and coexist in a natural woodland site in North America and display different levels of reproductive isolation from European conspecifics

Sniegowski, Paul D.; Dombrowski, Peter G; Fingerman, Ethan G.

doi:10.1016/s1567-1356(01)00043-5

Cited by 181 publications

(388 citation statements)

References 20 publications

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“…Two strains from southern Quebec clustered with four strains from Pennsylvania previously associated with the non-indigenous West Eurasian genetic group (group A; figure 1a) [29]. Fifty-seven strains from across our sampling area (except Saskatchewan and Eastern Quebec) clustered with 12 isolates belonging to the main previously described indigenous American S. paradoxus group (group B; figure 1a) [23,29,33,34]. The 32 remaining strains clustered in the third group, which is genetically distinct from all other S. paradoxus strains (group C; figure 1a).…”

Section: Results (A) Fitness Estimates At Different Temperatures and mentioning

confidence: 58%

Local climatic adaptation in a widespread microorganism

et al. 2014

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Exploring the ability of organisms to locally adapt is critical for determining the outcome of rapid climate changes, yet few studies have addressed this question in microorganisms. We investigated the role of a heterogeneous climate on adaptation of North American populations of the wild yeast Saccharomyces paradoxus. We found abundant among-strain variation for fitness components across a range of temperatures, but this variation was only partially explained by climatic variation in the distribution area. Most of fitness variation was explained by the divergence of genetically distinct groups, distributed along a north-south cline, suggesting that these groups have adapted to distinct climatic conditions. Within-group fitness components were correlated with climatic conditions, illustrating that even ubiquitous microorganisms locally adapt and harbour standing genetic variation for climate-related traits. Our results suggest that global climatic changes could lead to adaptation to new conditions within groups, or changes in their geographical distributions.

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Section: Results (A) Fitness Estimates At Different Temperatures and mentioning

confidence: 58%

Local climatic adaptation in a widespread microorganism

et al. 2014

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“…Although the geographic distributions of these yeast species are not as well studied as those of Neurospora, an examination of the best-known member, S. cerevisiae, and its closest relative, S. paradoxus, challenges the concept of global fungal species. Mating tests between S. cerevisiae and S. paradoxus demonstrate reproductive isolation (Sniegowski et al 2002). Saccharomyces cerevisiae has been found associated with agriculture, in particular with grapes and wine production, and both S. cerevisiae and S. paradoxus are found associated with oak trees in natural environments (Sniegowski et al 2002;Johnson et al 2004).…”

Section: The Fungi a Kingdom Of Microbial Eukaryotesmentioning

confidence: 99%

“…Mating tests between S. cerevisiae and S. paradoxus demonstrate reproductive isolation (Sniegowski et al 2002). Saccharomyces cerevisiae has been found associated with agriculture, in particular with grapes and wine production, and both S. cerevisiae and S. paradoxus are found associated with oak trees in natural environments (Sniegowski et al 2002;Johnson et al 2004). Aa et al (2006) recently applied PSR to a collection of S. cerevisiae individuals obtained from laboratories, agriculture, wineries and oaks.…”

Section: The Fungi a Kingdom Of Microbial Eukaryotesmentioning

confidence: 99%

“…The laboratory and winery or vineyard isolates were from Italy and California, the oak isolates were from Pennsylvania. The Pennsylvania S. cerevisiae isolates had been shown by BSR to be conspecific with S. cerevisiae individuals from Europe (Sniegowski et al 2002). Analysis of DNA sequence from four loci (6600 nucleotides) from 27 individuals showed that the Pennsylvania oak individuals were genetically isolated from the California and the Italian isolates, whereas the latter formed three clades, two of which contained isolates from both wineproducing regions (figure 2).…”

Section: The Fungi a Kingdom Of Microbial Eukaryotesmentioning

confidence: 99%

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Eukaryotic microbes, species recognition and the geographic limits of species: examples from the kingdom Fungi

Taylor

Turner

Townsend

et al. 2006

Phil. Trans. R. Soc. B

304

249

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The claim that eukaryotic micro-organisms have global geographic ranges, constituting a significant departure from the situation with macro-organisms, has been supported by studies of morphological species from protistan kingdoms. Here, we examine this claim by reviewing examples from another kingdom of eukaryotic microbes, the Fungi. We show that inferred geographic range of a fungal species depends upon the method of species recognition. While some fungal species defined by morphology show global geographic ranges, when fungal species are defined by phylogenetic species recognition they are typically shown to harbour several to many endemic species. We advance two non-exclusive reasons to explain the perceived difference between the size of geographic ranges of microscopic and macroscopic eukaryotic species when morphological methods of species recognition are used. These reasons are that microbial organisms generally have fewer morphological characters, and that the rate of morphological change will be slower for organisms with less elaborate development and fewer cells. Both of these reasons result in fewer discriminatory morphological differences between recently diverged lineages. The rate of genetic change, moreover, is similar for both large and small organisms, which helps to explain why phylogenetic species of large and small organisms show a more similar distribution of geographic ranges. As a consequence of the different rates in fungi of genetic and morphological changes, genetic isolation precedes a recognizable morphological change. The final step in speciation, reproductive isolation, also follows genetic isolation and may precede morphological change.

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“…The budding yeast S. cerevisiae is naturally found in soil or the bark of trees [15] but has probably adopted new hosts such as grapes or rice as a result of domestication and its use in the production of wine and sake [16]. Nearly all studies of budding yeast are limited to laboratory strains that have lost morphogenetic features important in the natural environment.…”

Section: Fungal Morphogenesis -An Overviewmentioning

confidence: 99%

Yeast and fungal morphogenesis from an evolutionary perspective

Wedlich‐Söldner

2008

Seminars in Cell & Developmental Biology

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Cellular morphogenesis is a complex process and molecular studies in the last few decades have amassed a large amount of information that is difficult to grasp in any completeness. Fungal systems, in particular the budding and fission yeasts, have been important players in unravelling the basic structural and regulatory elements involved in a wide array of cellular processes. In this article, we address the design principles underlying the various processes of yeast and fungal morphogenesis. We attempt to explain the apparent molecular complexity from the perspective of the evolutionary theory of "facilitated variation". Following a summary of some of the most studied morphogenetic phenomena, we discuss, using recent examples, the underlying core processes and their associated "weak" regulatory linkages that bring about variation in morphogenetic phenotypes.

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and coexist in a natural woodland site in North America and display different levels of reproductive isolation from European conspecifics

Cited by 181 publications

References 20 publications

Local climatic adaptation in a widespread microorganism

Local climatic adaptation in a widespread microorganism

Eukaryotic microbes, species recognition and the geographic limits of species: examples from the kingdom Fungi

Yeast and fungal morphogenesis from an evolutionary perspective

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