文献类型：期刊文献

英文题名：Over-Expression of Larch DAL1 Accelerates Life-Cycle Progression in Arabidopsis

作者：Ye, Zha-Long[1] Zang, Qiao-Lu[1] Cheng, Dong-Xia[1] Li, Xiang-Yi[1] Qi, Li-Wang[1] Li, Wan-Feng[1]

第一作者：Ye, Zha-Long

通信作者：Li, WF[1]

机构：[1]Chinese Acad Forestry, Natl Forestry & Grassland Adm, State Key Lab Tree Genet & Breeding, Res Inst Forestry,Key Lab Tree Breeding & Cultiva, Beijing 100091, Peoples R China

年份：2022

卷号：13

期号：6

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000817338700001)】；

基金：This work was supported by the National Natural Science Foundation of China (31770714).

语种：英文

外文关键词：AGL6; gymnosperm; life-cycle; lifetime; MADS-box; reproductive development

摘要：Homologs of Larix kaempferi DEFICIENS-AGAMOUS-LIKE 1 (LaDAL1) promote flowering in Arabidopsis. However, their functional role in the whole life-cycle is limited. Here, we analyzed the phenotypes and transcriptomes of Arabidopsis plants over-expressing LaDAL1. With respect to the defined life-cycle stage of Arabidopsis based on the meristem state, the results showed that LaDAL1 promoted seed germination, bolting, flower initiation, and global proliferative arrest, indicating that LaDAL1 accelerates the meristem reactivation, the transitions of vegetative meristem to inflorescence and flower meristem, and meristem arrest. As a marker gene of meristem, TERMINAL FLOWER 1 was down-regulated after LaDAL1 over-expression. These results reveal that LaDAL1 accelerates the life-cycle progression in Arabidopsis by promoting the transition of meristem fate, providing more and novel functional information about the conifer age-related gene DAL1.