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Position: Home > Articles > The TaFIM1 gene mediates wheat resistance against Puccinia striiformis f. sp. tritici and responds to abiotic stress Journal of Integrative Agriculture 2021,20 (7)

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

作者：

Bei-bei, Shi;Wang, Juan;Gao, Hai-feng;Zhang, Xiao-juan;Wang, Yang;Ma, Qing

单位：

Xinjiang Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crop Northwest, Minist Agr & Rural Affairs, Urumqi 830091, Peoples R China;Shanxi Datong Univ, Sch Life Sci, Datong 037009, Peoples R China;Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China

关键词：

wheat;Puccinia striiformis f;sp;tritici;fimbrin;disease resistance;abiotic stress

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 TaFIM1 gene was up-regulated under abiotic stresses. These findings suggest that TaFIM1 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.

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

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