<i>Heading Date 3a</i> Stimulates Tiller Bud Outgrowth in <i>Oryza sativa</i> L. through Strigolactone Signaling Pathway.

ABSTRACT: Heading date 3a (Hd3a, a FLOWERING LOCUS T (FT) ortholog from rice) is well known for its important role in rice (Oryza sativa L.), controlling floral transition under short-day (SD) conditions. Although the effect of Hd3a on promoting branching has been found, the underlying mechanism remains largely unknown. In this report, we overexpressed an Hd3a and BirAG (encoding a biotin ligase) fusion gene in rice, and found that early flowering and tiller bud outgrowth was promoted in BHd3aOE transgenic plants. On the contrary, knockout of Hd3a delayed flowering and tiller bud outgrowth. By using the BioID method, we identified multiple Hd3a proximal proteins. Among them, D14, D53, TPR1, TPR2, and TPRs are central components of the st

SUBMITTER: Zheng Q 

PROVIDER: S-EPMC11476357 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature