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Indexed by:期刊论文

Date of Publication:2019-01-08

Journal:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS

Included Journals:SCIE、PubMed、Scopus

Volume:508

Issue:2

Page Number:597-602

ISSN No.:0006-291X

Key Words:mir1916; Drought stress; Tomato; Tobacco

Abstract:MicroRNAs (miRNAs) play important roles in regulating plant responses to various environmental stresses. In our study, overexpression of miR1916 in tomato (OE-1) reduced its tolerance to drought. The miR1916-silenced transgenic plants (ST-1 and Anti-7) significantly increased resistance to drought stress. The transgenic tobacco plants also have a similar result in displaying the tolerance of drought. Physiological analysis revealed that miR1916 affected the osmoregulation and reactive oxygen species (ROS) accumulation. In addition, transcript levels of the miR1916 target genes, histone deacetylases (HDAC) and strictosidine synthase (STR), decreased in miR1916-overexpressing transgenic tobacco plants. Our results suggested that miR1916 is a passive regulator in the plant resistance to drought stress and has potentially impacting on abiotic stress responses in Solanaceae. (C) 2018 Elsevier Inc. All rights reserved.