Article
DNaseI-sensitive and undermethylated rDNA is preferentially expressed in a maize hybrid.
Plant molecular biology - 1 Mar 1993
Jupe E R, Zimmer E A
Abstract excerpt
An Eco RI polymorphism, present in the 26S ribosomal RNA gene (rDNA) of the maize hybrid Sx19 (B73 x Mo17), was utilized to correlate DNaseI sensitivity, undermethylation and expression in rDNA. We have previously shown that in double digest experiments with methylation-sensitive restriction enzymes and Eco RI, Sx19 rDNA fragments originating from repeat units with two Eco RI sites (8.0 kb) are undermethylated,...
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