INVESTIGADORES
MORENO Maria virginia
artículos
Título:
Effects of glyphosate on soil fungal communities: a field study
Autor/es:
VAZQUEZ MB; MORENO MV; AMODEO MR; BIANCHINOTTI MV
Revista:
REVISTA ARGENTINA DE MICROBIOLOGíA
Editorial:
ASOCIACION ARGENTINA MICROBIOLOGIA
Referencias:
Lugar: Buenos Aires; Año: 2021 vol. 53 p. 349 - 358
ISSN:
0325-7541
Resumen:
The driving forces behind many soil processes are microorganisms and they are able to respond immediately to environmental changes. The soil microbial community impacts on many soil properties. More than one-third of the terrestrial ecosystems are covered by semiarid lands. However, a limited number of studies have been conducted to characterize soil fungal communities in semiarid grasslands, in particular those of agricultural fields. The aim of this study was to explore changes in the diversity and structure of soil fungal communities in semiarid grassland, after different doses of glyphosate were applied, under field conditions. Changes in soil fungal community were examined using different approaches including culturing, calcofluor white stain and denaturing gradient gel electrophoresis (DGGE). The different approaches complement each other and revealed different aspects of the effect of glyphosate on soil fungal communities. We demonstrate a negative effect of glyphosate on soil fungal biomass in high doses and early and transitory stimulatory effect on soil fungal biomass. We also found a negative effect of glyphosate on the species richness of cultivable fungi and changes in molecular structure of soil fungal communities after double doses or long-term glyphosate application. In summary our findings demonstrate an overall negative effect of glyphosate on soil fungal communities.Key words: Soil fungal biomass, Calcofluor white stain, PCR-DGGE, Herbicides