Open Access

Construction and characterization of a BAC library from a gynogenetic channel catfish Ictalurus punctatus

  • Sylvie MA Quiniou1, 2,
  • Takayuki Katagiri1, 3,
  • Norman W Miller1,
  • Melanie Wilson1,
  • William R Wolters2 and
  • Geoffrey C Waldbieser2Email author
Genetics Selection Evolution200335:673

https://doi.org/10.1186/1297-9686-35-7-673

Received: 4 December 2002

Accepted: 9 April 2003

Published: 15 November 2003

Abstract

A bacterial artificial chromosome (BAC) library was constructed by cloning Hind III-digested high molecular weight DNA from a gynogenetic channel catfish, Ictalurus punctatus, into the vector pBeloBAC11. Approximately 53 500 clones were arrayed in 384-well plates and stored at -80°C (CCBL1), while clones from a smaller insert size fraction were stored at -80°C without arraying (CCBL2). Pulsed-field gel electrophoresis of 100 clones after Not I digestion revealed an average insert size of 165 kb for CCBL1 and 113 kb for CCBL2. Further characterization of CCBL1 demonstrated that 10% of the clones did not contain an insert. CCBL1 provides a 7.2-fold coverage of the channel catfish haploid genome. PCR-based screening demonstrated that 68 out of 74 unique loci were present in the library. This represents a 92% chance to find a unique sequence. These libraries will be useful for physical mapping of the channel catfish genome, and identification of genes controlling major traits in this economically important species.

Keywords

bacterial artificial chromosome catfish genome Ictalurus punctatus

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Authors’ Affiliations

(1)
Department of Microbiology, University of Mississippi Medical Center
(2)
U.S. Department of Agriculture, Agricultural Research Service, Catfish Genetics Research Unit, Thad Cochran National Warmwater Aquaculture Center
(3)
Hubbard Center for Genome Studies, University of New Hampshire

Copyright

© INRA, EDP Sciences 2003

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