Introgression of leaf rust and stripe rust resistance from Sharon goatgrass (Aegilops sharonensis Eig) into bread wheat (Triticum aestivum L.)

• Published in: Genome Vol. 57; no. 6; pp. 309 - 316
• Main Authors: Millet, E, Manisterski, J, Ben-Yehuda, P, Distelfeld, A, Deek, J, Wan, A, Chen, X, Steffenson, B J
• Format: Journal Article
• Language: English
• Published: Canada NRC Research Press 01.06.2014; Canadian Science Publishing NRC Research Press
• Subjects: Aegilops; Aegilops sharonensis; Agricultural production; Basidiomycota - pathogenicity; blé; cartographie à l’aide de marqueurs DArT; Chromosome Mapping; Chromosome Segregation; Chromosomes, Plant; DArT mapping; Disease Resistance; Flowers & plants; Gene Transfer Techniques; Genomes; Israel; leaf rust resistance; Leaves; lignées recombinantes; Minnesota; Mutation; North America; Plant diseases; Plant Diseases - genetics; Plant Diseases - microbiology; Plant Leaves - genetics; Plant Leaves - microbiology; Poaceae - genetics; recombinant lines; Recombination, Genetic; résistance à la rouille brune; résistance à la rouille jaune; stripe rust resistance; Triticum - genetics; Triticum - microbiology; Triticum aestivum; Wheat; United States; Israel; North America; Minnesota; recombinant lines; stripe rust resistance; résistance à la rouille brune; résistance à la rouille jaune; DArT mapping; cartographie à l’aide de marqueurs DArT; leaf rust resistance; wheat; lignées recombinantes; Aegilops sharonensis; blé
• ISSN: 1480-3321; 0831-2796; 1480-3321
• DOI: 10.1139/gen-2014-0004

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.