University of California

The enzymes of Pythiacystis citrophthora Sm. and Sm.


L. Joseph Klotz

Author Affiliations

L. Joseph Klotz was Research Associate in Plant Pathology and National Research Fellow in the Biological Sciences.

Publication Information

Hilgardia 3(2):27-40. DOI:10.3733/hilg.v03n02p027. October 1927.

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I. Introduction

This paper reports a study of the enzymes produced by the fungus, Pythiaeystis citrophthora, when grown in pure culture. For references and short general reviews of the several works on the enzymes of the various groups of fungi, see Waksman,(25) Waksman and Davison,(26) Dox,(6) Zeller(27) and Cooley.(5) Considering forms morphologically rather near to Pythiacystis, Emoto(7) found in species of Saprolegnia that amylase, inulase, raffinase, invertase, lactase, maltase, emulsin, salicase, glycolase, proteolytic enzymes (acid, neutral, alkaline), peroxidase and catalase were present as intra-cellular enzymes, and pectinase, cellulase, lipase, urease, tyrosinase and oxidase were absent. In the Achlya, amylase, inulase, cellulase, invertase, lactase, maltase, emulsin, salicase, proteolytic enzymes (acid, neutral, alkaline) peroxidase, and catalase were present and pectinase, glycolase, lipase, urease, tyrosinase and oxidase absent.

Among the enzymes reported by various workers as being produced by representatives of the Mucorales are cytase, cellobiase, pectinase, inulase, diastase, maltase, invertase, lactase, zymase, rennet and lipase. This briefly sums up the known work on the enzymes produced by the phycomycetous fungi.

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Klotz L. 1927. The enzymes of Pythiacystis citrophthora Sm. and Sm.. Hilgardia 3(2):27-40. DOI:10.3733/hilg.v03n02p027
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