Physiology of spore germination in cephalosporium acremonium
- 50 Downloads
Conidia ofC. acremonium require an exogenous supply of carbon, nitrogen, magnesium, and phosphate for swelling and germ tube formation. Germination is stimulated by supplementing the medium with sulfate. Maximum frequency of germination occurs at a temperature of 27° to 32°C and a pH of 8.0. Conidia swell at pH 4.0 to 5.5 but do not form germ tubes. Conidia allowed to swell at pH 5.5 initiate germ tube formation immediately when the pH is adjusted to 7.5. Under optimal conditions, over 95 percent of the spore population formed germ tubes by 13 hours.
KeywordsNitrogen Phosphate Sulfate Magnesium Initiate Germ
Unable to display preview. Download preview PDF.
- 2.Badger, M. A. (1965) Influence of relative humidity on fungi causing crown rot of boxed bananas. Phytopath. 55: 688–692.Google Scholar
- 4.Gottlieb, D. & R. K. Tripathi (1968) The physiology of swelling phase of spore germination in Penicillium atrovenetum. Mycologia. 60: 571–590.Google Scholar
- 6.Mandels, G. R. & R. T. Darby (1953) A rapid cell volume assay for fungi toxicity using fungus spores. J. Bacter. 65: 16–26.Google Scholar
- 7.Marchant, R. & M. F. White (1967) The carbon metabolism and swelling of Fusarium culmorum conidia. J. Gen. Microbiol. 48: 65–77.Google Scholar
- 8.Martin, J. F. & G. Nicolas (1970) Physiology of spore germination in Penicillium notatum and Trichoderma lignorum. Trans. Br. Mycol. Soc. 55: 141–148.Google Scholar
- 9.Mozumder, B. K. G., N. E. Caroselli & L. S. Albert (1970) Influence of water activity, temperature and their interaction on germination of Verticillium albo-atrum conidia. Plant Physiol. 46: 347–349.Google Scholar