期刊
AQUACULTURE
卷 434, 期 -, 页码 376-384出版社
ELSEVIER
DOI: 10.1016/j.aquaculture.2014.08.044
关键词
Pearl oyster; Biomineralization; Linkage map; Quantitative trait loci (QTL); Pinctada fucata martensii
资金
- National Program on Key Basic Research Program of China (973 Program) [2010CB126405]
- National High Technology Research and Development Program of China (863 Program) [2012AA10A414]
- National Science Foundation of China [41366003]
The pearl oyster, Pinctada fucata martensii, is an important aquaculture species in the production of free marine pearls in China and Japan; likewise, it is an ideal animal model for the study of biomineralization. A high-density genetic linkage map was constructed for P. fucata martensii with 3,117 SNP markers. The map spanned 990.74 cM whereas the genome coverage was 99.1% with an average interval of 0.39 cM, a resolution that was the highest in pearl oyster and even higher than that of any other mollusc. QTL mapping and association analysis suggested that six growth-related QTLs were identified, including two QTLs related with total weight and one QTL related with shell length, hinge line length, inner non-nacre covered shell length and shell nacre thickness. One marker, f394, was located at scaffold21710.1 vertical bar size9744 and 117 bp away from the highly homologous region with intron 2 of N16, a matrix protein gene involved in nacreous layer formation. Taken together, our study generates, for the first time, a high-density genetic linkage map for P. fucata martensii, which enables us to fine-map a gene potentially crucial for pearl formation, thus providing a target gene for selective breeding of P. fucata martensii to improve pearl production. (C) 2014 Elsevier B.V. All rights reserved.
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