PMID: 16856729Jul 22, 2006Paper

Effects of surface sorption on microbial degradation of glyphosate

Environmental Science & Technology
Ylva SchnurerReiner Giesler

Abstract

Sorption may affect the bioavailability and biodegradation of pesticides in soils. The aim of this study was to test the effect of surface sorption on microbial utilization of the herbicide glyphosate as a source of phosphorus, nitrogen, or carbon. We added goethite to a humus soil to manipulate the soil's glyphosate sorption capacity. The addition of glyphosate generally either decreased microbial CO2 production or produced no effect. Additions of glyphosate, in combination with glucose and N, did not change the respiration rate in comparison with the same treatment but without glyphosate. In contrast, glyphosate additions combined with glucose and P decreased microbial growth, whereas the combination with goethite counteracted the negative effect. The different treatments were examined using attenuated total reflectance Fourier transform (ATR-FTIR) spectroscopy; the results suggest that glyphosate was de-carboxylated in the sorbed state. Stimulating microbial growth by the addition of glucose and nitrogen resulted in further oxidation of glyphosate and only phosphate was detectable on the goethite surface after 13 days incubation. Our results show that sorbed glyphosate is microbially degradable, and it retards microbial acti...Continue Reading

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Citations

Aug 3, 2010·Applied Microbiology and Biotechnology·Inna T ErmakovaAlexey A Leontievsky
Dec 18, 2012·Environmental Technology·Hao CuiJianping Zhai
Jan 14, 2016·The Science of the Total Environment·A CassigneulL Alletto
May 8, 2009·Environmental Pollution·Pascale Besse-HogganClaude Forano
Oct 16, 2013·Chemosphere·Christopher C HowellGary D Bending
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Dec 28, 2007·Pest Management Science·Ole K Borggaard, Anne Louise Gimsing
Feb 16, 2008·Pest Management Science·Martin A LockeKrishna N Reddy
Nov 27, 2019·Plants·Ramdas KanisseryFernando Alferez
Dec 21, 2018·The Science of the Total Environment·Fiona H M TangFederico Maggi
Apr 17, 2009·Environmental Science & Technology·Benny Chefetz, Baoshan Xing
May 5, 2009·Journal of Agricultural and Food Chemistry·Robert M ZablotowiczKrishna N Reddy

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