Identification of wheat gene Sr35 that confers resistance to Ug99 stem rust race group

Cyrille Saintenac, Wenjun Zhang, Andres Salcedo, Matthew N. Rouse, Harold N. Trick, Eduard Akhunov, Jorge Dubcovsky

Research output: Contribution to journalArticlepeer-review

155 Scopus citations

Abstract

Wheat stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is a devastating disease that can cause severe yield losses. A previously uncharacterized Pgt race, designated Ug99, has overcome most of the widely used resistance genes and is threatening major wheat production areas. Here, we demonstrate that the Sr35 gene from Triticum monococcum is a coiled-coil, nucleotide-binding, leucine-rich repeat gene that confers near immunity to Ug99 and related races. This gene is absent in the A-genome diploid donor and in polyploid wheat but is effective when transferred from T. monococcum to polyploid wheat. The cloning of Sr35 opens the door to the use of biotechnological approaches to control this devastating disease and to analyses of the molecular interactions that define the wheat-rust pathosystem.

Original languageEnglish (US)
Pages (from-to)783-786
Number of pages4
JournalScience
Volume341
Issue number6147
DOIs
StatePublished - Jan 1 2013

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