NDLI: Meiotic drive is associated with sexual incompatibility in Neurospora

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Meiotic drive is associated with sexual incompatibility in Neurospora

Content Provider	Oxford Academic
Author	Vogan, Aaron A. Svedberg, Jesper Grudzinska-Sterno, Magdalena Johannesson, Hanna
Copyright Year	2022
Abstract	Evolution of Bateson-Dobzhansky-Muller (BDM) incompatibilities is thought to represent a key step in the formation of separate species. They are incompatible alleles that have evolved in separate populations and are exposed in hybrid offspring as hybrid sterility or lethality. In this study, we reveal a previously unconsidered mechanism promoting the formation of BDM incompatibilities, meiotic drive. Theoretical studies have evaluated the role that meiotic drive, the phenomenon whereby selfish elements bias their transmission to progeny at ratios above 50:50, plays in speciation, and have mostly concluded that drive could not result in speciation on its own. Using the model fungus Neurospora, we demonstrate that the large meiotic drive haplotypes, Sk-2 and Sk-3, contain putative sexual incompatibilities. Our experiments revealed that although crosses between Neurospora intermedia and Neurospora metzenbergii produce viable progeny at appreciable rates, when strains of N. intermedia carry Sk-2 or Sk-3 the proportion of viable progeny drops substantially. Additionally, it appears that Sk-2 and Sk-3 have accumulated different incompatibility phenotypes, consistent with their independent evolutionary history. This research illustrates how meiotic drive can contribute to reproductive isolation between populations, and thereby speciation.
Related Links	https://academic.oup.com/evolut/article-pdf/76/11/2687/50000204/evolut2687.pdf
Ending Page	2696
Starting Page	2687
File Format	PDF
ISSN	00143820
e-ISSN	15585646
DOI	10.1111/evo.14630
Journal	Evolution
Issue Number	11
Volume Number	76
Language	English
Publisher	Oxford Academic
Publisher Date	2022-11-01
Access Restriction	Open
Subject Keyword	Biological Sciences Evolutionary Biology Science and Mathematics Bateson-dobzhansky-muller Incompatibility Meiotic Drive Neurospora Sexual Incompatibility Speciation
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics Agricultural and Biological Sciences

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