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QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum x S. arcanum cross.
Theor Appl Genet. 2007 Feb; 114(3):439-50.TA

Abstract

Alternaria solani (Ellis and Martin) Sorauer, the causal agent of early blight (EB) disease, infects aerial parts of tomato at both seedling and adult plant stages. Resistant cultivars would facilitate a sustainable EB management. EB resistance is a quantitatively expressed character, a fact that has hampered effective breeding. In order to identify and estimate the effect of genes conditioning resistance to EB, a quantitative trait loci (QTL) mapping study was performed in F2 and F3 populations derived from the cross between the susceptible Solanum lycopersicum (syn. Lycopersicon esculentum) cv. 'Solentos' and the resistant Solanum arcanum (syn. Lycopersicon peruvianum) LA2157 and genotyped with AFLP, microsatellite and SNP markers. Two evaluation criteria of resistance were used: measurements of EB lesion growth on the F2 plants in glasshouse tests and visual ratings of EB severity on foliage of the F3 lines in a field test. A total of six QTL regions were mapped on chromosomes 1, 2, 5-7, and 9 with LOD scores ranging from 3.4 to 17.5. Three EB QTL also confer resistance to stem lesions in the field, which has not been reported before. All QTL displayed significant additive gene action; in some cases a dominance effect was found. Additive x additive epistatic interactions were detected between one pair of QTL. For two QTL, the susceptible parent contributed resistance alleles to both EB and stem lesion resistance. Three of the QTL showed an effect in all tests despite methodological and environmental differences.

Authors+Show Affiliations

Plant Research International, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17093974

Citation

Chaerani, R, et al. "QTL Identification for Early Blight Resistance (Alternaria Solani) in a Solanum Lycopersicum X S. Arcanum Cross." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 114, no. 3, 2007, pp. 439-50.
Chaerani R, Smulders MJ, van der Linden CG, et al. QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum x S. arcanum cross. Theor Appl Genet. 2007;114(3):439-50.
Chaerani, R., Smulders, M. J., van der Linden, C. G., Vosman, B., Stam, P., & Voorrips, R. E. (2007). QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum x S. arcanum cross. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 114(3), 439-50.
Chaerani R, et al. QTL Identification for Early Blight Resistance (Alternaria Solani) in a Solanum Lycopersicum X S. Arcanum Cross. Theor Appl Genet. 2007;114(3):439-50. PubMed PMID: 17093974.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum x S. arcanum cross. AU - Chaerani,R, AU - Smulders,M J M, AU - van der Linden,C G, AU - Vosman,B, AU - Stam,P, AU - Voorrips,R E, Y1 - 2006/11/09/ PY - 2005/11/24/received PY - 2006/10/21/accepted PY - 2006/11/10/pubmed PY - 2007/3/29/medline PY - 2006/11/10/entrez SP - 439 EP - 50 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor. Appl. Genet. VL - 114 IS - 3 N2 - Alternaria solani (Ellis and Martin) Sorauer, the causal agent of early blight (EB) disease, infects aerial parts of tomato at both seedling and adult plant stages. Resistant cultivars would facilitate a sustainable EB management. EB resistance is a quantitatively expressed character, a fact that has hampered effective breeding. In order to identify and estimate the effect of genes conditioning resistance to EB, a quantitative trait loci (QTL) mapping study was performed in F2 and F3 populations derived from the cross between the susceptible Solanum lycopersicum (syn. Lycopersicon esculentum) cv. 'Solentos' and the resistant Solanum arcanum (syn. Lycopersicon peruvianum) LA2157 and genotyped with AFLP, microsatellite and SNP markers. Two evaluation criteria of resistance were used: measurements of EB lesion growth on the F2 plants in glasshouse tests and visual ratings of EB severity on foliage of the F3 lines in a field test. A total of six QTL regions were mapped on chromosomes 1, 2, 5-7, and 9 with LOD scores ranging from 3.4 to 17.5. Three EB QTL also confer resistance to stem lesions in the field, which has not been reported before. All QTL displayed significant additive gene action; in some cases a dominance effect was found. Additive x additive epistatic interactions were detected between one pair of QTL. For two QTL, the susceptible parent contributed resistance alleles to both EB and stem lesion resistance. Three of the QTL showed an effect in all tests despite methodological and environmental differences. SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/17093974/QTL_identification_for_early_blight_resistance__Alternaria_solani__in_a_Solanum_lycopersicum_x_S__arcanum_cross_ L2 - https://dx.doi.org/10.1007/s00122-006-0442-8 DB - PRIME DP - Unbound Medicine ER -