Variation in whole DNA methylation in red maple (Acer rubrum) populations from a mining region: association with metal contamination and ... View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2017-02-15

AUTHORS

K. N. Kalubi, M. Mehes-Smith, G. Spiers, A. Omri

ABSTRACT

Although a number of publications have provided convincing evidence that abiotic stresses such as drought and high salinity are involved in DNA methylation reports on the effects of metal contamination, pH, and cation exchange on DNA modifications are limited. The main objective of the present study is to determine the relationship between metal contamination and Cation exchange capacity (CEC) on whole DNA modifications. Metal analysis confirms that nickel and copper are the main contaminants in sampled sites within the Greater Sudbury Region (Ontario, Canada) and liming has increased soil pH significantly even after 30 years following dolomitic limestone applications. The estimated CEC values varied significantly among sites, ranging between 1.8 and 10.5 cmol(+) kg−1, with a strong relationship being observed between CEC and pH (r = 0.96**). Cation exchange capacity, significantly lower in highly metal contaminated sites compared to both reference and less contaminated sites, was higher in the higher organic matter limed compared to unlimed sites. There was a significant variation in the level of cytosine methylation among the metal-contaminated sites. Significant and strong negative correlations between [5mdC]/[dG] and bioavailable nickel (r = −0.71**) or copper (r = −0.72**) contents were observed. The analysis of genomic DNA for adenine methylation in this study showed a very low level of [6N-mdA]/dT] in Acer rubrum plants analyzed ranging from 0 to 0.08%. Significant and very strong positive correlation was observed between [6N-mdA]/dT] and soil bioavailable nickel (r = 0.78**) and copper (r = 0.88**) content. This suggests that the increased bioavailable metal levels associated with contamination by nickel and copper particulates are associated with cytosine and adenine methylation. More... »

PAGES

405-414

References to SciGraph publications

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  • 2007-12-29. Metal Content in Soil and Black Spruce (Picea mariana) Trees in the Sudbury Region (Ontario, Canada): Low Concentration of Arsenic, Cadmium, and Nickel Detected near Smelter Sources in BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • 2010-05-19. Genetic Analysis of Black Spruce (Picea mariana) Populations from Dry and Wet Areas of a Metal-Contaminated Region in Ontario (Canada) in WATER, AIR, & SOIL POLLUTION
  • 2013-06-22. Long-Term Effects of Liming on Soil Chemistry in Stable and Eroded Upland Areas in a Mining Region in WATER, AIR, & SOIL POLLUTION
  • 2015-01-06. Molecular analysis of red maple (Acer rubrum) populations from a reclaimed mining region in Northern Ontario (Canada): soil metal accumulation and translocation in plants in ECOTOXICOLOGY
  • 2013-08-25. Optimization of global DNA methylation measurement by LC-MS/MS and its application in lung cancer patients in ANALYTICAL AND BIOANALYTICAL CHEMISTRY
  • 2011-04-09. Response of Soybean Seed Germination to Cadmium and Acid Rain in BIOLOGICAL TRACE ELEMENT RESEARCH
  • 2000-04. Heavy Metal Accumulation in Soil and Jack Pine (Pinus banksiana) Needles in Sudbury, Ontario, Canada in BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • 1990-06. Effect of low pH of the root medium on proton release, growth, and nutrient uptake of field beans (Vicia faba) in PLANT AND SOIL
  • 2010-02-09. Establishing, maintaining and modifying DNA methylation patterns in plants and animals in NATURE REVIEWS GENETICS
  • 2010-08-11. Assessment of Heavy Metal Bioavailability in Contaminated Soils from a Former Mining Area (La Union, Spain) Using a Rhizospheric Test in WATER, AIR, & SOIL POLLUTION
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s10646-017-1773-8

    DOI

    http://dx.doi.org/10.1007/s10646-017-1773-8

    DIMENSIONS

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    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/28204976


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