LBD基因家族研究进展

The Research Progress of LBD Gene Family

LBD(lateral organ boundaries domain)基因家族因包含保守的LOB(lateral organ boundaries)结构域区段而得名,是一类植物所特有的转录因子。近期研究表明,该家族基因最早起源于早期陆生藻类植物,在进化过程中产生分化,从而具有多种生物学功能。早期关于LBD基因家族的生物学功能验证多集中于植物的侧生器官,近年研究发现,该家族基因还与植物再生、次生生长、环境胁迫信号响应等植物细胞生长调节过程密切相关。随着研究的深入,一个依赖于LBD基因家族参与调控的分子代谢调控网络逐渐清晰。该文主要对LBD基因家族的结构、分类、进化、生物学功能及参与的分子代谢调控网络进行综述性介绍,并对近年来关于该基因家族的最新研究进展进行系统阐述,为深入理解LBD基因家族在植物生长和发育过程中的重要作用提供帮助。

LBD(lateral organ boundaries domain)gene family,defined by a conserved LOB(lateral organ boundaries)domain segment,is a family of plant-specific transcription factors.Recent studies have shown that LBD family members originated from early terrestrial algae plants,which differentiated during evolution.Thus,LBD family members have various biological functions.Previous studies on the biological function of LBD gene family only focused on plant lateral organs.But recent studies have found that LBD family members are also closely related to plant cell growth and regulation processes such as plant regeneration,plant secondary growth,and environmental stress signal response.With further of research,a molecular metabolic regulation network that relies on the regulation of the LBD gene family is gradually becoming clearer.This paper reviews the structure,classification,evolution,biological functions and molecular metabolic regulation networks involved in the LBD gene family,and summarizes the recent research progress on this gene family in order to better understand the important role of LBD gene family in the growth and development of plants.