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Characterization of Cell Wall Degrading Enzymes of Thanatephorus Cucumeris

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Abstract

Thanatephorus cucumeris is a ubiquitous fungus responsible for many types of plant diseases worldwide. All isolates from infected Hevea brasiliensis trees secreted pectolytic enzymes; polygalacturonase (PG), pectin lyase (PL) and cellulolyticenzymes; β-glucosidase and cellobiase in culture. The extracts of the rubber tree leaf tissues, inoculated with T. cucumeris did not show any PG activity. However, PL activity was detected in tissue with the establishment of the infection. The levels ofβ-glucosidase, an inherent enzyme in Hevea spp. increased rapidly following infection. However, cellobiase was detected only with the initiation of infection. Molecular weights of PG in all isolates were similar and in the range of 53,000 to 58,000. PL alsofollowed the same pattern showing a molecular weight around 39,000.

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Authors and Affiliations

  1. Rubber Research Institute, Dartonfield, Agalawatta, Sri Lanka

    C.K. Jayasinghe, S.C.P. Wijayaratne & T.H.P.S. Fernando

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  1. C.K. Jayasinghe
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  2. S.C.P. Wijayaratne
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  3. T.H.P.S. Fernando
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Jayasinghe, C., Wijayaratne, S. & Fernando, T. Characterization of Cell Wall Degrading Enzymes of Thanatephorus Cucumeris . Mycopathologia 157, 73–79 (2004). https://doi.org/10.1023/B:MYCO.0000012210.64378.97

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  • DOI: https://doi.org/10.1023/B:MYCO.0000012210.64378.97

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