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Depth-resolved abundance and diversity of arsenite-oxidizing bacteria in the groundwater of Beimen, a blackfoot disease endemic area of southwestern Taiwan

Das, Suvendu ; Kar, Sandeep ; Jean, Jiin-Shuh ; Rathod, Jagat ; Chakraborty, Sukalyan ; Liu, Hsiao-Sheng ; Bundschuh, Jochen

Water Research, 01 December 2013, Vol.47(19), pp.6983-6991 [Periódico revisado por pares]

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  • Título:
    Depth-resolved abundance and diversity of arsenite-oxidizing bacteria in the groundwater of Beimen, a blackfoot disease endemic area of southwestern Taiwan
  • Autor: Das, Suvendu ; Kar, Sandeep ; Jean, Jiin-Shuh ; Rathod, Jagat ; Chakraborty, Sukalyan ; Liu, Hsiao-Sheng ; Bundschuh, Jochen
  • Assuntos: Groundwater Arsenic ; Arsenite Oxidizing Bacteria ; Pcr-Dgge ; Mpn-Pcr ; Groundwater Arsenic ; Arsenite Oxidizing Bacteria ; Pcr-Dgge ; Mpn-Pcr ; Engineering
  • É parte de: Water Research, 01 December 2013, Vol.47(19), pp.6983-6991
  • Descrição: The role of arsenite oxidizers in natural attenuation of arsenic pollution necessitates studies on their abundance and diversity in arsenic-contaminated aquifers. In this study, most probable number-polymerase chain reaction (MPN-PCR) and denaturing gradient gel electrophoresis (DGGE) was applied to monitor depth-wise abundance and diversity of aerobic arsenite oxidizers in arsenic-enriched groundwater of Beimen, southwestern Taiwan. The results revealed that the abundance of arsenite oxidizers ranged from 0.04 to 0.22, and the lowest ratio was observed in the most arsenic-enriched and comparatively more reduced groundwater (depth 200 m) of Beimen 1. The highest ratio was observed in the less arsenic-enriched and less reduced groundwater (depth 60 m) of Beimen 2B. DGGE profiles showed a shift in diversity of arsenite oxidizers, consisting of members of the Betaproteobacteria (61%), Alphaproteobacteria (28%) and Gammaproteobacteria (11%), depending on mainly arsenic concentration...
  • Idioma: Inglês

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