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A new view on aphid resistance in melon: the role of Aphis gossypii variability National Institute of Agronomic Research
Boissot, N.; Mistral, P.; Chareyron, V.; Dogimont, C..
Resistance to Aphis gossypii in Cucumis melo has been largely studied but A. gossypii variability has never been considered. Resistance to colonization by A. gossypii, clone NM1, and to non persistent virus transmission by this clone is conferred by a NBS-LRR gene called Vat, isolated in the PI 161375 accession. We investigated resistance to A. gossypii with four clones of A. gossypii that belong to two very distinct genotypes, NM1 and C9. The Vat gene conferred a high level of resistance to a NM1 clone and partial resistance to a C9 clone. Four additive QTL and two pairs of epistatic QTL were detected in a recombinant inbred line population derived from the cross ‘Védrantais’ x PI 161375. Half of them clearly have a specific effect on the acceptance by...
Tipo: Conference Paper Palavras-chave: Cucumis melo; Vat; QTL; Insect resistance; Allelic variability; Disease resistance; Virus vector; Virus transmission; SSR markers; Aphis gossypii.
Ano: 2008 URL: http://hdl.handle.net/2174/207
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Genetic diversity of the melon aphid Aphis gossypii Glover in different melon growing areas of France Inra
Thomas, S.; Mistral, P.; Chareyron, V.; Barral, B.; Boissot, N.; Vanlerberghe-Masutti, F..
Tipo: Conference Paper Palavras-chave: APHIS GOSSYPII; GENE VAT; PUCERON; MICROSATELLITE; DIVERSITE GENETIQUE; INSECTE VECTEUR APHIS GOSSYPII; CUCURBITACEAE; APHIDIDAE; HOMOPTERA.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009429e88f5&uri=/notices/prodinra1/2009/07/
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Marker assisted selection of genes and QTLs for resistance combinations to Aphis gossypii in melon National Institute of Agronomic Research
Thomas, S.; Mistral, P.; Chareyron, V.; Boissot, N..
The Vat gene in melon confers resistance to both aphid colonization and aphid transmission of several viruses. QTLs that provide resistance to aphid were localized on the melon genome. We built genetic allelic combinations with/without the resistant allele at the Vat locus and QTLs. These combinations (homozygous for the resistance loci) had a homogeneous genetic background for 90 % of the genome. Plants with different allelic combinations were infested by two Aphis gossypii genotypes NM1 and C9, and observed for acceptance and biotic potential. The Vat gene reduced the acceptance by both aphid genotypes, but only reduced the biotic potential of NM1. QTLs had a complementary effect on acceptance. To predict the durability of the resistance we plan to...
Tipo: Poster Palavras-chave: Cucumis melo; Quantitative trait loci (QTL); Aphid; Aphis gossypii; Resistance durability; Vat gene.
Ano: 2008 URL: http://hdl.handle.net/2174/251
Registros recuperados: 3
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