《植物生理学报》 2014, 50(9): 1367-1373

植物中SWEET基因家族研究进展

刘畅, 姜晶*, 韩晓雪, 韩佳轩

沈阳农业大学园艺学院, 设施园艺省部共建教育部重点实验室, 辽宁省设施园艺重点实验室, 沈阳110866

通信作者：姜晶；E-mail: jiangjingcau@163.com；Tel: 024-88487143

摘　要：

SWEET基因家族是一个新的糖转运蛋白, 具有2个MtN3/saliva跨膜结构域, 从单细胞的原生生物到高等的真核生物中均有出现。目前对该家族功能研究较少, 尽管基于MtN3/saliva的不同类型的基因已经被确定, 但确切的生物学功能与该跨膜结构域的分子功能仍有待研究。近来的研究表明MtN3/saliva/SWEET基因可能作为糖转运蛋白或通过与离子转运蛋白的互作促进离子转运, 调节不同的生理过程, 在包括转运糖类、发育、环境适应性、宿主-病原体的相互作用中发挥作用。本文介绍了MtN3/saliva/SWEET基因结构功能的最新研究进展, 将为阐明其在不同植物中的功能提供分子基础。

关键词：糖转运蛋白; SWEET; 研究进展; 植物

收稿：2014-06-26   修定：2014-07-24

资助：国家自然科学基金(31372054)和植物生理学与生物化学国家重点实验室开放课题(SKLPPBKF1404)。

Research Advances in SWEET Gene Family in Plants

LIU Chang, JIANG Jing*, HAN Xiao-Xue, HAN Jia-Xuan

Key Laboratory of Protected Horticulture, Ministry of Education, Key Laboratory of Protected Horticulture of Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China

Corresponding author: JIANG Jing; E-mail: jiangjingcau@163.com; Tel: 024-88487143

Abstract:

SWEET gene family, harboring two MtN3/saliva transmembrane domains, is a new sugar transporter and is present from protozoa to high eukaryotes. Some types of the family genes are characterized, but little was known regarding the biological and molecular functions of the family and the transmembrane domains. Recently, MtN3/saliva/SWEET genes have been reported to be involved in multiple physiological processes by facilitating ion transport via interaction with ion transporters or as sugar transporters. They play more diverse roles in plants like transport sugar, reproductive development, environmental adaptation and host-pathogen interaction. This article focuses on the advance of the MtN3/saliva/SWEET gene family, including details about their structure, function and regulation. It will help to elucidate the molecular bases of their function in plants.

Key words: sugar transporters; SWEET; research advance; plants