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Michael N. Romanov - One of the best experts on this subject based on the ideXlab platform.

  • genome wide association studies targeting the yield of extraembryonic fluid and production traits in russian white chickens
    BMC Genomics, 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p < 5.16*10− 5) were found for YEF, AFE, BW and EW. Moreover, on chromosome 2, an association with the white DOCDC was found where there is an linkage disequilibrium block of SNPs including genes that are responsible not for colour, but for immune resistance. The obtained GWAS data can be used to explore the genetics of immunity and carry out selection for increasing YEF for SPF eggs production.

  • Genome-wide association studies targeting the yield of extraembryonic fluid and production traits in Russian White chickens
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    Abstract Background The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. Results We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p 

Hansgeorg Sahl - One of the best experts on this subject based on the ideXlab platform.

  • identification of defensin encoding genes of picea glauca characterization of pgd5 a conserved spruce defensin with strong antifungal activity
    BMC Plant Biology, 2012
    Co-Authors: Pere Picart, Anna Maria Pirttila, Dora Raventos, Hanshenrik Kristensen, Hansgeorg Sahl
    Abstract:

    Plant defensins represent a major innate immune protein superfamily that displays strong inhibitory effects on filamentous fungi. The total number of plant defensins in a conifer species is unknown since there are no sequenced conifer genomes published, however the genomes of several angiosperm species provide an insight on the diversity of plant defensins. Here we report the identification of five new defensin-encoding genes from the Picea glauca genome and the characterization of two of their gene products, named PgD5 and endopiceasin. Screening of a P. glauca EST database with sequences of known plant defensins identified four genes with homology to the known P. glauca defensin PgD1, which were designated PgD2-5. Whereas in the mature PgD2-4 only 7–9 amino acids differed from PgD1, PgD5 had only 64% sequence identity. PgD5 was amplified from P. glauca genomic DNA by PCR. It codes for a precursor of 77-amino acid that is fully conserved within the Picea genus and has similarity to plant defensins. Recombinant PgD5, produced in Escherichia coli, had a molecular mass of 5.721 kDa, as determined by mass spectrometry. The PgD5 peptide exhibited strong antifungal activity against several phytopathogens without any effect on the morphology of the treated fungal hyphae, but strongly inhibited hyphal elongation. A SYTOX uptake assay suggested that the inhibitory activity of PgD5 could be associated with altering the permeability of the fungal membranes. Another completely unrelated defensin gene was identified in the EST library and named endopiceasin. Its gene codes for a 6-cysteine peptide that shares high similarity with the fungal defensin plectasin. Screening of a P. glauca EST database resulted in the identification of five new defensin-encoding genes. PgD5 codes for a plant defensin that displays non-morphogenic antifungal activity against the phytopathogens tested, probably by altering membrane permeability. PgD5 has potential for application in the plant Biotechnology Sector. Endopiceasin appears to derive from an endo- or epiphytic fungal strain rather than from the plant itself.

Andrei A. Kudinov - One of the best experts on this subject based on the ideXlab platform.

  • genome wide association studies targeting the yield of extraembryonic fluid and production traits in russian white chickens
    BMC Genomics, 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p < 5.16*10− 5) were found for YEF, AFE, BW and EW. Moreover, on chromosome 2, an association with the white DOCDC was found where there is an linkage disequilibrium block of SNPs including genes that are responsible not for colour, but for immune resistance. The obtained GWAS data can be used to explore the genetics of immunity and carry out selection for increasing YEF for SPF eggs production.

  • Genome-wide association studies targeting the yield of extraembryonic fluid and production traits in Russian White chickens
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    Abstract Background The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. Results We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p 

Pere Picart - One of the best experts on this subject based on the ideXlab platform.

  • identification of defensin encoding genes of picea glauca characterization of pgd5 a conserved spruce defensin with strong antifungal activity
    BMC Plant Biology, 2012
    Co-Authors: Pere Picart, Anna Maria Pirttila, Dora Raventos, Hanshenrik Kristensen, Hansgeorg Sahl
    Abstract:

    Plant defensins represent a major innate immune protein superfamily that displays strong inhibitory effects on filamentous fungi. The total number of plant defensins in a conifer species is unknown since there are no sequenced conifer genomes published, however the genomes of several angiosperm species provide an insight on the diversity of plant defensins. Here we report the identification of five new defensin-encoding genes from the Picea glauca genome and the characterization of two of their gene products, named PgD5 and endopiceasin. Screening of a P. glauca EST database with sequences of known plant defensins identified four genes with homology to the known P. glauca defensin PgD1, which were designated PgD2-5. Whereas in the mature PgD2-4 only 7–9 amino acids differed from PgD1, PgD5 had only 64% sequence identity. PgD5 was amplified from P. glauca genomic DNA by PCR. It codes for a precursor of 77-amino acid that is fully conserved within the Picea genus and has similarity to plant defensins. Recombinant PgD5, produced in Escherichia coli, had a molecular mass of 5.721 kDa, as determined by mass spectrometry. The PgD5 peptide exhibited strong antifungal activity against several phytopathogens without any effect on the morphology of the treated fungal hyphae, but strongly inhibited hyphal elongation. A SYTOX uptake assay suggested that the inhibitory activity of PgD5 could be associated with altering the permeability of the fungal membranes. Another completely unrelated defensin gene was identified in the EST library and named endopiceasin. Its gene codes for a 6-cysteine peptide that shares high similarity with the fungal defensin plectasin. Screening of a P. glauca EST database resulted in the identification of five new defensin-encoding genes. PgD5 codes for a plant defensin that displays non-morphogenic antifungal activity against the phytopathogens tested, probably by altering membrane permeability. PgD5 has potential for application in the plant Biotechnology Sector. Endopiceasin appears to derive from an endo- or epiphytic fungal strain rather than from the plant itself.

Elena S. Fedorova - One of the best experts on this subject based on the ideXlab platform.

  • genome wide association studies targeting the yield of extraembryonic fluid and production traits in russian white chickens
    BMC Genomics, 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p < 5.16*10− 5) were found for YEF, AFE, BW and EW. Moreover, on chromosome 2, an association with the white DOCDC was found where there is an linkage disequilibrium block of SNPs including genes that are responsible not for colour, but for immune resistance. The obtained GWAS data can be used to explore the genetics of immunity and carry out selection for increasing YEF for SPF eggs production.

  • Genome-wide association studies targeting the yield of extraembryonic fluid and production traits in Russian White chickens
    'Springer Science and Business Media LLC', 2019
    Co-Authors: Andrei A. Kudinov, Natalia V. Dementieva, Olga V. Mitrofanova, Olga I. Stanishevskaya, Elena S. Fedorova, Tatiana A. Larkina, Arina I. Mishina, Kirill V. Plemyashov, Darren K. Griffin, Michael N. Romanov
    Abstract:

    Abstract Background The Russian White is a gene pool breed, registered in 1953 after crossing White Leghorns with local populations and, for 50 years, selected for cold tolerance and high egg production (EL). The breed has great potential in meeting demands of local food producers, commercial farmers and Biotechnology Sector of specific pathogen-free (SPF) eggs, the former valuing the breed for its egg weight (EW), EL, age at first egg (AFE), body weight (BW), and the latter for its yield of extraembryonic fluid (YEF) in 12.5-day embryos, ratio of extraembryonic fluid to egg weight, and embryo mass. Moreover, its cold tolerance has been presumably associated with day-old chick down colour (DOCDC) – white rather than yellow, the genetic basis of these traits being however poorly understood. Results We undertook genome-wide association studies (GWASs) for eight performance traits using single nucleotide polymorphism (SNP) genotyping of 146 birds and an Illumina 60KBeadChip. Several suggestive associations (p