MicroRNA402 affects seed germination of Arabidopsis thaliana under stress conditions via targeting DEMETER-LIKE Protein3 mRNA.
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.
Kim
Joo Yeol
JY
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.
Kwak
Kyung Jin
KJ
Jung
Hyun Ju
HJ
Lee
Hwa Jung
HJ
Kang
Hunseung
H
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
D029681:Arabidopsis Proteins; D035683:MicroRNAs; D012333:RNA, Messenger; D018749:RNA, Plant; D012965:Sodium Chloride; C519857:DML3 protein, Arabidopsis; D045647:DNA Glycosylases