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  • 1
    ISSN: 1617-4623
    Keywords: Key wordsLycopersicon esculentum ; Cladosporium fulvum ; Pathogenicity ; CAPS markers ; Hcr9
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A gene has been identified in tomato, which confers resistance to Cladosporium fulvum through recognition of the pathogenicity factor ECP2. Segregation analysis of F2 and F3 populations showed monogenic dominant inheritance, as for previously reported Cf resistances. The gene has been designated Cf-ECP2. Using several mapping populations, Cf-ECP2 was accurately mapped on chromosome 1, 7.7 cM proximal to TG236 and 6.0 cM distal to TG184. Although Cf-ECP2 is linked to Cf-4, it is not located in the Hcr9 cluster “Milky Way”. Therefore, Cf-ECP2 is the first functional Cf homologue on chromosome 1 that does not belong to this Hcr9 cluster. No recombination events between Cf-ECP2 and CT116 have been observed in three populations tested, representing 282 individuals. The low value for the physical distance per cM around CT116 reported previously and the high probability that Cf-ECP2 is also a member of a Hcr9 cluster will facilitate cloning of the locus.
    Type of Medium: Electronic Resource
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