Query (optional)   in Class  

GrainGenes Reference Report: TAG-98-226

[Submit comment/correction]

Reference
TAG-98-226
Title
Genomic mapping of defense response genes in wheat
Journal
Theoretical and Applied Genetics
Year
1999
Volume
98
Pages
226-233
Author
[ Hide all but 1 of 8 ]
Li WL
Faris JD
Chittoor JM
Leach JE
Hulbert SH
Liu DJ
Chen PD
Gill BS
Language
English
Abstract
Defense response (DR) genes are a broad class involved in plant defense. In this study we mapped 36 probes representing seven classes of defense response genes. This collection of probes represents genes involved in the hypersensitive response (HR), pathogenesis-related (PR) genes, genes for the flavonoid metabolic pathway, genes encoding proline/glycine-rich proteins, ion channel regulators, lipoxygenase, lectin, and others. Using nullisomic-tetrasomic lines of `Chinese Spring', we were able to assign at least 167 loci to the 21 chromosomes of wheat. Homoeologous group 7 chromosomes possessed the most DR loci followed by group 2. Sixty-two loci were placed on existing genetic linkage maps of wheat. Map locations indicated that the DR gene loci are not randomly distributed throughout the wheat genome, but rather are located in clusters and/or in distal gene-rich regions of the chromosomes. Knowledge of the chromosomal locations and genome organization of DR genes will be useful for candidate gene analysis of quantitative trait loci.
External Databases
https://link.springer.com/content/pdf/10.1007/s001220051062.pdf
https://doi.org/10.1007/s001220051062
Gene
Lpx-A1 (Triticum)
Lpx-A2 (Triticum)
Lpx-B2 (Triticum)
Map Data
Wheat, Synthetic x Opata, DR Genes
Keyword
defense response genes
molecular mapping
resistance
wheat
Image
Defense response genes, group 1 maps
[ Show all 7 ]

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.