Genome-Wide Discriminatory Information Patterns of Cytosine DNA Methylation
Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE 68588, USA
Authors to whom correspondence should be addressed.
Academic Editors: Humberto González-Díaz, Roberto Todeschini, Alejandro Pazos Sierra and Sonia Arrasate Gil
Received: 25 February 2016 / Revised: 16 May 2016 / Accepted: 2 June 2016 / Published: 17 June 2016
Cytosine DNA methylation (CDM) is a highly abundant, heritable but reversible chemical modification to the genome. Herein, a machine learning approach was applied to analyze the accumulation of epigenetic marks in methylomes of 152 ecotypes and 85 silencing mutants of Arabidopsis thaliana
. In an information-thermodynamics framework, two measurements were used: (1) the amount of information gained/lost with the CDM changes
and (2) the uncertainty of not observing a SNP
. We hypothesize that epigenetic marks are chromosomal footprints accounting for different ontogenetic and phylogenetic histories of individual populations. A machine learning approach is proposed to verify this hypothesis. Results support the hypothesis by the existence of discriminatory information (DI) patterns of CDM able to discriminate between individuals and between individual subpopulations. The statistical analyses revealed a strong association between the topologies of the structured population of Arabidopsis
ecotypes based on
and on LCR
, respectively. A statistical-physical relationship between
was also found. Results to date imply that the genome-wide distribution of CDM changes is not only part of the biological signal created by the methylation regulatory machinery, but ensures the stability of the DNA molecule, preserving the integrity of the genetic message under continuous stress from thermal fluctuations in the cell environment.
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MDPI and ACS Style
Sanchez, R.; Mackenzie, S.A. Genome-Wide Discriminatory Information Patterns of Cytosine DNA Methylation. Int. J. Mol. Sci. 2016, 17, 938.
Sanchez R, Mackenzie SA. Genome-Wide Discriminatory Information Patterns of Cytosine DNA Methylation. International Journal of Molecular Sciences. 2016; 17(6):938.
Sanchez, Robersy; Mackenzie, Sally A. 2016. "Genome-Wide Discriminatory Information Patterns of Cytosine DNA Methylation." Int. J. Mol. Sci. 17, no. 6: 938.
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