Data from: The fire ant social supergene is characterized by extensive gene and transposable element copy number variation

  • Tiffany Chang (Contributor)
  • John Wang (Contributor)
  • Viet Dai Dang (Contributor)
  • Silvia Fontana (Contributor)
  • Ni-Chen Chang (Contributor)
  • Chih-Chi Lee (Contributor)

Dataset

Description

In the fire ant Solenopsis invicta, a supergene composed of ~600 genes and having two variants, SB and Sb, regulates colony social form. In single queen colonies all individuals carry only the SB allele, while in multiple queen colonies, some individuals carry the Sb allele. In this study we characterized genes with copy number variation between SB and Sb-carrying individuals. We showed extensive acquisition of gene duplicates in Sb genome, with some likely involved in polygyne-related phenotypes. We found 260 genes with differences in copy number between SB and Sb, of which 239 are in greater copy number in Sb. We observed TE accumulation on Sb, likely due to the accumulation of repetitive elements on the non-recombining chromosome. We found a weak correlation between TE copy number and differential expression, suggesting some TEs may still be proliferating in Sb, however many of the duplicated TEs were already silenced. Among the 115 non-TE genes with higher copy in Sb, enzymes responsible for cuticular hydrocarbon synthesis were highly represented. These include a desaturase and an elongase; both potentially responsible for differential queen odor and likely beneficial for polygyne ants. These genes seem to have translocated into the supergene from other chromosomes and proliferated by multiple duplication events. While the presence of transposable elements (TEs) in supergenes is well documented, little is known about duplication of non-TE genes and their possible adaptive role. Overall, our results suggest that gene duplications may be an important factor leading to monogyne and polygyne ant societies.,nr-sinv-refA non-redundant collection of fire ant mRNA from various datasets, including transposable elements enriched datasetsSb-vs-SB_CNV_genes_SinvProtein coding genes with copy number variations between Sb and SB genotypes in Solenopsis invictaXM_011167779_FAS_alignmentAlignment of several copies of a fatty acid synthase gene (XM_011167779). The alignment contain the reference mRNA (first sequence), and copies found on SB and Sb genome. For each copy, the header reports the chromosome where the copy was found, or the name of the contig (in case the chromosomal location was unknown).XM_011166684_reductase_alignmentAlignment of several copies of a reductase gene (XM_011166684). The alignment contain the reference mRNA (first sequence), and copies found on SB and Sb genome. For each copy, the header reports the chromosome where the copy was found, or the name of the contig (in case the chromosomal location was unknown).XM_011176180_CytP450_alignmentAlignment of several copies of a cytochrome P450 gene (XM_011176180). The alignment contain the reference mRNA (first sequence), and copies found on SB and Sb genome. For each copy, the header reports the chromosome where the copy was found, or the name of the contig (in case the chromosomal location was unknown).XM_011167365_desaturase_alignmentAlignment of several copies of a desaturase gene (XM_011167365). The alignment contain the reference mRNA (first sequence), and copies found on SB and Sb genome. For each copy, the header reports the chromosome where the copy was found, or the name of the contig (in case the chromosomal location was unknown).SI.CL.01.cl.0146.Contig1_elongase_alignmentAlignment of several copies of an elongase gene (SI.CL.01.cl.0146.Contig1). The alignment contain the reference mRNA (first sequence), and copies found on SB and Sb genome. For each copy, the header reports the chromosome where the copy was found, or the name of the contig (in case the chromosomal location was unknown).,
Date made available2020 Jan 1
PublisherUnknown Publisher

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