Massive gene presence-absence variation shapes an open pan-genome in the Mediterranean mussel.

ABSTRACT:

Background

The Mediterranean mussel Mytilus galloprovincialis is an ecologically and economically relevant edible marine bivalve, highly invasive and resilient to biotic and abiotic stressors causing recurrent massive mortalities in other bivalves. Although these traits have been recently linked with the maintenance of a high genetic variation within natural populations, the factors underlying the evolutionary success of this species remain unclear.

Results

Here, after the assembly of a 1.28-Gb reference genome and the resequencing of 14 individuals from two independent populations, we reveal a complex pan-genomic architecture in M. galloprovincialis, with a core set of 45,000 genes plus a strikingly high number of dispensable genes (20,000) subject to presence-absence varia

SUBMITTER: Gerdol M 

PROVIDER: S-EPMC7653742 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature