The Genome of Blue-Capped Cordon-Bleu Uncovers Hidden Diversity of LTR Retrotransposons in Zebra Finch

Boman, Jesper (author): Uppsala universitet,Evolutionsbiologi,Science for Life Laboratory, SciLifeLab

Frankl-Vilches, Carolina (author): Max Planck Inst Ornithol, Dept Behav Neurobiol, D-82319 Seewiesen, Germany

dos Santos, Michelly da Silva (author): Inst Evandro Chagas, SAMAM, Lab Cultura Tecidos & Citogenet, Ananindeua, Para, Brazil;Univ Fed Para, Fac Ciencias Nat ICEN, BR-66075110 Belem, Para, Brazil

de Oliveira, Edivaldo H. C. (author): Inst Evandro Chagas, SAMAM, Lab Cultura Tecidos & Citogenet, Ananindeua, Para, Brazil;Univ Fed Para, Fac Ciencias Nat ICEN, BR-66075110 Belem, Para, Brazil

Gahr, Manfred (author): Max Planck Inst Ornithol, Dept Behav Neurobiol, D-82319 Seewiesen, Germany

Suh, Alexander (author): Uppsala universitet,Evolutionsbiologi,Science for Life Laboratory, SciLifeLab

(creator_code:org_t)

Related links:: https://doi.org/10.3...; show more...; https://uu.diva-port... (primary) (Raw object); https://www.mdpi.com...; https://urn.kb.se/re...; https://doi.org/10.3...; show less...

Abstract Subject headings

Avian genomes have perplexed researchers by being conservative in both size and rearrangements, while simultaneously holding the blueprints for a massive species radiation during the last 65 million years (My). Transposable elements (TEs) in bird genomes are relatively scarce but have been implicated as important hotspots for chromosomal inversions. In zebra finch (Taeniopygia guttata), long terminal repeat (LTR) retrotransposons have proliferated and are positively associated with chromosomal breakpoint regions. Here, we present the genome, karyotype and transposons of blue-capped cordon-bleu (Uraeginthus cyanocephalus), an African songbird that diverged from zebra finch at the root of estrildid finches 10 million years ago (Mya). This constitutes the third linked-read sequenced genome assembly and fourth in-depth curated TE library of any bird. Exploration of TE diversity on this brief evolutionary timescale constitutes a considerable increase in resolution for avian TE biology and allowed us to uncover 4.5 Mb more LTR retrotransposons in the zebra finch genome. In blue-capped cordon-bleu, we likewise observed a recent LTR accumulation indicating that this is a shared feature of Estrildidae. Curiously, we discovered 25 new endogenous retrovirus-like LTR retrotransposon families of which at least 21 are present in zebra finch but were previously undiscovered. This highlights the importance of studying close relatives of model organisms.

By the author/editor: Boman, Jesper; Frankl-Vilches, ...; dos Santos, Mich ...; de Oliveira, Edi ...; Gahr, Manfred; Suh, Alexander

About the subject

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.