NDLI: Denitrifying capacity of rhizobial strains of Argentine soils and herbicide sensitivity

Content Provider	Springer Nature Link
Author	Vercellino, Magalí Gómez, Marisa Anahí
Copyright Year	2013
Abstract	Agrochemical application in soils is a matter of environmental concern, and among soil microorganisms, rhizobia and their action before different pesticides are interesting to study, due to their taxonomic and functional diversity. The objectives of the present work were to assess the capacity of rhizobial populations to use herbicides as source of nutrients, as well as their ability to reduce nitrates and / or denitrify. Eighty-one strains belonging to four populations of different genera of rhizobia (Rhizobium, Mesorhizobium, Ensifer and Bradyrhizobium) were assessed. The effect of glyphosate, 2,4-dichlorophenoxyacetic acid, and atrazine on growth of the strains, as well as the ability of the strains to act on herbicide transformation to reduce nitrate and denitrify, were evaluated. The genera studied showed different responses to pesticides. Bradyrhizobium had the greater capacity to utilize the herbicides and among the compounds evaluated, atrazine was the most used as a source of energy. To conclude, some Bradyrhizobium strains were able both to denitrify and to use the atrazine herbicide. The results obtained in this study increase expectations of the use of rhizobia as inoculants, causing changes at the agricultural and environmental level and allowing an appropriate management of agricultural soil fertilization, efficiency in nitrogen fixation and a faster biodegradation of pesticides in soil.
Starting Page	1563
Ending Page	1570
Page Count	8
File Format	PDF
ISSN	15904261
Journal	Annals of Microbiology
Volume Number	63
Issue Number	4
e-ISSN	18692044
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-03-09
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Rhizobial populations Herbicides utilization Denitrification Soil Microbiology Microbial Genetics and Genomics Microbial Ecology Fungus Genetics Medical Microbiology Applied Microbiology
Content Type	Text
Resource Type	Article
Subject	Applied Microbiology and Biotechnology

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