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A tale of two genomes: What drives mitonuclear discordance in asexual lineages of a freshwater snail?
Journal article   Open access   Peer reviewed

A tale of two genomes: What drives mitonuclear discordance in asexual lineages of a freshwater snail?

Maurine Neiman and Joel Sharbrough
BioEssays, Vol.45(6), 2200234
06/2023
DOI: 10.1002/bies.202200234
PMID: 37026407
Appears in  UI Libraries Support Open Access
url
https://doi.org/10.1002/bies.202200234View
Published (Version of record) Open Access

Abstract

We use genomic information to tell us stories of evolutionary origins. But what does it mean when different genomes report wildly different accounts of lineage history? This genomic "discordance" can be a consequence of a fascinating suite of natural history and evolutionary phenomena, from the different inheritance mechanisms of nuclear versus cytoplasmic (mitochondrial and plastid) genomes to hybridization and introgression to horizontal transfer. Here, we explore how we can use these distinct genomic stories to provide new insights into the maintenance of sexual reproduction, one of the most important unanswered questions in biology. We focus on the strikingly distinct nuclear versus mitochondrial versions of the story surrounding the origin and maintenance of asexual lineages in Potamopyrgus antipodarum, a New Zealand freshwater snail. While key questions remain unresolved, these data inspire multiple testable hypotheses that can be powerfully applied across a broad range of taxa toward a deeper understanding of the causes and consequences of mitonuclear discordance, the maintenance of sex, and the origin of new asexual lineages.
 apomixis parthenogenesis cytonuclear sexual reproduction mitochondrial mollusk UIOWA OA Agreement

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