PMID- 25800986
OWN - NLM
STAT- MEDLINE
DCOM- 20151228
LR  - 20181202
IS  - 1090-2414 (Electronic)
IS  - 0147-6513 (Linking)
VI  - 116
DP  - 2015 Jun
TI  - The influence of multiwalled carbon nanotubes on polycyclic aromatic hydrocarbon 
      (PAH) bioavailability and toxicity to soil microbial communities in alfalfa 
      rhizosphere.
PG  - 143-9
LID - S0147-6513(15)00095-0 [pii]
LID - 10.1016/j.ecoenv.2015.03.005 [doi]
AB  - Carbon nanotubes (CNTs) may affect bioavailability and toxicity of organic 
      contaminants due to their adsorption properties. Recent studies have observed the 
      influence of multiwalled carbon nanotubes (MWNTs) on the fate of polycyclic 
      aromatic hydrocarbons (PAHs) and other organic contaminants. Greenhouse studies 
      (49 d) were conducted with alfalfa plants in two different soil types. Four 
      treatment conditions (0, 25, 50, or 100 mg/kg MWNTs+100 mg/kg PAHs mixture-pyrene 
      and phenanthrene) were tested in order to determine their effects on soil 
      microbial community composition and PAH residues. Microbial community structure 
      in the two highest treatments (50 mg/kg and 100 mg/kg MWNTs) showed a dramatic 
      shift in the presence of MWNTs in sandy loam soil (1% organic matter) in 
      comparison to the control (0 mg/kg MWNTs). Many microbial fatty acid methyl ester 
      (FAMEs) markers (i15:0, 16:1omega5c, 10Me17:0, 10Me16:0) were missing in the control 
      soil. However, there was a lower abundance of these FAMEs in the 25 mg/kg MWNT 
      treatment (except 10Me17:0) and a higher presence of these FAMEs in the 50 mg/kg 
      and 100 mg/kg MWNT treatments compared to control. In contrast, microbial 
      community composition was not influenced by the MWNT treatments in sandy clay 
      loam soil (5.9% organic matter). However, pyrene degradation in sandy clay loam 
      soil significantly increased by 21% in the highest MWNT treatment group (100 
      mg/kg) and 9.34% in 50 mg/kg MWNT treatment. Under the conditions tested in this 
      study, MWNTs significantly impacted the soil microbial community distribution and 
      PAH degradation and effects were dependent on soil types, specifically organic 
      matter content.
CI  - Copyright (c) 2015 Elsevier Inc. All rights reserved.
FAU - Shrestha, Babina
AU  - Shrestha B
AD  - Department of Environmental Toxicology, The Institute of Environmental and Human 
      Health (TIEHH), Texas Tech University, Lubbock, TX, United States; Pegasus 
      Technical Services Inc., Cincinnati, OH, United States. Electronic address: 
      shrestha.babina@epa.gov.
FAU - Anderson, Todd A
AU  - Anderson TA
AD  - Department of Environmental Toxicology, The Institute of Environmental and Human 
      Health (TIEHH), Texas Tech University, Lubbock, TX, United States.
FAU - Acosta-Martinez, Veronica
AU  - Acosta-Martinez V
AD  - USDA-ARS, Cropping Systems Research Laboratory, Lubbock, TX, United States.
FAU - Payton, Paxton
AU  - Payton P
AD  - USDA-ARS, Cropping Systems Research Laboratory, Lubbock, TX, United States.
FAU - Canas-Carrell, Jaclyn E
AU  - Canas-Carrell JE
AD  - Department of Environmental Toxicology, The Institute of Environmental and Human 
      Health (TIEHH), Texas Tech University, Lubbock, TX, United States.
LA  - eng
PT  - Journal Article
DEP - 20150321
PL  - Netherlands
TA  - Ecotoxicol Environ Saf
JT  - Ecotoxicology and environmental safety
JID - 7805381
RN  - 0 (Fatty Acids)
RN  - 0 (Nanotubes, Carbon)
RN  - 0 (Phenanthrenes)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Pyrenes)
RN  - 0 (Soil Pollutants)
RN  - 448J8E5BST (phenanthrene)
RN  - 9E0T7WFW93 (pyrene)
SB  - IM
MH  - Biological Availability
MH  - Fatty Acids/analysis
MH  - Medicago sativa/metabolism
MH  - Nanotubes, Carbon/chemistry/*toxicity
MH  - Phenanthrenes/analysis
MH  - Plants/metabolism
MH  - Polycyclic Aromatic Hydrocarbons/analysis/*pharmacokinetics/toxicity
MH  - Pyrenes/analysis
MH  - *Rhizosphere
MH  - *Soil Microbiology
MH  - Soil Pollutants/*toxicity
OTO - NOTNLM
OT  - Carbon nanotubes
OT  - Microbial toxicity
OT  - Nanomaterials
OT  - Polycyclic aromatic hydrocarbons
EDAT- 2015/03/25 06:00
MHDA- 2015/12/29 06:00
CRDT- 2015/03/25 06:00
PHST- 2014/06/23 00:00 [received]
PHST- 2015/03/05 00:00 [revised]
PHST- 2015/03/06 00:00 [accepted]
PHST- 2015/03/25 06:00 [entrez]
PHST- 2015/03/25 06:00 [pubmed]
PHST- 2015/12/29 06:00 [medline]
AID - S0147-6513(15)00095-0 [pii]
AID - 10.1016/j.ecoenv.2015.03.005 [doi]
PST - ppublish
SO  - Ecotoxicol Environ Saf. 2015 Jun;116:143-9. doi: 10.1016/j.ecoenv.2015.03.005. 
      Epub 2015 Mar 21.