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论文题目: Overexpression of GhPFN2 enhances protection against Verticillium dahliae invasion in cotton
作者: Wang Wenyan, Sun Yongduo, Han Libo, Su Lei, Xia Guixian*, and Wang Haiyun*.
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刊物名称: Sci China Life Sci
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年份: 2017
影响因子: 2.014
论文下载: https://link.springer.com/article/10.1007%2Fs11427-017-9067-2
摘要: Growing evidence indicates that actin cytoskeleton is involved in plant innate immune responses, but the functional mechanism remains largely unknown. Here, we investigated the behavior of a cotton profilin gene (GhPFN2) in response to Verticillium dahliae invasion, and evaluated its contribution to plant defense against this soil-borne fungal pathogen. GhPFN2 expression was up-regulated when cotton root was inoculated with V. dahliae, and the actin architecture was reorganized in the infected root cells, with a clear increase in the density of filamentous actin and the extent of actin bundling. Compared to the wild type, GhPFN2-overexpressing cotton plants showed enhanced protection against V. dahliae infection and the actin cytoskeleton organization in root epidermal cells was clearly altered, which phenocopied that of the wild-type (WT) root cells challenged with V. dahliae. These results provide a solid line of evidence showing that actin cytoskeleton reorganization involving GhPFN2 is important for defense against V. dahliae infection.