@article{fdi:010068666,
  title = {{B}acterial community structure and functional arr{A} gene diversity associated with arsenic reduction and release in an industrially contaminated soil},
  author = {{Q}u{\'e}m{\'e}neur, {M}arianne and {G}arrido, {F}. and {B}illard, {P}. and {B}reeze, {D}. and {L}eyval, {C}. and {J}auzein, {M}. and {J}oulian, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study aimed at evaluating potential arsenic ({A}s) mobility in an industrially contaminated soil (64mg/kg of {A}s) of the {M}euse {R}iver basin, and at identifying key bacterial groups that drive soil {A}s dynamics. {B}oth speciation and release of {A}s from this soil was followed under anaerobic conditions using a laboratory batch experiment. {I}n the presence of exogenous carbon sources, {A}s-{V} initially present in the soil matrix and/or adsorbed on synthetic hydrous ferric oxides were solubilized and mainly reduced to {A}s-{III} by indigenous soil microflora. {A}fter a 1-month incubation period in these biotic conditions, {A}s-{III} accounted for 80-85% of the total dissolved {A}s and more than 60% of the solid-phase {A}s. {B}acterial community structure (i.e., 16{S} r{DNA}-based capillary electrophoresis single-strand conformation polymorphism profiles) changed with incubation time and {A}s amendment. {T}he detection of distantly related arsenate respiratory reductase genes (arr{A}), as functional markers of {A}s-{V} respirers, indicates that novel dissimilatory {A}s-{V}-reducing bacteria may be involved in {A}s biotransformation and mobility in anoxic soils. {S}ince {A}s and iron were concomitantly released, a crucial role of indirect {A}s-mobilizing bacteria on {A}s behavior was also revealed. {O}ur results show that the majority of {A}s within the soil matrix was bioavailable and bioaccessible for heterotrophic {A}s-{V} reduction to {A}s-{III}, which may increase {A}s toxicity and mobility in the contaminated soils.},
  keywords = {arr{A} genes ; arsenic ; biotransformation ; {CE}-{SSCP} ; contaminated soil ; microbial diversity ; {FRANCE} ; {MEUSE} {BASSIN}},
  booktitle = {},
  journal = {{G}eomicrobiology {J}ournal},
  volume = {33},
  numero = {10},
  pages = {839--849},
  ISSN = {0149-0451},
  year = {2016},
  DOI = {10.1080/01490451.2015.1118167},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068666},
}