ArticleGenes & genomics2022
De novo genome assembly and annotation of Holothuria scabra (Jaeger, 1833) from nanopore sequencing reads.
Article in Genes & genomics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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Who cites it
5 citing papers in PubMed.
- Chromosome-level genome assembly of the sea cucumber, Colochirus anceps.Scientific data · 2025Article
- Article
- Chromosomal-level genome assembly and annotation of the tropical sea cucumber Holothuria scabra.Scientific data · 2024Article
- Sea cucumbers: an emerging system in evo-devo.EvoDevo · 2024Review
- The draft genome of the tropical sea cucumberFrontiers in genetics · 2023Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHolothuria scabra is a costly gourmet and traditional Chinese tonic medicine. However, the lack of high-quality genome information hinders the genetic, phylogenetic, and bioactivator researches.
objectiveTo construct high-quality genomic data of H. scabra and conduct genome-wide phylogenetic analysis.
methodsThe whole genome of a male H. scabra was sequenced based on Nanopore MinION platform, and the sequence was assembled by wtdbg2. Transcriptome sequencing was used to aid the gene annotation. Repeat sequences, non-coding RNA, pseudogene and gene functional annotation were analyzed. 750 single-copy gene families from ten species were applied to construct phylogenetic tree for evolutionary analysis by using the ML method.
resultsThe H. scabra genome of 1.18 Gb (N50 = 1557,492 bp) with 500.42 Mb of putative repetitive sequences was assembled from a male H. scabra individual, and 16,642 protein-coding genes, 951 pseudogenes, 1791 motifs and 45,400 domains from the generated assembly were identified. The divergence time between H. scabra and its ancestor was estimated approximately 192.6 million years ago. H. scabra and A. japonicas joined together while sea urchin and sea star diverged about 440 Mya ago. Some key genes involved in notochord and gill slits development, skeleton degeneration and nervous system, as well as homeobox genes differ between H. scabra and Apostichopus japonicas.
conclusionWe report the first whole genome of H. scabra with expectation that this will be a valuable resource for genetic, phylogenetic, breading, molecular biology and bioactivator studies of sea cucumbers and other invertebrates.
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