Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/15/2003
Publication Date: 3/28/2003
Citation: Chen, M., Fellers, J.P., Liu, X., Matthews, A.R. 2003. Elicitor genes from hessian fly salivary glands. Meeting Abstract.
Technical Abstract: More than 70 families of genes that encode proteins with secretion signals have been identified and characterized from Hessian fly [Mayetiola destructor (Say)] salivary glands. Structural analysis revealed that these elicitor genes are clustered within short chromosome regions, forming functional genomic units similar to pathogenicity islands found in Human and plant pathogens. All these genes are either exclusively or predominantly expressed in the salivary glands of the first instar larvae, a critical stage that determines whether an interaction with a specific wheat cultivar is compatible or incompatible. The unusual structure, unique expression profile, and highly polymorphic nature of these elicitor genes suggest that they are likely the determinants of virulent/avirulent phenotypes associated with different biotypes against different resistance genes.