Journal article
The isolation and mapping of disease resistance gene analogs in maize
Molecular plant-microbe interactions, Vol.11(10), pp.968-978
10/1998
Handle:
https://hdl.handle.net/2376/110772
PMID: 9768514
Abstract
Many of the plant disease resistance genes that have been isolated encode proteins with a putative nucleotide binding site and leucine-rich repeats (NBS-LRR resistance genes). Oligonucleotide primers based on conserved motifs in and around the NBS of known NBS-LRR resistance proteins were used to amplify sequences from maize genomic DNA by polymerase chain reaction (PCR). Eleven classes of non-cross-hybridizing sequences were obtained that had predicted products with high levels of amino acid identity to NBS-LRR resistance proteins. These maize resistance gene analogs (RGAs) and one RGA clone obtained previously from wheat were used as probes to map 20 restriction fragment length polymorphism (RFLP) loci in maize. Some RFLPs were shown to map to genomic regions containing virus and fungus resistance genes. Perfect cosegregation was observed between RGA loci and the rust resistance loci rp1 and rp3. The RGA probe associated with rp1 also detected deletion events in several rp1 mutants. These data strongly suggest that some of the RGA clones may hybridize to resistance genes.
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Details
- Title
- The isolation and mapping of disease resistance gene analogs in maize
- Creators
- N C Collins - Division of Plant Industry, Commonwealth Scientific and Industrial Research Organisation, Canberra, AustraliaC A WebbS SeahJ G EllisS H HulbertA Pryor
- Publication Details
- Molecular plant-microbe interactions, Vol.11(10), pp.968-978
- Academic Unit
- Plant Pathology, Department of
- Publisher
- United States
- Identifiers
- 99900547366601842
- Language
- English
- Resource Type
- Journal article