P_(SAG12)-ipt基因转化植株研究进展  

A View of Advantage in Transference of Gene PSAG12-ipt into Plant

作　　者：张根良[1] 王文泉[2] 

机构地区：[1]华南热带农业大学农学院,儋州571737 [2]中国热带农业科学院热带生物技术研究所,海口571101

出　　处：《生物技术通报》2008年第2期11-14,共4页Biotechnology Bulletin

摘　　要：叶片衰老是一种程序性死亡过程;ip(t isopentenyl transferas)基因转化植株,可以催化调控内源细胞分裂素合成,延缓转化株叶片衰老。SAG12基因启动子能够控制ipt基因在植株下部衰老叶片中表达。介绍了ipt基因和SAG12基因启动子的来源和应用,以及PSAG12-ipt基因的产生和转化植株在国内的研究概况。Leaf senescence is a type of programmed cell death; The introduction of the ipt gene into the phnt genome results in elevated levels of cytokinin in the transformed tissue and delayed leaf senescence, The SAG12 promoter lets ipt gene activate only at the onset of senescence in the lower mature leaves of plant. The origin and application of ipt gene and SAG12 promoter are reviewed. And progress on PSAG12-ipt transferred into plant is studied.

关 键 词：SAG12 IPT 细胞分裂素 叶片衰老 

分 类 号：Q943.2[生物学—植物学]