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Biol Res ; 42(3): 297-304, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19915738

RESUMO

Gallic acid was artificially added to the media to grow Fusarium oxysporum f.sp.niveum to investigate its effect on the pathogenic fungus. Results indicate that gallic acid inhibited the growth of F. oxysporum f.sp.niveum. The colony diameter, the conidia germinating rate and the conidia yield were reduced by 5.7-22.9%%, 35.8-55.6% and 38.9-62.2% respectively. However, the virulence factors by the fungus were stimulated. The activity of pectinase, proteinase and cellulase increased by 12.3-627.8%, 11.8-41.2% and 0.5-325.0% respectively, while the activity of amylase increased slightly. The results suggest that gallic acid repressed growth but facilitated the relative pathogenicity of invading pathogens.


Assuntos
Meios de Cultura/farmacologia , Fusarium/efeitos dos fármacos , Ácido Gálico/farmacologia , Esporos Fúngicos/efeitos dos fármacos , Contagem de Colônia Microbiana , Meios de Cultura/química , Fusarium/crescimento & desenvolvimento , Fusarium/patogenicidade , Esporos Fúngicos/crescimento & desenvolvimento , Esporos Fúngicos/patogenicidade , Fatores de Virulência
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