植物SWEET基因家族结构、功能及调控研究进展

doi:10.13560/j.cnki.biotech.bull.1985.2017.04.004

摘要/Abstract

摘要： SWEET（sugars will eventually be exported transporter）基因家族是一类新型的糖转运蛋白,可顺浓度梯度对糖分进行双向跨膜运输。SWEET在植物光合同化物韧皮部装载、蜜腺花蜜分泌、种子灌浆、花粉发育、病原菌互作、逆境调控等过程中起着关键作用,近年来受到广泛关注。尽管SWEET广泛存在于植物中,但目前对其功能研究主要集中在水稻和拟南芥上。介绍了SWEET基因家族的发现、蛋白结构特征、生理功能及逆境调控的最新研究进展,有助于将来对SWEET基因家族进行更深入和全面的研究。

关键词: 糖转运蛋白, SWEET, 功能, 调控, 研究进展

Abstract: SWEETs（sugars will eventually be exported transporters）are a novel class of recently identified sugar transporters. SWEETs appear to function as a bidirectional uniporter/facilitator,facilitating diffusion of sugars across cell membranes along a concentration gradient. SWEETs play central roles in a number of biochemical processes,such as phloem loading for long-distance sugar transport,nectar secretion,seed filling,pollen nutrition,plant-pathogen interaction and stress regulation,so they had attracted much attention in recent years. SWEETs are widely found in plants. However,only a few species,such as Arabidopsis and rice,of the SWEETs have been functionally identified. This article focuses on the advances of the SWEET gene family,including details about their discovering,characteristics of protein structure,physiological functions and regulation in plants. It will help to elucidate the molecular bases of their function in plants more in-depth and comprehensive in the future.

Key words: sugar transporter, SWEET, function, regulation, research advance

胡丽萍, 张峰, 徐惠, 刘光敏, 王亚钦, 何洪巨. 植物SWEET基因家族结构、功能及调控研究进展[J]. 生物技术通报, 2017, 33(4): 27-37.

HU Li-ping, ZHANG Feng, XU Hui, LIU Guang-min, WANG Ya-qin, HE Hong-ju. Research Advances in the Structure,Function and Regulation of SWEET Gene Family in Plants[J]. Biotechnology Bulletin, 2017, 33(4): 27-37.

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