The Vh8 locus of a new gene-for-gene interaction between Venturia inaequalis and the wild apple Malus sieversii is closely linked to the Vh2 locus in Malus pumila R12740-7A

V.G.M. Bus, F.N.D. Laurens, W.E. van de Weg, R.L. Rusholme, S.E. Gardiner, H.C.M. Bassett

    Research output: Contribution to journalArticleAcademicpeer-review

    68 Citations (Scopus)

    Abstract

    The wild apple (Malus sieversii) is a large-fruited species from Central Asia, which is used as a source of scab resistance in cultivar breeding. Phytopathological tests with races of Venturia inaequalis were performed to differentiate scab-resistance genes in Malus as well as an avirulence gene in the pathogen. A novel gene-for-gene interaction between V. inaequalis and Malus was identified. The locus of the scab-resistance gene Vh8 is linked with, or possibly allelic to, that of the Vh2 gene in Malus pumila Russian apple R12740-7A, at the lower end of linkage group 2 of Malus. Race 8 isolate NZ188B.2 is compatible with Vh8, suggesting the loss or modification of the complementary AvrVh8 gene, while isolate 1639 overcomes both Vh2 and Vh8, but is incompatible with at least one other gene not detected by any of the other race isolates tested. Our research is the first to differentiate scab-resistance genes in a putative gene cluster in apple with the aid of races of V. inaequalis.
    Original languageEnglish
    Pages (from-to)1035-1049
    JournalNew Phytologist
    Volume166
    Issue number3
    DOIs
    Publication statusPublished - 2005

    Fingerprint

    Venturia inaequalis
    gene interaction
    Malus
    apples
    loci
    Genes
    genes
    complementary genes
    Central Asia
    Malus pumila
    Malus sieversii
    linkage groups
    multigene family
    Multigene Family
    Breeding
    pathogens
    breeding
    cultivars

    Keywords

    • scab resistance gene
    • disease-resistance
    • x-domestica
    • cke wint
    • pathogenicity
    • durability
    • collection
    • crabapples
    • virulence
    • germplasm

    Cite this

    @article{8702d44b089d4b68b68a581ae2b2f6c0,
    title = "The Vh8 locus of a new gene-for-gene interaction between Venturia inaequalis and the wild apple Malus sieversii is closely linked to the Vh2 locus in Malus pumila R12740-7A",
    abstract = "The wild apple (Malus sieversii) is a large-fruited species from Central Asia, which is used as a source of scab resistance in cultivar breeding. Phytopathological tests with races of Venturia inaequalis were performed to differentiate scab-resistance genes in Malus as well as an avirulence gene in the pathogen. A novel gene-for-gene interaction between V. inaequalis and Malus was identified. The locus of the scab-resistance gene Vh8 is linked with, or possibly allelic to, that of the Vh2 gene in Malus pumila Russian apple R12740-7A, at the lower end of linkage group 2 of Malus. Race 8 isolate NZ188B.2 is compatible with Vh8, suggesting the loss or modification of the complementary AvrVh8 gene, while isolate 1639 overcomes both Vh2 and Vh8, but is incompatible with at least one other gene not detected by any of the other race isolates tested. Our research is the first to differentiate scab-resistance genes in a putative gene cluster in apple with the aid of races of V. inaequalis.",
    keywords = "scab resistance gene, disease-resistance, x-domestica, cke wint, pathogenicity, durability, collection, crabapples, virulence, germplasm",
    author = "V.G.M. Bus and F.N.D. Laurens and {van de Weg}, W.E. and R.L. Rusholme and S.E. Gardiner and H.C.M. Bassett",
    year = "2005",
    doi = "10.1111/j.1469-8137.2005.01395.x",
    language = "English",
    volume = "166",
    pages = "1035--1049",
    journal = "New Phytologist",
    issn = "0028-646X",
    publisher = "Wiley",
    number = "3",

    }

    The Vh8 locus of a new gene-for-gene interaction between Venturia inaequalis and the wild apple Malus sieversii is closely linked to the Vh2 locus in Malus pumila R12740-7A. / Bus, V.G.M.; Laurens, F.N.D.; van de Weg, W.E.; Rusholme, R.L.; Gardiner, S.E.; Bassett, H.C.M.

    In: New Phytologist, Vol. 166, No. 3, 2005, p. 1035-1049.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - The Vh8 locus of a new gene-for-gene interaction between Venturia inaequalis and the wild apple Malus sieversii is closely linked to the Vh2 locus in Malus pumila R12740-7A

    AU - Bus, V.G.M.

    AU - Laurens, F.N.D.

    AU - van de Weg, W.E.

    AU - Rusholme, R.L.

    AU - Gardiner, S.E.

    AU - Bassett, H.C.M.

    PY - 2005

    Y1 - 2005

    N2 - The wild apple (Malus sieversii) is a large-fruited species from Central Asia, which is used as a source of scab resistance in cultivar breeding. Phytopathological tests with races of Venturia inaequalis were performed to differentiate scab-resistance genes in Malus as well as an avirulence gene in the pathogen. A novel gene-for-gene interaction between V. inaequalis and Malus was identified. The locus of the scab-resistance gene Vh8 is linked with, or possibly allelic to, that of the Vh2 gene in Malus pumila Russian apple R12740-7A, at the lower end of linkage group 2 of Malus. Race 8 isolate NZ188B.2 is compatible with Vh8, suggesting the loss or modification of the complementary AvrVh8 gene, while isolate 1639 overcomes both Vh2 and Vh8, but is incompatible with at least one other gene not detected by any of the other race isolates tested. Our research is the first to differentiate scab-resistance genes in a putative gene cluster in apple with the aid of races of V. inaequalis.

    AB - The wild apple (Malus sieversii) is a large-fruited species from Central Asia, which is used as a source of scab resistance in cultivar breeding. Phytopathological tests with races of Venturia inaequalis were performed to differentiate scab-resistance genes in Malus as well as an avirulence gene in the pathogen. A novel gene-for-gene interaction between V. inaequalis and Malus was identified. The locus of the scab-resistance gene Vh8 is linked with, or possibly allelic to, that of the Vh2 gene in Malus pumila Russian apple R12740-7A, at the lower end of linkage group 2 of Malus. Race 8 isolate NZ188B.2 is compatible with Vh8, suggesting the loss or modification of the complementary AvrVh8 gene, while isolate 1639 overcomes both Vh2 and Vh8, but is incompatible with at least one other gene not detected by any of the other race isolates tested. Our research is the first to differentiate scab-resistance genes in a putative gene cluster in apple with the aid of races of V. inaequalis.

    KW - scab resistance gene

    KW - disease-resistance

    KW - x-domestica

    KW - cke wint

    KW - pathogenicity

    KW - durability

    KW - collection

    KW - crabapples

    KW - virulence

    KW - germplasm

    U2 - 10.1111/j.1469-8137.2005.01395.x

    DO - 10.1111/j.1469-8137.2005.01395.x

    M3 - Article

    VL - 166

    SP - 1035

    EP - 1049

    JO - New Phytologist

    JF - New Phytologist

    SN - 0028-646X

    IS - 3

    ER -