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Article

Evidence for genetic drift in endosymbionts (Buchnera): analyses of protein-coding genes.

Molecular biology and evolution - 1 Jan 1999

Wernegreen J J, Moran N A

Abstract excerpt

Buchnera, the bacterial endosymbionts of aphids, undergo severe population bottlenecks during maternal transmission through their hosts. Previous studies suggest an increased effect of drift within these strictly asexual, small populations, resulting in an increased fixation of slightly deleterious mutations. This study further explores sequence evolution in Buchnera using three approaches. First, patterns of...

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PMID: 10331254
DOI: 10.1093/oxfordjournals.molbev.a026040

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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Evidence for genetic drift in endosymbionts (Buchnera): analyses of protein-coding genes.PMID 10331254Read ↗

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Intraspecific variation in symbiont genomes: bottlenecks and the aphid-buchnera association.Semantic proximity Read ↗

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Gene expression levels influence amino acid usage and evolutionary rates in endosymbiotic bacteria.Semantic proximity Read ↗

A strong effect of AT mutational bias on amino acid usage in Buchnera is mitigated at high-expression genes.Semantic proximity Read ↗

Mutation exposed: a neutral explanation for extreme base composition of an endosymbiont genome.Semantic proximity Read ↗

Accumulation of species-specific amino acid replacements that cause loss of particular protein functions in Buchnera, an endocellular bacterial symbiont.Semantic proximity Read ↗

Extremely low levels of genetic polymorphism in endosymbionts (Buchnera) of aphids (Pemphigus).Semantic proximity Read ↗

The roles of positive and negative selection in the molecular evolution of insect endosymbionts.Semantic proximity Read ↗

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