The FT/TFL1 gene family in grapevine
The FT/TFL1 gene family in grapevine
复制标题
DOI：
10.1007/s11103-006-9113-z
复制
发表时间：
2007-03-01
影响因子：
5.1
通讯作者：
Miguel Martinez-Zapater, Jose
中科院分区：
文献类型：
--
作者：
Jose Carmona, Maria;Calonje, Myriam;Miguel Martinez-Zapater, Jose
FT/TFL 1基因家族编码与磷脂酰乙醇胺结合蛋白相似的蛋白质，其功能为开花启动子和抑制子。我们发现葡萄属葡萄FT/TFL 1基因家族至少由5个基因组成。与在其他双子叶植物物种中鉴定的同源基因的序列比较将它们分为三个主要分支，FT、MFT和TFL 1亚科，后者包括三个葡萄属序列。基因表达模式与VvFT和VvMFT作为开花启动子的作用一致;而VvTFL 1A、VvTFL 1B和VvTFL 1C可能与营养体发育和维持分生组织不确定性相关。VvFT在转基因拟南芥植物中的过表达产生类似于FT所产生的早期开花表型，支持该基因在开花促进中的作用。VvTFL 1A的过表达不影响开花时间，但决定花分生组织，强烈改变花序结构，这与其他物种中分配给类似基因的生物学作用一致。
The FT/TFL1 gene family encodes proteins with similarity to phosphatidylethanolamine binding proteins which function as flowering promoters and repressors. We show here that the FT/TFL1 gene family in Vitis vinifera is composed of at least five genes. Sequence comparisons with homologous genes identified in other dicot species group them in three major clades, the FT, MFT and TFL1 subfamilies, the latter including three of the Vitis sequences. Gene expression patterns are in agreement with a role of VvFT and VvMFT as flowering promoters; while VvTFL1A, VvTFL1B and VvTFL1C could be associated with vegetative development and maintenance of meristem indetermination. Overexpression of VvFT in transgenic Arabidopsis plants generates early flowering phenotypes similar to those produced by FT supporting a role for this gene in flowering promotion. Overexpression of VvTFL1A does not affect flowering time but the determination of flower meristems, strongly altering inflorescence structure, which is consistent with the biological roles assigned to similar genes in other species.