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- Christmas, Matthew JUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab (author)
Chromosomal inversions associated with environmental adaptation in honeybees
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- 2018-12-21
- WILEY,2019
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-383207
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383207URI
- https://doi.org/10.1111/mec.14944DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Chromosomal inversions can facilitate local adaptation in the presence of gene flow by suppressing recombination between well-adapted native haplotypes and poorly adapted migrant haplotypes. East African mountain populations of the honeybee Apis mellifera are highly divergent from neighbouring lowland populations at two extended regions in the genome, despite high similarity in the rest of the genome, suggesting that these genomic regions harbour inversions governing local adaptation. Here, we utilize a new highly contiguous assembly of the honeybee genome to characterize these regions. Using whole-genome sequencing data from 55 highland and lowland bees, we find that the highland haplotypes at both regions are present at high frequencies in three independent highland populations but extremely rare elsewhere. The boundaries of both divergent regions are characterized by regions of high homology with each other positioned in opposite orientations and contain highly repetitive, long inverted repeats with homology to transposable elements. These regions are likely to represent inversion breakpoints that participate in nonallelic homologous recombination. Using long-read data, we confirm that the lowland samples are contiguous across breakpoint regions. We do not find evidence for disruption of functional sequence by these breakpoints, which suggests that the inversions are likely maintained due to their allelic content conferring local adaptation in highland environments. Finally, we identify a third divergent genomic region, which contains highly divergent segregating haplotypes that also may contain inversion variants under selection. The results add to a growing body of evidence indicating the importance of chromosomal inversions in local adaptation.
Subject headings and genre
- NATURVETENSKAP Biologi Genetik hsv//swe
- NATURAL SCIENCES Biological Sciences Genetics hsv//eng
- chromosomal inversion
- honeybee
- local adaptation
- long-read sequencing
- nonallelic homologous recombination
- structural variation
Added entries (persons, corporate bodies, meetings, titles ...)
- Wallberg, AndreasUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)anwal839 (author)
- Bunikis, IgnasUppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för immunologi, genetik och patologi(Swepub:uu)ignbu776 (author)
- Olsson, AnnaUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)annol533 (author)
- Wallerman, OlaUppsala universitet,Science for Life Laboratory, SciLifeLab,Institutionen för medicinsk biokemi och mikrobiologi(Swepub:uu)olwal516 (author)
- Webster, Matthew TUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab(Swepub:uu)maweb226 (author)
- Uppsala universitetInstitutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)
Related titles
- In:Molecular Ecology: WILEY28:6, s. 1358-13740962-10831365-294X
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