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来自哥伦比亚加勒比地区高盐土壤的高氯酸盐还原菌

Perchlorate-Reducing Bacteria from Hypersaline Soils of the Colombian Caribbean.

作者信息

Acevedo-Barrios Rosa, Bertel-Sevilla Angela, Alonso-Molina Jose, Olivero-Verbel Jesus

机构信息

Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, Zaragocilla Campus, University of Cartagena, Cartagena 130015, Colombia.

Biological and Chemical Studies Group, School of Basic Sciences, Technological University of Bolívar, Cartagena 130010, Colombia.

出版信息

Int J Microbiol. 2019 Feb 17;2019:6981865. doi: 10.1155/2019/6981865. eCollection 2019.

DOI:10.1155/2019/6981865
PMID:30906324
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6398020/
Abstract

Perchlorate (ClO ) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies for bioremediation in polluted sites. The aim of this study was to isolate and characterize halophilic bacteria with the potential for perchlorate reduction. Ten bacterial strains were isolated from soils of Galerazamba-Bolivar, Manaure-Guajira, and Salamanca Island-Magdalena, Colombia. Isolates grew at concentrations up to 30% sodium chloride. The isolates tolerated pH variations ranging from 6.5 to 12.0 and perchlorate concentrations up to 10000 mg/L. Perchlorate was degraded by these bacteria on percentages between 25 and 10. 16S rRNA gene sequence analysis indicated that the strains were phylogenetically related to , , , , and genera. In conclusion, halophilic-isolated bacteria from hypersaline soils of the Colombian Caribbean are promising resources for the bioremediation of perchlorate contamination.

摘要

高氯酸盐（ClO ）有多种工业用途，并且在环境基质中经常检测到对人类健康有相关影响的浓度。目前，高氯酸盐降解细菌是污染场地生物修复的有前景的策略。本研究的目的是分离和鉴定具有高氯酸盐还原潜力的嗜盐细菌。从哥伦比亚的加勒拉赞巴-玻利瓦尔、马瑙雷-瓜希拉和萨拉曼卡岛-马格达莱纳的土壤中分离出10株细菌菌株。分离菌株在高达30%氯化钠浓度下生长。分离菌株能耐受pH值在6.5至12.0之间的变化以及高达10000 mg/L的高氯酸盐浓度。这些细菌对高氯酸盐的降解率在25%至10%之间。16S rRNA基因序列分析表明，这些菌株在系统发育上与 、 、 、 和 属相关。总之，从哥伦比亚加勒比地区高盐土壤中分离出的嗜盐细菌是高氯酸盐污染生物修复的有前景的资源。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/4c7848314866/IJMICRO2019-6981865.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/5720d66bf41d/IJMICRO2019-6981865.001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/4c7848314866/IJMICRO2019-6981865.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/5720d66bf41d/IJMICRO2019-6981865.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/51cd9efa73d3/IJMICRO2019-6981865.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/e9d31c50abeb/IJMICRO2019-6981865.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/1a2d32efea31/IJMICRO2019-6981865.004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/f628296a1479/IJMICRO2019-6981865.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a116/6398020/4c7848314866/IJMICRO2019-6981865.007.jpg

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