Comparative genomics unravels metabolic differences at the species and/or strain level and extremely acidic environmental adaptation of ten bacteria -belonging to the genus Acidithiobacillus

文献类型： 外文期刊

第一作者： Zhang, Xian

作者： Zhang, Xian;She, Siyuan;Dong, Weiling;Niu, Jiaojiao;Xiao, Yunhua;Liang, Yili;Liu, Xueduan;Yin, Huaqun;Zhang, Xian;She, Siyuan;Dong, Weiling;Niu, Jiaojiao;Xiao, Yunhua;Liang, Yili;Liu, Xueduan;Yin, Huaqun;Zhang, Xiaoxia;Zhang, Xiaoxia;Fan, Fenliang;Fan, Fenliang

作者机构：

关键词： Comparative genomic analysis;Acidithiobacillus;Cellular mechanisms;Metabolic differences;Environmental adaptation

期刊名称：SYSTEMATIC AND APPLIED MICROBIOLOGY （ 影响因子：4.022； 五年影响因子：4.396 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Members of the Acidithiobacillus genus are widely found in extreme environments characterized by low pH and high concentrations of toxic substances, thus it is necessary to identify the cellular mechanisms needed to cope with these harsh conditions. Pan-genome analysis of ten bacteria belonging to the genus Acidithiobacillus suggested the existence of core genome, most of which were assigned to the metabolism associated genes. Additionally, the unique genes of Acidithiobacillus ferrooxidans were much less than those of other species. A large proportion of Acidithiobacillus ferrivorans-specific genes were mapped especially to metabolism-related genes, indicating that diverse metabolic pathways might confer an advantage for adaptation to local environmental conditions. Analyses of functional metabolisms revealed the differences of carbon metabolism, nitrogen metabolism, and sulfur metabolism at the species and/or strain level. The findings also showed that Acidithiobacillus spp. harbored specific adaptive mechanisms for thriving under extreme environments. The genus Acidithiobacillus had the genetic potential to resist and metabolize toxic substances such as heavy metals and organic solvents. Comparison across species and/or strains of Acidithiobacillus populations provided a deeper appreciation of metabolic differences and environmental adaptation, as well as highlighting the importance of cellular mechanisms that maintain the basal physiological functions under complex acidic environmental conditions. (C) 2016 Elsevier GmbH. All rights reserved.

分类号： Q939.9

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