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  Asynchronous spore germination in isogenic natural isolates of Saccharomyces paradoxus

Stelkens, R. B., Miller, E. L., & Greig, D. (2016). Asynchronous spore germination in isogenic natural isolates of Saccharomyces paradoxus. FEMS Yeast Research, 16(3).

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-83CE-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-0879-B
Genre: Journal Article

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Stelkens et al. revision.pdf (Any fulltext), 196KB
 
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 Creators:
Stelkens, Rike B.1, Author              
Miller, Eric L.1, Author              
Greig, Duncan1, Author              
Affiliations:
1Max-Planck Research Group Experimental Evolution, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445640              

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Free keywords: Saccharomyces paradoxus; bet hedging; colony size; germination asynchrony
 Abstract: Spores from wild yeast isolates often show great variation in the size of colonies they produce, for largely unknown reasons. Here we measure the colonies produced from single spores from six different wild Saccharomyces paradoxus strains. We found remarkable variation in spore colony sizes, even among spores that were genetically identical. Different strains had different amounts of variation in spore colony sizes, and variation was not affected by the number of preceding meioses, or by spore maturation time. We used time-lapse photography to show that wild strains also have high variation in spore germination timing, providing a likely mechanism for the variation in spore colony sizes. When some spores from a laboratory strain make small colonies, or no colonies, it usually indicates a genetic or meiotic fault. Here, we demonstrate that in wild strains spore colony size variation is normal. We discuss and assess potential adaptive and non-adaptive explanations for this variation.

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Language(s): eng - English
 Dates: 2015-11-232016-02-102016-02-152016-03
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: BibTex Citekey: Stelkens2016
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Title: FEMS Yeast Research
  Other : FEMS Yeast Res.
Source Genre: Journal
 Creator(s):
Nielsen, Jens, Editor
Affiliations:
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 16 (3) Sequence Number: - Start / End Page: - Identifier: ISSN: 1567-1356
Other: 1567-1356
CoNE: /journals/resource/111000137403004