Frontiers in Genetics (May 2020)

The Whole-Genome Sequencing and Hybrid Assembly of Mytilus coruscus

  • Ronghua Li,
  • Ronghua Li,
  • Ronghua Li,
  • Weijia Zhang,
  • Junkai Lu,
  • Junkai Lu,
  • Zhouyi Zhang,
  • Changkao Mu,
  • Changkao Mu,
  • Weiwei Song,
  • Weiwei Song,
  • Herve Migaud,
  • Herve Migaud,
  • Herve Migaud,
  • Chunlin Wang,
  • Chunlin Wang,
  • Michaël Bekaert

DOI
https://doi.org/10.3389/fgene.2020.00440
Journal volume & issue
Vol. 11

Abstract

Read online

The hard-shelled mussel (Mytilus coruscus) is an economically important shellfish that has been cultivated for the last decade. Due to over-exploitation, most mussel stocks have dramatically declined. Efforts to study this species' natural distribution, genetics, breeding, and cultivation have been hindered by the lack of a high-quality reference genome. To address this, we produced a hybrid high-quality reference genome of M. coruscus using a long-read platform to assemble the genome and short-read, high-quality technology to accurately correct for sequence errors. The genome was assembled into 10,484 scaffolds, a total length of 1.90 Gb, and a scaffold N50 of 898 kb. Ab initio annotation of the M. coruscus genome assembly identified a total of 42,684 genes. This accurate reference genome of M. coruscus provides an essential resource with the advantage of enabling the genome-scale selective breeding of M. coruscus. More importantly, it will also help in deciphering the speciation and local adaptation of the Mytilus species.

Keywords