دورية أكاديمية
Decomposition of leaves of the metallophyte Arabidopsis halleri in soil microcosms: fate of Zn and Cd from plant residues.
| العنوان: | Decomposition of leaves of the metallophyte Arabidopsis halleri in soil microcosms: fate of Zn and Cd from plant residues. |
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| المؤلفون: | Boucher U; Institut National de la Recherche Scientifique, Unité de Science du Sol, RD 10, 78026 Versailles cedex, France., Lamy I, Cambier P, Balabane M |
| المصدر: | Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2005 May; Vol. 135 (2), pp. 323-32. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 8804476 Publication Model: Print Cited Medium: Print ISSN: 0269-7491 (Print) Linking ISSN: 02697491 NLM ISO Abbreviation: Environ Pollut Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Barking, Essex, England : Elsevier Applied Science Publishers, c1987- |
| مواضيع طبية MeSH: | Arabidopsis/*metabolism , Copper/*pharmacokinetics , Plant Leaves/*metabolism , Soil/*analysis , Zinc/*pharmacokinetics, Biodegradation, Environmental ; Biomass ; Carbon/analysis ; Copper/analysis ; Hydrogen-Ion Concentration ; Soil Microbiology ; Zinc/analysis |
| مستخلص: | In order to better understand the fate of metals during the biodegradation of organic matter in soils, an in vitro incubation experiment was conducted with metal-rich and metal-free leaves of Arabidopsis halleri introduced in a non-contaminated soil. During incubation of these microcosms, we followed the partitioning of Zn and Cd between the solution and their solid components, by determining the metal contents of six soil fractions and dissolved metals after granulo-densimetric separations at selected times. Microbial biomass and exchangeable metals in K(2)SO(4) solutions were also determined at the same times, and two main stages were identified. The first one takes place after a fast abiotic transfer of Zn and Cd from readily soluble plant tissues onto fine soil constituents, keeping metals away from the liquid phase: during about 14 days, microbial biomass increased as well as metal contents of some soil fractions, particularly those rich in particulate organic matter. During the second stage, between 14 and 60 days and for the metal-rich microcosms, Zn and Cd contents in solution increased, while microbial biomass decreased instead of staying constant as in control. A change of Zn and Cd speciation is assumed, from non-toxic adsorbed forms to more toxic species in solution. Remaining metal-rich plant residues seem to create a stable organic C compartment in the soil. |
| المشرفين على المادة: | 0 (Soil) 7440-44-0 (Carbon) 789U1901C5 (Copper) J41CSQ7QDS (Zinc) |
| تواريخ الأحداث: | Date Created: 20050301 Date Completed: 20050628 Latest Revision: 20171116 |
| رمز التحديث: | 20240829 |
| DOI: | 10.1016/j.envpol.2004.07.031 |
| PMID: | 15734592 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0269-7491 |
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| DOI: | 10.1016/j.envpol.2004.07.031 |