植物学报

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水稻胚乳淀粉合成相关蛋白的翻译后修饰研究进展

李新宇1, 谷月1, 徐非非1, 包劲松1, 2*   

  1. 1浙江大学, 农业与生物技术学院原子核农业科学研究所, 杭州 310058; 2浙江大学海南研究院, 三亚, 572025
  • 收稿日期:2024-05-05 修回日期:2024-10-12 出版日期:2024-10-21 发布日期:2024-10-21
  • 通讯作者: 包劲松
  • 基金资助:

    国家自然科学基金(No.32201817, No.31871531)和海南省自然科学基金(No.323MS066)

Research progress on post-translational modifications of starch biosynthesis-related proteins in rice endosperm

Xinyu Li1, Yue Gu1, Feifei Xu1, Jinsong Bao1, 2*   

  1. 1Institute of Nuclear Agricultural Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; 2Hainan Institute, Zhejiang University, Sanya 572025, China
  • Received:2024-05-05 Revised:2024-10-12 Online:2024-10-21 Published:2024-10-21
  • Contact: Jinsong Bao

摘要: 蛋白质翻译后修饰(PTMs)是一种重要的蛋白质生物学功能调控机制, 在水稻种子发育和胚乳淀粉生物合成过程中起重要作用。随着蛋白质修饰组学的发展, 近年来在水稻胚乳中鉴定到大量淀粉合成相关酶(SSREs)均会发生蛋白质PTMs。本文总结了水稻胚乳SSREs的磷酸化、赖氨酸乙酰化、琥珀酰化、2-羟基异丁酰化、丙二酰化及泛素化等六种PTMs的蛋白质组分析结果、修饰位点、修饰途径及生物学功能。其中, 蛋白磷酸化修饰的相关研究最多, 在调节植物生长发育、淀粉合成代谢过程中起到关键作用。水稻胚乳SSREs的PTMs可能会影响籽粒灌浆、稻米淀粉品质及外观品质。深入了解蛋白质PTMs对水稻胚乳SSREs表达调控具有重要意义, 为培育高产优质水稻品种提供参考。

关键词: 水稻, 淀粉生物合成, 蛋白质翻译后修饰, 蛋白质组分析

Abstract: Protein post-translational modification is an important regulatory mechanism of protein biological function, which plays an important role in rice seed development and endosperm starch biosynthesis. With the development of proteomics technologies, in recent years, a large number of starch synthesis-related proteins in rice endosperm have been identified to undergo post-translational modification. This review summarizes the proteomic analysis results, modification sites, modification pathways and biological functions of six post-translational modifications of endosperm starch synthesis-related proteins in rice, including phosphorylation, lysine acetylation, succinylation, 2-hydroxyisobutyrylation, malonylation and ubiquitination. Among them, protein phosphorylation modification is the most studied, which plays a key role in regulating plant growth and development, and starch metabolism. Post-translational modification of starch synthesis-related proteins in rice endosperm may affect grain filling, rice starch quality and appearance quality. An in-depth understanding of protein post-translational modification is of great significance for the regulation of protein expression related to rice endosperm starch synthesis, and provides a reference for the breeding of high-yield and high-quality rice varieties.

Key words: rice, starch biosynthesis, protein post-translational modification, proteomics analysis