Jiao Baozhen, Meng Qingwei, Lv Wei
State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Daizong Street, Tai'an, 271018, Shandong, People's Republic of China.
Bot Stud. 2020 Sep 23;61(1):25. doi: 10.1186/s40529-020-00302-5.
Chlorophyll (Chl) degradation is one of the most obvious signs of leaf senescence and fruit ripening. Stay-green (SGR) homologs that can remove magnesium from Chl a are the most important components in Chl degradation pathway in green plants. SGR homologs are not only universally involved in Chl breakdown during the senescence of green organs, but also play crucial roles in other organs during plant growth and development, such as fruit mature and nodule development. In this review, we focus on the diverse functions of SGR homologs in plant growth and development. A better understanding of SGR would be helpful for providing a theoretical basis for further illustrating the regulatory mechanism of SGR homologs.
叶绿素（Chl）降解是叶片衰老和果实成熟最明显的标志之一。能够从叶绿素a中去除镁的保持绿色（SGR）同源物是绿色植物叶绿素降解途径中最重要的成分。SGR同源物不仅普遍参与绿色器官衰老过程中的叶绿素分解，而且在植物生长发育过程中的其他器官中也发挥着关键作用，如果实成熟和根瘤发育。在本综述中，我们重点关注SGR同源物在植物生长发育中的多种功能。更好地理解SGR将有助于为进一步阐明SGR同源物的调控机制提供理论基础。
