Development of metal tolerance in soil bacterial communities exposed to experimentally increased metal levels.

Applied and Environmental Microbiology
M Diaz-Ravina, E Baath

Abstract

The development of metal tolerance in soil bacterial communities exposed to different heavy metals was examined under laboratory conditions. An agricultural soil amended with different Zn concentrations was studied most intensively, and measurements were made over a 28-month incubation period by means of the thymidine incorporation technique. Tolerance levels were not affected by metal concentrations lower than 2 mmol of Zn kg (dry weight) of soil(sup-1), but above this value, the level of Zn tolerance increased exponentially with the logarithm of the soil Zn concentration. An increased metal tolerance was detected after only 2 days of Zn exposure. Thereafter, stable tolerance values were observed at different sampling times for bacterial communities exposed to up to 8 mmol of Zn kg (dry weight)(sup-1), indicating no changes in tolerance with time. The tolerance of bacterial communities exposed to 32 mmol of Zn kg (dry weight)(sup-1) increased rapidly within the second week of incubation, but then the values remained unchanged until the end of the experiment. Bacterial communities from soil contaminated with 16 mmol of Zn kg (dry weight)(sup-1) showed an increase of the same magnitude, but the increase started later, after 4 mo...Continue Reading

Citations

Aug 18, 2009·Applied and Environmental Microbiology·Peter S KourtevAllan Konopka
May 24, 2013·Journal of Aquatic Animal Health·Eric J Wagner, Randall W Oplinger
Feb 18, 2004·Journal of Environmental Quality·Farhana Alamgir RahmanMichael J Sadowsky
Jun 5, 2008·FEMS Microbiology Ecology·Julia R de LipthaySøren J Sørensen
Aug 16, 2015·Applied and Environmental Microbiology·Erland Bååth, Emma Kritzberg
Jul 31, 2001·Journal of Environmental Quality·O KiikkiläH Fritze
Apr 7, 2004·Applied and Environmental Microbiology·Kevin P FerisWilliam E Holben
Oct 30, 2007·Journal of Environmental Quality·M Díaz-RaviñaE Bååth
Sep 29, 2011·Environmental Science and Pollution Research International·Olivier PringaultRobert Duran
Apr 7, 2007·Journal of Environmental Quality·Ioannis Ipsilantis, Mark S Coyne
Jan 20, 2009·International Journal of Environmental Research and Public Health·Dmitri Sobolev, Maria F T Begonia
Mar 7, 2014·Environmental Science and Pollution Research International·Liang ChenFeng Liu
Sep 6, 2003·Applied and Environmental Microbiology·Kevin FerisWilliam E Holben
Oct 10, 2002·Journal of Environmental Quality·K SaekiS Matsumoto
Dec 21, 2007·FEMS Microbiology Ecology·Anna LazzaroBeat Frey
Jul 11, 2014·Environmental Science and Pollution Research International·Ludovic BesauryLaurent Quillet
Jul 1, 2003·FEMS Microbiology Ecology·Marie Pettersson, Erland Bååth
Feb 15, 2008·Archives of Environmental Contamination and Toxicology·Ann-Charlotte M ToesGerard Muyzer
Jul 27, 1999·Canadian Journal of Microbiology·H BrimK Smalla
May 7, 2004·Applied and Environmental Microbiology·R M C P RajapakshaE Bååth
Dec 14, 2005·Applied and Environmental Microbiology·E BååthC D Campbell
Oct 24, 2018·FEMS Microbiology Ecology·Michael McTeePhilip W Ramsey

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.