MicroRNA402 Affects Seed Germination of Arabidopsis thaliana Under Stress Conditions via Targeting DEMETER-LIKE Protein3 mRNA

被引：88
作者：
Kim, Joo Yeol
Kwak, Kyung Jin
Jung, Hyun Ju
Lee, Hwa Jung
Kang, Hunseung [1 ]
机构：
[1] Chonnam Natl Univ, Dept Plant Biotechnol, Agr Plant Stress Res Ctr, Coll Agr & Life Sci, Kwangju 500757, South Korea
来源：
PLANT AND CELL PHYSIOLOGY | 2010年 / 51卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
Abiotic stress; Arabidopsis; DEMETER-LIKE protein; Demethylation; MicroRNA; REGULATED MICRORNAS; DNA DEMETHYLATION; EXPRESSION; GENES;
D O I：
10.1093/pcp/pcq072
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The functional roles of miR402 in Arabidopsis thaliana were investigated under abiotic stress conditions. Overexpression of miR402 accelerated the seed germination and seedling growth of Arabidopsis under salt stress conditions, while its overexpression promoted only seed germination but not seedling growth of Arabidopsis under dehydration or cold stress conditions. The expression of DEMETER-LIKE protein3 mRNA was down-regulated in miR402-overexpressing transgenic plants. These results imply that miR402 plays a role as a positive regulator of seed germination and seedling growth of Arabidopsis under stress conditions, and that microRNA-guided regulation of DNA demethylation is an adaptive process of plants to stress conditions.
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收藏
页码：1079 / 1083
页数：5
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