The biochemical activity mechanism of the non-TAL effect sub-XopK of rice white leaf disease.

Yellow monocytobacteria is a class of pathogenic bacteria that can infect rice, wheat, tomatoand, and poly-leaf and twin leaf plants. The white leaf disease caused by rice yellow monocytobacteria in rice
is one of the most important bacterial diseases in rice, which has brought great losses to agricultural production.
pathogenic bacteria are used to help pathogenic microorganisms cause disease by secreting many agents into plant cells through a three-type secretion system, manipulating the conduction of immune signals in plant cells, as well as a variety of other cellular biological processes (such as interfering with plant protein function, manipulating plant hormone changes, etc.). The three types of secretion system effects of rice white leaf dead bacteria in
include two main categories: transcription activator activator-like/TAL and non-non-TAL effectors.
TAL effectors regulate host gene expression by directly identifying and binding target gene promoters through their own repetitive sequences, but there is a lack of understanding of the pathogenesis of non-TAL effectors. Zhang Jie's team at the Institute of Microbiology of the Chinese Academy of Sciences
systematically analyzed the function of 16 non-TAL effectors of rice white leaf dead bacteria, and isolated the effectos XopK, which plays a key role in the pathogenicity of rice jaundice bacteria.
study found that XopK has E3 ubiquitin-linked enzyme activity, through direct ubiquitin modification of rice important immune receptor kinase OsSERK2 and mediateits, inhibiting the plant immune response to promote pathogenicity of germs.
this study reveals the biochemical activity of the non-TAL effector XopK of rice white leaf disease, and clarifies the mechanism of controlling plant immunity and its function in the pathogen-causing process.
published the results online June 27 in the international academic journal New Phytologist.
the study's rice materials and field vaccination trials worked with Chen Xuewei, a professor at Sichuan Agricultural University. Qin Jun, assistant researcher of zhang Jie's research group, and Zhou Xiaogang, Ph.D., Sichuan Agricultural University, were co-authors of the paper, and Zhang Jie and Chen Xuewei were co-authors.

the research was supported by the Chinese Academy of Sciences' Strategic Leading Science and Technology Special (Class B), the National Natural Science Foundation of China and the Chinese Academy of Sciences Youth Innovation Promotion Association.
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