Journal or Publishing Institution: Applied Soil Ecology
Study: https://www.sciencedirect.com/science/article/pii/S092913930900211X
Author(s): Zobiole, L.H.S., Oliveira Jr, R.S., Kremer, R.J., Constantin, J., Yamada, T., Castro, C., Oliveira, F.A. and Oliveira Jr, A.
Article Type: Peer Reviewed Study
Record ID: 1767
Abstract: Decreased biological nitrogen fixation in glyphosate-resistant (GR) soybeans has been attributed directly to toxicity of glyphosate or its metabolites, to N2-fixing microorganisms. As a strong metal chelator, glyphosate could influence symbiotic N2 fixation by lowering the concentration of nickel (Ni) that is essential for the symbiotic microorganisms. Evaluation of different cultivars grown on different soil types at the State University of Maringa ́, PR, Brazil during the summer 2008 revealed, significant decreases in photosynthetic parameters (chlorophyll, photosynthetic rate, transpiration and stomatal conductance) and nickel content with glyphosate use (single or sequential application). This work demonstrated that glyphosate can influence the symbiotic N2 fixation by lowering nickel content available to the symbiotic microorganisms.
Keywords: Glyphosate, Nickel, Symbiosis, Photosynthesis, Glyphosate-Resistant Soybean; Soybeans, Nitrogen Fixation, Glycine Max; Glycine (Fabaceae), Chlorophyll, Cultivars, Evaluation, Herbicides, Metabolites, Microorganisms, Nitrogen, Soyabeans, Summer, Transpiration; Carbon Assimilation, Carbon Dioxide Fixation, Cultivated Varieties, Micro-Organisms, Weedicides, Weedkillers, Brazil
Citation: Zobiole, L.H.S., Oliveira Jr, R.S., Kremer, R.J., Constantin, J., Yamada, T., Castro, C., Oliveira, F.A. and Oliveira Jr, A., 2010. Effect of glyphosate on symbiotic N2 fixation and nickel concentration in glyphosate-resistant soybeans. Applied Soil Ecology, 44(2), pp.176-180.
