiguang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Chi Ming
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xing Yungao
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Yang Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Li Jian
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Liu Jinbo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Chen Tingmu
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Fang Zhaowei
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Lu Baiguan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xu Dayong
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China.
| | - Babatunde Kazeem Bello
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China.
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18
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Zou T, Xiong P, Zhou F, Zhou D, Chen H, Li G, Peng K, Zheng K, Han Y, Zhang K, Zhang X, Yang S, Deng Q, Wang S, Zhu J, Liang Y, Sun C, Yu X, Liu H, Wang L, Li P, Li S. Grass-specific ABERRANT MICROSPORE DEVELOPMENT 1 is required for maintaining pollen fertility in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1509-1526. [PMID: 35883135 DOI: 10.1111/tpj.15921] [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: 03/19/2022] [Revised: 07/19/2022] [Accepted: 07/23/2022] [Indexed: 06/15/2023]
Abstract
Pollen development includes a series of biological events that require precise gene regulation. Although several transcription factors (TFs) have been shown to play roles in maintaining pollen fertility, the major regulatory networks underlying tapetum development and pollen wall formation are largely unknown. Herein, we report that ABERRANT MICROSPORE DEVELOPMENT1 (AMD1), a protein annotated previously as unknown protein, is required for tapetum development and pollen exine patterning in rice (Oryza sativa L.). AMD1 encodes a grass-specific protein exhibiting transactivation activity in the nucleus and is spatiotemporally expressed in the tapetum and microspores during pollen development. Further biochemical assays indicate that AMD1 directly activates the transcription of DEFECTIVE POLLEN WALL (DPW) and POLYKETIDE SYNTHASE2 (OsPKS2), which are both implicated in sporopollenin biosynthesis during exine formation. Additionally, AMD1 directly interacts with TAPETUM DEGENERATION RETARDATION (TDR), a key TF involved in the regulation of tapetum degradation and exine formation. Taken together, we demonstrate that AMD1 is an important regulatory component involved in the TDR-mediated regulatory pathway to regulate sporopollenin biosynthesis, tapetum degradation, and exine formation for pollen development. Our work provides insights into the regulatory network of rice sexual reproduction and a useful target for genetic engineering of new male-sterile lines for hybrid rice breeding.
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Affiliation(s)
- Ting Zou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Pingping Xiong
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Fuxing Zhou
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Dan Zhou
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hao Chen
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Gongwen Li
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kun Peng
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kaiyou Zheng
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuhao Han
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kaixuan Zhang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xu Zhang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shangyu Yang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qiming Deng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shiquan Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jun Zhu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yueyang Liang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Changhui Sun
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiumei Yu
- College of Resource, Sichuan Agricultural University, Chengdu, 611130, China
| | - Huainian Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lingxia Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ping Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shuangcheng Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
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19
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Liu L, Li K, Zhou X, Fang C. Integrative Analysis of Metabolome and Transcriptome Reveals the Role of Strigolactones in Wounding-Induced Rice Metabolic Re-Programming. Metabolites 2022; 12:metabo12090789. [PMID: 36144193 PMCID: PMC9501228 DOI: 10.3390/metabo12090789] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Plants have evolved mechanisms to adapt to wounding, a threat occurring separately or concomitantly with other stresses. During the last decades, many efforts have been made to elucidate the wounding signaling transduction. However, we know little about the metabolic re-programming under wounding, let alone whether and how strigolactones (SLs) participate in this progress. Here, we reported a metabolomic and transcriptomic analysis of SLs synthetic and signal mutants in rice before and after wounding. A series of metabolites differentially responded to wounding in the SLs mutants and wild-type rice, among which flavones were enriched. Besides, the SLs mutants accumulated more jasmonic acid (JA) and jasmonyl isoleucine (JA-lle) than the wild-type rice after wounding, suggesting an interplay of SLs and JAs during responding to wounding. Further transcriptome data showed that cell wall, ethylene, and flavones pathways might be affected by wounding and SLs. In addition, we identified candidate genes regulated by SLs and responding to wounding. In conclusion, our work provides new insights into wounding-induced metabolic re-programming and the SLs’ function.
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Affiliation(s)
- Ling Liu
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Kang Li
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Xiujuan Zhou
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Chuanying Fang
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
- Correspondence:
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20
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The Mutation of Rice MEDIATOR25, OsMED25, Induces Rice Bacterial Blight Resistance through Altering Jasmonate- and Auxin-Signaling. PLANTS 2022; 11:plants11121601. [PMID: 35736751 PMCID: PMC9229619 DOI: 10.3390/plants11121601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
Rice bacterial blight disease caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most severe diseases of rice. However, the regulatory mechanisms of rice defense against Xoo remain poorly understood. The rice MEDIATOR25, OsMED25—a subunit of the mediator multiprotein complex that acts as a universal adaptor between transcription factors (TFs) and RNA polymerase II—plays an important role in jasmonic acid (JA)-mediated lateral root development in rice. In this study, we found that OsMED25 also plays an important role in JA- and auxin-mediated resistance responses against rice bacterial blight. The osmed25 loss-of-function mutant exhibited high resistance to Xoo. The expression of JA-responsive defense-related genes regulated by OsMYC2, which is a positive TF in JA signaling, was downregulated in osmed25 mutants. Conversely, expression of some OsMYC2-independent JA-responsive defense-related genes was upregulated in osmed25 mutants. Furthermore, OsMED25 interacted with some AUXIN RESPONSE FACTORS (OsARFs) that regulate auxin signaling, whereas the mutated osmed25 protein did not interact with the OsARFs. The expression of auxin-responsive genes was downregulated in osmed25 mutants, and auxin-induced susceptibility to Xoo was not observed in osmed25 mutants. These results indicate that OsMED25 plays an important role in the stable regulation of JA- and auxin-mediated signaling in rice defense response.
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21
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Nguyen TH, Goossens A, Lacchini E. Jasmonate: A hormone of primary importance for plant metabolism. CURRENT OPINION IN PLANT BIOLOGY 2022; 67:102197. [PMID: 35248983 DOI: 10.1016/j.pbi.2022.102197] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/26/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Over the years, jasmonates (JAs) have become recognized as one of the main plant hormones that regulate stress responses by activating defense programs and the production of specialized metabolites. High JA levels have been associated with reduced plant growth, supposedly as a result of the reallocation of carbon sources from primary growth to the biosynthesis of defense compounds. Recent advances suggest however that tight regulatory networks integrate several sensing pathways to steer plant metabolism, and thereby drive the trade-off between growth and defense. In this review, we discuss how JA influences primary metabolism and how it is connected to light-regulated processes, nutrient sensing and energy metabolism. Finally, we speculate that JA, in a conceptual parallelism with adrenaline for humans, overall boosts cellular processes to keep up with an increased metabolic demand during harsh times.
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Affiliation(s)
- Trang Hieu Nguyen
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium
| | - Alain Goossens
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium.
| | - Elia Lacchini
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium
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22
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Sanya DRA, Syed-Ab-Rahman SF, Jia A, Onésime D, Kim KM, Ahohuendo BC, Rohr JR. A review of approaches to control bacterial leaf blight in rice. World J Microbiol Biotechnol 2022; 38:113. [PMID: 35578069 DOI: 10.1007/s11274-022-03298-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/29/2022] [Indexed: 01/16/2023]
Abstract
The Gram-negative bacteria Xanthomonas oryzae pv. oryzae, the causative agent of bacterial leaf blight (BLB), received attention for being an economically damaging pathogen of rice worldwide. This damage prompted efforts to better understand the molecular mechanisms governing BLB disease progression. This research revealed numerous virulence factors that are employed by this vascular pathogen to invade the host, outcompete host defence mechanisms, and cause disease. In this review, we emphasize the virulence factors and molecular mechanisms that X. oryzae pv. oryzae uses to impair host defences, recent insights into the cellular and molecular mechanisms underlying host-pathogen interactions and components of pathogenicity, methods for developing X. oryzae pv. oryzae-resistant rice cultivars, strategies to mitigate disease outbreaks, and newly discovered genes and tools for disease management. We conclude that the implementation and application of cutting-edge technologies and tools are crucial to avoid yield losses from BLB and ensure food security.
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Affiliation(s)
| | | | - Aiqun Jia
- School of Environmental & Biological Engineering, Nanjing University of Science and Technology, Xiaolingwei No. 200, Xuanwu District, 210014, Nanjing, Jiangsu, China
| | - Djamila Onésime
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, 78350, Jouy-en-Josas, France
| | - Kyung-Min Kim
- School of Applied BioSciences, College of Agriculture & Life Sciences, Kyungpook National University, 80 Daehak-ro, Buk-Gu, 41566, Daegu, Korea
| | - Bonaventure Cohovi Ahohuendo
- Faculty of Agricultural Sciences, University of Abomey-Calavi, 526 Recette Principale, Cotonou 01, 01 BP, Abomey-Calavi, Benin
| | - Jason R Rohr
- Department of Biological Sciences, University of Notre Dame, Eck Institute of Global Health, Environmental Change Initiative, 178 Galvin Life Science Center, 46556, Notre Dame, IN, USA
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23
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Zhou Y, Xu S, Jiang N, Zhao X, Bai Z, Liu J, Yao W, Tang Q, Xiao G, Lv C, Wang K, Hu X, Tan J, Yang Y. Engineering of rice varieties with enhanced resistances to both blast and bacterial blight diseases via CRISPR/Cas9. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:876-885. [PMID: 34890109 PMCID: PMC9055821 DOI: 10.1111/pbi.13766] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 11/25/2021] [Accepted: 12/04/2021] [Indexed: 05/05/2023]
Abstract
Rice blast and bacterial blight represent two of major diseases having devastating impact on the yield of rice in most rice-growing countries. Developments of resistant cultivars are the most economic and effective strategy to control these diseases. Here, we used CRISPR/Cas9-mediated gene editing to rapidly install mutations in three known broad-spectrum blast-resistant genes, Bsr-d1, Pi21 and ERF922, in an indica thermosensitive genic male sterile (TGMS) rice line Longke638S (LK638S). We obtained transgene-free homozygous single or triple mutants in T1 generations. While all single and triple mutants showed increased resistance to rice blast compared with wild type, the erf922 mutants displayed the strongest blast resistance similar with triple mutants. Surprisingly, we found that Pi21 or ERF922 single mutants conferred enhanced resistance to most of tested bacterial blight. Both resistances in mutants were attribute to the up-regulation of SA- and JA-pathway associated genes. Moreover, phenotypic analysis of these single mutants in paddy fields revealed that there were no trade-offs between resistances and main agricultural traits. Together, our study provides a rapid and effective way to generate rice varieties with resistance to both rice blast and bacterial blight.
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Affiliation(s)
- Yanbiao Zhou
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
- College of Life SciencesSouth China Agricultural UniversityGuangzhou510642China
| | - Shichong Xu
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan430070HubeiChina
| | - Nan Jiang
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
| | - Xinhui Zhao
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
- College of Life SciencesSouth China Agricultural UniversityGuangzhou510642China
| | - Zhenan Bai
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
| | - Jinling Liu
- College of AgronomyHunan Agricultural UniversityChangsha410128HunanChina
| | - Wei Yao
- College of AgronomyHunan Agricultural UniversityChangsha410128HunanChina
| | - Qianying Tang
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
| | - Gui Xiao
- State Key Laboratory of Hybrid RiceHunan Hybrid Rice Research CenterChangsha410125HunanChina
| | - Chao Lv
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan430070HubeiChina
| | - Kai Wang
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
| | - Xiaochun Hu
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
| | - Junjie Tan
- State Key Laboratory of Crop Genetics and Germplasm EnhancementInnovation Center for Genome Editing and EngineeringJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing210095China
| | - Yuanzhu Yang
- Key Laboratory of Southern Rice Innovation & ImprovementMinistry of Agriculture and Rural Affairs/Hunan Engineering Laboratory of Disease and Pest Resistant Rice BreedingYuan Longping High‐Tech Agriculture Co., LtdChangsha410001HunanChina
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan430070HubeiChina
- College of AgronomyHunan Agricultural UniversityChangsha410128HunanChina
- State Key Laboratory of Hybrid RiceHunan Hybrid Rice Research CenterChangsha410125HunanChina
- State Key Laboratory of Crop Genetics and Germplasm EnhancementInnovation Center for Genome Editing and EngineeringJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing210095China
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24
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Wan S, Xin XF. Regulation and integration of plant jasmonate signaling: a comparative view of monocot and dicot. J Genet Genomics 2022; 49:704-714. [PMID: 35452856 DOI: 10.1016/j.jgg.2022.04.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 10/18/2022]
Abstract
The phytohormone jasmonate plays a pivotal role in various aspects of plant life, including developmental programs and defense against pests and pathogens. A large body of knowledge on jasmonate biosynthesis, signal transduction as well as its functions in diverse plant processes has been gained in the past two decades. In addition, there exists extensive crosstalk between jasmonate pathway and other phytohormone pathways, such as salicylic acid (SA) and gibberellin (GA), in co-regulation of plant immune status, fine-tuning the balance of plant growth and defense, and so on, which were mostly learned from studies in the dicotyledonous model plants Arabidopsis thaliana and tomato but much less in monocot. Interestingly, existing evidence suggests both conservation and functional divergence in terms of core components of jasmonate pathway, its biological functions and signal integration with other phytohormones, between monocot and dicot. In this review, we summarize the current understanding on JA signal initiation, perception and regulation, and highlight the distinctive characteristics in different lineages of plants.
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Affiliation(s)
- Shiwei Wan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xiu-Fang Xin
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of Chinese Academy of Sciences, Beijing 100049, China; CAS-JIC Center of Excellence for Plant and Microbial Sciences (CEPAMS), Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China.
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25
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Yang X, Gu X, Ding J, Yao L, Gao X, Zhang M, Meng Q, Wei S, Fu J. Gene expression analysis of resistant and susceptible rice cultivars to sheath blight after inoculation with Rhizoctonia solani. BMC Genomics 2022; 23:278. [PMID: 35392815 PMCID: PMC8991730 DOI: 10.1186/s12864-022-08524-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 03/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rice sheath blight, caused by Rhizoctonia solani Kühn (teleomorph: Thanatephorus cucumeris), is one of the most severe diseases in rice (Oryza sativa L.) worldwide. Studies on resistance genes and resistance mechanisms of rice sheath blight have mainly focused on indica rice. Rice sheath blight is a growing threat to rice production with the increasing planting area of japonica rice in Northeast China, and it is therefore essential to explore the mechanism of sheath blight resistance in this rice subspecies. RESULTS In this study, RNA-seq technology was used to analyse the gene expression changes of leaf sheath at 12, 24, 36, 48, and 72 h after inoculation of the resistant cultivar 'Shennong 9819' and susceptible cultivar 'Koshihikari' with R. solani. In the early stage of R. solani infection of rice leaf sheaths, the number of differentially expressed genes (DEGs) in the inoculated leaf sheaths of resistant and susceptible cultivars showed different regularity. After inoculation, the number of DEGs in the resistant cultivar fluctuated, while the number of DEGs in the susceptible cultivar increased first and then decreased. In addition, the number of DEGs in the susceptible cultivar was always higher than that in the resistant cultivar. After inoculation with R. solani, the overall transcriptome changes corresponding to multiple biological processes, molecular functions, and cell components were observed in both resistant and susceptible cultivars. These included metabolic process, stimulus response, biological regulation, catalytic activity, binding and membrane, and they were differentially regulated. The phenylalanine metabolic pathway; tropane, piperidine, and pyridine alkaloid biosynthesis pathways; and plant hormone signal transduction were significantly enriched in the early stage of inoculation of the resistant cultivar Shennong 9819, but not in the susceptible cultivar Koshihikari. This indicates that the response of the resistant cultivar Shennong 9819 to pathogen stress was faster than that of the susceptible cultivar. The expression of plant defense response marker PR1b gene, transcription factor OsWRKY30 and OsPAL1 and OsPAL6 genes that induce plant resistance were upregulated in the resistant cultivar. These data suggest that in the early stage of rice infection by R. solani, there is a pathogen-induced defence system in resistant rice cultivars, involving the expression of PR genes, key transcription factors, PAL genes, and the enrichment of defence-related pathways. CONCLUSION The transcriptome data revealed the molecular and biochemical differences between resistant and susceptible cultivars of rice after inoculation with R. solani, indicating that resistant cultivars have an immune response mechanism in the early stage of pathogen infection. Disease resistance is related to the overexpression of PR genes, key transcriptome factors, and PAL genes, which are potential targets for crop improvement.
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Affiliation(s)
- Xiaohe Yang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, Liaoning, China.,Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Xin Gu
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Junjie Ding
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Liangliang Yao
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Xuedong Gao
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Maoming Zhang
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Qingying Meng
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi, 154007, Heilongjiang, China
| | - Songhong Wei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, Liaoning, China.
| | - Junfan Fu
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, Liaoning, China.
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26
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Li Z, Wei X, Tong X, Zhao J, Liu X, Wang H, Tang L, Shu Y, Li G, Wang Y, Ying J, Jiao G, Hu H, Hu P, Zhang J. The OsNAC23-Tre6P-SnRK1a feed-forward loop regulates sugar homeostasis and grain yield in rice. MOLECULAR PLANT 2022; 15:706-722. [PMID: 35093592 DOI: 10.1016/j.molp.2022.01.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/15/2022] [Accepted: 01/24/2022] [Indexed: 05/14/2023]
Abstract
Tre6P (trehalose-6-phosphate) mediates sensing of carbon availability to maintain sugar homeostasis in plants, which underpins crop yield and resilience. However, how Tre6P responds to fluctuations in sugar levels and regulates the utilization of sugars for growth remains to be addressed. Here, we report that the sugar-inducible rice NAC transcription factor OsNAC23 directly represses the transcription of the Tre6P phosphatase gene TPP1 to simultaneously elevate Tre6P and repress trehalose levels, thus facilitating carbon partitioning from source to sink organs. Meanwhile, OsNAC23 and Tre6P suppress the transcription and enzyme activity of SnRK1a, a low-carbon sensor and antagonist of OsNAC23, to prevent the SnRK1a-mediated phosphorylation and degradation of OsNAC23. Thus, OsNAC23, Tre6P, and SnRK1a form a feed-forward loop to sense sugar and maintain sugar homeostasis by transporting sugars to sink organs. Importantly, plants over-expressing OsNAC23 exhibited an elevated photosynthetic rate, sugar transport, and sink organ size, which consistently increased rice yields by 13%-17% in three elite-variety backgrounds and two locations, suggesting that manipulation of OsNAC23 expression has great potential for rice improvement. Collectively, these findings enhance our understanding of Tre6P-mediated sugar signaling and homeostasis, and provide a new strategy for genetic improvement of rice and possibly also other crops.
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Affiliation(s)
- Zhiyong Li
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiangjin Wei
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xiaohong Tong
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Juan Zhao
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xixi Liu
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Huimei Wang
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Liqun Tang
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yazhou Shu
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Guanghao Li
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yifeng Wang
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Jiezheng Ying
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Guiai Jiao
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Honghong Hu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Peisong Hu
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China.
| | - Jian Zhang
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China.
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27
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Qiu J, Xie J, Chen Y, Shen Z, Shi H, Naqvi NI, Qian Q, Liang Y, Kou Y. Warm temperature compromises JA-regulated basal resistance to enhance Magnaporthe oryzae infection in rice. MOLECULAR PLANT 2022; 15:723-739. [PMID: 35217224 DOI: 10.1016/j.molp.2022.02.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/24/2022] [Accepted: 02/20/2022] [Indexed: 05/20/2023]
Abstract
Changes in global temperatures profoundly affect the occurrence of plant diseases. It is well known that rice blast can easily become epidemic in relatively warm weather. However, the molecular mechanism remains unclear. In this study, we show that enhanced blast development at a warm temperature (22°C) compared with the normal growth temperature (28°C) is rice plant-determined. Comparative transcriptome analysis revealed that jasmonic acid (JA) biosynthesis and signaling genes in rice could be effectively induced by Magnaporthe oryzae at 28°C but not at 22°C. Phenotypic analyses of the osaoc1 and osmyc2 mutants, OsCOI1 RNAi lines, and OsMYC2-OE plants further demonstrated that compromised M. oryzae-induced JA biosynthesis and signaling lead to enhanced blast susceptibility at the warm temperature. Consistent with these results, we found that exogenous application of methyl jasmonate served as an effective strategy for improving blast resistance under the warm environmental conditions. Furthermore, decreased activation of JA signaling resulted in the downregulated expression of some key basal resistance genes at 22°C when compared with 28°C. Among these affected genes, OsCEBiP (chitin elicitor-binding protein precursor) was found to be directly regulated by OsMYB22 and its interacting protein OsMYC2, a key component of JA signaling, and this contributed to temperature-modulated blast resistance. Taken together, these results suggest that warm temperature compromises basal resistance in rice and enhances M. oryzae infection by reducing JA biosynthesis and signaling, providing potential new strategies for managing rice blast disease under warm climate conditions.
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Affiliation(s)
- Jiehua Qiu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Junhui Xie
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Ya Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Zhenan Shen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Huanbin Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Naweed I Naqvi
- Temasek Life Sciences Laboratory, and Department of Biological Sciences, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
| | - Qian Qian
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yan Liang
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yanjun Kou
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China.
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28
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Li C, Xu M, Cai X, Han Z, Si J, Chen D. Jasmonate Signaling Pathway Modulates Plant Defense, Growth, and Their Trade-Offs. Int J Mol Sci 2022; 23:ijms23073945. [PMID: 35409303 PMCID: PMC8999811 DOI: 10.3390/ijms23073945] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 02/06/2023] Open
Abstract
Lipid-derived jasmonates (JAs) play a crucial role in a variety of plant development and defense mechanisms. In recent years, significant progress has been made toward understanding the JA signaling pathway. In this review, we discuss JA biosynthesis, as well as its core signaling pathway, termination mechanisms, and the evolutionary origin of JA signaling. JA regulates not only plant regeneration, reproductive growth, and vegetative growth but also the responses of plants to stresses, including pathogen as well as virus infection, herbivore attack, and abiotic stresses. We also focus on the JA signaling pathway, considering its crosstalk with the gibberellin (GA), auxin, and phytochrome signaling pathways for mediation of the trade-offs between growth and defense. In summary, JA signals regulate multiple outputs of plant defense and growth and act to balance growth and defense in order to adapt to complex environments.
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Affiliation(s)
- Cong Li
- Correspondence: (C.L.); (D.C.)
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29
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Wang Y, Pruitt RN, Nürnberger T, Wang Y. Evasion of plant immunity by microbial pathogens. Nat Rev Microbiol 2022; 20:449-464. [PMID: 35296800 DOI: 10.1038/s41579-022-00710-3] [Citation(s) in RCA: 122] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2022] [Indexed: 12/21/2022]
Abstract
Plant pathogenic viruses, bacteria, fungi and oomycetes cause destructive diseases in natural habitats and agricultural settings, thereby threatening plant biodiversity and global food security. The capability of plants to sense and respond to microbial infection determines the outcome of plant-microorganism interactions. Host-adapted microbial pathogens exploit various infection strategies to evade or counter plant immunity and eventually establish a replicative niche. Evasion of plant immunity through dampening host recognition or the subsequent immune signalling and defence execution is a crucial infection strategy used by different microbial pathogens to cause diseases, underpinning a substantial obstacle for efficient deployment of host genetic resistance genes for sustainable disease control. In this Review, we discuss current knowledge of the varied strategies microbial pathogens use to evade the complicated network of plant immunity for successful infection. In addition, we discuss how to exploit this knowledge to engineer crop resistance.
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Affiliation(s)
- Yan Wang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.,The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China
| | - Rory N Pruitt
- Centre for Molecular Biology of Plants (ZMBP), University of Tübingen, Tübingen, Germany
| | - Thorsten Nürnberger
- Centre for Molecular Biology of Plants (ZMBP), University of Tübingen, Tübingen, Germany.,Department of Biochemistry, University of Johannesburg, Johannesburg, South Africa
| | - Yuanchao Wang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China. .,The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, China.
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30
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Wang H, Tong X, Tang L, Wang Y, Zhao J, Li Z, Liu X, Shu Y, Yin M, Adegoke TV, Liu W, Wang S, Xu H, Ying J, Yuan W, Yao J, Zhang J. RLB (RICE LATERAL BRANCH) recruits PRC2-mediated H3K27 tri-methylation on OsCKX4 to regulate lateral branching. PLANT PHYSIOLOGY 2022; 188:460-476. [PMID: 34730827 PMCID: PMC8774727 DOI: 10.1093/plphys/kiab494] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 09/24/2021] [Indexed: 05/26/2023]
Abstract
Lateral branches such as shoot and panicle are determining factors and target traits for rice (Oryza sativa L.) yield improvement. Cytokinin promotes rice lateral branching; however, the mechanism underlying the fine-tuning of cytokinin homeostasis in rice branching remains largely unknown. Here, we report the map-based cloning of RICE LATERAL BRANCH (RLB) encoding a nuclear-localized, KNOX-type homeobox protein from a rice cytokinin-deficient mutant showing more tillers, sparser panicles, defected floret morphology as well as attenuated shoot regeneration from callus. RLB directly binds to the promoter and represses the transcription of OsCKX4, a cytokinin oxidase gene with high abundance in panicle branch meristem. OsCKX4 over-expression lines phenocopied rlb, which showed upregulated OsCKX4 levels. Meanwhile, RLB physically binds to Polycomb repressive complex 2 (PRC2) components OsEMF2b and co-localized with H3K27me3, a suppressing histone modification mediated by PRC2, in the OsCKX4 promoter. We proposed that RLB recruits PRC2 to the OsCKX4 promoter to epigenetically repress its transcription, which suppresses the catabolism of cytokinin, thereby promoting rice lateral branching. Moreover, antisense inhibition of OsCKX4 under the LOG promoter successfully increased panicle size and spikelet number per plant without affecting other major agronomic traits. This study provides insight into cytokinin homeostasis, lateral branching in plants, and also promising target genes for rice genetic improvement.
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Affiliation(s)
- Huimei Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xiaohong Tong
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Liqun Tang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yifeng Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Juan Zhao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Zhiyong Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xixi Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yazhou Shu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Man Yin
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Tosin Victor Adegoke
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Wanning Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Shuang Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Huayu Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Jiezheng Ying
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Wenya Yuan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Jialing Yao
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jian Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
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Tsers I, Meshcherov A, Gogoleva O, Petrova O, Gogoleva N, Ponomareva M, Gogolev Y, Korzun V, Gorshkov V. Alterations in the Transcriptome of Rye Plants following the Microdochium nivale Infection: Identification of Resistance/Susceptibility-Related Reactions Based on RNA-Seq Analysis. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122723. [PMID: 34961191 PMCID: PMC8706160 DOI: 10.3390/plants10122723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/03/2021] [Accepted: 12/08/2021] [Indexed: 05/16/2023]
Abstract
Microdochium nivale is a progressive and devastating phytopathogen that causes different types of cereal crop and grass diseases that are poorly characterized at the molecular level. Although rye (Secale cereale L.) is one of the most resistant crops to most of the phytopathogens, it is severely damaged by M. nivale. The recent high-quality chromosome-scale assembly of rye genome has improved whole-genome studies of this crop. In the present work, the first transcriptome study of the M. nivale-infected crop plant (rye) with the detailed functional gene classification was carried out, along with the physiological verification of the RNA-Seq data. The results revealed plant reactions that contributed to their resistance or susceptibility to M. nivale. Phytohormone abscisic acid was shown to promote plant tolerance to M. nivale. Flavonoids were proposed to contribute to plant resistance to this pathogen. The upregulation of plant lipase encoding genes and the induction of lipase activity in M. nivale-infected plants revealed in our study were presumed to play an important role in plant susceptibility to the studied phytopathogen. Our work disclosed important aspects of plant-M. nivale interactions, outlined the directions for future studies on poorly characterized plant diseases caused by this phytopathogen, and provided new opportunities to improve cereals breeding and food security strategies.
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Affiliation(s)
- Ivan Tsers
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, 420111 Kazan, Russia
| | - Azat Meshcherov
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, 420111 Kazan, Russia
| | - Olga Gogoleva
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, 420111 Kazan, Russia
| | - Olga Petrova
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
| | - Natalia Gogoleva
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
| | - Mira Ponomareva
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
| | - Yuri Gogolev
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
| | - Viktor Korzun
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
- KWS SAAT SE & Co. KGaA, Grimsehlstr. 31, 37555 Einbeck, Germany
| | - Vladimir Gorshkov
- Federal Research Center Kazan Scientific Center of the Russian Academy of Sciences, 420111 Kazan, Russia; (I.T.); (A.M.); (O.G.); (O.P.); (N.G.); (M.P.); (Y.G.); (V.K.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, 420111 Kazan, Russia
- Correspondence:
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Zhao Q, Yang Q, Wang Z, Sui Y, Wang Q, Liu J, Zhang H. Analysis of long non-coding RNAs and mRNAs in harvested kiwifruit in response to the yeast antagonist, Wickerhamomyces anomalus. Comput Struct Biotechnol J 2021; 19:5589-5599. [PMID: 34849193 PMCID: PMC8601023 DOI: 10.1016/j.csbj.2021.09.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 01/03/2023] Open
Abstract
W. anomalus exhibits good
biocontrol activity against blue and gray mold on
kiwifruit. LncRNAs in kiwifruit may be involved in activating
plant hormone signal transduction pathways in response to the
biocontrol yeast. LncRNAs in kiwifruit may modulate the production of
related TFs and secondary metabolites. The expression of downstream defense-related genes
in kiwifruit increases in response to the application of the
biocontrol yeast.
Biological control utilizing antagonistic yeasts is an
effective method for controlling postharvest diseases. Long non-coding RNAs
(lncRNAs) have been found to be involved in a variety of plant growth and
development processes, including those associated with plant disease resistance.
In the present study, the yeast antagonist, Wickerhamomyces
anomalus, was found to strongly inhibit postharvest blue mold
(Penicillium expansum) and gray mold
(Botrytis cinerea) decay of kiwifruit. Additionally,
lncRNA high-throughput sequencing and bioinformatic analysis was used to
identify lncRNAs in W. anomalus-treated wounds in
kiwifruit and predict their function based on putative target genes. Our results
indicate that lncRNAs may be involved in increasing ethylene (ET), jasmonic acid
(JA), abscisic acid (ABA), and auxin (IAA) levels, as well as activating signal
transduction pathways that regulate the expression of several transcription
factors (WRKY72, WRKY53,
JUB1AP2). These transcription factors (TFs) then
mediate the expression of downstream, defense-related genes
(ZAR1, PAD4, CCR4,
NPR4) and the synthesis of secondary metabolites, thus,
potentially enhancing disease resistance. Notably, by stimulating the
accumulation of antifungal compounds, such as phenols and lignin, disease
resistance in kiwifruit was enhanced. Our study provides new information on the
mechanism underlying the induction of disease resistance in kiwifruit by
W. anomalus, as well as a new disease resistance
strategy that can be used to enhance the defense response of fruit to pathogenic
fungi.
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Affiliation(s)
- Qianhua Zhao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Zhenshuo Wang
- Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Yuan Sui
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China
| | - Qi Wang
- Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Jia Liu
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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OsABF1 Represses Gibberellin Biosynthesis to Regulate Plant Height and Seed Germination in Rice ( Oryza sativa L.). Int J Mol Sci 2021; 22:ijms222212220. [PMID: 34830102 PMCID: PMC8622533 DOI: 10.3390/ijms222212220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/04/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022] Open
Abstract
Gibberellins (GAs) are diterpenoid phytohormones regulating various aspects of plant growth and development, such as internode elongation and seed germination. Although the GA biosynthesis pathways have been identified, the transcriptional regulatory network of GA homeostasis still remains elusive. Here, we report the functional characterization of a GA-inducible OsABF1 in GA biosynthesis underpinning plant height and seed germination. Overexpression of OsABF1 produced a typical GA-deficient phenotype with semi-dwarf and retarded seed germination. Meanwhile, the phenotypes could be rescued by exogenous GA3, suggesting that OsABF1 is a key regulator of GA homeostasis. OsABF1 could directly suppress the transcription of green revolution gene SD1, thus reducing the endogenous GA level in rice. Moreover, OsABF1 interacts with and transcriptionally antagonizes to the polycomb repression complex component OsEMF2b, whose mutant showed as similar but more severe phenotype to OsABF1 overexpression lines. It is suggested that OsABF1 recruits RRC2-mediated H3K27me3 deposition on the SD1 promoter, thus epigenetically silencing SD1 to maintain the GA homeostasis for growth and seed germination. These findings shed new insight into the functions of OsABF1 and regulatory mechanism underlying GA homeostasis in rice.
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Xie W, Ke Y, Cao J, Wang S, Yuan M. Knock out of transcription factor WRKY53 thickens sclerenchyma cell walls, confers bacterial blight resistance. PLANT PHYSIOLOGY 2021; 187:1746-1761. [PMID: 34618083 PMCID: PMC8566205 DOI: 10.1093/plphys/kiab400] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/04/2021] [Indexed: 05/07/2023]
Abstract
Plant cell walls are the first physical barrier against pathogen invasion, and plants thicken the cell wall to strengthen it and restrain pathogen infection. Bacterial blight is a devastating rice (Oryza sativa) disease caused by Xanthomonas oryzae pv. oryzae (Xoo), which typically enters the rice leaf through hydathodes and spreads throughout the plant via the xylem. Xoo interacts with cells surrounding the xylem vessel of a vascular bundle, but whether rice strengthens the sclerenchyma cell walls to stop pathogen proliferation is unclear. Here, we found that a WRKY protein, OsWRKY53, negatively confers resistance to Xoo by strengthening the sclerenchyma cell walls of the vascular bundle. OsMYB63 acts as a transcriptional activator and promotes the expression of three secondary cell wall-related cellulose synthase genes to boost cellulose accumulation, resulting in thickened sclerenchyma cell walls. Both OsWRKY53 and OsMYB63 are abundantly expressed in sclerenchyma cells of leaf vascular bundles. OsWRKY53 functions as a transcriptional repressor and acts genetically upstream of OsMYB63 to suppress its expression. The OsWRKY53-overexpressing and OsMYB63 knockout plants had thinner sclerenchyma cell walls, showing susceptibility to Xoo, while the OsWRKY53 knockout and OsMYB63-overexpressing plants had thicker sclerenchyma cell walls, exhibiting resistance to Xoo. These results suggest that modifying these candidate genes provides a strategy to improve rice resistance to bacterial pathogens.
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Affiliation(s)
- Wenya Xie
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yinggen Ke
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Jianbo Cao
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Shiping Wang
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Meng Yuan
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
- Author for communication:
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Yan L, Baoxiang W, Jingfang L, Zhiguang S, Ming C, Yungao X, Bo X, Bo Y, Jian L, Jinbo L, Tingmu C, Zhaowei F, Baiguan L, Dayong X, Bello BK. A novel SAPK10-WRKY87-ABF1 biological pathway synergistically enhance abiotic stress tolerance in transgenic rice (Oryza sativa). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 168:252-262. [PMID: 34656861 DOI: 10.1016/j.plaphy.2021.10.006] [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: 07/27/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 05/24/2023]
Abstract
WRKY transcription factors play a role in a variety of biological processes. Several studies have revealed that abiotic stress regulates the transcription of a large number of WRKY genes. In this study, we report the identification of a novel 'SAPK10-WRKY87-ABF1' biological pathway, through which they harmoniously enhance drought and salinity tolerance. We generated OsWRKY87-overexpressing transgenic rice and found that the transgenic seedlings exhibited significantly improved drought and salinity stress tolerance. Subcellular localization in rice seedling protoplast revealed that OsWRKY87-GFP fusion protein mostly accumulated in the nucleus, suggesting that OsWRKY87 is a nucleus-localized protein, in line with the predicted function of OsWRKY87 as a transcription factor. In vivo interaction between SAPK10 and WRKY87 was demonstrated by Yeast two-hybrid-assay. In addition, phosphorylation assays showed that SAPK10 exhibits autophosphorylation activity on the 177th serine, enabling it to phosphorylate WRKY87. OsWRKY87 functioned as a transcriptional initiator, according to a yeast one-hybrid assay and a luciferase assay. Remarkably, gel mobility shift assay showed that phosphorylated WRKY87 enhances its DNA-binding ability to the W-box cis-element of ABF1 promoter and activated its transcription, thereby elevating the ABF1 transcription and improving drought and salinity tolerance. Overall, our findings revealed a novel 'SAPK10- WRKY87-ABF1' module, which synergistically interacts to improve drought and salt tolerance in rice (Oryza sativa).
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Affiliation(s)
- Liu Yan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Wang Baoxiang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Li Jingfang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Sun Zhiguang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Chi Ming
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Xing Yungao
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Xu Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Yang Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Li Jian
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Liu Jinbo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Chen Tingmu
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Fang Zhaowei
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Lu Baiguan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China
| | - Xu Dayong
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China.
| | - Babatunde Kazeem Bello
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang 222006, China.
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Long T, Xu B, Hu Y, Wang Y, Mao C, Wang Y, Zhang J, Liu H, Huang H, Liu Y, Yu G, Zhao C, Li Y, Huang Y. Genome-wide identification of ZmSnRK2 genes and functional analysis of ZmSnRK2.10 in ABA signaling pathway in maize (Zea mays L). BMC PLANT BIOLOGY 2021; 21:309. [PMID: 34210268 PMCID: PMC8246669 DOI: 10.1186/s12870-021-03064-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 05/25/2021] [Indexed: 05/12/2023]
Abstract
BACKGROUND Phytohormone abscisic acid (ABA) is involved in the regulation of a wide range of biological processes. In Arabidopsis, it has been well-known that SnRK2s are the central components of the ABA signaling pathway that control the balance between plant growth and stress response, but the functions of ZmSnRK2 in maize are rarely reported. Therefore, the study of ZmSnRK2 is of great importance to understand the ABA signaling pathways in maize. RESULTS In this study, 14 ZmSnRK2 genes were identified in the latest version of maize genome database. Phylogenetic analysis revealed that ZmSnRK2s are divided into three subclasses based on their diversity of C-terminal domains. The exon-intron structures, phylogenetic, synteny and collinearity analysis indicated that SnRK2s, especially the subclass III of SnRK2, are evolutionally conserved in maize, rice and Arabidopsis. Subcellular localization showed that ZmSnRK2 proteins are localized in the nucleus and cytoplasm. The RNA-Seq datasets and qRT-PCR analysis showed that ZmSnRK2 genes exhibit spatial and temporal expression patterns during the growth and development of different maize tissues, and the transcript levels of some ZmSnRK2 genes in kernel are significantly induced by ABA and sucrose treatment. In addition, we found that ZmSnRK2.10, which belongs to subclass III, is highly expressed in kernel and activated by ABA. Overexpression of ZmSnRK2.10 partially rescued the ABA-insensitive phenotype of snrk2.2/2.3 double and snrk2.2/2.3/2.6 triple mutants and led to delaying plant flowering in Arabidopsis. CONCLUSION The SnRK2 gene family exhibits a high evolutionary conservation and has expanded with whole-genome duplication events in plants. The ZmSnRK2s expanded in maize with whole-genome and segmental duplication, not tandem duplication. The expression pattern analysis of ZmSnRK2s in maize offers important information to study their functions. Study of the functions of ZmSnRK.10 in Arabidopsis suggests that the ABA-dependent members of SnRK2s are evolutionarily conserved in plants. Our study elucidated the structure and evolution of SnRK2 genes in plants and provided a basis for the functional study of ZmSnRK2s protein in maize.
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Affiliation(s)
- Tiandan Long
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, 611130 Sichuan China
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Binjie Xu
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Yufeng Hu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, 611130 Sichuan China
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Yayun Wang
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Changqing Mao
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Yongbin Wang
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Junjie Zhang
- College of Life Science, Sichuan Agricultural University, Ya’an, 625014 Sichuan China
| | - Hanmei Liu
- College of Life Science, Sichuan Agricultural University, Ya’an, 625014 Sichuan China
| | - Huanhuan Huang
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Yinghong Liu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Guowu Yu
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Chunzhao Zhao
- Shanghai Center for Plant Stress Biology and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032 China
| | - Yangping Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, 611130 Sichuan China
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
| | - Yubi Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, 611130 Sichuan China
- College of Agronomy, Sichuan Agricultural University, No.211 Huimin Rd., Wenjiang Dist, Chengdu, 611130 Sichuan China
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Liu H, Liu B, Lou S, Bi H, Tang H, Tong S, Song Y, Chen N, Zhang H, Jiang Y, Liu J. CHYR1 ubiquitinates the phosphorylated WRKY70 for degradation to balance immunity in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2021; 230:1095-1109. [PMID: 33492673 DOI: 10.1111/nph.17231] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/15/2021] [Indexed: 05/24/2023]
Abstract
It is critically important for plants to control the trade-off between normal growth and pathogen immunity. However, the underlying molecular mechanism remains largely unknown. Here we report such a mechanism controlled by WRKY70 and its partner CHYR1 in Arabidopsis. We found that both levels of the WRKY70 target gene SARD1 and the phosphorylated forms of WRKY70 were increased in WRKY70OE plants upon Pst DC3000 infection. Mechanistically, phosphorylation of WRKY70 at Thr22 and Ser34 occurs, which then activates SARD1 expression through binding to a WT box. Phosphorylated WRKY70 is degraded by 26S proteasome via CHYR1 when resuming normal growth after infection. In addition, nonphosphorylated WRKY70 represses SARD1 expression by binding to both W (inhibitory activity site) and WT (active activity site) boxes. The binding of WRKY70 to alternative cis-elements of SARD1 through a phosphorylation-mediated switch controlled by CHYR1 contributes to modulating the balance between immunity and growth.
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Affiliation(s)
- Huanhuan Liu
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Bao Liu
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Shangling Lou
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Hao Bi
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Hu Tang
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Shaofei Tong
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Yan Song
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Ningning Chen
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Han Zhang
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Yuanzhong Jiang
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
| | - Jianquan Liu
- Key Laboratory for Bio-resources and Eco-environment, College of Life Science & State Key, Laboratory of Hydraulics & Mountain River Engineering, Sichuan University, Chengdu, 610065, China
- State Key Laboratory of Grassland Agro-ecosystem, Institute of Innovation Ecology, Lanzhou University, Lanzhou, 730000, China
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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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Tian D, Chen Z, Lin Y, Chen Z, Bui KT, Wang Z, Wang F. Weighted Gene Co-Expression Network Coupled with a Critical-Time-Point Analysis during Pathogenesis for Predicting the Molecular Mechanism Underlying Blast Resistance in Rice. RICE (NEW YORK, N.Y.) 2020; 13:81. [PMID: 33306159 PMCID: PMC7732884 DOI: 10.1186/s12284-020-00439-8] [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: 06/15/2020] [Accepted: 11/13/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Rice blast, caused by the ascomycete fungus M. oryzae, is one of the most important diseases of rice. Although many blast resistance (R) genes have been identified and deployed in rice varieties, the molecular mechanisms responsible for the R gene-mediated defense responses are yet not fully understood. RESULTS In this study, we used comparative transcriptomic analysis to explore the molecular mechanism involved in Piz-t-mediated resistance in a transgenic line containing Piz-t (NPB-Piz-t) compared to Nipponbare (NPB). Clustering and principal component analysis (PCA) revealed that the time-point at 24-h post inoculation (hpi) was the most important factor distinguishing the four time-points, which consisted of four genes of mitogen-activated protein kinases (MAPKs) signaling pathway, one gene related to WRKY DNA-binding domain containing protein, five pathogenesis-related protein (OsPR1s) genes, and three genes of R proteins involving in the most significant protein-protein interaction (PPI) pathway. Using weighted gene co-expression network analysis (WGCNA) to investigate RNA-seq data across 0, 24, 48, and 72 hpi, nine modules with similar patterns expression pattern (SEP) and three modules with differential expression pattern (DEP) between NPB-Piz-t and NPB across 0, 24, 48, and 72 hpi with KJ201 (referred to as Piz-t-KJ201 and NPB-KJ201) were identified. Among these the most representative SEP green-yellow module is associated with photosynthesis, and DEP pink module comprised of two specific expressed nucleotide-binding domain and leucine-rich repeat (NLR) genes of LOC_Os06g17900 and LOC_Os06g17920 of Pi2/9 homologous, three NLR genes of LOC_Os11g11810, LOC_Os11g11770, and LOC_Os11g11920 which are putatively associated with important agronomic traits, and a B3 DNA binding domain containing protein related genes (LOC_Os10g39190). Knockout of LOC_Os10g39190 via CRISPR-Cas9 resulted in plant death at the seedling stage. CONCLUSIONS The research suggested that Piz-t and multiple NLR network might play important roles in the regulation of the resistance response in the Piz-t-KJ201 interaction system. The identified genes provide an NLR repository to study the rice-M. oryzae interaction system and facilitate the breeding of blast-resistant cultivars in the future.
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Affiliation(s)
- Dagang Tian
- Biotechnology Research Institute, Fujian Provincial Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China.
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China.
| | - Zaijie Chen
- Biotechnology Research Institute, Fujian Provincial Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Yan Lin
- Biotechnology Research Institute, Fujian Provincial Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Ziqiang Chen
- Biotechnology Research Institute, Fujian Provincial Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Khuynh The Bui
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Zonghua Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China.
| | - Feng Wang
- Biotechnology Research Institute, Fujian Provincial Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China.
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Wang Y, Hou Y, Qiu J, Wang H, Wang S, Tang L, Tong X, Zhang J. Abscisic acid promotes jasmonic acid biosynthesis via a 'SAPK10-bZIP72-AOC' pathway to synergistically inhibit seed germination in rice (Oryza sativa). THE NEW PHYTOLOGIST 2020; 228:1336-1353. [PMID: 32583457 PMCID: PMC7689938 DOI: 10.1111/nph.16774] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/15/2020] [Indexed: 05/18/2023]
Abstract
Abscisic acid (ABA) and jasmonic acid (JA) both inhibit seed germination, but their interactions during this process remain elusive. Here, we report the identification of a 'SAPK10-bZIP72-AOC' pathway, through which ABA promotes JA biosynthesis to synergistically inhibit rice seed germination. Using biochemical interaction and phosphorylation assays, we show that SAPK10 exhibits autophosphorylation activity on the 177th serine, which enables it to phosphorylate bZIP72 majorly on 71st serine. The SAPK10-dependent phosphorylation enhances bZIP72 protein stability as well as the DNA-binding ability to the G-box cis-element of AOC promoter, thereby elevating the AOC transcription and the endogenous concentration of JA. Blocking of JA biosynthesis significantly alleviated the ABA sensitivity on seed germination, suggesting that ABA-imposed inhibition partially relied on the elevated concentration of JA. Our findings shed a novel insight into the molecular networks of ABA-JA synergistic interaction during rice seed germination.
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Affiliation(s)
- Yifeng Wang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Yuxuan Hou
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Jiehua Qiu
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Huimei Wang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Shuang Wang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
- College of Life ScienceYangtze UniversityJingzhou434025China
| | - Liqun Tang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Xiaohong Tong
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
| | - Jian Zhang
- State Key Laboratory of Rice BiologyChina National Rice Research InstituteHangzhou311400China
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41
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Baruah I, Baldodiya GM, Sahu J, Baruah G. Dissecting the Role of Promoters of Pathogen-sensitive Genes in Plant Defense. Curr Genomics 2020; 21:491-503. [PMID: 33214765 PMCID: PMC7604749 DOI: 10.2174/1389202921999200727213500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/15/2020] [Accepted: 06/30/2020] [Indexed: 11/22/2022] Open
Abstract
Plants inherently show resistance to pathogen attack but are susceptible to multiple bacteria, viruses, fungi, and phytoplasmas. Diseases as a result of such infection leads to the deterioration of crop yield. Several pathogen-sensitive gene activities, promoters of such genes, associated transcription factors, and promoter elements responsible for crosstalk between the defense signaling pathways are involved in plant resistance towards a pathogen. Still, only a handful of genes and their promoters related to plant resistance have been identified to date. Such pathogen-sensitive promoters are accountable for elevating the transcriptional activity of certain genes in response to infection. Also, a suitable promoter is a key to devising successful crop improvement strategies as it ensures the optimum expression of the required transgene. The study of the promoters also helps in mining more details about the transcription factors controlling their activities and helps to unveil the involvement of new genes in the pathogen response. Therefore, the only way out to formulate new solutions is by analyzing the molecular aspects of these promoters in detail. In this review, we provided an overview of the promoter motifs and cis-regulatory elements having specific roles in pathogen attack response. To elaborate on the importance and get a vivid picture of the pathogen-sensitive promoter sequences, the key motifs and promoter elements were analyzed with the help of PlantCare and interpreted with available literature. This review intends to provide useful information for reconstructing the gene networks underlying the resistance of plants against pathogens.
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Affiliation(s)
| | | | - Jagajjit Sahu
- Address correspondence to these authors at the Department of Mycology & Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University (BHU), Varanasi-221005, Uttar Pradesh, India;, E-mail: ; Environment Division, Assam Science Technology & Environment Council, Bigyan Bhawan, Guwahati-781005, Assam, India; E-mail:
| | - Geetanjali Baruah
- Address correspondence to these authors at the Department of Mycology & Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University (BHU), Varanasi-221005, Uttar Pradesh, India;, E-mail: ; Environment Division, Assam Science Technology & Environment Council, Bigyan Bhawan, Guwahati-781005, Assam, India; E-mail:
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42
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Liu J, Sun L, Chen Y, Wei L, Hao Y, Yu Z, Wang Z, Zhang H, Zhang X, Li M, Wang H, Xiao J, Wang X. The Regulatory Network of CMPG1-V in Wheat- Blumeria graminis f. sp. tritici Interaction Revealed by Temporal Profiling Using RNA-Seq. Int J Mol Sci 2020; 21:ijms21175967. [PMID: 32825128 PMCID: PMC7504233 DOI: 10.3390/ijms21175967] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/09/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022] Open
Abstract
Wheat powdery mildew (Pm), caused by Blumeria graminis f. sp. tritici (Bgt), is a prevalent fungal disease. The diploid wheat relative Haynaldia villosa (H. villosa) showed broad-spectrum resistance (BSR) to Pm. A previous study reported an E3 ligase gene, CMPG1-V from H. villosa, showing BSR to Pm. To elucidate the regulatory network mediated by CMPG1-V, in this study, gene expression profiling of CMPG1-V transgenic plant (CMPG1-VOE) and its receptor Yangmai 158 was analyzed and compared after Bgt inoculation at four infection stages. GO and KEGG analysis revealed obvious reprogramming of SA and ABA signaling, starch/sucrose metabolism, and photosynthesis in CMPG1-VOE, compared with those in Yangmai 158. Transcripts of SA synthesis genes SARD1 and UGT, signaling factors TGA and PRs, and SnRKs in ABA signaling were specifically upregulated in CMPG1-VOE rather than Yangmai 158. Transcripts of LHCII in photosynthesis, GLUC and TPP in starch/sucrose metabolism were also induced distinctly in CMPG1-VOE. WGCNA analysis showed crucial regulatory candidates of CMPG1-V, involving serine/threonine-protein kinase in phosphorylation, glucosyltransferase in flavonoid biosynthesis, defense factor WRKYs, and peroxidase in oxidative stress. Our results facilitate the deciphering of the resistant regulatory network of CMPG1-V and the identification of key candidates which might be employed in breeding programs.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Xiue Wang
- Correspondence: ; Tel.: +86-25-8439-5308
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Zhao J, Long T, Wang Y, Tong X, Tang J, Li J, Wang H, Tang L, Li Z, Shu Y, Liu X, Li S, Liu H, Li J, Wu Y, Zhang J. RMS2 Encoding a GDSL Lipase Mediates Lipid Homeostasis in Anthers to Determine Rice Male Fertility. PLANT PHYSIOLOGY 2020; 182:2047-2064. [PMID: 32029522 PMCID: PMC7140947 DOI: 10.1104/pp.19.01487] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 05/04/2023]
Abstract
Plant male gametogenesis is a coordinated effort involving both reproductive tissues and sporophytic tissues, in which lipid metabolism plays an essential role. Although GDSL esterases/lipases have been well known as key enzymes for many plant developmental processes and stress responses, their functions in reproductive development remain unclear. Here, we report the identification of a rice male sterile2 (rms2) mutant in rice (Oryza sativa), which is completely male sterile due to the defects in tapetum degradation, cuticle formation in sporophytic tissues, and impaired exine and central vacuole development in pollen grains. RMS2 was map-based cloned as an endoplasmic reticulum-localized GDSL lipase gene, which is predominantly transcribed during early anther development. In rms2, a three-nucleotide deletion and one base substitution (TTGT to A) occurred within the GDSL domain, which reduced the lipid hydrolase activity of the resulting protein and led to significant changes in the content of 16 lipid components and numerous other metabolites, as revealed by a comparative metabolic analysis. Furthermore, RMS2 is directly targeted by the male fertility regulators Undeveloped Tapetum1 and Persistent Tapetal Cell1 both in vitro and in vivo, suggesting that RMS2 may serve as a key node in the rice male fertility regulatory network. These findings shed light on the function of GDSLs in reproductive development and provide a promising gene resource for hybrid rice breeding.
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Affiliation(s)
- Juan Zhao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Tuan Long
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Yifeng Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xiaohong Tong
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Jie Tang
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Jinglin Li
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Huimei Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Liqun Tang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Zhiyong Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Yazhou Shu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Xixi Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Shufan Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
| | - Hao Liu
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Jialin Li
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Yongzhong Wu
- Hainan Bolian Rice Gene Technology Co., Ltd., Haikou 570203, China
| | - Jian Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
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