Letter | Published:

Alkaloids as Self-inhibitors of Fungi

Naturevolume 214pages516517 (1967) | Download Citation



WE found that the washed conidia of Glomerella cingulata (Stoneman) Spaulding and Schrenk readily germinated in redistilled water, but only when present in low concentrations1. Reduced germination of spores as a result of crowding is known in several fungi as “self-inhibition”. We showed that diffusible inhibitors were present in the conidia; a basic fraction was more toxic to the conidia of G. cingulata than to the endospores of Bacillus subtilis by a Petri plate assay method2.

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    Lingappa, B. T., and Lingappa, Y., J. Gen. Microbiol., 41, 67 (1965).

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    Lingappa, B. T., and Lingappa, Y., J. Gen. Microbiol., 43, 91 (1966).

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    Cromwell, B. T., in Modern Methods of Plant Analysis, IV (edit. by Paech, K., and Tracey, M. V.), 367 (Springer-Verlag, Berlin, 1955).

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    Shriner, R. L., Fuson, R. C., and Curtin, D. Y., The Systematic Identification of Organic Compounds, fourth ed., 63 (John Wiley, New York, 1956).

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    Randerath, K., Thin-Layer Chromatography, 74 (Academic Press, 1964).

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    Lingappa, B. T., and Lingappa, Y., Bacteriol. Proc., 35 (1964).

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    Szent-Gyorgyi, A., Hegyeli, A., and MacLaughlin, J. A., Proc. U.S. Nat. Acad. Sci., 49, 878 (1963).

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  1. College of the Holy Cross, Worcester, Massachusetts

    • B. T. LINGAPPA


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