<i>CmARF3</i>-<i>CmTCP7</i> module regulates flowering time in chrysanthemum (<i>Chrysanthemum morifolium</i>).

ABSTRACT: The precise timing of flowering in response to environment plays a crucial role in the reproductive processes of plants. The FLOWERING LOCUS T (FT)-FD module is a well-established key node in the photoperiod-mediated pathway. However, the identity of novel partners involved in this network and its regulatory mechanisms remain elusive in most nonmodel species. Here, we found that TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR7 (CmTCP7) functions as a floral repressor in Chrysanthemum morifolium. Its upstream transcriptional regulator AUXIN RESPONSE FACTOR3 (CmARF3) promotes flowering by directly repressing CmTCP7 expression. The expression levels of both genes are short-day inducible. Interestingly, FLOWERING LOCUS T-like3 (CmF

SUBMITTER: Tian C 

PROVIDER: S-EPMC12099206 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature