MPK3- and MPK6-mediated VLN3 phosphorylation regulates actin dynamics during stomatal immunity in Arabidopsis.
MPK3- and MPK6-mediated VLN3 phosphorylation regulates actin dynamics during stomatal immunity in Arabidopsis.
复制标题
MPK3 和 MPK6 介导的 VLN3 磷酸化调节拟南芥气孔免疫过程中的肌动蛋白动态
DOI:
10.1038/s41467-021-26827-2
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发表时间:
2021-11-09
影响因子:
16.6
通讯作者:
Li J
中科院分区:
文献类型:
--
作者:
Zou M;Guo M;Zhou Z;Wang B;Pan Q;Li J;Zhou JM;Li J
Upon perception of pathogens, plants can rapidly close their stomata to restrict pathogen entry into internal tissue, leading to stomatal immunity as one aspect of innate immune responses. The actin cytoskeleton is required for plant defense against microbial invaders. However, the precise functions of host actin during plant immunity remain largely unknown. Here, we report that Arabidopsis villin3 (VLN3) is critical for plant resistance to bacteria by regulating stomatal immunity. Our in vitro and in vivo phosphorylation assays show that VLN3 is a physiological substrate of two pathogen-responsive mitogen-activated protein kinases, MPK3/6. Quantitative analyses of actin dynamics and genetic studies reveal that VLN3 phosphorylation by MPK3/6 modulates actin remodeling to activate stomatal defense in Arabidopsis.
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