title: MicroRNA402 affects seed germination of Arabidopsis thaliana under stress conditions via targeting DEMETER-LIKE Protein3 mRNA.
abstract: 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.
authors.affiliation: Department of Plant Biotechnology, Agricultural Plant Stress Research Center and Biotechnology Research Institute, College of Agriculture and Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, 500-757 Korea.
authors.forename: Joo Yeol
authors.initials: JY
authors.lastname: Kim
authors.forename: Kyung Jin
authors.initials: KJ
authors.lastname: Kwak
authors.forename: Hyun Ju
authors.initials: HJ
authors.lastname: Jung
authors.forename: Hwa Jung
authors.initials: HJ
authors.lastname: Lee
authors.forename: Hunseung
authors.initials: H
authors.lastname: Kang
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D003080:Cold Temperature; D045647:DNA Glycosylases / Q000235:genetics / Q000378:metabolism*; D003681:Dehydration; D018506:Gene Expression Regulation, Plant; D018525:Germination / Q000235:genetics*; D035683:MicroRNAs / Q000235:genetics / Q000378:metabolism*; D030821:Plants, Genetically Modified / Q000235:genetics / Q000254:growth & development; D012333:RNA, Messenger / Q000378:metabolism; D018749:RNA, Plant / Q000378:metabolism*; D036226:Seedlings / Q000235:genetics / Q000254:growth & development; D012639:Seeds / Q000235:genetics / Q000254:growth & development*; D012965:Sodium Chloride / Q000494:pharmacology; D013312:Stress, Physiological
chemical_list: D029681:Arabidopsis Proteins; D035683:MicroRNAs; D012333:RNA, Messenger; D018749:RNA, Plant; D012965:Sodium Chloride; C519857:DML3 protein, Arabidopsis; D045647:DNA Glycosylases