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Promoter mutations of an essential gene for pollen development result in disease resistance in rice.
Genes Dev
; 20(10): 1250-5, 2006 May 15.
Article
in English
| MEDLINE
| ID: mdl-16648463
ABSTRACT
Disease resistance and sexual reproductive development are generally considered as separate biological processes, regulated by different sets of genes. Here we show that xa13, a recessive allele conferring disease resistance against bacterial blight, one of the most devastating rice diseases worldwide, plays a key role in both disease resistance and pollen development. The dominant allele, Xa13, is required for both bacterial growth and pollen development. Promoter mutations in Xa13 cause down-regulation of expression during host-pathogen interaction, resulting in the fully recessive xa13 that confers race-specific resistance. The recessive xa13 allele represents a new type of plant disease resistance.