Functional Characterization of Floral Gene Network Reveals a Critical FT1-AP1 Interaction in Flowering Regulation in Longan.

ABSTRACT: Longan (Dimocarpus longan Lour.) is a commercially valuable tropical fruit crop that contains two antagonistic FLOWERING LOCUS T (FT) homologs involved in regulating flowering time. However, how these FT genes interact with flowering regulators FLOWERING LOCUS D (FD) and APETALA1 (AP1) remains unknown. Four flowering-related genes in longan, DlFT1, DlFT2, DlAP1 and DlFD, were successfully isolated. Expression profiling revealed that all four genes were expressed in leaves and buds across different stages of natural and KClO₃-induced floral bud differentiation. Functional characterization through heterologous overexpression in Arabidopsis thaliana showed that DlAP1 significantly prom

SUBMITTER: Tang Y 

PROVIDER: S-EPMC12787483 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature