NDLI: Biochemical properties and biodegradation of dissolved organic matter from soils

Content Provider	Springer Nature Link
Author	Bowen, Susan R. Gregorich, Edward G. Hopkins, David W.
Copyright Year	2009
Abstract	Various biologically mediated processes are involved in the turnover of dissolved organic matter (DOM) in soil; however, relatively little is known about the dynamics of either the microbial community or the individual classes of organic molecules during the decomposition of DOM. We examined the net loss of DOC, the mineralisation of C to CO2 and the degradation of DOC from six different soils by soil microorganisms. We also quantified the changes in the concentrations of protein, carbohydrate and amino acid C during microbial biodegradation. Over a 70-day incubation period at 20°C, the mineralisation of DOC to CO2 was described by a double exponential model with a labile pool (half-life, 3–8 days) and a stable pool (half-life, 0.4–6 years). However, in nearly all cases, the mass loss of DOC exceeded the C released as CO2 with significant deviations from the double exponential model. Comparison of mass DOC loss, CO2 production and microbial cell counts, determined by epifluorescence microscopy, showed that a proportion of the lost DOC mass could be accounted for by microbial assimilation. Carbohydrate and protein C concentrations fluctuated throughout the incubation with a net change of between 3 to 13 and −30 to 22.4% initial DOC, respectively. No amino acid C was detected during the incubation period (level of detection, 0.01 mg C l−1).
Starting Page	733
Ending Page	742
Page Count	10
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	45
Issue Number	7
e-ISSN	14320789
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-06-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Decomposition dynamics Dissolved organic carbon Dissolved organic matter DOC DOM Microbial assimilation Microbial decomposition Soil water Soil Science & Conservation Agriculture
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Microbiology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Microbial decomposition of leached or extracted dissolved organic carbon and nitrogen from pasture soils

Regulation of amino acid biodegradation in soil as affected by depth

The dynamics of dissolved organic N in the fumigated soils

Leaching of soil organic carbon and nitrogen in sandy soils after cultivating grass-clover swards

Soil microbial activity in relation to dissolved organic matter properties under different tree species

Composition, Dynamics, and Fate of Leached Dissolved Organic Matter in Terrestrial Ecosystems: Results from a Decomposition Experiment

Decomposition of added and native organic carbon from physically separated fractions of diverse soils

Short-Term Effects of Fertilization on Dissolved Organic Matter in Soil Leachate

Differential effects of composts on properties of soils with different textures

Biochemical properties and biodegradation of dissolved organic matter from soils

Similar Documents

Microbial decomposition of leached or extracted dissolved organic carbon and nitrogen from pasture soils

Regulation of amino acid biodegradation in soil as affected by depth

The dynamics of dissolved organic N in the fumigated soils

Leaching of soil organic carbon and nitrogen in sandy soils after cultivating grass-clover swards

Soil microbial activity in relation to dissolved organic matter properties under different tree species

Composition, Dynamics, and Fate of Leached Dissolved Organic Matter in Terrestrial Ecosystems: Results from a Decomposition Experiment

Decomposition of added and native organic carbon from physically separated fractions of diverse soils

Short-Term Effects of Fertilization on Dissolved Organic Matter in Soil Leachate

Differential effects of composts on properties of soils with different textures

Biochemical properties and biodegradation of dissolved organic matter from soils