Unstable petite and grande variants of Candida shehatae |
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Authors: | Thomas W. Jeffries |
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Affiliation: | (1) Forest Products Laboratory, USDA, Forest Service, P.O. Box 5130, 53705 Madison, Wi, USA |
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Abstract: | Summary Two strains of Candida shehatae (ATCC 22984 and CSIR Y492) exhibit marked variability in colony size (petite, grande) and respiratory activity (tetrazolium reaction) when grown on glucose, xylose, and--especially--xylitol agar. The transitions occur in both directions at high frequency. Strains showing a negative or weak tetrazolium reaction on xylitol ferment xylose better than those showing a strong tetrazolium reaction. The type strain (ATCC 34887) shows stable colonial morphology with moderate respiratory and fermentative activities. The objective of this report is to demonstrate these variations. |
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