A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis
Abstract Larimichthys polyactis is a commercially important marine fish species in Eastern Asia, yet very few genetic resources exist. In particular, genetic linkage maps are critical tools for genetic breeding. In this study, we generated a high resolution linkage map from a family of 110 individua...
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Nature Portfolio
2020
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oai:doaj.org-article:21a963c6040548df96acb893821f8efd2021-12-02T15:32:59ZA first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis10.1038/s41598-020-68592-02045-2322https://doaj.org/article/21a963c6040548df96acb893821f8efd2020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-68592-0https://doaj.org/toc/2045-2322Abstract Larimichthys polyactis is a commercially important marine fish species in Eastern Asia, yet very few genetic resources exist. In particular, genetic linkage maps are critical tools for genetic breeding. In this study, we generated a high resolution linkage map from a family of 110 individuals and their parents by resequencing the individuals. 3,802 effective SNPs were mapped to 24 linkage groups (LGs). The map spanned 2,567.39 cm, with an average marker interval of 0.66 cm. We used the map to conduct QTL analysis for growth traits, and found 31 markers were significantly associated with growth-related traits. Specifically, three SNPs were identified for total length, nineteen SNPs for body length, and nine SNPs for body weight. The identified SNPs could explain 15.2–22.6% of the phenotypic variation. SNPs associated with growth traits were distributed on LG6 and LG11, and candidate genes included, kif26b, bat1, gna1, gbgt1, and amfr, which may regulate growth. The linkage map and mapped QTLs would be useful for improving the quality of L. polyactis via marker-assisted selection.Feng LiuWei ZhanQingping XieHonglin ChenBao LouWantu XuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020) |
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Medicine R Science Q Feng Liu Wei Zhan Qingping Xie Honglin Chen Bao Lou Wantu Xu A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| description |
Abstract Larimichthys polyactis is a commercially important marine fish species in Eastern Asia, yet very few genetic resources exist. In particular, genetic linkage maps are critical tools for genetic breeding. In this study, we generated a high resolution linkage map from a family of 110 individuals and their parents by resequencing the individuals. 3,802 effective SNPs were mapped to 24 linkage groups (LGs). The map spanned 2,567.39 cm, with an average marker interval of 0.66 cm. We used the map to conduct QTL analysis for growth traits, and found 31 markers were significantly associated with growth-related traits. Specifically, three SNPs were identified for total length, nineteen SNPs for body length, and nine SNPs for body weight. The identified SNPs could explain 15.2–22.6% of the phenotypic variation. SNPs associated with growth traits were distributed on LG6 and LG11, and candidate genes included, kif26b, bat1, gna1, gbgt1, and amfr, which may regulate growth. The linkage map and mapped QTLs would be useful for improving the quality of L. polyactis via marker-assisted selection. |
| format |
article |
| author |
Feng Liu Wei Zhan Qingping Xie Honglin Chen Bao Lou Wantu Xu |
| author_facet |
Feng Liu Wei Zhan Qingping Xie Honglin Chen Bao Lou Wantu Xu |
| author_sort |
Feng Liu |
| title |
A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| title_short |
A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| title_full |
A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| title_fullStr |
A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| title_full_unstemmed |
A first genetic linage map construction and QTL mapping for growth traits in Larimichthys polyactis |
| title_sort |
first genetic linage map construction and qtl mapping for growth traits in larimichthys polyactis |
| publisher |
Nature Portfolio |
| publishDate |
2020 |
| url |
https://doaj.org/article/21a963c6040548df96acb893821f8efd |
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