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Mycopathologia. 1981 Nov 11;76(2):115-7.

Auxotrophic markers and the cytogenetics of Filobasidiella neoformans.

Abstract

In the sexual phase of Cryptococcus neoformans four post-meiotic nuclei give rise to the nuclei of four long chains of basidiospores. If there is fixed relationship between one post-meiotic nucleus and one chain the result should be genetic homogeneity within single chains; random composition of chains would represent the opposite case. We tested for homogeneity in single chains from crosses of niacin-auxotrophs to the wild type by dissecting single chains of basidiospores from mature fruiting bodies. Out of 14 chains, 11 were homogeneous; the probability of obtaining this result by random processes was less than 0.01. These results suggest that mitotic products of a particular post-meiotic nucleus may be channeled into a particular basidiospore chain.

PMID:
7033793
DOI:
10.1007/bf00443758
[Indexed for MEDLINE]

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