Journal of Tropical Oceanography ›› 2023, Vol. 42 ›› Issue (2): 78-86.doi: 10.11978/2022108CSTR: 32234.14.2022108

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Discovery and verification of SNP in Acanthopagrus latus

ZHENG Guobin(), ZHAO Hongbo, HUANG Liangmin, ZHANG Jing, LIU Xiande()   

  1. Fishery College of Jimei University, Key Laboratory of Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen 361021, China
  • Received:2022-05-13 Revised:2022-07-09 Online:2023-03-10 Published:2022-07-14
  • Contact: LIU Xiande. email:xdliu@jmu.edu
  • Supported by:
    National Key R&D Program of China(2018YFD0901404); Evaluation of the Release Effect of Acanthopagrus latus in Xiamen Bay(S20166)

Abstract:

In this experiment, 'Acanthopagrus latus', an important economic fish in the southeast coast of China, was used as the experimental material. The SNPs were discovered by DNA re-sequencing in fifty A. latus, and partial SNPs were genotyped using MassARRAY® DNA mass spectrometry. The results are presented as followed: 1) the re-sequencing of 50 wild A. latus generated a total of about 233.48 GB raw data. After filtering adapters and low-quality data, 233.43 Gb clear data were obtained. The average data size of each sample was 4.67 GB, and the average GC content was 42.85%, Q20 is above 96.56%, Q30 is above 91.1%, and the comparison rate between the clear data and the reference genome is 98.06% ~ 99.47%; 2) a total of 13843766 SNPs were discovered from 50 individuals by GATK, and 6501 high-quality SNPs were obtained after filtering; 3) thirty SNPs from the high-quality SNP were selected randomly and genotyped using MassARRAY technology. The detection rate (loci that can be genotyped) was reached at 98%. The consistency between the genome re-sequencing and the MassARRAY results was 64.83%, which indicated that the two techniques were different in detecting SNPs. In summary, a method for mining, filtering and validating SNP markers of A. latus bream has been established in this study, and the developed SNP loci can be used in evaluation of proliferation and stocking effect and genome selection breeding of A. latus in the future.

Key words: Acanthopagrus latus, Re-sequencing, SNP, MassARRAY