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Physiological Characteristics of Mycosphaerella ascophylli , a Fungal Endophyte of the Marine Brown Alga Ascophyllum nodosum
Author(s) -
FRIES NILS
Publication year - 1979
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1979.tb01674.x
Subject(s) - ascophyllum , thallus , botany , biology , endophyte , axenic , xylose , chlorophyta , brown algae , algae , fermentation , bacteria , food science , genetics
Mycosphaerella ascophylli Cotton, a fungal endosymbiont in the thallus of the marine brown alga, Ascophyllum nodosum (L.) Le Jol., was brought into axenic culture. Most of its nutritional requirements proved to be similar to those characteristic of marine saprophytic fungi: growth optimum at pH 7 to 8, good growth only with a high concentration of NaCl, ability to utilize nitrate as a nitrogen source and glucose, galactose and mannose as carbon sources. The fungus was more specifically characterized by a low temperature optimum (20°C, or lower), a requirement for both thiamin and biotin, and inability to metabolize xylose and fructose.