Abstract
Twelve organic compounds were studied in respect to their effect on the activity and production of protopectinase (PP) and polygalacturonase (PG) enzymes ofAlternaria tenuis. Onlyα-naphthol, oxidised pyrogallol, tannic acid and extract of heart wood ofAcacia catechu (kattha) were found to be effective inhibitors for the activity of PP and PG enzymes. Apart from these chemicalsp-benzoquinone, hydroquinone and 1:2:5:8-tetrahydroxyanthraquinone were also found to reduce the production of enzymes in the culture medium. No definite relation between the inhibitory effect of the chemicals with either the growth of the fungus or germination of the spores was recorded.
It was observed that the chemicals required some reaction time to cause effective inhibition of the enzymes.
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Communicated by Prof. T. S. Sadasivan,f.a.sc.
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Prasad, V. Studies in pectic enzymes of parasitic fungi. Proc. Indian Acad. Sci. 65, 119–125 (1967). https://doi.org/10.1007/BF03052205
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DOI: https://doi.org/10.1007/BF03052205