Localized metal solubilization in the rhizosphere of Salix smithiana upon sulfur application

Environmental Science & Technology
Christoph HoeferW W Wenzel

Abstract

A metal-accumulating willow was grown under greenhouse conditions on a Zn/Cd-polluted soil to investigate the effects of sulfur (S(0)) application on metal solubility and plant uptake. Soil porewater samples were analyzed 8 times during 61 days of growth, while DGT-measured metal flux and O2 were chemically mapped at selected times. Sulfur oxidation resulted in soil acidification and related mobilization of Mn, Zn, and Cd, more pronounced in the rooted compared to bulk soil. Chemical imaging revealed increased DGT-measured Zn and Cd flux at the root-soil interface. Our findings indicated sustained microbial S(0) oxidation and associated metal mobilization close to root surfaces. The localized depletion of O2 along single roots upon S(0) addition indicated the contribution of reductive Mn (oxy)hydoxide dissolution with Mn eventually becoming a terminal electron acceptor after depletion of O2 and NO3(-). The S(0) treatments increased the foliar metal concentrations (mg kg(-1) dwt) up to 10-fold for Mn, (5810 ± 593), 3.3-fold for Zn (3850 ± 87.0), and 1.7-fold for Cd (36.9 ± 3.35), but had no significant influence on biomass production. Lower metal solubilization in the bulk soils should translate into reduced leaching, offering o...Continue Reading

References

Jun 1, 1997·Current Opinion in Biotechnology·R L ChaneyA J Baker
Nov 19, 2003·Environmental Science & Technology·Walter J FitzGerhard Stingeder
Jun 8, 2004·Journal of Experimental Botany·Michael A Kertesz, Pascal Mirleau
Jan 1, 1993·Applied and Environmental Microbiology·B ThamdrupF Bak
Sep 27, 2006·Environmental Science & Technology·Bernd NowackBrett H Robinson
Jan 24, 2007·Environmental Pollution·Maria Noel Dos Santos UtmazianWalter W Wenzel
Sep 4, 2007·Journal of Environmental Quality·Rufus L ChaneyDonald L Sparks
Apr 9, 2008·Journal of Hazardous Materials·Yuanpeng WangYingxu Chen
Jan 6, 2009·Chemosphere· SaifullahM H Zia
Jun 27, 2009·Environmental Science and Pollution Research International·Jaco VangronsveldMichel Mench
May 1, 2012·Journal of Environmental Management·Atul BhargavaShilpi Srivastava

❮ Previous
Next ❯

Citations

Jan 19, 2016·Trends in Plant Science·Eva Oburger, Hannes Schmidt
May 24, 2015·Analytica Chimica Acta·Jakob SantnerRonnie N Glud
Nov 4, 2016·Environmental Science and Pollution Research International·Pia Muhammad Adnan RamzaniMuhammad Iqbal
Apr 19, 2016·Scientific Reports·Shiming DingChaosheng Zhang
May 22, 2019·Environmental Science and Pollution Research International·Stanislava KroulíkováPavel Tlustoš
Mar 18, 2021·Environmental Science & Technology·Wen FangPaul N Williams

❮ Previous
Next ❯

Software Mentioned

SPSS Statistics
Visual MINTEQ

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.