Mercury accumulation in grass and forb species as a function of atmospheric carbon dioxide concentrations and mercury exposures in air and soil

Chemosphere
Allison G MillhollenMae Sexauer Gustin

Abstract

The goal of this study was to investigate the potential for atmospheric Hg degrees uptake by grassland species as a function of different air and soil Hg exposures, and to specifically test how increasing atmospheric CO(2) concentrations may influence foliar Hg concentrations. Four common tallgrass prairie species were germinated and grown for 7 months in environmentally controlled chambers using two different atmospheric elemental mercury (Hg major; 3.7+/-2.0 and 10.2+/-3.5 ng m(-3)), soil Hg (<0.01 and 0.15+/-0.08 micro g g(-1)), and atmospheric carbon dioxide (CO(2)) (390+/-18, 598+/-22 micro mol mol(-1)) exposures. Species used included two C4 grasses and two C3 forbs. Elevated CO(2) concentrations led to lower foliar Hg concentrations in plants exposed to low (i.e., ambient) air Hg degrees concentrations, but no CO(2) effect was apparent at higher air Hg degrees exposure. The observed CO(2) effect suggests that leaf Hg uptake might be controlled by leaf physiological processes such as stomatal conductance which is typically reduced under elevated CO(2). Foliar tissue exposed to elevated air Hg degrees concentrations had higher concentrations than those exposed to low air Hg degrees , but only when also exposed to elevated ...Continue Reading

References

Jan 31, 2004·Environmental Science & Technology·Christian SeigneurCourtney Scott
Apr 15, 2004·The Science of the Total Environment·J A Ericksen, M S Gustin
Sep 27, 2005·The Science of the Total Environment·J A EricksenG C J Fernandez
Mar 1, 1978·Plant Physiology·C L Browne, S C Fang
Oct 21, 2006·Environmental Science & Technology·Allison G MillhollenDaniel Obrist

❮ Previous
Next ❯

Citations

Sep 5, 2008·Oecologia·Susan M NataliManuel T Lerdau
Apr 17, 2013·Environmental Science and Pollution Research International·Zhenchuan NiuZhangwei Wang
May 29, 2012·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Jian Chen, Zhi Min Yang
Dec 24, 2015·Chemosphere·Mohamad AssadFabienne Tatin-Froux
Feb 14, 2014·Journal of Environmental Sciences (China)·Kelin WangWeiping Pan
Sep 29, 2009·The Science of the Total Environment·Eden I H SiwikGregory Mierle
Apr 7, 2009·Journal of Hazardous Materials·A García-SánchezM A Rodríguez-González
Nov 1, 2013·Environmental Toxicology and Chemistry·Liwei CuiHeng Wang
Jun 5, 2015·Journal of Environmental Sciences (China)·Andressa Cristhy BuchEmmanoel Vieira Silva-Filho
Jul 5, 2011·Environmental Pollution·Zhenchuan NiuZhijia Ci
Mar 12, 2013·Environmental Research·Martin Lodenius
Apr 7, 2010·Environmental Pollution·Eden I H SiwikGregory Mierle
Dec 22, 2008·Atmospheric Chemistry and Physics·J FritscheC Alewell
Jul 23, 2014·Environmental Science and Pollution Research International·Zoran PetrovićMirjana Lukić
May 16, 2017·Environmental Pollution·Martin R RischDavid P Krabbenhoft
Feb 13, 2019·The Science of the Total Environment·Christine L OlsonDaniel Obrist
Mar 15, 2018·Environmental Science & Technology·Alain ManceauXinbin Feng
Mar 17, 2011·Environmental Science & Technology·Benjamin D DuvalBruce A Hungate
Oct 21, 2006·Environmental Science & Technology·Allison G MillhollenDaniel Obrist

❮ Previous
Next ❯

Related Concepts

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.

© 2022 Meta ULC. All rights reserved