《植物生理学报》 2015, 51(7): 1017-1023

植物滞绿基因STAY-GREEN的研究进展

孙佩光¹, 吴琼¹, 徐碧玉², 常胜合¹, 苗红霞², 金志强^1,2,*

¹中国热带农业科学院海口实验站/国家重要热带农业工程技术研究中心香蕉研发部/海南省香蕉遗传改良重点实验室, 海口570102; ²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学与遗传资源利用重点实验室, 海口571101

通信作者：金志强；E-mail: 18689846976@163.com；Tel: 0898-66794563

摘　要：

滞绿基因STAY-GREEN (SGR)是绿色器官衰老/成熟的关键调控因子, 通过系统进化分析将其分为SGR和SGR-LIKE (SGRL)两大亚家族。在不同物种中SGR和SGRL基因的序列特征、表达模式及功能均存在一定差异, 且同源基因之间的功能也不尽一致。本文概述了近年来国内外SGR/SGRL基因的最新研究进展, 主要包括SGR/SGRL基因的染色体定位、分类和表达模式及可能具有的功能等。

关键词：滞绿基因; 叶绿素降解; 基因表达; 功能

收稿：2015-01-20   修定：2015-07-01

资助：中国热带农业科学院海口实验站科研专项经费(HKZKY140209)、海南省自然科学基金项目(314100)、国家自然科学基金(31401843)、国家星火计划项目(2014GA-800005)。

Progress in Research on STAY-GREEN Genes in Plants

SUN Pei-Guang¹, WU Qiong¹, XU Bi-Yu², CHANG Sheng-He¹, MIAO Hong-Xia², JING Zhi-Qiang^1,2,*

¹Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences/Banana Research and Development Department, National Center of Important Tropical Crops Engineering and Technology Research/Hainan Provincial Key Laboratory for Genetics and Breeding of Banana, Haikou 570102, China; ²Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Haikou 571101, China

Corresponding author: JING Zhi-Qiang; E-mail: 18689846976@163.com; Tel: 0898-66794563

Abstract:

STAY-GREEN (SGR) genes are key regulatory factors involved in senescence and ripening process in plant green organs. Based on phylogenetic analysis, STAY-GREEN genes were divided into two groups, SGR and SGR-LIKE (SGRL) subfamilies. However, there are some differences between SGR and SGRL in sequence features, expression patterns and functional characters among different plant species, while the functions for SGR/SGRL homolog genes are not the same. In this article, we summarize the research progress in SGR/SGRL genes in recent years including the chromosome location, classification and expression, and possible functions of SGR/SGRL genes.

Key words: STAY-GREEN genes; chlorophyll breakdown; gene expression; function