Chromosome-Level Genome Assembly of the Blue Mussel Mytilus chilensis Reveals Molecular Signatures Facing the Marine Environment

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dc.contributor.authorGallardo-Escárate, Cristian
dc.contributor.authorValenzuela-Muñoz, Valentina
dc.contributor.authorNuñez-Acuña, Gustavo
dc.contributor.authorValenzuela-Miranda, Diego
dc.contributor.authorTapia, Fabian J.
dc.contributor.authorYévenes, Marco
dc.contributor.authorGajardo, Gonzalo
dc.contributor.authorToro, Jorge E.
dc.contributor.authorOyarzún, Pablo A.
dc.contributor.authorArriagada, Gloria
dc.contributor.authorNovoa, Beatriz
dc.contributor.authorFigueras, Antonio
dc.contributor.authorRoberts, Steven
dc.contributor.authorGerdol, Marco
dc.date.accessioned2023-11-07T20:47:54Z
dc.date.available2023-11-07T20:47:54Z
dc.date.issued2023-04
dc.descriptionINDEXACIÓN: SCOPUS.es
dc.description.abstractThe blue mussel Mytilus chilensis is an endemic and key socioeconomic species inhabiting the southern coast of Chile. This bivalve species supports a booming aquaculture industry, which entirely relies on artificially collected seeds from natural beds that are translocated to diverse physical–chemical ocean farming conditions. Furthermore, mussel production is threatened by a broad range of microorganisms, pollution, and environmental stressors that eventually impact its survival and growth. Herein, understanding the genomic basis of the local adaption is pivotal to developing sustainable shellfish aquaculture. We present a high-quality reference genome of M. chilensis, which is the first chromosome-level genome for a Mytilidae member in South America. The assembled genome size was 1.93 Gb, with a contig N50 of 134 Mb. Through Hi-C proximity ligation, 11,868 contigs were clustered, ordered, and assembled into 14 chromosomes in congruence with the karyological evidence. The M. chilensis genome comprises 34,530 genes and 4795 non-coding RNAs. A total of 57% of the genome contains repetitive sequences with predominancy of LTR-retrotransposons and unknown elements. Comparative genome analysis of M. chilensis and M. coruscus was conducted, revealing genic rearrangements distributed into the whole genome. Notably, transposable Steamer-like elements associated with horizontal transmissible cancer were explored in reference genomes, suggesting putative relationships at the chromosome level in Bivalvia. Genome expression analysis was also conducted, showing putative genomic differences between two ecologically different mussel populations. The evidence suggests that local genome adaptation and physiological plasticity can be analyzed to develop sustainable mussel production. The genome of M. chilensis provides pivotal molecular knowledge for the Mytilus complex. © 2023 by the authors.es
dc.identifier.citationGenes, Volume 14, Issue 4, April 2023, Article number 876es
dc.identifier.doi10.3390/genes14040876
dc.identifier.issn20734425
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53866
dc.language.isoenes
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)es
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectchromosome-level assemblyes
dc.subjectcomparative genomicses
dc.subjectMytilus chilensises
dc.subjecttranscriptomicses
dc.titleChromosome-Level Genome Assembly of the Blue Mussel Mytilus chilensis Reveals Molecular Signatures Facing the Marine Environmentes
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