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

doi:10.13560/j.cnki.biotech.bull.1985.2016.03.004

摘要/Abstract

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。

关键词: GBSS基因, 直链淀粉, 表达分析, 调控机制

Abstract: 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 GBSSI mainly controls the amylose synthesis in the storage organs such as seeds, embryos, and endosperms etc, while the expression of gene GBSSII mainly 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.

Key words: GBSS gene, amylose, expression analysis, regulatory mechanism

苗红霞,孙佩光,张凯星,金志强,徐碧玉. 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[J]. 生物技术通报, 2016, 32(3): 18-23.

MIAO Hong-xia, SUN Pei-guang, ZHANG Kai-xing, JIN Zhi-qiang, XU Bi-yu. Research Progress on Expression Regulation Mechanism of Genes Encoding Granule-bound Starch Synthase in Plants[J]. Biotechnology Bulletin, 2016, 32(3): 18-23.

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