Thiourea priming enhances salt tolerance through co-ordinated regulation of microRNAs and hormones in Brassica juncea.

ABSTRACT: Activation of stress tolerance mechanisms demands transcriptional reprogramming. Salt stress, a major threat to plant growth, enhances ROS production and affects transcription through modulation of miRNAs and hormones. The present study delineates salt stress ameliorating action of thiourea (TU, a ROS scavenger) in Brassica juncea and provides mechanistic link between redox, microRNA and hormones. The ameliorative potential of TU towards NaCl stress was related with its ability to decrease ROS accumulation in roots and increase Na⁺ accumulation in shoots. Small RNA sequencing revealed enrichment of down-regulated miRNAs in NaCl + TU treated roots, indicating transcriptional activation. Ranking analysis identified three key genes including BRX4, CBL10 and PHO1, showing inverse re

SUBMITTER: Srivastava AK 

PROVIDER: S-EPMC5382540 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature