INVESTIGADORES
VARGAS GIL Silvina
artículos
Título:
Quantitative isolation of biocontrol agents Trichoderma spp., Gliocladium spp. and Actinomycetes from soil with culture media.
Autor/es:
SILVINA VARGAS GIL; SILVINA PASTOR; GUILLERMO MARCH
Revista:
MICROBIOLOGICAL RESEARCH
Editorial:
ELSEVIER GMBH
Referencias:
Año: 2009 vol. 164 p. 196 - 205
ISSN:
0944-5013
Resumen:
Soil biodiversity plays a key role in the sustainability of agriculture systems andindicates the level of health of soil, especially when considering the richness ofmicroorganisms that are involved in biological control of soilborne diseases. Culturalpractices may producec hanges in soil microflora, which can be quantified throughthe isolation of target microorganisms. Rhizosphere soil samples were taken from anassay with different crop rotations and tillage systems, and populations ofTrichoderma spp., Gliocladium spp. and actinomycetes were quantified in order toselect the general and selective culture media that better reflect the changes ofthese microbia lpopulations in soil.The most efficien tmedium for the isolation ofTrichoderma spp. and Gliocladium spp. was potato dextrose agar modified b ytheaddition of chloramphenicol, streptomycin and rose bengal, and for actinomyceteswas Kuster medium, with cycloheximide and sodium propionate.
