PERSONAL DE APOYO
DELFINI claudio daniel
congresos y reuniones científicas
Título:
ANTIFUNGAL ACTIVITY OF BACTERIA ISOLATED FROM BAT GUANO ON PATHOGENIC FUNGI OF STRAWBERRIES
Autor/es:
DELFINI CD, VILLEGAS LB, BAIGORI MD.
Lugar:
Puerto Madryn
Reunión:
Congreso; XLVI REUNION ANUAL SOCIEDAD ARGENTINA DE INVESTIGACION EN BIOQUIMICA Y BIOLOGIA MOLECULAR; 2010
Institución organizadora:
SAIB
Resumen:
ANTIFUNGAL ACTIVITY OF BACTERIA ISOLATED
FROM BAT GUANO ON PATHOGENIC FUNGI OF
STRAWBERRIES
Delfini CD, Villegas L, Baigori M
PROIMI -CONICET. Tu c umá n , Arg e n t i n a . E-ma i l :
cdelfini47@hotmail.com
Tucumán is the principal producer of strawberry of Argentine. The
major phytosanitary disadvantages of this crop are the diseases
produced by soil fungi. One of the most serious and common is the
anthracnose caused by fungal of genus Colletotrichum. They
produce the major losses both in the fruit and plant production.
In previous works 6 chitinolitc bacteria isolated from bat guano
(Taradita brasilensis) were characterized as belonging to Bacillus
and Streptomyces genus.
The aim of this work is to study the antifungal activity of these
chitinolitc bacteria on fungus of Colletoctichum genus in vitro.
The 6 bacteria were incubated in 3 different media: SPI- colloidal
chitin, SPI-pupa and Standar nutrient during 72h, 200 rpm and at 20,
25 and 28 ºC. Supernatants of these cultures were used in inhibition
tests on Colletoctichum acutatum and C.fragariae grown on potato
dextrose agar.
Only the bacteria of the genus Bacilllus showed to possess
antifungical activity. Supernatants of B.atrophaeus PA 14 had the
major capacity of inhibition of both fungi. The results suggest that
this bacterium produce extracellular antifungal metabolite.
B.atrophaeus PA 14 is a potential antifungical biocontrol agent for
anthracnose in strawberries. This will allow the decrease of the use
of chemical products and will favor the sustainable production.
This work was supported by grant PIP-CONICET 297.