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NUTRITION OF CHYTRIOMYCES AND ITS INFLUENCE ON MORPHOLOGY
Author(s) -
Hasija S. K.,
Miller C. E.
Publication year - 1971
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.1537-2197.1971.tb10049.x
Subject(s) - biology , maltose , cellobiose , raffinose , fructose , lactose , sucrose , botany , ammonium , arabinose , xylose , food science , galactose , nutrient , carbohydrate , melibiose , thiamine , biochemistry , hydrolysis , fermentation , chemistry , ecology , organic chemistry , cellulase
The nutrition and its influence on some morphological characteristics of one isolate of Chytriomyces aureus Karling and two isolates of C. hyalinus Karling, one with and one without resting bodies, was studied. All three isolates required exogenous thiamine for optimum growth. Glucose, fructose, mannose, maltose, cellobiose, and starch supported good or moderate amounts of growth of all the isolates. Galactose, arabinose, xylose, ribose, sucrose, lactose, and raffinose supported little or only trace amounts of growth of C. hyalinus , with resting bodies, but failed to produce any growth of C. aureus and C. hyalinus , without resting bodies. All isolates utilized ammonium [NH 4 NO 3 , (NH 4 ) 2 SO 4 , NH 4 Cl] as nitrogen sources but were unable to utilize nitrate (KNO 3 ) and nitrite (KNO 2 ). All isolates were able to grow at p H ranges of 5–8; the optimum p H range was 6.5. Both isolates of C. hyalinus were able to grow at a temperature of 10–30 C, whereas C. aureus did not grow below 15 C or above 25 C. Sporangial size was influenced by varying temperature levels, p H ranges, vitamins, carbohydrates, and nitrogen sources, while the morphology and sizes of zoospores, lipoid globules, apophyses, and rhizoids were little affected. The similarity of response exhibited by both species of Chytriomyces to various nutrients may suggest that these are closely related taxa.