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A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed by CuO Nanoparticles.
PLoS One. 2016; 11(10):e0164635.Plos

Abstract

Nanoparticle (NPs) containing essential metals are being considered in formulations of fertilizers to boost plant nutrition in soils with low metal bioavailability. This paper addresses whether colonization of wheat roots by the bacterium, Pseudomonas chlororaphis O6 (PcO6), protected roots from the reduced elongation caused by CuO NPs. There was a trend for slightly elongated roots when seedlings with roots colonized by PcO6 were grown with CuO NPs; the density of bacterial cells on the root surface was not altered by the NPs. Accumulations of reactive oxygen species in the plant root cells caused by CuO NPs were little affected by root colonization. However, bacterial colonization did reduce the extent of expression of an array of genes associated with plant responses to stress induced by root exposure to CuO NPs. PcO6 colonization also reduced the levels of two important chelators of Cu ions, citric and malic acids, in the rhizosphere solution; presumably because these acids were used as nutrients for bacterial growth. There was a trend for lower levels of soluble Cu in the rhizosphere solution and reduced Cu loads in the true leaves with PcO6 colonization. These studies indicate that root colonization by bacterial cells modulates plant responses to contact with CuO NPs.

Authors+Show Affiliations

Department of Biological Engineering, Utah State University, Logan, Utah, 84322 4105, United States of America.Department of Biology, Utah State University, Logan, Utah, 84322 5305, United States of America.Department of Biological Engineering, Utah State University, Logan, Utah, 84322 4105, United States of America.Utah Water Research Laboratory, Utah State University, Logan, Utah, 84321, United States of America.Plants Soils and Climate, Utah State University, Logan, Utah, 84322 4820, United States of America.Department of Biological Engineering, Utah State University, Logan, Utah, 84322 4105, United States of America.Utah Water Research Laboratory, Utah State University, Logan, Utah, 84321, United States of America.Department of Biology, Utah State University, Logan, Utah, 84322 5305, United States of America.Department of Biological Engineering, Utah State University, Logan, Utah, 84322 4105, United States of America.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27776146

Citation

Wright, Melanie, et al. "A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed By CuO Nanoparticles." PloS One, vol. 11, no. 10, 2016, pp. e0164635.
Wright M, Adams J, Yang K, et al. A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed by CuO Nanoparticles. PLoS ONE. 2016;11(10):e0164635.
Wright, M., Adams, J., Yang, K., McManus, P., Jacobson, A., Gade, A., McLean, J., Britt, D., & Anderson, A. (2016). A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed by CuO Nanoparticles. PloS One, 11(10), e0164635. https://doi.org/10.1371/journal.pone.0164635
Wright M, et al. A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed By CuO Nanoparticles. PLoS ONE. 2016;11(10):e0164635. PubMed PMID: 27776146.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A Root-Colonizing Pseudomonad Lessens Stress Responses in Wheat Imposed by CuO Nanoparticles. AU - Wright,Melanie, AU - Adams,Joshua, AU - Yang,Kwang, AU - McManus,Paul, AU - Jacobson,Astrid, AU - Gade,Aniket, AU - McLean,Joan, AU - Britt,David, AU - Anderson,Anne, Y1 - 2016/10/24/ PY - 2016/06/13/received PY - 2016/09/28/accepted PY - 2016/10/25/pubmed PY - 2017/6/21/medline PY - 2016/10/25/entrez SP - e0164635 EP - e0164635 JF - PloS one JO - PLoS ONE VL - 11 IS - 10 N2 - Nanoparticle (NPs) containing essential metals are being considered in formulations of fertilizers to boost plant nutrition in soils with low metal bioavailability. This paper addresses whether colonization of wheat roots by the bacterium, Pseudomonas chlororaphis O6 (PcO6), protected roots from the reduced elongation caused by CuO NPs. There was a trend for slightly elongated roots when seedlings with roots colonized by PcO6 were grown with CuO NPs; the density of bacterial cells on the root surface was not altered by the NPs. Accumulations of reactive oxygen species in the plant root cells caused by CuO NPs were little affected by root colonization. However, bacterial colonization did reduce the extent of expression of an array of genes associated with plant responses to stress induced by root exposure to CuO NPs. PcO6 colonization also reduced the levels of two important chelators of Cu ions, citric and malic acids, in the rhizosphere solution; presumably because these acids were used as nutrients for bacterial growth. There was a trend for lower levels of soluble Cu in the rhizosphere solution and reduced Cu loads in the true leaves with PcO6 colonization. These studies indicate that root colonization by bacterial cells modulates plant responses to contact with CuO NPs. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/27776146/A_Root_Colonizing_Pseudomonad_Lessens_Stress_Responses_in_Wheat_Imposed_by_CuO_Nanoparticles_ L2 - http://dx.plos.org/10.1371/journal.pone.0164635 DB - PRIME DP - Unbound Medicine ER -