Biotechnology Bulletin ›› 2014, Vol. 0 ›› Issue (6): 145-149.

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Isolation of Microsatellite in C. ectenes by Magnetic Beads

Deng Pingping, Shi Yonghai, Zhang Genyu, Zhang Zhiwen, Zhang Haiming, Lu Genhai, Liu Yongshi   

  1. Shanghai Fisheries Research Institute, Shanghai 200433)
  • Received:2013-09-27 Online:2014-06-25 Published:2014-06-25

Abstract: It was a study to develop microsatellite markers with the method of microsatellite enrichment by magnetic beads. Genomic DNA of C. ectenes was digested with restriction enzyme Mse I. The fragments of 400-1 000 bp were recycled and ligated with relevant adaptors, then the “complete genome PCR library” was constructed. The PCR products were hybridized by a biotin-labeled Oligo probe(CA)12, the microsatellites were enriched with magnetic beads. The eluted fragments from magnetic beads were amplified and cloned into pMD18-T vector. 118 positive clones were screened with PCR method from 170 clones. After sequenced, 97 microsatellite sequences were found, 59 pairs of SSR primers were designed, and 9 pairs of primers were polymorphism within 30 cultured Chang Jiang C. ectenes.

Key words: C. ectenes, Enrichment by magnetic beads, Microsatellite, Polymorphism