Evolution of genome structure in the Drosophila simulans species complex.
Evolution of genome structure in the Drosophila simulans species complex.
复制标题
拟果蝇种间复合体基因组结构的进化。
DOI:
10.1101/gr.263442.120
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发表时间:
2021-03
期刊:
影响因子:
7
通讯作者:
Emerson JJ
中科院分区:
文献类型:
--
作者:
Chakraborty M;Chang CH;Khost DE;Vedanayagam J;Adrion JR;Liao Y;Montooth KL;Meiklejohn CD;Larracuente AM;Emerson JJ
The rapid evolution of repetitive DNA sequences, including satellite DNA, tandem duplications, and transposable elements, underlies phenotypic evolution and contributes to hybrid incompatibilities between species. However, repetitive genomic regions are fragmented and misassembled in most contemporary genome assemblies. We generated highly contiguous de novo reference genomes for the Drosophila simulans species complex (D. simulans, D. mauritiana, and D. sechellia), which speciated ∼250,000 yr ago. Our assemblies are comparable in contiguity and accuracy to the current D. melanogaster genome, allowing us to directly compare repetitive sequences between these four species. We find that at least 15% of the D. simulans complex species genomes fail to align uniquely to D. melanogaster owing to structural divergence—twice the number of single-nucleotide substitutions. We also find rapid turnover of satellite DNA and extensive structural divergence in heterochromatic regions, whereas the euchromatic gene content is mostly conserved. Despite the overall preservation of gene synteny, euchromatin in each species has been shaped by clade- and species-specific inversions, transposable elements, expansions and contractions of satellite and tRNA tandem arrays, and gene duplications. We also find rapid divergence among Y-linked genes, including copy number variation and recent gene duplications from autosomes. Our assemblies provide a valuable resource for studying genome evolution and its consequences for phenotypic evolution in these genetic model species.
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DOI:
10.1534/g3.118.200619
发表时间:
2018-11-06
期刊:
G3 (Bethesda, Md.)
影响因子:
--
作者:
Battlay P;Leblanc PB;Green L;Garud NR;Schmidt JM;Fournier-Level A;Robin C
通讯作者:
Robin C
影响因子:
10.7
作者:
Blumenstiel, JP;Hartl, DL;Lozovsky, ER
通讯作者:
Lozovsky, ER
影响因子:
3.8
作者:
Araripe, L. O.;Tao, Y.;Lemos, B.
通讯作者:
Lemos, B.
影响因子:
9.8
作者:
Begun, David J.;Holloway, Alisha K.;Stevens, Kristian;Hillier, LaDeana W.;Poh, Yu-Ping;Hahn, Matthew W.;Nista, Phillip M.;Jones, Corbin D.;Kern, Andrew D.;Dewey, Colin N.;Pachter, Lior;Myers, Eugene;Langley, Charles H.
通讯作者:
Langley, Charles H.
DOI:
10.1073/pnas.0702552104
发表时间:
2007-07-03
影响因子:
11.1
作者:
Bergman, Casey M.;Bensasson, Douda
通讯作者:
Bensasson, Douda