Insights into the Fluoride-resistant Regulation Mechanism of Acidithiobacillus Ferrooxidans ATCC 23270 Based on Whole Genome Microarrays

Overview

Journal J Ind Microbiol Biotechnol

Publisher Oxford University Press

Specialty Biotechnology

Date 2016 Aug 13

PMID 27519020

Citations 5

Authors

Liyuan Ma

Qian Li

Li Shen

Xue Feng

Yunhua Xiao

Jiemeng Tao

Yili Liang

Huaqun Yin

Xueduan Liu

Affiliations

Soon will be listed here.

Abstract

Acidophilic microorganisms involved in uranium bioleaching are usually suppressed by dissolved fluoride ions, eventually leading to reduced leaching efficiency. However, little is known about the regulation mechanisms of microbial resistance to fluoride. In this study, the resistance of Acidithiobacillus ferrooxidans ATCC 23270 to fluoride was investigated by detecting bacterial growth fluctuations and ferrous or sulfur oxidation. To explore the regulation mechanism, a whole genome microarray was used to profile the genome-wide expression. The fluoride tolerance of A. ferrooxidans cultured in the presence of FeSO4 was better than that cultured with the S(0) substrate. The differentially expressed gene categories closely related to fluoride tolerance included those involved in energy metabolism, cellular processes, protein synthesis, transport, the cell envelope, and binding proteins. This study highlights that the cellular ferrous oxidation ability was enhanced at the lower fluoride concentrations. An overview of the cellular regulation mechanisms of extremophiles to fluoride resistance is discussed.

Citing Articles

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The link between ancient microbial fluoride resistance mechanisms and bioengineering organofluorine degradation or synthesis.

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Ecological influence by colonization of fluoride-resistant in oral biofilm.

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Cells Adapt to Resist Fluoride through Metabolic Deactivation and Intracellular Acidification.

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Principles of fluoride toxicity and the cellular response: a review.

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