INVESTIGADORES
VOJNOV Adrian Alberto
congresos y reuniones científicas
Título:
First report of Xanthomonas sacchari isolated from sugarcane with leaf scald disease in Tucumán
Autor/es:
MIELNICHUK, NATALIA; BIANCO, MARÍA I; PABLO M. YARYURA; ATILIO CASTAGNARO; VOJNOV, ADRIAN ALBERTO
Lugar:
Paraná, Entre Ríos
Reunión:
Congreso; SAIB; 2018
Resumen:
Xanthomonassacchari is a closely related bacterium to Xanthomonasalbilineans, the causal agent of sugarcane leaf scald disease. It is unknownif X. sacchari is able to infect sugarcane. Recently, two strains of X. sacchari (named Xs14 and Xs15) were isolated from sugarcane with leafscald disease. Our goal is to analyse key virulence factors and to assess pathogenicity of X. sacchari. First, exopolysaccharide (EPS) and biofilmcharacteristics were analysed in media with different carbon source (glucose: GLU; sucrose: SUC). EPS yield was determined as dry weight afterKCl/ETOH precipitation. Relative EPS-Xs14 production in GLU and SUC was 100% and 70% respectively. On the other hand, EPS-Xs15relative production was 38% in GLU and 34% in SUC. Low shear rate viscosity (LSRV) was calculated with a Brookfield viscometer. LSRV ofEPS-Xs14 and EPS-Xs15 obtained in GLU were significantly higher (P
