PMID- 34544006
OWN - NLM
STAT- MEDLINE
DCOM- 20220114
LR  - 20220114
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 423
IP  - Pt B
DP  - 2022 Feb 5
TI  - Biochar reduced extractable dieldrin concentrations and promoted oligotrophic 
      growth including microbial degraders of chlorinated pollutants.
PG  - 127156
LID - S0304-3894(21)02124-5 [pii]
LID - 10.1016/j.jhazmat.2021.127156 [doi]
AB  - The role of organic amendments for natural degradation of aged persistent organic 
      pollutants (POPs) in agricultural soils remains controversial. We hypothesised 
      that organic amendments enhance bacterial activity and function at the community 
      level, facilitating the degradation of aged POPs. An incubation study was 
      conducted in a closed chamber over 12 months to assess the effects of selected 
      organic amendments on extractable residues of aged dieldrin. The role of 
      bacterial diversity and changes in community function was explored through 
      sequenced marker genes. Linear mixed effect models indicated that, independent of 
      amendment type, cumulative CO(2) release was negatively associated with decreases 
      in dieldrin concentration, by up to 7% per micromol CO(2)-C respired by 
      microorganisms. The addition of poultry litter led to the highest daily carbon 
      mineralisation, which was associated with low dieldrin dissipation after 9 
      months. In comparison, biochar resulted in significant decreases in extractable 
      dieldrin residues over time, which coincided with shifts towards aerobic, 
      oligotrophic, gram-negative bacteria, some with dehalogenation metabolism, and 
      with increased potentials for biosynthesis of membrane components such as fatty 
      acids and high redox quinones. The results supported an alternative theory that 
      labile carbon promoted blooms of copiotrophic growth, which suppressed the 
      required community-level traits and oligotrophic diversity to degrade chlorinated 
      pollutants.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Krohn, Christian
AU  - Krohn C
AD  - Department of Animal, Plant and Soil Sciences, Centre for AgriBioScience, La 
      Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia.
FAU - Zhang, Pei
AU  - Zhang P
AD  - Agriculture Victoria, Department of Jobs, Precincts and Regions, Macleod, VIC 
      3085, Australia.
FAU - Wood, Jennifer L
AU  - Wood JL
AD  - Department of Physiology, Anatomy and Microbiology, La Trobe University, 
      Melbourne Campus, Bundoora, VIC 3086, Australia; Centre for Future Landscapes, La 
      Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia.
FAU - Hayden, Helen L
AU  - Hayden HL
AD  - Agriculture Victoria, Department of Jobs, Precincts and Regions, Centre for 
      AgriBioscience Bundoora, VIC 3083, Australia.
FAU - Franks, Ashley E
AU  - Franks AE
AD  - Department of Physiology, Anatomy and Microbiology, La Trobe University, 
      Melbourne Campus, Bundoora, VIC 3086, Australia; Centre for Future Landscapes, La 
      Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia.
FAU - Jin, Jian
AU  - Jin J
AD  - Department of Animal, Plant and Soil Sciences, Centre for AgriBioScience, La 
      Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia. Electronic 
      address: j.jin@latrobe.edu.au.
FAU - Tang, Caixian
AU  - Tang C
AD  - Department of Animal, Plant and Soil Sciences, Centre for AgriBioScience, La 
      Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia. Electronic 
      address: c.tang@latrobe.edu.au.
LA  - eng
PT  - Journal Article
DEP - 20210909
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Environmental Pollutants)
RN  - 0 (Soil)
RN  - 0 (Soil Pollutants)
RN  - 0 (biochar)
RN  - 16291-96-6 (Charcoal)
RN  - I0246D2ZS0 (Dieldrin)
SB  - IM
MH  - Charcoal
MH  - Dieldrin
MH  - *Environmental Pollutants
MH  - Soil
MH  - Soil Microbiology
MH  - *Soil Pollutants/analysis
OTO - NOTNLM
OT  - Biodegradation
OT  - Copiotrophs
OT  - Organic amendments
OT  - Persistent organic pollutants
OT  - Phylogenetic diversity
OT  - Tillage
EDAT- 2021/09/21 06:00
MHDA- 2022/01/15 06:00
CRDT- 2021/09/20 20:28
PHST- 2021/05/19 00:00 [received]
PHST- 2021/09/03 00:00 [revised]
PHST- 2021/09/03 00:00 [accepted]
PHST- 2021/09/21 06:00 [pubmed]
PHST- 2022/01/15 06:00 [medline]
PHST- 2021/09/20 20:28 [entrez]
AID - S0304-3894(21)02124-5 [pii]
AID - 10.1016/j.jhazmat.2021.127156 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Feb 5;423(Pt B):127156. doi: 10.1016/j.jhazmat.2021.127156. 
      Epub 2021 Sep 9.