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A genetic map of the lettuce downy mildew pathogen, Bremia lactucae, constructed from molecular markers and avirulence genes

DSpice at Indian Institute of Spices Research

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Field Value
 
Creator SICARD, DELPHINE
LEGG, ERIC
BROWN, SARAH
NIRMAL BABU, K
OCHOA, OSWALDO
PADMA, SUDARSHANA
MICHELMORE, RICHARD
 
Date 2011-12-15T22:04:07Z
2011-12-15T22:04:07Z
2003
 
Identifier Fungal Genetics and Biology 39: 16–30(2003)
http://hdl.handle.net/123456789/770
 
Description The genetic map of Bremia lactucae was expanded utilizing 97 F1 progeny derived from a cross between Finnish and Californian
isolates (SF5C82P24). Genetic maps were constructed for each parent utilizing 7 avirulence genes, 83 RFLP markers, and 347
AFLP markers, and a consensus map was constructed from the complete data set. The framework map for SF5 contained 24 linkage
groups distributed over 835 cM; the map for C82P24 contained 21 linkage groups distributed over 606 cM. The consensus map
contained 12 linkage groups with markers from both parents and 24 parent-specific groups. Six avirulence genes mapped to different linkage groups; four were located at the ends of linkage groups. The closest linkages between molecular markers and avirulence genes were 3 cM to Avr4 and 1 cM to Avr7. Mating type seemed to be determined by a single locus, where the heterozygote determined the B2 type and the homozygous recessive genotype determined the B1 type.
 
Format 273799 bytes
application/pdf
 
Language en
 
Publisher Elsevier
 
Subject Bremia lactucae
Oomycete
Plant pathogen
Downy mildew
Linkage map
Mating type
Avirulence gene
AFLP
 
Title A genetic map of the lettuce downy mildew pathogen, Bremia lactucae, constructed from molecular markers and avirulence genes
 
Type Article