- International Journal of Systematic and Evolutionary Microbiology
- Volume 28, Issue 2
f Pichia heedii, a New Species of Yeast Indigenous to Necrotic Cacti in the North American Sonoran Desert
- Authors: H. J. PHAFF, W. T. STARMER†, MARY MIRANDA, M. W. MILLER
- Address reprint requests to: H. J. Phaff, Department of Food Science and Technology, University of California, Davis, CA 95616.
- First Published Online: 01 April 1978, International Journal of Systematic and Evolutionary Microbiology 28: 326-331, doi: 10.1099/00207713-28-2-326
- Subject: Original Papers Relating To The Systematics Of Yeasts
- Issue Published:
A novel member of the yeast genus Pichia was recovered 67 times during the period 1971 to 1976. We have named this new species Pichia heedii in honor of William B. Heed. Most strains were isolated from the soft-rot of Lophocereus schottii and from Drosophila pachea, which utilizes L. schottii as a host plant. All strains were found in the Sonoran Desert. The species has four-spored asci and is heterothallic. P. heedii has metabolic capabilities similar to those of P. membranaefaciens, but the base composition of its nuclear deoxyribonucleic acid is 10 to 12 mol% lower than that of P. membranaefaciens. P. heedii may be differentiated from other cactus-specific Pichia species by its ability to assimilate D-xylose and from P. membranaefaciens by its cactus habitat, small cell size, and relatively high maximum temperature of growth. The type strain of P. heedii is UCD-FST 76-356 (= ATCC 34936 = CBS 6930).
Present address: Department of Biology, Syracuse University, Syracuse, NY 13210.
Copyright © 1978 International Association of Microbiological Societies | Published by the Microbiology Society
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