Virulence effectors encoded in the rice yellow dwarf phytoplasma genome participate in pathogenesis
文献类型： 外文期刊
作者： Zhang, Shuai 1 ; Gan, Peng 1 ; Xie, Huiting 1 ; Li, Chuan 1 ; Tang, Tianxin 1 ; Hu, Qiong 1 ; Zhu, Zhihong 1 ; Zhang, Zhongkai 3 ; Zhang, Jisen 4 ; Zhu, Yongsheng 5 ; Hu, Qun 1 ; Hu, Jie 1 ; Guan, Hongxin 6 ; Zhao, Shanshan 1 ; Wu, Jianguo 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Plant Protect, Vector Borne Virus Res Ctr, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Fuzhou 350002, Peoples R China
2.Guangxi Acad Agr Sci, Plant Protect Res Inst, Nanning 530007, Peoples R China
3.Yunnan Acad Agr Sci, Inst Biotechnol & Germplasm Resources, Kunming 650205, Peoples R China
4.Guangxi Univ, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangxi Key Lab Sugarcane Biol, Nanning 530004, Peoples R China
5.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou 350003, Peoples R China
6.Fujian Normal Univ, Fujian Prov Univ, Coll Life Sci, Key Lab Microbial Pathogenesis & Intervent, Fuzhou 350117, Peoples R China
期刊名称：PLANT PHYSIOLOGY （ 影响因子：6.9； 五年影响因子：7.7 ）
ISSN： 0032-0889
年卷期： 2024 年 197 卷 1 期
页码：
收录情况： SCI
摘要： Bacteria-like phytoplasmas alternate between plant and insect hosts, secreting proteins that disrupt host development. In this study, we sequenced the complete genome of "Candidatus Phytoplasma oryzae" strain HN2022, associated with rice yellow dwarf (RYD) disease, using PacBio HiFi technology. The strain was classified within the 16Sr XI-B subgroup. Through SignalP v5.0 for prediction and subsequent expression analysis of secreted proteins in Nicotiana benthamiana and rice (Oryza sativa L.), we identified the key virulence effector proteins RY348 and RY378. RY348, a homolog of Secreted Aster Yellows Phytoplasma Effector 54 (SAP54), targets and degrades the MADS-box transcription factors MADS1 and MADS15, causing pollen sterility. Meanwhile, RY378 impacts the strigolactone and auxin signaling pathways, substantially increasing tillering. These findings offer insights into the interactions between plants and phytoplasmas. The RYD phytoplasma genome encodes virulence effectors that cause pollen sterility by disrupting transcription factor genes and enhance tillering by modifying phytohormone pathways.
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