Biology:Saccharomyces paradoxus
| Saccharomyces paradoxus | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Saccharomycetes |
| Order: | Saccharomycetales |
| Family: | Saccharomycetaceae |
| Genus: | Saccharomyces |
| Species: | S. paradoxus
|
| Binomial name | |
| Saccharomyces paradoxus Bachinskaya, A.A., 1914
| |
Saccharomyces paradoxus is a wild yeast and the closest known species to the baker's yeast Saccharomyces cerevisiae. It is used in population genomics and phylogenetic studies to compare its wild characteristics to laboratory yeasts.[1]
Ecology
Saccharomyces paradoxus is mostly isolated from deciduous trees (oak, maple, birch), and in some rare occasions on insects and fruits.[2][3][4][5] It is often found in sympatry with other Saccharomyces species.[6][7][8] Like Saccharomyces cerevisiae, it has a worldwide distribution and it is mesophilic, which limits its natural distribution to low latitudes. However, Saccharomyces paradoxus typically grows at lower temperatures than Saccharomyces cerevisiae, resulting in a slight shift in its distribution toward cooler regions, like British islands and Eastern Canada.[2][8][9]
Biogeography
Unlike most other Saccharomyces species, there is no evidence that Saccharomyces paradoxus has been domesticated by humans.[3][11] Accordingly, its biogeography is mostly marked by natural processes like limited migration,[3] glacial refugia[12] and adaptation to climate.[10] At least four genetically and phenotypically distinct populations of Saccharomyces paradoxus have been identified, corresponding to main geographical divisions: Europe (including West Siberia), Far East Asia (Japan, Eastern Siberia), North America (North American East and West coasts, Great Lakes region) and North-East America (Gaspé Peninsula, Saint Lawrence Valley and Appalaches), respectively.[3][9][10][11] Representative strains of these populations exhibit partial post-zygotic isolation.[12][13] A fifth population is represented by a singleton isolate from Hawaii.[3][11] Some strains from the European population are found in North America and New Zealand and likely result from recent colonization events.[14][15] Two isolates from South America, described as Saccharomyces cariocanus,[16] are genetically indistinguishable but exhibit post-zygotic isolation when crossed to strains from the American population, due to chromosomal translocations.[13]
Reproduction
Saccharomyces paradoxus is naturally homothallic, and is mostly found as diploid in the environment. Reproduction is mostly clonal and 99% of sexual reproduction occurs between spores from the same ascus.[17] This purges recessive deleterious mutations that accumulated during clonal expansion, in a process known as "genome renewal".[18][19] Post-zygotic isolation between strains of Saccharomyces paradoxus is commonly observed and could be either due to genetic divergence between populations or to chromosomal changes within populations.[12][13]
Like in other Saccharomyces species, heterothallism can be restored using standard genetic tools, to obtain stable haploid strains for experimental purposes.
References
- ↑ Dunham, MJ; Louis, ED (2011). "Yeast evolution and ecology meet genomics". EMBO Reports 12 (1): 8–10. doi:10.1038/embor.2010.204. PMID 21151040.
- ↑ 2.0 2.1 Charron, G; Leducq, J-B; Bertin, C (2014). "Exploring the northern limit of the distribution of Saccharomyces cerevisiae and Saccharomyces paradoxus in North America". FEMS Yeast Research 14 (2): 281–8. doi:10.1111/1567-1364.12100. PMID 24119009.
- ↑ 3.0 3.1 3.2 3.3 3.4 Hyma, KE; Jay, JC (2013). "Mixing of vineyard and oak-tree ecotypes of Saccharomyces cerevisiae in North American vineyards". Molecular Ecology 22 (11): 2917–30. doi:10.1111/mec.12155. PMID 23286354.
- ↑ Maganti, H; Bartfai, D; Xu, J (2012). "Ecological structuring of yeasts associated with trees around Hamilton, Ontario, Canada". FEMS Yeast Research 12 (1): 9–19. doi:10.1111/j.1567-1364.2011.00756.x. PMID 22029478.
- ↑ Sniegowski, PD; Dombrowski, PG; Fingerman, E (2002). "Saccharomyces cerevisiae and Saccharomyces paradoxus coexist in a natural woodland site in North America and display different levels of reproductive isolation from European conspecifics". FEMS Yeast Research 1 (4): 299–306. doi:10.1111/j.1567-1364.2002.tb00048.x. PMID 12702333.
- ↑ Naumov, GI; Naumova, ES; Sniegowski, PD (1998). "Saccharomyces paradoxus and Saccharomyces cerevisiae are associated with exudates of North American oaks". Canadian Journal of Microbiology 44 (11): 1045–50. doi:10.1139/w98-104. PMID 10029999.
- ↑ Sampaio, JP; Goncalves, P (2008). "Natural populations of Saccharomyces kudriavzevii in Portugal are associated with oak bark and are sympatric with S. cerevisiae and S. paradoxus". Applied and Environmental Microbiology 74 (7): 2144–52. doi:10.1128/AEM.02396-07. PMID 18281431. PMC 2292605. Bibcode: 2008ApEnM..74.2144S. http://run.unl.pt/bitstream/10362/3248/1/Sampaio_2008.pdf.
- ↑ 8.0 8.1 Sweeney, JY; Kuehne, HA; Sniegowski, PD (2004). "Sympatric natural Saccharomyces cerevisiae and S. paradoxus populations have different thermal growth profiles". FEMS Yeast Research 4 (4–5): 521–5. doi:10.1016/s1567-1356(03)00171-5. PMID 14734033.
- ↑ 9.0 9.1 Johnson, LJ; Koufopanou, V; Goddard, MR (2004). "Population genetics of the wild yeast Saccharomyces paradoxus". Genetics 166 (1): 43–52. doi:10.1534/genetics.166.1.43. PMID 15020405.
- ↑ 10.0 10.1 10.2 Leducq, J-B; Charron, G; Samani, P (2014). "Local climatic adaptation in a widespread microorganism". Proceedings of the Royal Society B: Biological Sciences 281 (1777): 20132472. doi:10.1098/rspb.2013.2472. PMID 24403328.
- ↑ 11.0 11.1 11.2 Liti, G; Carter, DM; Moses, AM (2009). "Population genomics of domestic and wild yeasts". Nature 458 (7236): 337–41. doi:10.1038/nature07743. PMID 19212322. Bibcode: 2009Natur.458..337L.
- ↑ 12.0 12.1 12.2 Charron, G; Leducq, J-B; Landry, CR (2014). "Chromosomal variation segregates within incipient species and correlates with reproductive isolation". Molecular Ecology 23 (17): 4362–4372. doi:10.1111/mec.12864. PMID 25039979.
- ↑ 13.0 13.1 13.2 Liti, G; Barton, DB; Louis, EJ (2006). "Sequence diversity, reproductive isolation and species concepts in Saccharomyces". Genetics 174 (2): 839–850. doi:10.1534/genetics.106.062166. PMID 16951060.
- ↑ Kuehne, HA; Murphy, HA; Francis, CA (2007). "Allopatric divergence, secondary contact, and genetic isolation in wild yeast populations". Current Biology 17 (5): 407–11. doi:10.1016/j.cub.2006.12.047. PMID 17306538.
- ↑ Zhang, HA; Skelton, A; Gardner, RC (2010). "Saccharomyces paradoxus and Saccharomyces cerevisiae reside on oak trees in New Zealand: evidence for migration from Europe and interspecies hybrids". FEMS Yeast Research 10 (7): 941–7. doi:10.1111/j.1567-1364.2010.00681.x. PMID 20868381.
- ↑ Naumov, GI; James, SA; Naumova, ES (2000). "Three new species in the Saccharomyces sensu stricto complex: Saccharomyces cariocanus, Saccharomyces kudriavzevii and Saccharomyces mikatae". International Journal of Systematic and Evolutionary Microbiology 50 (5): 1931–42. doi:10.1099/00207713-50-5-1931. PMID 11034507.
- ↑ Tsai, IJ; Bensasson, D; Burt, A (2008). "Population genomics of the wild yeast Saccharomyces paradoxus: Quantifying the life cycle". Proceedings of the National Academy of Sciences of the United States of America 105 (12): 4957–62. doi:10.1073/pnas.0707314105. PMID 18344325. Bibcode: 2008PNAS..105.4957T.
- ↑ Mortimer, Robert K.; Romano, Patrizia; Suzzi, Giovanna; Polsinelli, Mario (December 1994). "Genome renewal: A new phenomenon revealed from a genetic study of 43 strains ofSaccharomyces cerevisiae derived from natural fermentation of grape musts". Yeast 10 (12): 1543–1552. doi:10.1002/yea.320101203. PMID 7725789.
- ↑ Masel, Joanna; Lyttle, David N. (December 2011). "The consequences of rare sexual reproduction by means of selfing in an otherwise clonally reproducing species". Theoretical Population Biology 80 (4): 317–322. doi:10.1016/j.tpb.2011.08.004. PMID 21888925.
Wikidata ☰ Q7396603 entry
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