Please use this identifier to cite or link to this item:
Title: Effect of Cell Lysis (CLs) Products on Acidophilic Chemolithotrophic Microorganisms and the Role of Acidocella Species
Authors: Vardanyan, Arevik 
Achilleos, P. 
Kafa, N. 
Papadopoulou, M. 
Vardanyan, Narine S. 
Vyrides, Ioannis 
Keywords: Acidocella;Biodegradation;Cell lysis;Chemolithotrophic microorganisms;Heterotrophic microorganisms
Category: Earth and Related Environmental Sciences
Field: Natural Sciences
Issue Date: 4-May-2017
Publisher: Taylor and Francis Inc.
Source: Geomicrobiology Journal, 2017, Pages 1-7
metadata.dc.doi: 10.1080/01490451.2017.1300203
Abstract: Acidophilic chemolithotrophic microorganisms (CMs) are widely used for bioleaching of mineral resources. However, the growth of bacteria and their leaching activity are often inhibited (restricted) by organic components, e.g. lysates and exudates. The aims of this study were to examine the extent of cell lysis (CLs) inhibition on acidophilic microorganisms and to identify microorganisms that can utilize CLs products and eliminate their inhibition effect on acidophilic microorganisms. Specifically, it was revealed that Acidithiobacillus caldus was severely inhibited at 5% CLs products, whereas A. ferrooxidans and Leptospirillum ferriphilum are severely inhibited at 20%. It has been found that strains RBA and RBB of heterotrophic bacteria, isolated from anaerobic sludge, can biodegrade CLs products and when co-cultured with A. ferrooxidans, they can alleviate the toxic effect of CLs products under low pH (2–3). It has been shown that besides CLs, isolated strains can grow on glucose, glycerol, yeast extract, citric acid, and tryptone soya broth with an optimum temperature of 35°C and a pH of 3. The strains showed the ability to reduce ferric ions to ferrous ions when glycerol was used as a substrate after 2 days under both aerobic and anaerobic conditions. On the basis of morphophysiological and molecular biological studies, the isolated strains RBA and RBB were identified as Acidocella spp.
ISSN: 01490451
Rights: © 2017 Taylor & Francis Group, LLC
Type: Article
Appears in Collections:Άρθρα/Articles

Show full item record

Page view(s) 5

Last Week
Last month
checked on Feb 23, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.