胁迫条件下植物DNA甲基化的稳定性

doi:10.3864/j.issn.0578-1752.2011.12.003

Scientia Agricultura Sinica ›› 2011, Vol. 44 ›› Issue (12): 2431-2438 .doi: 10.3864/j.issn.0578-1752.2011.12.003

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES·MOLECULAR GENETICS • Previous Articles Next Articles

Stability of Stress-Induced DNA Methylation in Plant

PENG Ha; XI Ting; ZHANG Jing; WU Xian-jun

江汉大学生命科学学院种质资源与遗传育种实验室

Received:2010-10-21 Revised:2010-12-20 Online:2011-06-15 Published:2011-06-15

Abstract

Abstract:

DNA methylation is an important mechanism for plant stress response. It regulates traits such as flowering, yielding and resistance, which are closely related to the stability of species or variety. Most of these related DNA methylation alterations are uniform within population, somewhat heritable between generations and therefore, only slightly at random. Under the biotic stresses, the methylation levels are decreased at the resistance gene loci while increased on genome-wide level. This is consistent with the mechanisms of genetics and evolution, and therefore, should not be at random. Such a phenomenon can be directly or indirectly proved in biotic stresses of tobacco and Arabidopsis, or in abiotic stresses such as cold, salt, heavy metal and polyploidization. The causes of random variation in methylation analysis and the control measures were also discussed.

PENG Ha; XI Ting; ZHANG Jing; WU Xian-jun

Stability of Stress-Induced DNA Methylation in Plant

[J].Scientia Agricultura Sinica, 2011, 44(12): 2431-2438 .