Abstract:
:Five arsenic-resistant bacterial strains (designated MP1400, MP1400a, MP1400d, APSLA3, and BPSLA3) were isolated from soils collected at the Alps region (Italy), which showed no contamination by arsenic. Phylogenetic analysis of the 16S rRNA gene sequences assigned them to the genera Pseudomonas and Bacillus. Bacillus sp. strain 1400d and Pseudomonas spp. strains APSLA3 and MP1400 showed higher tolerance to As(III), as indicated by minimum inhibitory concentrations of 10 mmol/L. Pseudomonas sp. strain MP1400 exhibited higher tolerance to As(V) (minimum inhibitory concentration of 135 mmol/L). The isolated arsenic-resistant strains were able to reduce As(V) to As(III), especially Pseudomonas sp. strain MP1400 reducing 2 mmol/L of As(V) to As(III) within 24 h. The results suggest that the isolated bacterial strains play a role in the arsenic biogeochemical cycle of arsenic-poor soils in the Alps mount area.
journal_name
Folia Microbiol (Praha)journal_title
Folia microbiologicaauthors
Pepi M,Protano G,Ruta M,Nicolardi V,Bernardini E,Focardi SE,Gaggi Cdoi
10.1007/s12223-011-0010-8subject
Has Abstractpub_date
2011-01-01 00:00:00pages
29-35issue
1eissn
0015-5632issn
1874-9356journal_volume
56pub_type
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