OsTCP19 influences developmental and abiotic stress signaling by modulating ABI4-mediated pathways.

ABSTRACT: Class-I TCP transcription factors are plant-specific developmental regulators. In this study, the role of one such rice gene, OsTCP19, in water-deficit and salt stress response was explored. Besides a general upregulation by abiotic stresses, this transcript was more abundant in tolerant than sensitive rice genotypes during early hours of stress. Stress, tissue and genotype-dependent retention of a small in-frame intron in this transcript was also observed. Overexpression of OsTCP19 in Arabidopsis caused upregulation of IAA3, ABI3 and ABI4 and downregulation of LOX2, and led to developmental abnormalities like fewer lateral root formation. Moreover, decrease in water loss and reactive oxygen species, and hyperaccumulation of lipid droplets in the transgenics contributed to better stress to

SUBMITTER: Mukhopadhyay P 

PROVIDER: S-EPMC4415230 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature