水稻胚乳淀粉合成相关酶的结构、功能及其互作研究进展

Progress in Structures,Functions and Interactions of Starch Synthesis Related Enzymes in Rice Endosperm

淀粉作为稻米最主要的储藏物质,其生物合成过程直接影响水稻的产量和品质。水稻淀粉的生物合成在造粉体中通过一系列酶促反应完成。本文综述了淀粉合成过程中ADP-葡萄糖焦磷酸化酶(AGPase)、淀粉合酶(SSs)、淀粉分支酶(BE)及淀粉脱支酶(DBE)的结构、功能以及各酶之间的相互作用的最新研究进展,以期为稻米品质改良提供理论参考依据。

Starch is the predominant rice seed reserves. Rice yield and eating quality are influenced by the process of starch biosynthesis. In endosperm amyloplast, starch biosynthesis is a result of complex network of many enzymes. This report summarized the structures, functions and interactions of ADP-glucose pyrophosphorylase （AGPase）, starch synthases （SSs）, starch branching enzymes （BEs） and starch debranching enzymes （DBEs）. It will provide helpful information to breed high yield and good quality rice.