Article
Plant Sciences
Lanping Shi, Xia Li, Yahong Weng, Hanyang Cai, Kaisheng Liu, Baixue Xie, Hussain Ansar, Deyi Guan, Shuilin He, Zhiqin Liu
Summary: The study reveals that plant immunity and dehydration tolerance are coupled and regulated by the CaPti1-CaERF3 module in pepper plants, enhancing resistance against bacterial wilt caused by Ralstonia solanacearum.
Article
Biochemistry & Molecular Biology
Ansar Hussain, Liu Kaisheng, Ali Noman, Muhammad Furqan Ashraf, Mohammed Albaqami, Muhammad Ifnan Khan, Zhiqin Liu, Shuilin He
Summary: In this study, the functional role of CaASHH3 protein in plant immunity was characterized in pepper. It was found that CaASHH3 acts as a positive regulator in cell death and pepper immunity against bacterial pathogens, and its function is regulated by signals mediated by SA, JA, ET, and ABA.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Heshan Du, Jingjing Yang, Bin Chen, Xiaofen Zhang, Xiulan Xu, Changlong Wen, Sansheng Geng
Summary: This study provides insights into the transcriptional changes during pepper-R. solanacearum interactions and aids in the discovery of potential susceptibility and virulence factors.
Article
Biochemistry & Molecular Biology
Peipei Qi, Mengling Huang, Xuehan Hu, Ying Zhang, Ying Wang, Pengyue Li, Shiyun Chen, Dan Zhang, Sen Cao, Wanting Zhu, Jiatao Xie, Jiasen Cheng, Yanping Fu, Daohong Jiang, Xiao Yu, Bo Li
Summary: The type III effector RipAB of Ralstonia solanacearum directly interacts with TGAs in Arabidopsis, interfering with the recruitment of RNA Pol II at TGA-regulons and disrupting immune gene expression.
Article
Plant Sciences
Huishan Qiu, Bingsen Wang, Mengshu Huang, Xiaohu Sun, Liu Yu, Dong Cheng, Wenfeng He, Dan Zhou, Xintong Wu, Botao Song, Ning Tang, Huilan Chen
Summary: Ralstonia solanacearum is a highly destructive plant pathogenic bacteria that can infect over 200 plant species, including potato. In this study, a novel type III secretion system secreted effector called RipBT is identified, which promotes R. solanacearum infection on potato by interfering with the plant's reactive oxygen species metabolism.
MOLECULAR PLANT PATHOLOGY
(2023)
Article
Plant Sciences
Yuyan An, Jialan Chen, Zhangyan Xu, Xue Ouyang, Peng Cao, Rongbo Wang, Peiqing Liu, Meixiang Zhang
Summary: Ralstonia solanacearum is a pathogen that causes devastating diseases in economically important crops. The study shows that RipTPS(G), a type III effector, specifically induces cell death in Nicotiana tabacum, while RipTPS(C) cannot. The expression of RipTPS(G) leads to upregulation of hypersensitive response-related genes in N. tabacum and reduces the virulence of CQPS-1. It is also found that RipTPS contributes to pathogen virulence.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Hayoung Moon, Ankita Pandey, Hayeon Yoon, Sera Choi, Hyelim Jeon, Maxim Prokchorchik, Gayoung Jung, Kamil Witek, Marc Valls, Honour C. McCann, Min-Sung Kim, Jonathan D. G. Jones, Cecile Segonzac, Kee Hoon Sohn
Summary: This study identified a T3E protein RipAZ1 in Ralstonia solanacearum as an avirulence determinant in Solanum americanum, inducing cell death response and leading to acquired virulence when lost. The naturally occurring C-terminal truncation of RipAZ1 results in loss of cell death induction, while the central region of RipAZ1 is sufficient to induce cell death. RipAZ1 may activate defense in host cell cytoplasm, conferring avirulence in S. americanum. This work opens the way for the identification of disease resistance genes specific to RipAZ1 recognition against bacterial wilt disease.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Plant Sciences
Nina L. Denne, Rachel R. Hiles, Oleksandr Kyrysyuk, Anjali S. Iyer-Pascuzzi, Raka M. Mitra
Summary: The study investigated the subcellular localization of 19 T3Es from phytopathogenic bacteria and found that the effectors mainly localize to the plant cell periphery and the nucleus. The data suggest that these bacteria target a wide diversity of cellular organelles and provide a foundation for developing testable hypotheses about effector function.
Review
Microbiology
Joren De Ryck, Petra Van Damme, Sofie Goormachtig
Summary: The type III secretion system (T3SS) is a well-studied pathogenicity determinant used by bacteria to translocate effectors (T3Es) into host cells for immune evasion and niche establishment. This article explores different approaches to functionally characterize T3Es, including host localization studies, virulence screenings, biochemical activity assays, and large-scale omics studies. Using Ralstonia solanacearum species complex (RSSC) as a case study, the advances in these methods and understanding of effector biology are discussed. Complementary data obtained from these methods offer crucial insights into the entire function of effectors and contribute to a better understanding of phytopathogens, presenting opportunities for tackling them.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Plant Sciences
Dylan R. Zeiss, Paul A. Steenkamp, Lizelle A. Piater, Ian A. Dubery
Summary: The study discovered that Ralstonia solanacearum-derived cold shock protein csp22 can elicit an immune response in tomato plants and investigated its effects on the plant's metabolome. The results show that csp22 pre-treatment can enhance tomato's resistance against R. solanacearum infection, contributing to the understanding of plant immune system operation at an integrative level.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Qiaoling Lu, Yu Huang, Hui Wang, Meiyun Wan, Jingang Lv, Xingge Cheng, Yuanhui Chen, Weiwei Cai, Sheng Yang, Lei Shen, Deyi Guan, Shuilin He
Summary: This study functionally characterized the role of CabZIP23 in the CabZIP63-CaWRKY40 cascade and its specific activation of pepper immunity against RSI. CabZIP23 was found to be directly regulated by CaWRKY40 and to positively contribute to pepper immunity against RSI. The interaction between CabZIP23 and CabZIP63 was confirmed, and it promoted the binding of CabZIP63 to immunity-related target genes, enhancing pepper immunity against RSI.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Ecology
Mei Li, Thomas Pommier, Yue Yin, Jianing Wang, Shaohua Gu, Alexandre Jousset, Joost Keuskamp, Honggui Wang, Zhong Wei, Yangchun Xu, Qirong Shen, George A. Kowalchuk
Summary: The rhizosphere microbiome plays a crucial role in defending against soilborne pathogens, and inhibiting the growth of pathogen helpers may be effective in reducing pathogen densities. This approach could potentially become a sustainable strategy for pathogen control.
Article
Biochemistry & Molecular Biology
Margot Raffeiner, Suayib Uestuen, Tiziana Guerra, Daniela Spinti, Maria Fitzner, Sophia Sonnewald, Susanne Baldermann, Frederik Boernke
Summary: Xanthomonas effector protein XopS enhances disease susceptibility by repressing defense gene expression and suppressing stomatal immunity through interaction with and inhibition of WRKY40, a transcriptional regulator. XopS manipulation of WRKY40 stability alters downstream gene expression and phytohormone crosstalk to promote pathogen proliferation.
Article
Immunology
Ansar Hussain, Ali Noman, Muhammad Arif, Shahid Farooq, Muhammad Ifnan Khan, Ping Cheng, Sameer H. Qari, Muhammad Anwar, Mohamed Hashem, Muhammad Furqan Ashraf, Saad Alamri, Muhammad Adnan, Ahlam Khalofah, Omar Mahmoud Al-zoubi, Mohammad Javed Ansari, Khalid Ali Khan, Yunhao Sun
Summary: The study identified CabHLH113 as a key transcription factor in pepper immunity against Ralstonia solanacearm, regulating defense response by inducing the transcription of immunity-associated genes and triggering HR-like cell death. Loss of CabHLH113 function compromised plant defense, leading to increased pathogen growth and susceptibility. Over-expression of CabHLH113 induced strong defense responses, enhancing the expression of defense-associated genes and activating cell death pathways. Collectively, CabHLH113 plays a novel role in pepper immunity by orchestrating defense mechanisms against RSI.
MICROBIAL PATHOGENESIS
(2021)
Article
Biochemistry & Molecular Biology
Ankita Pandey, Hayoung Moon, Sera Choi, Hayeon Yoon, Maxim Prokchorchik, Jay Jayaraman, Rajendran Sujeevan, Yu Mi Kang, Honour C. McCann, Cecile Segonzac, Chul Min Kim, Soon Ju Park, Kee Hoon Sohn
Summary: In this study, the R. solanacearum effector RipJ was identified as playing a pathogenic role in a specific eggplant species and triggering bacterial wilt resistance. Despite belonging to the YopJ family of acetyltransferases, RipJ does not require conserved residues in the acetyltransferase catalytic triad to induce immunity.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2021)
Article
Biochemistry & Molecular Biology
Lei Shen, Sheng Yang, Feng Yang, Deyi Guan, Shuilin He
MOLECULAR PLANT-MICROBE INTERACTIONS
(2020)
Article
Plant Sciences
Sheng Yang, Yuanyuan Shi, Longyun Zou, Jinfeng Huang, Lei Shen, Yuzhu Wang, Deyi Guan, Shuilin He
PLANT AND CELL PHYSIOLOGY
(2020)
Article
Plant Sciences
Jinfeng Huang, Lei Shen, Sheng Yang, Deyi Guan, Shuilin He
JOURNAL OF EXPERIMENTAL BOTANY
(2020)
Article
Plant Sciences
Jinsen Cai, Weiwei Cai, Xueying Huang, Sheng Yang, Jiayu Wen, Xiaoqin Xia, Feng Yang, Yuanyuan Shi, Deyi Guan, Shuilin He
Summary: The study revealed the positive regulatory role of CaWRKY58 in response to LPS stress and the interaction between CaWRKY58 and 14-3-3 protein leading to enhanced expression of PHR1. This interaction did not affect the expression of immunity-related genes in pepper plants.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Sheng Yang, Yangwen Zhang, Weiwei Cai, Cailing Liu, Jiong Hu, Lei Shen, Xueying Huang, Deyi Guan, Shuilin He
Summary: The study identified a member of the WRKY family, CaWRKY28, from pepper that physically interacts with CaWRKY40, and showed that CaWRKY28 acts as a positive regulator in pepper responses to infection by Ralstonia solanacearum. The interaction between CaWRKY28 and CaWRKY40 plays a crucial role in regulating immunity against the pathogenic bacterium.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2021)
Article
Plant Sciences
Yutong Zheng, Shicong He, Weiwei Cai, Lei Shen, Xueying Huang, Sheng Yang, Y. U. Huang, Qiaoling Lu, Hui Wang, Deyi Guan, Shuilin He
Summary: The APETALA2 (AP2) subfamily transcription factor CaAIL1 enhances pepper immunity against Ralstonia solanacearum infection by repressing a subset of negative immune regulators during the immune response.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Plant Sciences
Sheng Yang, Weiwei Cai, Lei Shen, Jianshen Cao, Cailing Liu, Jiong Hu, Deyi Guan, Shuilin He
Summary: This study identified that phosphorylation of CaWRKY27b by CaCDPK29 leads to its translocation into the nucleus, where it interacts with CaWRKY40 to positively regulate immunity- and thermotolerance-related genes during pepper response to RSI and HTHH stress.
Correction
Plant Sciences
Yutong Zheng, Shicong He, Weiwei Cai, Lei Shen, Xueying Huang, Sheng Yang, Yu Huang, Qiaoling Lu, Hui Wang, Deyi Guan, Shuilin He
PLANT AND CELL PHYSIOLOGY
(2022)
Article
Plant Sciences
Sheng Yang, Weiwei Cai, Lei Shen, Ruijie Wu, Jianshen Cao, Weiqi Tang, Qiaoling Lu, Yu Huang, Deyi Guan, Shuilin He
Summary: The study found that pepper plants exhibit different immune responses to Ralstonia solanacearum infection under high temperature and high humidity conditions, with activation of salicylic acid and jasmonic acid mediated immunities, as well as cytokinin-mediated immunity.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Qiaoling Lu, Yu Huang, Hui Wang, Meiyun Wan, Jingang Lv, Xingge Cheng, Yuanhui Chen, Weiwei Cai, Sheng Yang, Lei Shen, Deyi Guan, Shuilin He
Summary: This study functionally characterized the role of CabZIP23 in the CabZIP63-CaWRKY40 cascade and its specific activation of pepper immunity against RSI. CabZIP23 was found to be directly regulated by CaWRKY40 and to positively contribute to pepper immunity against RSI. The interaction between CabZIP23 and CabZIP63 was confirmed, and it promoted the binding of CabZIP63 to immunity-related target genes, enhancing pepper immunity against RSI.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Genetics & Heredity
Weiwei Cai, Sheng Yang, Ruijie Wu, Yutong Zheng, Shicong He, Lei Shen, Deyi Guan, Shuilin Heid
Summary: Pepper responds differently to high temperature stress and Ralstonia solanacearum infection but employs some shared transcription factors. This study reveals that CaSWC4 interacts with CaRUVBL2 and CaTAF14b and positively regulates pepper response to infection and thermotolerance. CaSWC4 activates chromatin of target genes by promoting chromatin modifications and recruits other transcription factors through physical interaction. This process depends on the presence of infection or high temperature stress and helps maintain the balance between immunity and thermotolerance.
Article
Plant Sciences
Yinhui Qiu, Yongqing Li, Lidong Wu, Hang Wei, Jianwei Fu, Weiting Chen, Shuting Lin, Sheng Yang, Rui Zhang, Wei Shang, Chengshu Liao, Shaogui Zeng, Ying Luo, Weiwei Cai
Summary: Transcriptome sequencing and HS-SPME-GC-MS analysis were used to study the differentially expressed genes and volatile organic compounds (VOCs) in spicy and non-spicy pepper fruits. The results showed that fatty acid biosynthesis and terpenoid biosynthesis may be the main metabolic pathways for aroma differences between these two types of fruits. The differential expression of genes related to fatty acid biosynthesis and key terpene synthesis genes may contribute to the different aroma. The findings provide references for the development of high-aroma pepper germplasm resources and breeding of new varieties.
Article
Plant Sciences
Weiwei Cai, Sheng Yang, Ruijie Wu, Jianshen Cao, Lei Shen, Deyi Guan, He Shuilin
Summary: The study reveals a trade-off mechanism in pepper between growth, immunity, and thermotolerance, with the NAC-type transcription factor CaNAC2c playing a crucial role in coordinating and regulating these aspects through its interactions with CaHSP70 and CaNAC029.
Article
Plant Sciences
Zhi-Qin Liu, Lan-Ping Shi, Sheng Yang, Shan-Shan Qiu, Xiao-Ling Ma, Jin-Sen Cai, De-Yi Guan, Zong-Hua Wang, Shui-Lin He
Summary: The study reveals that the DWE element in the promoter of CaWRKY40 is critical for responses to Ralstonia solanacearum inoculation or heat stress, with preferential binding by CaWRKY40 and regulation by CaWRKY58 and CaWRKY27. Additionally, the presence of DWE in orthologous promoters of other WRKY40 genes indicates a conserved response mechanism to pathogen infection or heat stress mediated by WRKY40 binding to DWE.
MOLECULAR PLANT PATHOLOGY
(2021)