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ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #317374
Title: Introgression of leaf rust and stripe rust resistance from Sharon goatgrass (Aegilops sharonensis Eig) into bread wheat (Triticum aestivum L.)

Author
item MILLET, E - Tel Aviv University
item MANISTERSKI, J - Tel Aviv University
item BEN-YEHUDA, P - Tel Aviv University
item DISTELFELD, A - Tel Aviv University
item DEEK, J - Tel Aviv University
item WAN, A - Washington State University
item Chen, Xianming
item STEFFENSON, B - University Of Minnesota

Submitted to: Genome
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/14/2014
Publication Date: 8/20/2014
Citation: Millet, E., Manisterski, J., Ben-Yehuda, P., Distelfeld, A., Deek, J., Wan, A., Chen, X., Steffenson, B.J. 2014. Introgression of leaf rust and stripe rust resistance from Sharon goatgrass (Aegilops sharonensis Eig) into bread wheat (Triticum aestivum L.). Genome. 57(6):309-316.

Interpretive Summary: Leaf rust and stripe rust are devastating wheat diseases, causing significant yield losses in many regions of the world. The use of resistant varieties is the most efficient way to protect wheat crops from these diseases. Sharon goatgrass (Aegilops sharonensis or AES), is a wild relative of wheat, that is resistant to leaf and stripe rust resistance. We crossed the resistant AES accession TH548 to wheat to obtain resistant wheat recombinant lines carrying AES chromosome segments in the genetic background of the spring wheat cultivar Galil. These recombinant lines were found resistant to highly virulent races of the leaf and stripe rust pathogens in Israel and the United States. Molecular marker analysis of the different recombinant lines revealed different lengths of AES segments on wheat chromosome 6B, which indicates the location of both resistance genes. These lines could be useful sources for developing wheat varieties with resistance to both leaf and stripe rusts.

Technical Abstract: Leaf rust and stripe rust are devastating wheat diseases, causing significant yield losses in many regions of the world. The use of resistant varieties is the most efficient way to protect wheat crops from these diseases. Sharon goatgrass (Aegilops sharonensis or AES), which is a diploid wild relative of wheat, exhibits a high frequency of leaf and stripe rust resistance. We used the resistant AES accession TH548 and induced homoeologous recombination by the ph1b allele to obtain resistant wheat recombinant lines carrying AES chromosome segments in the genetic background of the spring wheat cultivar Galil. The gametocidal effect from AES was overcome by using an “anti-gametocidal” wheat mutant. These recombinant lines were found resistant to highly virulent races of the leaf and stripe rust pathogens in Israel and the United States. Molecular DArT analysis of the different recombinant lines revealed different lengths of AES segments on wheat chromosome 6B, which indicates the location of both resistance genes.