DNA methylation alterations of upland cotton (Gossypium hirsutum) in response to cold stress

• Autorzy: Fan H.H. , Wei J. , Li T. C. , Li Z. P. , Guo N. , Cai Y. P. , Lin Y.
• Języki publikacji: EN

Abstrakty

EN

DNA methylation plays an important role in regulating gene expression in plants. In the experiment, we studied effects of cold on DNA methylation variation in upland cotton. Using the methylation-sensitive amplified polymorphism procedure, we chose 66 pairs of selective amplification primers to assess the status and levels of cytosine methylation. The hemimethylation of the external cytosine and the full methylation of the internal cytosine were scored. As a result, cold triggered the demethylation of hemimethylated or internally full methylated cytosine. With the prolongation of cold treatment, the demethylation loci increased and the methylation loci decreased. Nevertheless, this change could be reverted when cotton was subsequently recovered under normal temperature. In addition, 29 polymorphic bands that appeared in the electrophoretogram were sequenced. By homologous alignment analysis, most of these 29 fragments were identified as genes or DNA clones involved in abiotic stress response. The variation in methylation loci existed at both coding and non-coding regions. Furthermore, the expression of the abiotic stressrelated genes, GhCLSD (Seq21), GhARK (Seq22), GhARM (Seq15, Seq18, Seq19 and Seq21) and GhTPS (Seq8), were tested. The results revealed that cold treatment induced down-regulation of GhCLSD, GhARK and GhARM, but upregulated the expression of GhTPS. These changes were in accordance with the alteration of DNA methylation. Thus, cold may affect the gene expression via changing the methylation status in the cytosine nucleotide.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 08
• Opis fizyczny: p.2445-2453,fig.,ref.

Twórcy

autor

Fan H.H.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Wei J.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Li T. C.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Li Z. P.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Guo N.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Cai Y. P.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

autor

Lin Y.

• Department of Life Sciences, Anhui Agricultural University, Hefei 230036, People’s Republic of China

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