SnRK1 signaling regulates cucumber growth and resistance to Corynespora cassiicola

Huang, Jingnan; Zhao, Jing; Wang, Xue; Ma, Lifeng; Ma, Zhangtong; Meng, Xiangnan; Fan, Haiyan

doi:10.1016/j.plantsci.2023.111716

Cited by 6 publications

(1 citation statement)

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“…SnRK1, a key protein kinase complex composed of multiple subunits, has functions in diverse plant physiological processes. Besides being known as a conserved energy sensor, SnRK1 also contributes to plant resistance against various pathogens [ 27 , 43 ]. However, the mechanism of plant SnRK1′s engagement in the regulation of different physiological processes in response to exogenous stresses is still unknown.…”

Section: Discussionmentioning

confidence: 99%

Identification of Ossnrk1a−1 Regulated Genes Associated with Rice Immunity and Seed Set

Cao,

Lu,

Chen

et al. 2024

Plants

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Sucrose non-fermenting–1-related protein kinase–1 (SnRK1) is a highly conserved serine–threonine kinase complex regulating plants’ energy metabolisms and resistance to various types of stresses. However, the downstream genes regulated by SnRK1 in these plant physiological processes still need to be explored. In this study, we found that the knockout of OsSnRK1a resulted in no obvious defects in rice growth but notably decreased the seed setting rate. The ossnrk1a mutants were more sensitive to blast fungus (Magnaporthe oryzae) infection and showed compromised immune responses. Transcriptome analyses revealed that SnRK1a was an important intermediate in the energy metabolism and response to biotic stress. Further investigation confirmed that the transcription levels of OsNADH-GOGAT2, which positively controls rice yield, and the defense-related gene pathogenesis-related protein 1b (OsPR1b) were remarkably decreased in the ossnrk1a mutant. Moreover, we found that OsSnRK1a directly interacted with the regulatory subunits OsSnRK1β1 and OsSnRK1β3, which responded specifically to blast fungus infection and starvation stresses, respectively. Taken together, our findings provide an insight into the mechanism of OsSnRK1a, which forms a complex with specific β subunits, contributing to rice seed set and resistance by regulating the transcription of related genes.

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Section: Discussionmentioning

confidence: 99%