植物SWEET基因家族结构、功能及调控研究进展  

Research Advances in the Structure,Function and Regulation of SWEET Gene Family in Plants

作　　者：胡丽萍[1,2] 张峰[1] 徐惠[1] 刘光敏[1] 王亚钦[1] 何洪巨[1,2] HU Li-ping ZHANG Feng XU Hui LIU Guang-min WANG Ya-qin HE Hong-ju(Beijing Vegetable Research Center, Beijing Academy of Agrieulture and Forestry Sciences, Beijing 100097 Key Laboratory of Biology and Genetic Improvement of Horticultural Crops （ North China ）, Ministry of Agriculture, Beijing 100097)

机构地区：[1]北京市农林科学院蔬菜研究中心,北京100097 [2]农业部华北地区园艺作物生物学与种质创制重点实验室,北京100097

出　　处：《生物技术通报》2017年第4期27-37,共11页Biotechnology Bulletin

基　　金：国家自然科学基金项目(31301792);北京市自然科学基金(6142010);北京市农林科学院青年科研基金(QNJJ201401)

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。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.

关 键 词：糖转运蛋白 SWEET 功能 调控 研究进展 

分 类 号：Q943.2[生物学—植物学]