| Literature DB >> 15342531 |
Shavannor M Smith1, Anthony J Pryor, Scot H Hulbert.
Abstract
The maize Rp1 rust resistance locus is a complex consisting of a family of closely related resistance genes. The number of Rp1 paralogs in different maize lines (haplotypes) varied from a single gene in some stocks of the inbred A188 to >50 genes in haplotypes carrying the Rp1-A and Rp1-H specificities. The sequences of paralogs in unrelated haplotypes differ, indicating that the genetic diversity of Rp1-related genes is extremely broad in maize. Two unrelated haplotypes with five or nine paralogs had identical resistance phenotypes (Rp1-D) encoded in genes that differed by three nucleotides resulting in a single amino acid substitution. Genes in some haplotypes are more similar to each other than to any of the genes in other haplotypes indicating that they are evolving in a concerted fashion. Copyright 2004 Genetics Society of AmericaEntities:
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Year: 2004 PMID: 15342531 PMCID: PMC1471013 DOI: 10.1534/genetics.104.029371
Source DB: PubMed Journal: Genetics ISSN: 0016-6731 Impact factor: 4.562