植物颗粒结合淀粉合成酶(GBSS)基因的表达调控机制研究进展  

Research Progress on Expression Regulation Mechanism of Genes Encoding Granule-bound Starch Synthase in Plants

作　　者：苗红霞[1] 孙佩光[2] 张凯星[3] 金志强[1,2] 徐碧玉[1] 

机构地区：[1]中国热带农业科学院热带生物技术研究所农业部热带作物生物技术重点开放实验室,海口571101 [2]中国热带农业科学院海口实验站海南省香蕉遗传育种改良重点实验室,海口570102 [3]海南大学农学院,海口570228

出　　处：《生物技术通报》2016年第3期18-23,共6页Biotechnology Bulletin

基　　金：国家自然科学基金项目(31401843);海南省自然科学基金项目(314116;314100);现代农业产业技术体系建设专项资金资助项目(CARS-32)

摘　　要：颗粒结合淀粉合成酶(granule-bound starch synthase,GBSS)是决定直链淀粉合成的关键酶,单子叶植物GBSS包含两种同工酶,分别是GBSSI和GBSSII,双子叶植物只有GBSSII一种同工酶。GBSSI基因的表达主要控制种子、胚、胚乳等贮藏器官中直链淀粉的合成,而GBSSII主要控制根、茎、叶等营养器官中直链淀粉的合成。综述了模式植物及农作物中GBSS基因表达调控机制的最新研究进展,以期为其他植物GBSS基因的研究提供借鉴。Granule-bound starch synthase（GBSS）is a key enzyme to determine the amylose synthesis of plants. In monocots,GBSS includes two isoenzymes,designated as GBSSI and GBSSII. Dicot plants contain only one of GBSSII isoenzyme. The expression of gene GBSSImainly controls the amylose synthesis in the storage organs such as seeds,embryos,and endosperms etc,while the expression of gene GBSSIImainly controls the amylose synthesis in the vegetative organs such as roots,stems,and leaves etc. In this paper,the latest research progress on expression regulation mechanism of GBSS genes in model plants and crops was reviewed. These results are expected to provide a reference for the study of GBSS genes from other plants.

关 键 词：GBSS基因 直链淀粉 表达分析 调控机制 

分 类 号：Q943.2[生物学—植物学]