Development and mapping of DArT markers within the Festuca - Lolium complex

<p>Abstract</p> <p>Background</p> <p>Grasses are among the most important and widely cultivated plants on Earth. They provide high quality fodder for livestock, are used for turf and amenity purposes, and play a fundamental role in environment protection. Among cultivated grasses, species within the <it>Festuca-Lolium </it>complex predominate, especially in temperate regions. To facilitate high-throughput genome profiling and genetic mapping within the complex, we have developed a Diversity Arrays Technology (DArT) array for five grass species: <it>F. pratensis</it>, <it>F. arundinacea</it>, <it>F. glaucescens</it>, <it>L. perenne </it>and <it>L. multiflorum</it>.</p> <p>Results</p> <p>The DArTFest array contains 7680 probes derived from methyl-filtered genomic representations. In a first marker discovery experiment performed on 40 genotypes from each species (with the exception of <it>F. glaucescens </it>for which only 7 genotypes were used), we identified 3884 polymorphic markers. The number of DArT markers identified in every single genotype varied from 821 to 1852. To test the usefulness of DArTFest array for physical mapping, DArT markers were assigned to each of the seven chromosomes of <it>F. pratensis </it>using single chromosome substitution lines while recombinants of <it>F. pratensis </it>chromosome 3 were used to allocate the markers to seven chromosome bins.</p> <p>Conclusion</p> <p>The resources developed in this project will facilitate the development of genetic maps in <it>Festuca </it>and <it>Lolium</it>, the analysis on genetic diversity, and the monitoring of the genomic constitution of the <it>Festuca × Lolium </it>hybrids. They will also enable marker-assisted selection for multiple traits or for specific genome regions.</p

Acoustic Variability and Individual Distinctiveness in the Vocal Repertoire of Red-Capped Mangabeys (Cercocebus torquatus)

International audienceAcoustic variability and individual distinctiveness of vocal signals are expected to vary with both their communicative function and the need for individual recognition during social interactions. So far, few attempts have been made to comparatively study these features across the different call types within a species' vocal repertoire. We collected recordings of the six most common call types from 14 red-capped mangabeys (Cercocebus torquatus) to assess intra- and interindividual acoustic variability, using a range of temporal and frequency parameters. Acoustic variability was highest in contact and threat calls, intermediate in food calls, and lowest in loud and alarm calls. Individual distinctiveness was high in contact, threat, loud and alarm calls, and low in food calls. In sum, calls mediating intragroup social interactions were structurally most variable and individually most distinctive, highlighting the key role that social factors must have played in the evolution of the vocal repertoire in this species. We discuss these findings in light of existing hypotheses of acoustic variability in primate vocal behavior

Development and mapping of DArT markers within the Festuca - Lolium complex

Background Grasses are among the most important and widely cultivated plants on Earth. They provide high quality fodder for livestock, are used for turf and amenity purposes, and play a fundamental role in environment protection. Among cultivated grasses, species within the Festuca-Lolium complex predominate, especially in temperate regions. To facilitate high-throughput genome profiling and genetic mapping within the complex, we have developed a Diversity Arrays Technology (DArT) array for five grass species: F. pratensis, F. arundinacea, F. glaucescens, L. perenne and L. multiflorum. Results The DArTFest array contains 7680 probes derived from methyl-filtered genomic representations. In a first marker discovery experiment performed on 40 genotypes from each species (with the exception of F. glaucescens for which only 7 genotypes were used), we identified 3884 polymorphic markers. The number of DArT markers identified in every single genotype varied from 821 to 1852. To test the usefulness of DArTFest array for physical mapping, DArT markers were assigned to each of the seven chromosomes of F. pratensis using single chromosome substitution lines while recombinants of F. pratensis chromosome 3 were used to allocate the markers to seven chromosome bins. Conclusion The resources developed in this project will facilitate the development of genetic maps in Festuca and Lolium, the analysis on genetic diversity, and the monitoring of the genomic constitution of the Festuca × Lolium hybrids. They will also enable marker-assisted selection for multiple traits or for specific genome regions.This article is published as Kopecký, David, Jan Bartoš, Adam J. Lukaszewski, James H. Baird, Vladimír Černoch, Roland Kölliker, Odd Arne Rognli et al. "Development and mapping of DArT markers within the Festuca-Lolium complex." BMC genomics 10, no. 1 (2009): 473. doi:10.1186/1471-2164-10-473, Posted with permission.</p