TY - JOUR
T1 - DNA methylation polymorphism and stability in Chinese indica hybrid rice
AU - Peng, Hai
AU - Jiang, Guang Huai
AU - Zhang, Jing
AU - Zhang, Weixiong
AU - Zhai, Wen Xue
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (31071379), the Post-Doctoral Foundation of China (20090450616), and a grant from “Yellow Crane” Special Talent Program of Wuhan.
PY - 2013/12
Y1 - 2013/12
N2 - 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.
AB - 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.
KW - epigenetic diversity
KW - genetic diversity
KW - rice breeding line
UR - https://www.scopus.com/pages/publications/84889688465
U2 - 10.1007/s11427-013-4576-z
DO - 10.1007/s11427-013-4576-z
M3 - Article
C2 - 24302290
AN - SCOPUS:84889688465
SN - 1674-7305
VL - 56
SP - 1097
EP - 1106
JO - Science China Life Sciences
JF - Science China Life Sciences
IS - 12
ER -