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Science China Life Sciences

, Volume 56, Issue 12, pp 1097–1106

First Online: 05 December 2013Received: 02 August 2013Accepted: 30 September 2013DOI: 10.1007-s11427-013-4576-z

Cite this article as: Peng, H., Jiang, G., Zhang, J. et al. Sci. China Life Sci. 2013 56: 1097. doi:10.1007-s11427-013-4576-z

Abstract

Conventional rice breeding has long focused on exploiting the DNA sequence diversity. However, epigenetic diversity, reflected particularly in DNA methylation, can also contribute to phenotypic variation and should not be overlooked in rice breeding. In this study, 20 parental lines of indica rice, which are widely used in hybrid rice breeding in China, were analyzed to investigate variations of DNA methylation and its inheritance. The results revealed a wide diversity in DNA methylation among these breeding lines. A positive correlation was seen between DNA methylation and genetic diversity. Furthermore, some of the methylated DNA was inherited in the subsequent generation, regardless of whether they were produced by selfing or hybrid-crossing. This study provides insight into the methylation patterns in rice, and suggests the importance of epigenetic diversity in rice breeding.

Keywordsepigenetic diversity genetic diversity rice breeding line Contributed equally to this work

This article is published with open access at Springerlink.com

Electronic Supplementary MaterialSupplementary material is available for this article at 10.1007-s11427-013-4576-z and is accessible for authorized users.

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Autor: Hai Peng - GuangHuai Jiang - Jing Zhang - Weixiong Zhang - WenXue Zhai

Fuente: https://link.springer.com/







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