Bacterial Communities from the Arsenic Mine in Złoty Stok, Sudety Mountains, Poland

• Main Authors: Tomasz Cłapa, Dorota Narożna, Rafał Siuda, Andrzej Borkowski, Marek Selwet, Cezary J. Mądrzak, Ewa Koźlecka
• Format: Article
• Language: English
• Published: Exeley Inc. 2017-09-01
• Series: Polish Journal of Microbiology
• Subjects: arsenic mine ecosystem; metagenomic approach; microbial community; supergene minerals
• Online Access: https://www.exeley.com/exeley/journals/polish_journal_of_microbiology/66/3/pdf/10.5604_01.3001.0010.4875.pdf

Investigations of bacterial communities and characterization of mineralogy of the environment in the Złoty Stok As-Au deposit werecarried out. PXRD analysis revealed the presence of picropharmacolite as the most common secondary arsenic mineral in the mine. Total DNA was extracted from slime streams or slime biofilms samples to investigate the bacterial communities. PCR amplification of 16S rDNA was performed followed by subcloning of its products. Over 170 clones were analyzed by means of RFLP method. Eight group of clones representing different restriction patterns were identified. The nucleotide sequences of their inserts suggest that bacteria present in the mine environment belong to: Flavobacteria, Sphingobacteriia, Bacteroides, Proteobacteria, Mollicutes and Firmicutes. The metagenomic approach allows to demonstrate a higher diversity of microbiota than classical microbiological studies of cultivable isolates.