Critical mercury concentration in tropical soils: Impact on plants and soil biological attributes

The Science of the Total Environment
F R D LimaJ J Marques

Abstract

Mercury is a toxic element that becomes a problem when present at high concentrations in soils. Mercury toxicity in soils varies depending on chemical species, concentration, exposure routes, and organism vulnerability. There is little information regarding the toxicity of Hg in tropical soils, especially for establishing safe levels of this pollutant. The purpose of this study was to investigate Hg concentrations in two tropical soils and their effect on oats and common beans, as well as on soil biological attributes. The experiment was carried out in a greenhouse, following ISO 11.269-2 and OECD-208 guidelines. Oat and common bean were cultivated in a Typic Hapludox (TyHpx) and Rhodic Acrudox (RhAcx) contaminated with HgCl2 at the following concentrations: 0, 2.5, 5.0, 10.0, 20.0, 40.0, and 80.0 mg of Hg kg-1 of dry soil. The biological variables analyzed were seedling emergence, vegetative growth, chlorophyll content (SPAD index), gas exchange (photosynthetic rate, internal CO2 concentration, transpiration rate, and stomatal conductance), and Hg concentration and accumulation in shoot dry matter. Microbial biomass carbon, soil basal respiration, and metabolic quotient (qCO2) were also analyzed. Due to the sorptive characteri...Continue Reading

References

Jun 28, 2003·FEMS Microbiology Reviews·Tamar BarkayAnne O Summers
Feb 28, 2004·Chemosphere·Mahalingam Ravichandran
Jan 12, 2010·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·N S CalgarotoF T Nicoloso
Mar 9, 2010·Analytica Chimica Acta·Kerstin LeopoldPaul Worsfold
May 18, 2010·The Science of the Total Environment·Sylvie RocheleauGeoffrey I Sunahara
Dec 3, 2014·Ecotoxicology and Environmental Safety·Cláudia C WindmöllerCláudia M do Valle
Mar 20, 2015·Bulletin of Environmental Contamination and Toxicology·Maria HojdováTomáš Navrátil
Jan 23, 2016·Ecotoxicology and Environmental Safety·Andressa Cristhy BuchEmmanoel Vieira Silva-Filho
Apr 14, 2016·Environmental Science and Pollution Research International·Cintia Carla NivaJörg Römbke
Mar 5, 2017·The Science of the Total Environment·Andressa Cristhy BuchEmmanoel Vieira Silva-Filho
Aug 24, 2017·Revista brasileira de epidemiologia = Brazilian journal of epidemiology·José Maria Farah CostaMaria da Conceição Nascimento Pinheiro
Sep 1, 2017·Environmental Science and Pollution Research International·Xiuhong DingJiulan Dai
Apr 29, 2018·Environment International·Khandaker Rayhan MahbubMaurizio Labbate
Nov 9, 2018·Environmental Science and Pollution Research International·Francielle R D LimaJoão José Marques
Dec 12, 2018·Ecotoxicology and Environmental Safety·Andres J MontoyaCláudia C Windmöller

❮ Previous
Next ❯

Citations

Oct 29, 2020·Environmental Science and Pollution Research International·Francielle Roberta Dias de LimaJoão José Marques
Jun 2, 2020·Chemosphere·Isabela C F VasquesJoão José Marques
Sep 23, 2020·Chemosphere·Isabela C F VasquesJoão José Marques

❮ 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.