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论文类型： 期刊论文

发表时间： 2019-01-08

发表刊物： BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS

收录刊物： SCIE、PubMed、Scopus

卷号： 508

期号： 2

页面范围： 597-602

ISSN号： 0006-291X

关键字： mir1916; Drought stress; Tomato; Tobacco

摘要： 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.