A deletion in the bovine FANCI gene compromises fertility by causing fetal death and brachyspina

Carole Charlier, Jørgen Steen Agerholm, Wouter Coppieters, Peter Karlskov-Mortensen, Wanbo Li, Gerben de Jong, Corinne Fasquelle, Latifa Karim, Susanna Cirera Salicio, Nadine Gambisano, Naima Ahariz, Erik Mullaart, Michel Georges, Merete Fredholm

    66 Citations (Scopus)
    1431 Downloads (Pure)

    Abstract

    Fertility is one of the most important traits in dairy cattle, and has been steadily declining over the last decades. We herein use state-of-the-art genomic tools, including high-throughput SNP genotyping and next-generation sequencing, to identify a 3.3 Kb deletion in the FANCI gene causing the brachyspina syndrome (BS), a rare recessive genetic defect in Holstein dairy cattle. We determine that despite the very low incidence of BS (&1/100,000), carrier frequency is as high as 7.4% in the Holstein breed. We demonstrate that this apparent discrepancy is likely due to the fact that a large proportion of homozygous mutant calves die during pregnancy. We postulate that several other embryonic lethals may segregate in livestock and significantly compromise fertility, and propose a genotype-driven screening strategy to detect the corresponding deleterious mutations.

    Original languageEnglish
    Article numbere43085
    JournalPLoS ONE
    Volume7
    Issue number8
    Number of pages7
    ISSN1932-6203
    DOIs
    Publication statusPublished - 29 Aug 2012

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