Transcription Factor WRKY33 Mediates the Phosphate Deficiency-Induced Remodeling of Root Architecture by Modulating Iron Homeostasis in Arabidopsis Roots.

ABSTRACT: The remodeling of root architecture is regarded as a major development to improve the plant's adaptivity to phosphate (Pi)-deficient conditions. The WRKY transcription factors family has been reported to regulate the Pi-deficiency-induced systemic responses by affecting Pi absorption or transportation. Whether these transcription factors act as a regulator to mediate the Pi-deficiency-induced remodeling of root architecture, a typical local response, is still unclear. Here, we identified an Arabidopsis transcription factor, WRKY33, that acted as a negative regulator to mediate the Pi-deficiency-induced remodeling of root architecture. The disruption of WRKY33 in wrky33-2 mutant increased the plant's low Pi sensitivity by further inhibiting the primary root growth and promoting the formatio

SUBMITTER: Shen N 

PROVIDER: S-EPMC8431420 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature