Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Radiotracer evidence that the rhizosphere is a hot-spot for chlorination of soil organic matter
Linköping University, Department of Thematic Studies, Tema Environmental Change. Linköping University, Faculty of Arts and Sciences. Structor Miljö Öst AB Linköping Sweden.
Linköping University, Department of Thematic Studies, Tema Environmental Change. Linköping University, Faculty of Arts and Sciences.ORCID iD: 0000-0002-6471-143X
EDF R&D LNHE - Laboratoire National d’Hydraulique et Environnement Chatou, France.
Andra, Research and Development Division, Parc de la Croix Blanche Châtenay-Malabry Cedex, France.
Show others and affiliations
2019 (English)In: Plant and Soil, ISSN 0032-079X, Vol. 443, no 1-2, p. 245-257Article in journal (Refereed) Published
Abstract [en]

Aims

The ubiquitous and extensive natural chlorination of organic matter in soils, leading to levels of chlorinated soil organic matter that often exceed the levels of chloride, remains mysterious in terms of its causes and regulation. While the composition of plant species and the availability of labile organic matter was recently shown to be important, the physical localization of chlorination in soils remains unclear but is a key for understanding regulation and patterns observed. Here we assess the relative importance of organic matter chlorination in (a) bulk soil, (b) the plant roots plus the rhizosphere zone surrounding the roots, and (c) above-ground plant biomass, in an experimental plant-soil system.

Methods

A radiotracer, 36Cl, was added to study translocation and transformations of Cl and Clorg in agricultural soil with and without wheat (Triticum vulgare) over 50 days.

Results

The specific chlorination rates (the fraction of the added 36Cl converted to 36Clorg per day) in soil with plants was much higher (0.02 d−1) than without plants (0.0007 d−1) at peak growth (day 25). The plant root and rhizosphere showed much higher formation of 36Clorg than the bulk soil, suggesting that the rhizosphere is a hotspot for chlorination in the soil. In addition, the treatment with plants displayed a rapid and high plant uptake of Cl.

Conclusions

Our results indicate that the rhizosphere harbour the most extensive in-situ chlorination process in soil and that root-soil interaction may be key for terrestrial chlorine cycling.

Place, publisher, year, edition, pages
Springer, 2019. Vol. 443, no 1-2, p. 245-257
Keywords [en]
Organic chlorine, Chloride, Wheat, Chlorination, 36Cl, uptake
Keywords [sv]
Organiskt klor, klorid, vete, klorering, 36Cl, upptag
National Category
Soil Science Food Science Ecology
Identifiers
URN: urn:nbn:se:liu:diva-159183DOI: 10.1007/s11104-019-04180-0ISI: 000493661800016OAI: oai:DiVA.org:liu-159183DiVA, id: diva2:1339746
Note

Funding agencies: Linkoping University; EDF, France; National Radioactive Waste Management Agency (Andra), France; Linkoping University, Sweden

Available from: 2019-07-31 Created: 2019-07-31 Last updated: 2019-11-19Bibliographically approved

Open Access in DiVA

fulltext(701 kB)6 downloads
File information
File name FULLTEXT01.pdfFile size 701 kBChecksum SHA-512
8097666322b2aba0eef46344c26686ce61d17630af48c3d62b438d328bf4d93575967408c4ebc812bea871346f48c1e485d225dc18bb2db4e4ecbb67d28092b6
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Montelius, MalinSvensson, TeresiaBastviken, David
By organisation
Tema Environmental ChangeFaculty of Arts and Sciences
Soil ScienceFood ScienceEcology

Search outside of DiVA

GoogleGoogle Scholar
Total: 6 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 52 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf