Isolation and characterization of GI and FKF1 homologous genes in the subtropical fruit tree Dimocarpus longan

摘要: Longan (Dimocarpus longan Lour.) is a subtropical fruit tree of significant economic importance. Flowering key event in and other trees. In this study, GIGANTEA (GI) FLAVIN-BINDING, KELCH REPEAT, F-BOX1 (FKF1) homologs were cloned from named DlGI DlFKF1, respectively. Translated sequences DlFKF1 revealed high homology to GI FKF1 plants. transcript levels varied seasonally the shoots leaves during floral bud differentiation longan. Expression shoot tips increased reached peak November which time physiological buds Ectopic overexpression Arabidopsis resulted early-flowering phenotypes adventitious root formation under LD conditions. The expression YUCCA 9 PIN-FORMED 2 found be elevated DlGI-overexpressing DlFKF1-overexpressing plants These results suggest that both are flowering promoters they might involved regulation buds, inducing initiation by affecting endogenous auxin synthesis transport Our will provide more insight into woody