An organ‐specific hypomethylation of cotyledon genomic rDNA in Pisum sativum L

FEBS Letters

Boulter, Donald¹  Gatehouse, John A.¹  Waterhouse, Rosemary N.¹ 

[1]Department of Botany, University of Durham, South Road, Durham DH1 3LE, England

关键词: Pisum sativum L.);    DNA methylation;    rRNA gene;    Gene expression;    Development;   

DOI  :  10.1016/0014-5793(86)81115-2

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The CCGG and GCGC sequences in pea genomic rDNA were found to be hypomethylated relative to the leaf in the developing cotyledon. No rRNA gene copies were detected with only unmethylated CCGG sequences and the majority appeared to contain a mixture of doubly methylated (^mC^mCGG) and partially methylated (C^mGG) sites. Some CCGG sequences were shown to have a greater probability of being undermethylated. Seed development did not appear to act as a stimulus for de novo methylation.

【 授权许可】

Unknown