PMID- 35114457
OWN - NLM
STAT- MEDLINE
DCOM- 20220304
LR  - 20220304
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 429
DP  - 2022 May 5
TI  - Priming effects of root exudates on the source-sink stability of benzo[a]pyrene 
      in wetlands: A microcosm experiment.
PG  - 128364
LID - S0304-3894(22)00152-2 [pii]
LID - 10.1016/j.jhazmat.2022.128364 [doi]
AB  - Although wetland is acknowledged as an effective ecosystem to remove persistent 
      organic pollutants (POPs), the change of environmental factors would switch 
      wetland from transient sink to permanent source. Thus, it is worthwhile to 
      meticulously study its source-sink dynamics. In this study, root exudates' effect 
      on the source-sink dynamics of benzo[a]pyrene (BaP) in a simulated wetland 
      sediment system was investigated, and the identification results of labile, 
      stable-adsorbed, and bound-residue fraction highlighted that root exudates' 
      priming effects could accelerate fraction transformation and depuration of BaP in 
      wetlands. The priming effects are the combination results of three different 
      pathways, including decrease in the interfacial tension of BaP (1.21-4.19%), 
      occurrence of co-metabolism processes (2.47-12.51%), and liberation of 
      mineral-bound pathways (1.82-83.14%). All these pathways promoted the abiotic and 
      biotic BaP removal processes, which reduced the half-life of BaP from 42 days to 
      13 days, and subsequently reduced the hazard potential of BaP in the wetland. 
      Root exudates' priming effects accounted for over 99.84% in total dissipation of 
      BaP, regulated the source-sink stability of the wetlands contaminated by BaP. The 
      source-sink dynamics provides a conceptual framework for understanding 
      environmental fate, risk assessment and further storage management of POPs in 
      wetlands.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Chen, Xinhan
AU  - Chen X
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China.
FAU - Hu, Zhen
AU  - Hu Z
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China. Electronic address: huzhen885@sdu.edu.cn.
FAU - Xie, Huijun
AU  - Xie H
AD  - Environmental Research Institute, Shandong University, Qingdao 266237, PR China.
FAU - Zhang, Jian
AU  - Zhang J
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China; College of Safety and Environmental Engineering, Shandong University of 
      Science and Technology, Qingdao 266590, PR China. Electronic address: 
      zhangjian00@sdu.edu.cn.
FAU - Liang, Shuang
AU  - Liang S
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China.
FAU - Wu, Haiming
AU  - Wu H
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China.
FAU - Zhuang, Linlan
AU  - Zhuang L
AD  - School of Environmental Science & Engineering, Shandong Key Laboratory of Water 
      Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, PR 
      China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220129
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 3417WMA06D (Benzo(a)pyrene)
SB  - IM
MH  - *Benzo(a)pyrene/metabolism
MH  - Biodegradation, Environmental
MH  - Ecosystem
MH  - Exudates and Transudates/chemistry/metabolism
MH  - *Wetlands
OTO - NOTNLM
OT  - Benzo[a]pyrene
OT  - Dissolved organic matter
OT  - Priming effect
OT  - Root exudates
OT  - The source-sink stability
OT  - Wetlands
EDAT- 2022/02/04 06:00
MHDA- 2022/03/05 06:00
CRDT- 2022/02/03 20:14
PHST- 2021/11/03 00:00 [received]
PHST- 2022/01/13 00:00 [revised]
PHST- 2022/01/24 00:00 [accepted]
PHST- 2022/02/04 06:00 [pubmed]
PHST- 2022/03/05 06:00 [medline]
PHST- 2022/02/03 20:14 [entrez]
AID - S0304-3894(22)00152-2 [pii]
AID - 10.1016/j.jhazmat.2022.128364 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 May 5;429:128364. doi: 10.1016/j.jhazmat.2022.128364. Epub 
      2022 Jan 29.