Chromosome-level genome assembly of sea scallop Placopecten magellanicus provides insights into the genetic characteristics and adaptive evolution of large scallops

Placopecten magellanicus (Gmelin, 1791), a deep-sea Atlantic scallop, holds significant commercial value as a benthic marine bivalve along the northwest Atlantic coast. Recognizing its economic importance, the need to reconstruct its genome assembly becomes apparent, fostering insights into natural...

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Veröffentlicht in:Genomics (San Diego, Calif.) Calif.), 2023-11, Vol.115 (6), p.110747, Article 110747
Hauptverfasser: Xie, Xi, Teng, Weiming, Yu, Zuoan, Li, Dacheng, Yang, Miao, Zhang, Haijiao, Zheng, Jie, Li, Hualin, Sun, Yongxin, Liu, Xiangfeng, Zhou, Zunchun, Zhang, Xiliang, Du, Shaojun, Li, Qi, Chang, Yaqing, Zhang, Ming, Wang, Qingzhi
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container_title Genomics (San Diego, Calif.)
container_volume 115
creator Xie, Xi
Teng, Weiming
Yu, Zuoan
Li, Dacheng
Yang, Miao
Zhang, Haijiao
Zheng, Jie
Li, Hualin
Sun, Yongxin
Liu, Xiangfeng
Zhou, Zunchun
Zhang, Xiliang
Du, Shaojun
Li, Qi
Chang, Yaqing
Zhang, Ming
Wang, Qingzhi
description Placopecten magellanicus (Gmelin, 1791), a deep-sea Atlantic scallop, holds significant commercial value as a benthic marine bivalve along the northwest Atlantic coast. Recognizing its economic importance, the need to reconstruct its genome assembly becomes apparent, fostering insights into natural resources and generic breeding potential. This study reports a high-quality chromosome-level genome of P. magellanicus, achieved through the integration of Illumina short read sequencing, PacBio HiFi sequencing, and Hi-C sequencing techniques. The resulting assembly spans 1778 Mb with a scaffold N50 of 86.71 Mb. An intriguing observation arises - the genome size of P. magellanicus surpasses that of its Pectinidae family peers by 1.80 to 2.46 times. Within this genome, 28,111 protein-coding genes were identified. Comparative genomic analysis involving five scallop species unveils the critical determinant of this expanded genome: the proliferation of repetitive sequences recently inserted, contributing to its enlarged size. The landscape of whole genome collinearity sheds light on the relationships among scallop species, enhancing our broader understanding of their genomic framework. This genome provides genomic resources for future molecular biology research on scallops and serves as a guide for the exploration of longevity-related genes in scallops.
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title Chromosome-level genome assembly of sea scallop Placopecten magellanicus provides insights into the genetic characteristics and adaptive evolution of large scallops
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