a putative effector uvhrip1 inhibits bax-triggered cell death in nicotiana benthamiana, and infection of ustilaginoidea virens suppresses defense-related genes expression

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ID: 128644
2020
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Abstract
Rice false smut (RFS), caused by Ustilaginoidea virens, is one of the most detrimental rice fungal diseases and pose a severe threat to rice production and quality. Effectors in U. virens often act as a set of essential virulence factors that play crucial roles in the interaction between host and the pathogen. Thus, the functions of each effector in U. virens need to be further explored. Here, we performed multiple alignment analysis and demonstrated a small secreted hypersensitive response-inducing protein (hrip), named UvHrip1, was highly conserved in fungi. The predicted SP of UvHrip1 was functional, which guided SUC secreted from yeast and was recognized by plant cells. The localization of UvHrip1 was mainly in the nucleus and cytoplasm monitored through the GFP fusion protein in Nicotiana benthamiana cells. uvhrip1 was drastically up-regulated in the susceptible cultivar LYP9 of rice during the pathogen infection, while did not in the resistant cultivar IR28. We also proved that UvHrip1 suppressed the mammalian BAX-induced necrosis-like defense symptoms in N. benthamiana. Furthermore, patterns of expression of defense-related genes, OsPR1#012 and OsPR10b, were regulated over U. virens infection in rice. Collectively, our data demonstrated that infection of U. virens suppresses defense-related genes expression and UvHrip1 was most likely a core effector in regulating plant immunity.
Reference Key
wang2020peerja Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Yingling Wang;Jing Li;Shibo Xiang;Jianming Zhou;Xunwen Peng;Yingfan Hai;Yan Wang;Shuai Li;Songhong Wei
Journal pediatrics
Year 2020
DOI
10.7717/peerj.9354
URL
https://peerj.com/articles/9354/
Keywords
innate immunity ustilaginoidea virens effector

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