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Salt-tolerant Acidihalobacter and Acidithiobacillus species from Vulcano (Italy) and Milos (Greece).
Extremophiles ( IF 2.9 ) Pub Date : 2020-05-25 , DOI: 10.1007/s00792-020-01178-w
Paul R Norris 1, 2 , Carol S Davis-Belmar 1, 3 , Leonides A Calvo-Bado 1, 4 , Thomas J Ogden 1, 5
Affiliation  

Ferrous iron- and sulfur-oxidizing Acidihalobacter species and similar so far unclassified bacteria have been isolated from the islands of Vulcano (Italy) and Milos (Greece), specifically from where seawater was acidified at sulfide-rich geothermal sites. Acidithiobacillus species which tolerated concentrations of chloride that inhibit most Acidithiobacillus spp. were also isolated from sites on both islands: these were At. thiooxidans strains and an unclassified species, Acidithiobacillus sp. strain V1. The potential of salt-tolerant acidophiles for industrial application in promoting copper extraction from mineral sulfides where chloride is naturally present at concentrations which would inhibit most acidophiles, or where seawater rather than fresh water is available, appears to be limited by the sensitivity of ferrous-iron oxidizing Acidihalobacter spp. to copper. However, tolerance of copper and chloride shown by At. thiooxidans strain A7 suggests it could oxidize sulfur and benefit acid leaching if ferric iron or copper was provided as the primary oxidant of sulfide ores.

中文翻译:

来自Vulcano(意大利)和Milos(希腊)的耐盐酸性嗜盐杆菌和酸性硫杆菌种。

到目前为止,已经从武尔卡诺岛(意大利)和米洛斯岛(希腊),特别是在富含硫化物的地热场所将海水酸化的地方,分离出了氧化铁和硫的酸性嗜盐杆菌物种以及类似的未分类细菌。酸性硫杆菌属物种,其耐受的氯化物浓度可抑制大多数酸性硫杆菌属菌种。也是从两个岛上的地点隔离的:这些地点是At。氧化物菌株和一个未分类物种,酸性硫杆菌sp。菌株V1。耐盐嗜酸剂在工业应用中促进从矿物硫化物中提取铜的潜力受到氯化亚铁敏感性的限制,矿物硫化物天然存在氯化物,其浓度会抑制大多数嗜酸菌,或者存在海水而不是淡水。铁氧化性嗜盐杆菌属。铜。但是,铜和氯化物的耐受性由At表示。杆菌菌株A7表明它可能会氧化,如果三价铁或铜作为硫化物矿石的一次氧化剂所提供的硫和益处酸浸出。
更新日期:2020-05-25
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