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Fine mapping of two major QTLs conferring resistance to powdery mildew in tomato

Faino, Luigi ; Azizinia, Shiva ; Hassanzadeh, Benyamin Houshyani ; Verzaux, Estelle ; Ercolano, Maria Raffaella ; Visser, Richard G. F. ; Bai, Yuling

Euphytica, 2012-03, Vol.184 (2), p.223-234 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

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Título:
Fine mapping of two major QTLs conferring resistance to powdery mildew in tomato
Autor: Faino, Luigi ; Azizinia, Shiva ; Hassanzadeh, Benyamin Houshyani ; Verzaux, Estelle ; Ercolano, Maria Raffaella ; Visser, Richard G. F. ; Bai, Yuling
Assuntos: Agronomy. Soil science and plant productions ; Biological and medical sciences ; Biomedical and Life Sciences ; Biotechnology ; Chromosome 12 ; chromosome 6 ; Crop diseases ; Crops ; dependent resistance ; disease resistance ; Fundamental and applied biological sciences. Psychology ; Gene mapping ; Genes ; genetic-map ; Genetics and breeding of economic plants ; Genotype & phenotype ; late blight ; Leveillula taurica ; Life Sciences ; linkage ; Lycopersicon esculentum ; Oidium ; oidium-neolycopersici ; Pest resistance ; phytophthora-infestans ; plant defense ; Plant Genetics and Genomics ; Plant pathogens ; Plant Pathology ; Plant Physiology ; Plant populations ; Plant resistance ; Plant Sciences ; potato ; Powdery mildew ; Quantitative trait loci ; Selective breeding ; Solanaceae ; Solanum ; Tomatoes ; Varietal selection. Specialized plant breeding, plant breeding aims
É parte de: Euphytica, 2012-03, Vol.184 (2), p.223-234
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
Descrição: Tomato ( Solanum lycopersicum ) is the most cultivated crop in the Solanaceae family and is a host for Oidium neolycopersici , the cause agent of powdery mildew disease. In wild species of tomato, genes ( Ol - 1 – Ol - 6 ) for monogenic resistance have been identified. Moreover, three quantitative resistance loci (QRLs), namely Ol - qtl1 , Ol - qtl2 and Ol - qtl3 , have been mapped in Solanum neorickii G1.1601. In this work, we developed several advanced backcross populations in order to fine-map these Ol - qtls. Resistant lines harboring individual Ol - qtl were produced and used in recombinant screening. Ten recombinants were identified in chromosomal regions carrying Ol - qtl1s. The recombinant individuals were used to produce recombinant families (RFs). By screening these RFs with molecular markers and testing them with O. neolycopersici , we could localize Ol - qtl1 in a region of about 2.3 Mbp on the long arm of chromosome 6 and Ol - qtl2 in a region of 2.5 Mbp on the short arm of chromosome 12. On the other hand, the presence of Ol - qtl3 locus was not confirmed in this study. The fine-mapping results further demonstrated the co-localization between Ol - qtls and genes for monogenic resistance; the Ol - qtl1 interval contains the Ol - 1 gene and the Ol - qtl2 interval harbors the Lv gene that confers monogenic resistance to Leveillula taurica , another species of tomato powdery mildew.
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês

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Fine mapping of two major QTLs conferring resistance to powdery mildew in tomato

Faino, Luigi ; Azizinia, Shiva ; Hassanzadeh, Benyamin Houshyani ; Verzaux, Estelle ; Ercolano, Maria Raffaella ; Visser, Richard G. F. ; Bai, Yuling

Dordrecht: Springer Netherlands

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