TY - JOUR
T1 - DNA Methylation Changes Induced in Rice by Exposure to High Concentrations of the Nitric Oxide Modulator, Sodium Nitroprusside
AU - Ou, Xiufang
AU - Zhuang, Tingting
AU - Yin, Wenchao
AU - Miao, Yiling
AU - Wang, Bo
AU - Zhang, Yunhong
AU - Lin, Xiuyun
AU - Xu, Chunming
AU - von Wettstein, Diter
AU - Rustgi, Sachin
AU - Liu, Bao
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China (No. 31200198), the State Key Basic Research and Development Plan of China (2013CBA01404), the Ministry of Education of China (No.20120043120012), and the Joint Center for Plant Genetic Research between Northeast Normal University and Washington State University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2015/10/31
Y1 - 2015/10/31
N2 - Nitric oxide (NO) is a signaling molecule that participates at physiological concentrations in diverse regulatory pathways. However, when NO concentration reaches levels higher than normal, it is sensed as a stress, which results in epigenetic alterations and chromatin remodeling in plants. Here, we showed that exposure to 0.5 mM of sodium nitroprusside (SNP), a NO donor, induces stress symptoms in rice seedlings that result in complete growth inhibition. Moreover, these stress symptoms in SNP-treated plants were found to be associated with methylation changes in genomic DNA, which predominantly involve hypomethylation at the CHG sites. Concomitant with these changes, transcriptional activation of a number of genes and transposable elements (TEs) was also observed. Further analysis revealed that expression of four genes, Chromomethylase 3 (OsCMT3), deficient in DNA methylation 1 (OsDDM1a), OsDDM1b, and DEMETER (OsDME), involved in chromatin remodeling and DNA methylation homoeostasis have been specifically perturbed.
AB - Nitric oxide (NO) is a signaling molecule that participates at physiological concentrations in diverse regulatory pathways. However, when NO concentration reaches levels higher than normal, it is sensed as a stress, which results in epigenetic alterations and chromatin remodeling in plants. Here, we showed that exposure to 0.5 mM of sodium nitroprusside (SNP), a NO donor, induces stress symptoms in rice seedlings that result in complete growth inhibition. Moreover, these stress symptoms in SNP-treated plants were found to be associated with methylation changes in genomic DNA, which predominantly involve hypomethylation at the CHG sites. Concomitant with these changes, transcriptional activation of a number of genes and transposable elements (TEs) was also observed. Further analysis revealed that expression of four genes, Chromomethylase 3 (OsCMT3), deficient in DNA methylation 1 (OsDDM1a), OsDDM1b, and DEMETER (OsDME), involved in chromatin remodeling and DNA methylation homoeostasis have been specifically perturbed.
KW - DNA methylation
KW - Gene expression
KW - Nitric oxide
KW - Rice
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U2 - 10.1007/s11105-014-0843-9
DO - 10.1007/s11105-014-0843-9
M3 - Article
AN - SCOPUS:84940538849
VL - 33
SP - 1428
EP - 1440
JO - Plant Molecular Biology Reporter
JF - Plant Molecular Biology Reporter
SN - 0735-9640
IS - 5
ER -