Construction of a California condor BAC library and first-generation chicken-condor comparative physical map as an endangered species conservation genomics resource.
To support genomic analysis of the endangered California condor (Gymnogyps californianus), a BAC library (CHORI-262) was generated using DNA from the blood of a female. The library consists of 89,665 recombinant BAC clones providing approximately 14-fold coverage of the presumed approximately 1.48-Gb genome. Taking advantage of recent progress in chicken genomics, we developed a first-generation comparative chicken-condor physical map using an overgo hybridization approach. The overgos were derived from chicken (164 probes) and New World vulture (8 probes) sequences. Screening a 2.8x subset of the total library resulted in 236 BAC-gene assignments with 2.5 positive BAC clones per successful probe. A preliminary comparative chicken-condor BAC-based map included 93 genes. Comparison of selected condor BAC sequences with orthologous chicken sequences suggested a high degree of conserved synteny between the two avian genomes. This work will aid in identification and characterization of candidate loci for the chondrodystrophy mutation to advance genetic management of this disease.
Romanov
Michael N
MN
Genetics Division, Conservation and Research for Endangered Species, Zoological Society of San Diego, Arnold and Mabel Beckman Center for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92027, USA.
Koriabine
Maxim
M
BACPAC Resources Center, Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
Nefedov
Mikhail
M
BACPAC Resources Center, Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
de Jong
Pieter J
PJ
BACPAC Resources Center, Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
Ryder
Oliver A
OA
Genetics Division, Conservation and Research for Endangered Species, Zoological Society of San Diego, Arnold and Mabel Beckman Center for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92027, USA. Electronic address: oryder@ucsd.edu.
D000818:Animals; D002140:California; D002645:Chickens / Q000235:genetics*; D022202:Chromosomes, Artificial, Bacterial; D003247:Conservation of Natural Resources; D015723:Gene Library; D023281:Genomics; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D020161:Physical Chromosome Mapping; D020304:Raptors / Q000235:genetics*; D017422:Sequence Analysis, DNA