Phosphorylation-guarded light-harvesting complex II contributes to broad-spectrum blast resistance in rice.
Proc Natl Acad Sci U S A
; 116(35): 17572-17577, 2019 08 27.
Article
em En
| MEDLINE
| ID: mdl-31405986
ABSTRACT
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 broad-spectrum 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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Base de dados:
MEDLINE
Assunto principal:
Fotossíntese
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Doenças das Plantas
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Oryza
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Complexo de Proteína do Fotossistema II
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Resistência à Doença
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article