The Open Biochemistry Journal




ISSN: 1874-091X ― Volume 12, 2018
REVIEW ARTICLE

Metal-Tolerant Thermophiles: From the Analysis of Resistance Mechanisms to their Biotechnological Exploitation



Giovanni Gallo, Rosanna Puopolo, Danila Limauro, Simonetta Bartolucci, Gabriella Fiorentino*
Department of Biology, University of Naples Federico II, Edificio 7, via Cinthia n. 6, 80126 Naples, Italy

Abstract

Extreme terrestrial and marine hot environments are excellent niches for specialized microorganisms belonging to the domains of Bacteria and Archaea; these microorganisms are considered extreme from an anthropocentric point of view because they are able to populate harsh habitats tolerating a variety of conditions, such as extreme temperature and/or pH, high metal concentration and/or salt; moreover, like all the microorganisms, they are also able to respond to sudden changes in the environmental conditions. Therefore, it is not surprising that they possess an extraordinary variety of dynamic and versatile mechanisms for facing different chemical and physical stresses. Such features have attracted scientists also considering an applicative point of view. In this review we will focus on the molecular mechanisms responsible for survival and adaptation of thermophiles to toxic metals, with particular emphasis on As(V), As(III), Cd(II), and on current biotechnologies for their detection, extraction and removal.

Keywords: Toxic metals, Resistance systems, Metal bioremediation, Thermostable biosensors, Environmental conditions, Physical stresses.


Article Information


Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 149
Last Page: 160
Publisher Id: TOBIOCJ-12-149
DOI: 10.2174/1874091X01812010149

Article History:

Received Date: 1/8/2018
Revision Received Date: 19/10/2018
Acceptance Date: 22/10/2018
Electronic publication date: 22/11/2018
Collection year: 2018

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© 2018 Gallo et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Department of Biology, University of Naples Federico II, Edificio 7, via Cinthia n. 6, 80126 Naples, Italy; Tel: +39081679167; E-mail: fiogabri@unina.it


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