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GROWTH AND SEXUAL REPRODUCTION OF APHANOMYCES EUTEICHES AS AFFECTED BY THE OXIDATION STATE OF SULFUR
Author(s) -
Davey C. B.,
Papavizas G. C.
Publication year - 1962
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1962.tb14957.x
Subject(s) - sulfur , biology , reproduction , oxidation state , sexual reproduction , food science , botany , ecology , biochemistry , organic chemistry , chemistry , catalysis
D avey , C. B., and G. C. P apavizas . (Crops Res. Div., ARS, USDA, Beltsville, Md.) Growth and sexual reproduction of Aphanomyces euteiches as affected by the oxidation state of sulfur. Amer. Jour. Bot. 49(4): 400–404. Illus. 1962.—Growth and sexual reproduction of Aphanomyces euteiches Drechs., as affected by the oxidation state of sulfur (S), were studied in synthetic media containing d ‐glucose, dl ‐glutamic acid, mineral salts phosphate buffer, and various S sources. Organic and inorganic S sources representing some oxidation numbers (valences) were added to the media at concentrations to provide a range from 0 to 128 mg S/liter. The initial reaction in both liquid and solid media was adjusted to pH 6.2. Liquid cultures were maintained at that pH by periodic adjustment. Oxidized S with oxidation number +6 or +4 was not utilized by the fungus, whereas good growth was obtained in the presence of S with oxidation numbers of 0 or ‐2. Although differences existed among isolates as to relative rates of utilization of the various S sources, there was complete conformity among isolates as to which sources were utilized for growth. Some isolates did not utilize all available S sources for sexual reproduction.