Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 116, Issue 35, Pages 17572-17577Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1905123116
Keywords
light-harvesting complex II; phosphorylation; Magnaporthe oryzae; broad-spectrum resistance
Categories
Funding
- Key program of Natural Science Foundation of China (NSFC) [31530063]
- Innovation Team Program for NSFC [31721004]
- Innovation Team Program for Jiangsu Universities (2017)
- Jiangsu Agricultural Science and Technology Innovation Fund [CX[18]1003]
- Swiss Programme for Research on Global Issues for Development [IZ07Z0-160877]
- Swiss National Science Foundation (SNF) [IZ07Z0_160877] Funding Source: Swiss National Science Foundation (SNF)
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Environmental conditions are key factors in the progression of plant disease epidemics. Light affects the outbreak of plant diseases, but the underlying molecular mechanisms are not well understood. Here, we report that the light-harvesting complex II protein, LHCB5, from rice is subject to light-induced phosphorylation during infection by the rice blast fungus Magnaporthe oryzae. We demonstrate that single-nucleotide polymorphisms (SNPs) in the LHCB5 promoter control the expression of LHCB5, which in turn correlates with the phosphorylation of LHCB5. LHCB5 phosphorylation enhances broadspectrum resistance of rice to M. oryzae through the accumulation of reactive oxidative species (ROS) in the chloroplast. We also show that LHCB5 phosphorylation-induced resistance is inheritable. Our results uncover an immunity mechanism mediated by phosphorylation of light-harvesting complex II.
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