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doi:10.1534/genetics.106.055541
A more recent version of this article appeared on July 1, 2006.
REGULAR RESEARCH PAPERS |
A second generation integrated map of the silkworm reveals synteny and conserved gene order between lepidopteran insects
Yuji Yasukochi 1*, Laksmikutty A. Ashakumary 1, Kotaro Baba 1, Atsuo Yoshido 2 and Ken Sahara 2
1 National Institute of Agrobiological Science
2 Hokkaido University
* To whom correspondence should be addressed. E-mail: yaskoch{at}affrc.go.jp.
Submitted on January 6, 2006
Revised on February 11, 2006
Accepted on 5 March 2006
A second generation linkage map was constructed for the silkworm, Bombyx mori, focusing on mapping Bombyx sequences appearing in public nucleotide databases and bacterial artificial chromosome (BAC) contigs. 874 BAC contigs containing 5,067 clones (22.0% of the library) were constructed by PCR-based screening with sequence tagged sites (STSs) derived from whole genome shotgun (WGS) sequences. 523 BAC contigs including 342 independent genes registered in public databases and 85 expressed sequence tags (ESTs), were placed onto the linkage map. We found significant synteny and conserved gene order between B. mori and a nymphalid butterfly, Heliconius melpomene, in four linkage groups (LGs), strongly suggesting that using B. mori as a reference for comparative genomics in Lepidotera is highly feasible.
Key Words: BAC, Bombyx mori, FISH, linkage map, synteny
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