Direct Control of SPEECHLESS by PIF4 in the High-Temperature Response of Stomatal Development.

ABSTRACT: Environmental factors shape the phenotypes of multicellular organisms. The production of stomata-the epidermal pores required for gas exchange in plants-is highly plastic and provides a powerful platform to address environmental influence on cell differentiation [1-3]. Rising temperatures are already impacting plant growth, a trend expected to worsen in the near future [4]. High temperature inhibits stomatal production, but the underlying mechanism is not known [5]. Here, we show that elevated temperature suppresses the expression of SPEECHLESS (SPCH), the basic-helix-loop-helix (bHLH) transcription factor that serves as the master regulator of stomatal lineage initiation [6, 7]. Our genetic and expression analyses indicate that the suppression of SPCH and stomatal production is mediated b

SUBMITTER: Lau OS 

PROVIDER: S-EPMC5931714 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature