The study reports the chromosomal-level genome assembly of the long-spined sea urchin Diadema setosum, a prolific grazer that can cause severe bioerosion on coral reefs. The assembled genome is 885.8 Mb in size, with a scaffold N50 of 38.3 Mb and 98.1% BUSCO completeness. By incorporating Omni-C data, 98.6% of the genome was anchored to 22 pseudochromosomes, matching the known karyotype of D. setosum.
The genome assembly contained 27,478 gene models, including 23,030 protein-coding genes. Analysis of the genome revealed a repetitive content of 36.98%, with DNA transposons, LINEs, and LTRs being the most abundant repeat types. Telomeric repeats were identified in 16 out of the 22 pseudochromosomes.
The high-quality genome assembly provides a valuable resource for further understanding the ecology and evolution of this ecologically important sea urchin species, which is widely distributed in the Indo-Pacific region and can have significant impacts on coral reef ecosystems through its grazing activities.
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by Hong Kong Bi... at www.biorxiv.org 01-18-2024
https://www.biorxiv.org/content/10.1101/2024.01.16.575490v1Deeper Inquiries