Identification of a major QTL together with several minor additive or epistatic QTLs for resistance to fire blight in apple in two related progenies

Publication Overview
TitleIdentification of a major QTL together with several minor additive or epistatic QTLs for resistance to fire blight in apple in two related progenies
AuthorsCalenge F, Drouet D, Denancé C, Van de Weg WE, Brisset MN, Paulin JP, Durel CE
TypeJournal Article
Journal NameTheoretical and Applied Genetics
Volume111
Issue1
Year2005
Page(s)128-135
CitationCalenge F, Drouet D, Denancé C, Van de Weg WE, Brisset MN, Paulin JP, Durel CE. Identification of a major QTL together with several minor additive or epistatic QTLs for resistance to fire blight in apple in two related progenies. Theoretical and Applied Genetics. 2005 Jun; 111(1):128-135.

Abstract

Although fire blight, caused by the bacterium Erwinia amylovora, is one of the most destructive diseases of apple (Malus x domestica) worldwide, no major, qualitative gene for resistance to this disease has been identified to date in apple. We conducted a quantitative trait locus (QTL) analysis in two F(1) progenies derived from crosses between the cultivars Fiesta and either Discovery or Prima. Both progenies were inoculated in the greenhouse with the same strain of E. amylovora, and the length of necrosis was scored 7 days and 14 days after inoculation. Additive QTLs were identified using the MAPQTL: software, and digenic epistatic interactions, which are an indication of putative epistatic QTLs, were detected by two-way analyses of variance. A major QTL explaining 34.3--46.6% of the phenotypic variation was identified on linkage group (LG) 7 of Fiesta in both progenies at the same genetic position. Four minor QTLs were also identified on LGs 3, 12 and 13. In addition, several significant digenic interactions were identified in both progenies. These results confirm the complex polygenic nature of resistance to fire blight in the progenies studied and also reveal the existence of a major QTL on LG7 that is stable in two distinct genetic backgrounds. This QTL could be a valuable target in marker-assisted selection to obtain new, fire blight-resistant apple cultivars and forms a starting point for discovering the function of the genes underlying such QTLs involved in fire blight control.

Projects
This publication contains information about 1 projects:
Project NameDescription
Fire blight resistance trait-Durel-2005
Features
This publication contains information about 10 features:
Feature NameUniquenameType
resistance to Erwinia amylovoraqREA.PF-chP3.2002.1QTL
resistance to Erwinia amylovoraqREA.PF-chF7.2002.1QTL
resistance to Erwinia amylovoraqREA.PF-chP3.2002QTL
resistance to Erwinia amylovoraqREA.PF-chF7.2002QTL
resistance to Erwinia amylovoraqREA.FD-chD12QTL
resistance to Erwinia amylovoraqREA.FD-chD13QTL
resistance to Erwinia amylovoraqREA.FD-chF3QTL
resistance to Erwinia amylovoraqREA.FD-chF3.2QTL
resistance to Erwinia amylovoraqREA.FD-chF7QTL
resistance to Erwinia amylovoraqREA.FD-chF7.2QTL
Featuremaps
This publication contains information about 4 maps:
Map Name
Apple-FD-F1-2006
Apple-PF-F1-2005
Apple-FD-Fiesta-F1-2005-Durel
Apple-FD-Discovery-F1-2005-Durel
Properties
Additional details for this publication include:
Property NameValue
ISSN0040-5752
Journal AbbreviationTheor. Appl. Genet.
Journal AliasTAG
Journal CountryGermany
LanguageEnglish
Language Abbreng
pISSN0040-5752
Publication Date2005 Jun
Publication ModelPrint-Electronic
Published Location128-135
Cross References
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DatabaseAccession
PMID: PubMedPMID:15856158