Identification and characterization of wheat drought-responsive MYB transcription factors involved in the regulation of cuticle biosynthesis.

ABSTRACT: A plant cuticle forms a hydrophobic layer covering plant organs, and plays an important role in plant development and protection from environmental stresses. We examined epicuticular structure, composition, and a MYB-based regulatory network in two Australian wheat cultivars, RAC875 and Kukri, with contrasting cuticle appearance (glaucousness) and drought tolerance. Metabolomics and microscopic analyses of epicuticular waxes revealed that the content of β-diketones was the major compositional and structural difference between RAC875 and Kukri. The content of β-diketones remained the same while those of alkanes and primary alcohols were increased by drought in both cultivars, suggesting that the interplay of all components rather than a single one defines the difference in drought tolerance

SUBMITTER: Bi H 

PROVIDER: S-EPMC5049387 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature