| ID:
610658.0,
MPI für Evolutionsbiologie / Experimental Evolution Research Group |
| Mate choice among yeast gametes can purge deleterious mutations |
| Authors: | Tazzyman, S. J.; Seymour, R. M.; Ponmiankowski, A.; Greig, D. |
| Language: | English |
| Date of Publication (YYYY-MM-DD): | 2012 |
| Title of Journal: | Journal of Evolutionary Biology |
| Journal Abbrev.: | J. Evol. Biol. |
| Volume: | article in press |
| Review Status: | not specified |
| Audience: | Not Specified |
| Abstract / Description: | Meiosis in Saccharomyces yeast produces four haploid gametes that usually fuse
with each other, an extreme form of self-fertilization among the products of a
single meiosis known as automixis. The gametes signal to each other with sex
pheromone. Better-quality gametes produce stronger signals and are preferred
as mates. We suggest that the function of this signalling system is to enable
mate choice among the four gametes from a single meiosis and so to promote
the clearance of deleterious mutations. To support this claim, we construct a
mathematical model that shows that signalling during automixis (i) improves
the long-term fitness of a yeast colony and (ii) lowers its mutational load. We
also show that the benefit to signalling is greater with larger numbers of
segregating mutations |
| Free Keywords: | Saccharomyces; automixis; gamete choice; intratetrad mating;
mate choice; mate preference; sexual selection |
| External Publication Status: | published |
| Document Type: | Article |
| Communicated by: | Brigitte Lechner |
| Affiliations: | MPI für Evolutionsbiologie/AG Experimentelle Evolution
|
| External Affiliations: | CoMPLEX, University College London, London, UK; The Galton Laboratory, Department of Genetics, Environment and Evolution, University College London, London, UK; Department of Mathematics, University College London, London, UK
|
| Identifiers: | ISSN:1010-061X (print) [ID-No:1]
ISSN:1420-9101 (online) [ID-No:2]
DOI:10.1111/j.1420-9101.2012.02539.x [ID-No:3]
LOCALID:2923/S 39268 [Listen-Nummer/S-Nummer] |
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