Journal
GEOMICROBIOLOGY JOURNAL
Volume 26, Issue 1, Pages 1-8Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01490450802599227
Keywords
Mercury; methylation; methylmercury; sulphate-reducing-bacteria; Geobacteraceae; Clostridia
Funding
- Conseil Regional d'Aquitaine
- French Agence Nationale de la Recherche (ANR)
- Conseil General des Pyrenees Atlantiques.
- ANR [MINAMETA (JCJC-2006-044)]
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Mercury methylation has been extensively reported in the literature among Firmicutes and Proteobacteria. Nevertheless, results are hardly comparable because of differences in initial inorganic mercury concentrations used. The use of stable isotopic tracers now permits to study mercury transformations at concentrations close to environmental levels. Here, several strains, including strict fermentative and sulphate-reducing bacteria, were tested for their mercury methylation capacities and the results were compared with data available to date. Under such conditions, mercury methylation only occurs among the delta-Proteobacteria. The absence of relation between taxonomic/phylogenetic affiliation and mercury methylation capacities was pointed out and discussed for environmental studies.
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