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- W3134734254 endingPage "dev196378" @default.
- W3134734254 startingPage "dev196378" @default.
- W3134734254 abstract "ABSTRACT Starch accumulation is key for the maturity of rice pollen grains; however, the regulatory mechanism underlying this process remains unknown. Here, we have isolated a male-sterile rice mutant, abnormal pollen 1 ( ap1 ), which produces nonviable pollen grains with defective starch accumulation. Functional analysis revealed that AP1 encodes an active L-type lectin receptor-like kinase (L-LecRLK). AP1 is localized to the plasma membrane and its transcript is highly accumulated in pollen during the starch synthesis phase. RNA-seq and phosphoproteomic analysis revealed that the expression/phosphorylation levels of numerous genes/proteins involved in starch and sucrose metabolism pathway were significantly altered in the mutant pollen, including a known rice UDP-glucose pyrophosphorylase (OsUGP2). We further found that AP1 physically interacts with OsUGP2 to elevate its enzymatic activity, likely through targeted phosphorylation. These findings revealed a novel role of L-LecRLK in controlling pollen maturity via modulating sucrose and starch metabolism." @default.
- W3134734254 created "2021-03-15" @default.
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- W3134734254 date "2021-03-03" @default.
- W3134734254 modified "2023-10-16" @default.
- W3134734254 title "An L-type lectin receptor-like kinase promotes starch accumulation during rice pollen maturation" @default.
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