A Simple Auxin Transcriptional Response System Regulates Multiple Morphogenetic Processes in the Liverwort Marchantia polymorpha.

ABSTRACT: In land plants comparative genomics has revealed that members of basal lineages share a common set of transcription factors with the derived flowering plants, despite sharing few homologous structures. The plant hormone auxin has been implicated in many facets of development in both basal and derived lineages of land plants. We functionally characterized the auxin transcriptional response machinery in the liverwort Marchantia polymorpha, a member of the basal lineage of extant land plants. All components known from flowering plant systems are present in M. polymorpha, but they exist as single orthologs: a single MpTOPLESS (TPL) corepressor, a single MpTRANSPORT inhibitor response 1 auxin receptor, single orthologs of each class of auxin response factor (ARF; MpARF1, MpARF2, MpARF3), and a

SUBMITTER: Flores-Sandoval E 

PROVIDER: S-EPMC4447368 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature