Rice stripe mosaic virus hijacks rice heading‐related gene to promote the overwintering of its insect vector  

作　　者：Siping Chen Xinyi Zhong Zhiyi Wang Biao Chen Xiuqin Huang Sipei Xu Xin Yang Guohui Zhou Tong Zhang 

机构地区：[1]Guangdong Province Key Laboratory of Microbial Signals and Disease Control,College of Plant Protection,South China Agricultural University,Guangzhou 510642,China [2]State Key Laboratory of Green Pesticide,South China Agricultural University,Guangzhou 510642,China

出　　处：《Journal of Integrative Plant Biology》2024年第9期2000-2016,共17页植物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(32222071,32072388);the National Key Research and Development Program of China(2022YFA1304400);the Natural Science Foundation of Guangdong Province(2021A1515110363,2022A1515010770,2023A1515012030);the Guangzhou Science and Technology Program(2023B03J1313).

摘　　要：Rice stripe mosaic virus(RSMV)is an emerging pathogen which significantly reduces rice yields in the southern region of China.It is transmitted by the leafhopper Recilia dorsalis,which overwinters in rice fields.Our field investigations revealed that RSMV infection causes delayed rice heading,resulting in a large number of green diseased plants remaining in winter rice fields.This creates a favorable environment for leafhoppers and viruses to overwinter,potentially contributing to the rapid spread and epidemic of the disease.Next,we explored the mechanism by which RSMV manipulates the developmental processes of the rice plant.A rice heading‐related E3 ubiquitin ligase,Heading date Associated Factor 1(HAF1),was found to be hijacked by the RSMV‐encoded P6.The impairment of HAF1 function affects the ubiquitination and degradation of downstream proteins,HEADING DATE 1 and EARLY FLOWERING3,leading to a delay in rice heading.Our results provide new insights into the development regulation‐based molecular interactions between virus and plant,and highlights the importance of understanding virus‐vector‐plant tripartite interactions for effective disease management strategies.

关 键 词：HAF1 HEADING LEAFHOPPERS OVERWINTERING RSMV 

分 类 号：S435.11[农业科学—农业昆虫与害虫防治]