A Wheat R2R3-type MYB Transcription Factor TaODORANT1 Positively Regulates Drought and Salt Stress Responses in Transgenic Tobacco Plants.

ABSTRACT: MYB transcription factors play important roles in plant responses to biotic and abiotic stress. In this study, TaODORANT1, a R2R3-MYB gene, was cloned from wheat (Triticum aestivum L.). TaODORANT1 was localized in the nucleus and functioned as a transcriptional activator. TaODORANT1 was up-regulated in wheat under PEG6000, NaCl, ABA, and H₂O₂ treatments. TaODORANT1-overexpressing transgenic tobacco plants exhibited higher relative water content and lower water loss rate under drought stress, as well as lower Na⁺ accumulation in leaves under salt stress. The transgenic plants showed higher CAT activity but lower ion leakage, H₂O₂ and malondialdehyde contents under drought and salt stresses. Besides, the trans

SUBMITTER: Wei Q 

PROVIDER: S-EPMC5550715 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature