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Structure and diversity of native bacterial communities in soils contaminated with polychlorinated biphenyls.
Zenteno-Rojas, Adalberto; Martínez-Romero, Esperanza; Castañeda-Valbuena, Daniel; Rincón-Molina, Clara Ivette; Ruíz-Valdiviezo, Víctor Manuel; Meza-Gordillo, Rocío; Villalobos-Maldonado, Juan José; Vences-Guzmán, Miguel Ángel; Rincón-Rosales, Reiner.
Afiliação
  • Zenteno-Rojas A; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Martínez-Romero E; Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av, Universidad s/n, Col. Chamilpa, 62210, Cuernavaca, Morelos, Mexico.
  • Castañeda-Valbuena D; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Rincón-Molina CI; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Ruíz-Valdiviezo VM; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Meza-Gordillo R; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Villalobos-Maldonado JJ; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico.
  • Vences-Guzmán MÁ; Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av, Universidad s/n, Col. Chamilpa, 62210, Cuernavaca, Morelos, Mexico.
  • Rincón-Rosales R; Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km, 1080, CP 29050, Tuxtla Gutiérrez, Chiapas, Mexico. reriro61@hotmail.com.
AMB Express ; 10(1): 124, 2020 Jul 10.
Article em En | MEDLINE | ID: mdl-32651884
Persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) are a group of high-risk synthetic substances for human and environmental health. Currently, the study of sites contaminated by the spillage of equipment PCBs containing have been considered targeted areas for the study of bacterial communities with potential for PCBs degradation. There in isolation of bacterial strains is vital for use in biodegradable processes, such as bacterial bioaugmentation, which accelerates the development of phenomena such as natural attenuation of contaminated sites. The objective of this study was to assess biodiversity of bacteria contained in anthropogenic contaminated soils (HS and HP) with PCBs compared to a control sample without contaminant and the modified forest (F) and agricultural (A) soil in the laboratory with 100 mg L-1 PCB. For the analysis of 16S rRNA genes amplified from DNA extracted from the soils evaluated, the latest generation of Illumina Miseq and Sanger sequencing for the cultivable strains were detected. The bacteria identified as the most abundant bacterial phyla for HS and HP soil was Proteobacteria (56.7%) and Firmicutes (22.9%), which decreased in F and A soils. The most abundant bacterial genera were Burkholderia, Bacillus, Acinetobacter, Comamonas and Cupriavidus. Several species identified in this study, such as Bacillus cereus, Burkholderia cepacia, Comamonas testosteroni and Acinetobacter pittii have been reported as PCBs degraders. Finally, by means of a principal component analysis (PCA), a correlation between the physical and chemical characteristics of the soils in relation to the relative abundances of the bacteria identified was obtained. The C/N ratio was directly related to the control soil (without contaminant), while SOM maintained a relationship with F and A soils and the bacterial abundances were directly related to Hs and Hp soils due to the presence of aroclor 1260. Bacteria with the ability to tolerate high concentrations of this pollutant are considered for future use in biostimulation and bioaugmentation processes in contaminated soils.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: AMB Express Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: AMB Express Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Alemanha