NDLI: Identification of SNPs linked to eight apple disease resistance loci

Content Provider	Springer Nature Link
Author	Jänsch, Melanie Broggini, Giovanni A. L. Weger, Juliane Bus, Vincent G. M. Gardiner, Susan E. Bassett, Heather Patocchi, Andrea
Copyright Year	2015
Abstract	Although genetic and genomic studies have progressed to a very advanced level in apple, the application of this acquired knowledge for marker-assisted breeding (MAB) remains limited mainly to pyramiding monogenetically inherited resistances against apple scab, powdery mildew and fire blight. Crucial contributing reasons are the uncertainty in map position of some genes and the lack of tightly linked markers suitable for high-throughput analysis (HTA) that reduces the costs of MAB. Single-nucleotide polymorphism (SNP) markers have the potential to resolve these major issues. Here we present the refined map positions of the apple scab resistance genes Rvi2, Rvi4 and Rvi11, and the systematic search for SNPs associated with apple scab (Rvi2, Rvi4, Rvi6, Rvi11, Rvi15), powdery mildew (Pl2) and fire blight (FB_E and FB_MR5) resistances. With the aid of the ‘Golden Delicious’ sequence, several SNPs linked to each of the eight resistances were identified in the genomic regions around the resistance loci previously delimited by simple sequence repeat markers. The specificity of the alleles in coupling with the resistances was determined by screening eight apple genotypes, six of them being founding clones of modern apple cultivars. These SNPs can now be used to develop SNP-based HTA assays for MAB.
Starting Page	1
Ending Page	21
Page Count	21
File Format	PDF
ISSN	13803743
Journal	Molecular Breeding
Volume Number	35
Issue Number	1
e-ISSN	15729788
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-01-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Venturia inaequalis Podosphaera leucotricha Erwinia amylovora Malus × domestica Marker-Assisted Selection Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Molecular Biology Biotechnology Agronomy and Crop Science

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