A transcriptional complex of NGATHA and bHLH transcription factors directs stigma development in Arabidopsis.

ABSTRACT: The stigma is an angiosperm-specific tissue that is essential for pollination. In the last two decades, several transcription factors with key roles in stigma development in Arabidopsis thaliana have been identified. However, genetic analyses have thus far been unable to unravel the precise regulatory interactions among these transcription factors or the molecular basis for their selective roles in different spatial and temporal domains. Here, we show that the NGATHA (NGA) and HECATE (HEC) transcription factors, which are involved in different developmental processes but are both essential for stigma development, require each other to perform this function. This relationship is likely mediated by their physical interaction in the apical gynoecium. NGA/HEC transcription factors subsequently

SUBMITTER: Ballester P 

PROVIDER: S-EPMC8643694 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature