A B3 Domain Transcription Factor NtMAB1 Regulates the Release and Outgrowth of Axillary Buds in Tobacco.

ABSTRACT: The release and outgrowth of axillary buds are essential parts of the process of shoot branching in plants, but knowledge of the underlying regulatory mechanisms remains limited. Analysis of mab1-D, a tobacco mutant with a greater number of axillary branches, showed that the mutant phenotype resulted from positive modulation of axillary buds release and outgrowth. TAIL-PCR and co-separation analyses suggested that NtMAB1-S1, a member of the Related to ABI3/VP1 (RAV) subfamily that was highly expressed in the base of axillary buds, was associated with the mutant phenotype. Phenotypic analyses of mab1-D overexpression, knockdown, knockout and complementation lines demonstrated that NtMAB1-S1 was a positive regulator of axillary buds release and outgrowth. NtMAB1-S1 accelerated these processe

SUBMITTER: Xue L 

PROVIDER: S-EPMC12665059 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature