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  • 1
    ISSN: 1573-6857
    Keywords: birds ; sequence tagged sites ; single nucleotide polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Short of a complete genomic DNA sequence, sequence tagged sites (STSs) have emerged as major genomic reagents for the genetic analysis of little-studied ecologically and agriculturally important organisms. Here, we report STS developed for the turkey (Meleagris gallopavo), guinea fowl (Numidea meleagris), Japanese quail (Coturnix coturnix) and pigeon using primers specific for reference DNA sequences of two chicken (Gallus gallus) genes, aggrecan (agc1) and type X collagen (col10). Additional STSs were also developed for turkey, quail and chicken using primers specific for the human apobec-1 gene. The total length of the STSs developed was 5990, 2522, 4127, 1539 and 6600 bp for the turkey, guinea fowl, Japanese quail, pigeon and chicken, respectively. Based on splice site consensus GT and AG sequences, four of the seven agc1-based chicken STS appear to contain introns. The human gene-based STSs showed no significant sequence identity with the reference GenBank sequences. Maximum likelihood, maximum parsimony and neighbour-joining analysis of an agc1-based STS that was common to all five species showed phylogenetic relationships consistent with those previously defined using mitochondria DNA sequences and nuclear gene restriction maps. Additionally, several putative single nucleotide polymorphisms (SNPs) were detected within the STSs, including eight in the turkey, two in the quail, and two in the chicken when multiple sequences were evaluated from each species. This report describes new STSs that are resources for genetic and physical mapping and genome analysis within and among avian species. These resources should further aid in our understanding of the biology of agriculturally important but little-studied guinea fowl and turkey.
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  • 2
    ISSN: 1573-6857
    Keywords: African grey parrot ; sequence tagged sites ; single nucleotide polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Comparative genome analysis promises to provide an insight into avian species that have been very little studied. To test the feasibility of this approach, we investigated the use of heterologous primers to generate single nucleotide polymorphisms (SNP) in the African grey parrot, Psittacus erythacus, using primers specific for chicken and turkey DNA fragments. Three of the primers were specific for three expressed sequence tagged sites in the turkey and the fourth for a chicken proteoglycan core protein-like DNA sequence. A total of about 2200 bp of the parrot genome was evaluated for DNA sequence variation. Seven SNPs were identified and confirmed by Mendelian segregation. The frequency distribution of the most common nucleotide at each SNP locus in an unrelated group of parrots ranged from 0.84 to 0.97. The percent similarity of each parrot sequence to the reference sequence was inconsistent and ranged from zero to 100%. The primers as well as the nucleotide variants described represent valuable resources for genetic analysis in the parrot.
    Type of Medium: Electronic Resource
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