Next generation sequencing of chromosome-specific libraries sheds light on genome evolution in paleotetraploid sterlet (Acipenser ruthenus)

Daria A. Andreyushkova, Alexey I. Makunin, Violetta R. Beklemisheva, Svetlana A. Romanenko, Anna S. Druzhkova, Larisa S. Biltueva, Natalya A. Serdyukova, Alexander S. Graphodatsky, Vladimir A. Trifonov

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Several whole genome duplication (WGD) events followed by rediploidization took place in the evolutionary history of vertebrates. Acipenserids represent a convenient model group for investigation of the consequences of WGD as their representatives underwent additional WGD events in different lineages resulting in ploidy level variation between species, and these processes are still ongoing. Earlier, we obtained a set of sterlet (Acipenser ruthenus) chromosome‐specific libraries by microdissection and revealed that they painted two or four pairs of whole sterlet chromosomes, as well as additional chromosomal regions, depending on rediploidization status and chromosomal rearrangements after genome duplication. In this study, we employed next generation sequencing to estimate the content of libraries derived from different paralogous chromosomes of sterlet. For this purpose, we aligned the obtained reads to the spotted gar (Lepisosteus oculatus) reference genome to reveal syntenic regions between these two species having diverged 360 Mya. We also showed that the approach is effective for synteny prediction at various evolutionary distances and allows one to clearly distinguish paralogous chromosomes in polyploid genomes. We postulated that after the acipenserid‐specific WGD sterlet karyotype underwent multiple interchromosomal rearrangements, but different chromosomes were involved in this process unequally.

Original languageEnglish
Article number318
Number of pages12
JournalGenes
Volume8
Issue number11
DOIs
Publication statusPublished - 10 Nov 2017

Keywords

  • Fluorescence in situ hybridization
  • High-throughput sequencing
  • Paralog chromosomes
  • Spotted gar
  • Sturgeon
  • Synteny
  • Whole genome duplication
  • paralog chromosomes
  • ZEBRAFISH
  • EVENTS
  • FUSION
  • STURGEON ACIPENSER
  • spotted gar
  • whole genome duplication
  • sturgeon
  • synteny
  • fluorescence in situ hybridization
  • DYNAMICS
  • KARYOTYPE EVOLUTION
  • MAP
  • high-throughput sequencing
  • PLASTICITY
  • AGE

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