Homothallism in Sclerotinia minor

Ekins, M., Aitken, E. A. and Coulter, K. C. (2006) Homothallism in Sclerotinia minor. Mycological Research, 110 10: 1193-1199. doi:10.1016/j.mycres.2006.07.014

Author Ekins, M.
Aitken, E. A.
Coulter, K. C.
Title Homothallism in Sclerotinia minor
Journal name Mycological Research   Check publisher's open access policy
ISSN 0953-7562
Publication date 2006
Sub-type Article (original research)
DOI 10.1016/j.mycres.2006.07.014
Volume 110
Issue 10
Start page 1193
End page 1199
Total pages 7
Place of publication Oxford
Publisher Elsevier Science Ltd.
Collection year 2006
Language eng
Subject C1
270403 Plant Pathology
620105 Oilseeds
Abstract Sclerotinia species are sexually reproducing ascomycetes. In the past S. minor and S. sclerotiorum, have been assumed to be homothallic because of the self-fertility of colonies derived from single ascospores. S. trifoliorum has previously been shown to be bipolar heterothallic due to the presence of four self-fertile and four self-sterile ascospores within a single ascus [Uhm, J.Y., Fujii, H., 1983a. Ascospore dimorphism in Sclerotinia trifoliorum and cultural characters of strains from different-sized spores. Phytopathology 73: 565-569]. However, isolates of S. minor and S. sclerotiorum were proven to be homothallic ascomycetes, by self-fertility of all eight ascospores within an ascus. Apothecia were raised from all eight ascospores of a single tetrad from four isolates of S. minor and from an isolate of S. sclerotiorum, indicating that inbreeding may be the predominant breeding mechanism of S. minor. Ascospores from asci of S. minor and S. sclerotiorum were predominantly monomorphic, but rare examples of ascospore dimorphism similar to S. trifoliorum were found. (c) 2006 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
Keyword Apothecia
Carpogenic Germination
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 09:44:17 EST