作者: Anne Fahy , Ludovic Giloteaux , Philippe Bertin , Denis Le Paslier , Claudine Médigue
DOI: 10.1007/S00248-014-0558-3
关键词: Thiomonas 、 Genetics 、 Actinobacteria 、 Candidatus 、 Acidobacteria 、 16S ribosomal RNA 、 Arsenite 、 Acidithiobacillus 、 Biology 、 Bacteria
摘要: To gain an in-depth insight into the diversity and distribution of genes under particular evolutionary pressure arsenic-rich acid mine drainage (AMD), involved in bacterial arsenic detoxification (arsB, ACR3) arsenite oxidation (aioA) were investigated sediment from Carnoules (France), parallel to global metabolically active bacteria. The bacteria affiliated mainly AMD specialists, i.e., organisms detected or isolated AMDs throughout world. They included Acidobacteria non-affiliated “Candidatus Fodinabacter communificans,” as well Thiomonas Acidithiobacillus spp., Actinobacteria, unclassified Gammaproteobacteria. range these suggested that they show niche conservatism. Sixteen types deduced protein sequences transporters (5 ArsB 11 Acr3p) detected, whereas a single type oxidase (AioA) was found. Our data at Carnoules, aioA gene more recent than those encoding subjected different molecular evolution. In contrast 16S ribosomal RNA (16S rRNA) associated with environments worldwide, functional aioA, ACR3, lesser extent arsB, either novel specific raising question whether are high concentrations arsenic, AMD-specific, site-specific