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- Title
Global characterization of OsPIP aquaporins reveals that the H<sub>2</sub>O<sub>2</sub> transporter OsPIP2;6 increases resistance to rice blast.
- Authors
Gousi Li; Jingluan Han; Chen Yi; Hao Luo; Yuzhu Wang; Fengpin Wang; Xiaoyu Wang; Letian Chen; Yaling Zhang
- Abstract
Plasma membrane intrinsic proteins (PIPs) are conserved plant aquaporins that transport small molecules across the plasma membrane to trigger instant stress responses and maintain cellular homeostasis under biotic and abiotic stress. To elucidate their roles in plant immunity to pathogen attack, we characterized the expression patterns, subcellular localizations, and H2O2-transport ability of 11 OsPIPs in rice (Oryza sativa), and identified OsPIP2;6 as necessary for rice disease resistance. OsPIP2;6 resides on the plasma membrane and facilitates cytoplasmic import of the immune signaling molecule H2O2. Knockout of OsPIP2;6 increases rice susceptibility to Magnaporthe oryzae, indicating a positive function in plant immunity. OsPIP2;6 interacts with OsPIP2;2, which has been reported to increase rice resistance to pathogens via H2O2 transport. Our findings suggest that OsPIP2;6 cooperates with OsPIP2;2 as a defense signal transporter complex during plant–pathogen interaction.
- Subjects
RICE genetics; AQUAPORINS; CELL membranes; ABIOTIC stress; PLANT-pathogen relationships; GENE knockout
- Publication
Crop Journal (2095-5421), 2024, Vol 12, Issue 1, p102
- ISSN
2095-5421
- Publication type
Article
- DOI
10.1016/j.cj.2023.11.004