TCP14 and TCP15 affect internode length and leaf shape in Arabidopsis.

ABSTRACT: TCP transcription factors constitute a small family of plant-specific bHLH-containing, DNA-binding proteins that have been implicated in the control of cell proliferation in plants. Despite the significant role that is likely to be played by genes that control cell division in the elaboration of plant architecture, functional analysis of this family by forward and reverse genetics has been hampered by genetic redundancy. Here we show that mutants in two related class I TCP genes display a range of growth-related phenotypes, consistent with their dynamic expression patterns; these phenotypes are enhanced in the double mutant. Together, the two genes influence plant stature by promoting cell division in young internodes. Reporter gene analysis and use of SRDX fusions suggested that TCP14 and

SUBMITTER: Kieffer M 

PROVIDER: S-EPMC3229714 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature