PMID- 22975652
OWN - NLM
STAT- MEDLINE
DCOM- 20130325
LR  - 20131121
IS  - 1879-1700 (Electronic)
IS  - 0265-931X (Linking)
VI  - 115
DP  - 2013 Jan
TI  - Radiation-induced impacts on the degradation of 2,4-D and the microbial 
      population in soil microcosms.
PG  - 168-74
LID - S0265-931X(12)00215-9 [pii]
LID - 10.1016/j.jenvrad.2012.08.008 [doi]
AB  - In a soil microcosm experiment, the influence of low-level (137)Cs and (90)Sr 
      contamination on the degradation of (14)C-ring-labeled 2,4-dichlorophenoxyacetic 
      acid (2,4-D) was studied. Two differently treated soils (one native soil and one 
      soil sterilized and reinoculated with a biotic soil aliquot) were artificially 
      contaminated with various concentrations of (137)Cs and (90)Sr as nitrate salts. 
      The cumulative doses increased up to 4 Gy for 30 days of incubation in soil 
      microcosms. Changes in microbial community structure were observed with help of 
      the denaturing gradient gel electrophoresis (DGGE). A radiation-induced impact 
      appeared only in the microcosms treated with 30 times the maximum contamination 
      appearing in the exclusion zone around reactor 4 in Chernobyl. In contrast to the 
      less contaminated soils, the mineralization of 2,4-D was delayed for 4 days 
      before it recovered. Slight shifts in the microbial communities could be traced 
      to radiation effects. However, other parameters had a major impact on 
      mineralization and community structure. Thus the sterilization and reinoculation 
      and, of course, application of the 2,4-D were predominantly reflected in the 
      (14)CO(2) emissions and the DGGE gel patterns.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - Niedree, Bastian
AU  - Niedree B
AD  - Agrosphere Institute, Forschungszentrum Julich GmbH, 52425 Julich, Germany. 
      b.niedree@fz-juelich.de
FAU - Vereecken, Harry
AU  - Vereecken H
FAU - Burauel, Peter
AU  - Burauel P
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120910
PL  - England
TA  - J Environ Radioact
JT  - Journal of environmental radioactivity
JID - 8508119
RN  - 0 (Cesium Radioisotopes)
RN  - 0 (DNA, Bacterial)
RN  - 0 (DNA, Fungal)
RN  - 0 (DNA, Ribosomal)
RN  - 0 (Herbicides)
RN  - 0 (Soil Pollutants)
RN  - 0 (Strontium Radioisotopes)
RN  - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid)
SB  - IM
MH  - 2,4-Dichlorophenoxyacetic Acid/*metabolism
MH  - Bacteria/*metabolism
MH  - Biodegradation, Environmental/drug effects
MH  - Cesium Radioisotopes/*pharmacology
MH  - DNA, Bacterial/genetics
MH  - DNA, Fungal/genetics
MH  - DNA, Ribosomal/genetics
MH  - Fungi/*metabolism
MH  - Herbicides/*metabolism
MH  - Soil Microbiology
MH  - Soil Pollutants/*metabolism/pharmacology
MH  - Strontium Radioisotopes/*pharmacology
EDAT- 2012/09/15 06:00
MHDA- 2013/03/26 06:00
CRDT- 2012/09/15 06:00
PHST- 2012/04/03 00:00 [received]
PHST- 2012/08/07 00:00 [revised]
PHST- 2012/08/12 00:00 [accepted]
PHST- 2012/09/15 06:00 [entrez]
PHST- 2012/09/15 06:00 [pubmed]
PHST- 2013/03/26 06:00 [medline]
AID - S0265-931X(12)00215-9 [pii]
AID - 10.1016/j.jenvrad.2012.08.008 [doi]
PST - ppublish
SO  - J Environ Radioact. 2013 Jan;115:168-74. doi: 10.1016/j.jenvrad.2012.08.008. Epub 
      2012 Sep 10.