The TaFIM1 gene mediates wheat resistance against Puccinia striiformis f. sp. tritici and responds to abiotic stress  

作　　者：SHI Bei-bei WANG Juan GAO Hai-feng ZHANG Xiao-juan WANG Yang MA Qing 

机构地区：[1]State Key Laboratory of Crop Stress Biology for Arid Areas,Northwest A&F University,Yangling 712100,P.R.China [2]School of Life Science,Shanxi Datong University,Datong 037009,P.R.China [3]Institute of Plant Protection,Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis,Ministry of Agriculture and Rural Affairs,Urumqi 830091,P.R.China

出　　处：《Journal of Integrative Agriculture》2021年第7期1849-1857,共9页农业科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (31571960);the NSFC-Xinjiang Joint Fund, China (U1903110);the 111 Project from the Ministry of Education of China (B07049)。

摘　　要：Fimbrin, a regulator of actin cytoskeletal dynamics that participates in numerous physiological and biochemical processes, controls multiple developmental processes in a variety of tissues and cell types. However, the role of fimbrin in pathogen defense of wheat and the mechanisms have not been well studied. Here, we investigated that the expression of TaFIM1 gene of wheat was significantly induced in response to avirulent race of Puccinia striiformis f. sp. tritici(Pst) and silencing of TaFIM1 by virus-induced gene silencing method. The results show that silencing of TaFIM1 resulted in a reduction of resistance against the stripe rust indicated by both phenotypes and a histological examination of Pst growth. Additionally, the expression level of Ta FIM1 gene was up-regulated under abiotic stresses. These findings suggest that Ta FIM1 functions as a positive regulator of pathogen resistance of wheat plants and response to abiotic stress. Our work may show new light on understanding the roles of fimbrin in wheat.

关 键 词：WHEAT Puccinia striiformis f.sp.tritici FIMBRIN disease resistance abiotic stress 

分 类 号：S512.1[农业科学—作物学]