Skip to Main Content
The Genetics of Sexual Incompatibility in the Indian Paint Fungus, Echinodontium TinctoriumAuthor(s): A. Dan Wilson
Source: <i>Mycologia</i>, 82(3), 1990, pp. 332-341
Publication Series: Miscellaneous Publication
PDF: View PDF (250 KB)
DescriptionBasidiocarps of Echinodontium tinctorium were collected from three widely separated localities in Idaho and Arizona. Freezing basidiospore prints at -20 C for ten weeks stimulated germination. The role of low temperatures in breaking spore dormancy is discussed relative to environmental adaptation. Single-spore isolates of a single basidiocarp from each location were paired separately in all possible combinations. Four mating types were identified from each basidiocarp in Idaho. Four types of macroscopic interactions were observed in pairings between sympatric isolates. Basidiospores and cells of hyphae derived from basidiospores were monokaryotic (uninucleate), lacked clamp connections, and appeared haploid. Heterokaryotic hyphae derived from compatible matings were dikaryotic, exhibited clamp connections, and resembled generative contextual hyphae of basidiocarps. Complete intercompatibility between allopatric isolates demonstrated that the incompatibility factors were multiallelic. The fungus apparently does not fruit in culture, although mating results and cytological data indicate that it is heterothallic with a bifactorial (tetrapolar) mating system in which sexual incompatibility is controlled by multiple alleles at two loci on separate chromosomes.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationWilson, A. Dan. 1990. The Genetics of Sexual Incompatibility in the Indian Paint Fungus, Echinodontium Tinctorium. Mycologia, 82(3), 1990, pp. 332-341
KeywordsEchinodontium, incompatibility, spore germination, wood decay, heartrot, population genetics
- Cytology and Genetics of Sexual Incompatibility in Didymella rabiei
- Somatic Incompatibility in Diakaryotic-monokaryotic and Dikaryotic Pairings of Echinodontium tinctorium
- Use of flow cytometry, fluorescence microscopy, and PCR-based techniques to assess intraspecific and interspecific matings of Armillaria species
XML: View XML