Inter-strain cross-fertility tests on cultures from Israel and America in the homothallic fungus, Sordaria fimicola

Lamb, Brandy; Kozlakidis, Zisis; Saleem, Muhammad

doi:10.4148/1941-4765.1206

Cited by 1 publication

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“…fimicola. Remarkably, we found similar hints of incipient sympatric speciation in the soil fungus S. fimicola (53). Fertility diminished slightly for interslope strains compared with intraslope crosses.…”

Section: Nfs †supporting

confidence: 64%

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Evolution of genome–phenome diversity under environmental stress

Nevo

2001

Proc. Natl. Acad. Sci. U.S.A.

410

324

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The genomic era revolutionized evolutionary biology. The enigma of genotypic-phenotypic diversity and biodiversity evolution of genes, genomes, phenomes, and biomes, reviewed here, was central in the research program of the Institute of Evolution, University of Haifa, since 1975. We explored the following questions. (i) How much of the genomic and phenomic diversity in nature is adaptive and processed by natural selection? (ii) What is the origin and evolution of adaptation and speciation processes under spatiotemporal variables and stressful macrogeographic and microgeographic environments? We advanced ecological genetics into ecological genomics and analyzed globally ecological, demographic, and life history variables in 1,200 diverse species across life, thousands of populations, and tens of thousands of individuals tested mostly for allozyme and partly for DNA diversity. Likewise, we tested thermal, chemical, climatic, and biotic stresses in several model organisms. Recently, we introduced genetic maps and quantitative trait loci to elucidate the genetic basis of adaptation and speciation. The genome-phenome holistic model was deciphered by the global regressive, progressive, and convergent evolution of subterranean mammals. Our results indicate abundant genotypic and phenotypic diversity in nature. The organization and evolution of molecular and organismal diversity in nature at global, regional, and local scales are nonrandom and structured; display regularities across life; and are positively correlated with, and partly predictable by, abiotic and biotic environmental heterogeneity and stress. Biodiversity evolution, even in small isolated populations, is primarily driven by natural selection, including diversifying, balancing, cyclical, and purifying selective regimes, interacting with, but ultimately overriding, the effects of mutation, migration, and stochasticity. Haifa. This program involves biodiversity evolution, from bacteria to mammals, of genes, genomes, phenomes, populations, species, ecosystems, and biota as well as their intimate reciprocal interaction with spatiotemporal variables and the stressful physical and biotic environments resulting in adaptation and speciation. Ecological Genomics: Extension of Ecological GeneticsOur model organisms represent diverse taxa across life, from bacteria to mammals, in an attempt to unravel regularity, convergence, and divergence of genotypic and phenotypic patterns: Nostoc linckia (cyanobacterium); Sordaria fimicola (coprophilous fungus); Triticum dicoccoides and Hordeum spontaneum (wild cereals); Drosophila melanogaster (fruit fly); Spalax ehrenbergi superspecies (blind subterranean mole rats); Acomys cahirinus and Apodemus mystacinus (aboveground rodents). We also studied globally and regionally the population genetics of 1,200 species from bacteria to mammals, primarily based on literature data and species richness of 3,000 species in the two ''evolution canyons'' (ECs).The aforementioned model organisms comprise haploids and diploids, inbreeders and ...

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Section: Nfs †supporting

confidence: 64%

“…Fertility diminished slightly for interslope strains compared with intraslope crosses. There was no crossfertility between strains from widely separated areas in Israel, America, and Canada (53). Crossfertility declines with ecogeographic distance.…”

Section: Nfs †mentioning

confidence: 99%