Extracellular enzymes of Fusarium graminearum isolates

Brazilian Archives of Biology and Technology

Gisele Eleonora Kikot¹  Roque Alberto Hours¹  Teresa María Alconada¹ 

[1] ,CINDEFI

关键词: Extracellular enzymes;    Fusarium graminearum;    pectinases;    cellulases;    hemicellulases;   

DOI  :  10.1590/S1516-89132010000400005

来源: SciELO

【 摘 要 】

Fusarium graminearum isolates from three different agroecological regions in Argentina were examined according to the production of different extracellular enzyme activities of potential biotechnological interest: pectinases (PGase: polygalacturonase and PMGase: polymethylgalacturonase), cellulase (CMCase: carboxymethylcellulase) and hemicellulase (xylanase). The isolates were grown in minimum salt medium supplemented with 0.25% glucose, 0.125% citric pectin and 0.125% oat bran as carbon sources and/or enzyme inducers. PGase activity was detected early (after two days of incubation) in all the cultures; it was found to be the highest for all the isolates. PMGase was high only for those isolates of the II region. CMCase and endoxylanase activities were particularly found at late stages (after four and seven days of incubation, respectively) and the maximum values were lower than pectinase activities.

【 授权许可】

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