biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 44:203-206, 2001 | DOI: 10.1023/A:1010287006431

Cytosine Methylation Changes in Rice Centromeric and Telomeric Sequences Induced by Foreign DNA Introgression

B. Liu1, Z.L. Liu1, Y.Z. Dong1, J.H. Zhao2, B.Q. Hunag2, M.Y. He2
1 Institute of Genetics and Cytology, Northeast Normal University, Changchun, People's Republic of China
2 Tonghua Academy of Agriculture, Hailong, People's Republic of China

Cytosine methylation changes (hyper- or hypomethylation) in centromeric and telomeric sequences were observed in all three studied rice introgression lines containing DNA from wild rice, Zizania latifolia Griseb. The changed genomic Southern hybridization patterns were complex and non-concordant between a pair of isoschizomers (HpaII/MspI) digests, indicating methylation modifications at both the inner and outer cytosines of the CCGG sites. The changed patterns were inherited through generations. Possible mechanism for the methylation changes and their potential implications for the phenotypic variation and genome organization are discussed.

Keywords: chromosome structure; epigenetic changes; introgression lines; Oryza sativa L.
Subjects: chromosomal morphology, structure; introgression lines, rice; Oryza sativa; rice; Zizania latifolia

Published: June 1, 2001  Show citation

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Liu, B., Liu, Z.L., Dong, Y.Z., Zhao, J.H., Hunag, B.Q., & He, M.Y. (2001). Cytosine Methylation Changes in Rice Centromeric and Telomeric Sequences Induced by Foreign DNA Introgression. Biologia plantarum, 44(2), 203-206. doi: 10.1023/A:1010287006431
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