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Components from wheat roots modify the bioactivity of ZnO and CuO nanoparticles in a soil bacterium.
Environ Pollut. 2014 Apr; 187:65-72.EP

Abstract

ZnO and CuO nanoparticles (NPs) have widespread commercial uses and their impact on agricultural systems is unresolved. This study examined whether the metabolites washed from wheat (Triticum aestivum L.) roots modulated the metabolic response to the NPs of a biosensor generated in the root colonizer, Pseudomonas putida KT2440. The root wash components boosted light output of the biosensor consistent with their catabolism. Dose-dependent and rapid inhibition of cell metabolism occurred with both ZnO and CuO NPs in water suspensions but high light output was maintained in root wash. Root wash also protected biosensor output in challenges with Zn ions. However the root wash components did not protect culturability or biosensor light output upon exposure to Cu ions. Imaging by atomic force microscopy suggested that root wash materials coated the NPs. We deduced that the response of a microbe to these metal oxide NPs could be negated by components released from roots.

Authors+Show Affiliations

Department of Biology, Utah State University, Logan, UT 84322-5305, USA.Utah Water Research Laboratory, Utah State University, Logan, UT 84322-5305, USA.Department of Biology, Utah State University, Logan, UT 84322-5305, USA.Department of Biological Engineering, Utah State University, Logan, UT 84322-5305, USA.Department of Biology, Utah State University, Logan, UT 84322-5305, USA. Electronic address: anne.anderson@usu.edu.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

24448483

Citation

Martineau, Nicole, et al. "Components From Wheat Roots Modify the Bioactivity of ZnO and CuO Nanoparticles in a Soil Bacterium." Environmental Pollution (Barking, Essex : 1987), vol. 187, 2014, pp. 65-72.
Martineau N, McLean JE, Dimkpa CO, et al. Components from wheat roots modify the bioactivity of ZnO and CuO nanoparticles in a soil bacterium. Environ Pollut. 2014;187:65-72.
Martineau, N., McLean, J. E., Dimkpa, C. O., Britt, D. W., & Anderson, A. J. (2014). Components from wheat roots modify the bioactivity of ZnO and CuO nanoparticles in a soil bacterium. Environmental Pollution (Barking, Essex : 1987), 187, 65-72. https://doi.org/10.1016/j.envpol.2013.12.022
Martineau N, et al. Components From Wheat Roots Modify the Bioactivity of ZnO and CuO Nanoparticles in a Soil Bacterium. Environ Pollut. 2014;187:65-72. PubMed PMID: 24448483.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Components from wheat roots modify the bioactivity of ZnO and CuO nanoparticles in a soil bacterium. AU - Martineau,Nicole, AU - McLean,Joan E, AU - Dimkpa,Christian O, AU - Britt,David W, AU - Anderson,Anne J, Y1 - 2014/01/20/ PY - 2013/07/27/received PY - 2013/12/19/revised PY - 2013/12/23/accepted PY - 2014/1/23/entrez PY - 2014/1/23/pubmed PY - 2014/4/25/medline KW - Biosensor KW - Metal speciation nanoparticles KW - Pseudomonad KW - Wheat SP - 65 EP - 72 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 187 N2 - ZnO and CuO nanoparticles (NPs) have widespread commercial uses and their impact on agricultural systems is unresolved. This study examined whether the metabolites washed from wheat (Triticum aestivum L.) roots modulated the metabolic response to the NPs of a biosensor generated in the root colonizer, Pseudomonas putida KT2440. The root wash components boosted light output of the biosensor consistent with their catabolism. Dose-dependent and rapid inhibition of cell metabolism occurred with both ZnO and CuO NPs in water suspensions but high light output was maintained in root wash. Root wash also protected biosensor output in challenges with Zn ions. However the root wash components did not protect culturability or biosensor light output upon exposure to Cu ions. Imaging by atomic force microscopy suggested that root wash materials coated the NPs. We deduced that the response of a microbe to these metal oxide NPs could be negated by components released from roots. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/24448483/Components_from_wheat_roots_modify_the_bioactivity_of_ZnO_and_CuO_nanoparticles_in_a_soil_bacterium_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(13)00655-6 DB - PRIME DP - Unbound Medicine ER -