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GrainGenes Reference Report: TAG-103-758

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Reference	TAG-103-758
Title	Chromosomal location of a gene for resistance to septoria tritici blotch (Mycosphaerella graminicola) in the hexaploid wheat 'Synthetic 6x'
Journal	Theoretical and Applied Genetics
Year	2001
Volume	103
Pages	758-764
Author	Arraiano LS Worland AJ Ellerbrook C Brown JKM
Abstract	Summary: Septoria tritici blotch, caused by the fungus Mycosphaerella graminicola, is currently the major foliar disease of wheat world-wide, and new sources of resistance and knowledge about the genetics of resistance are needed to improve breeding for resistance to this disease. Sears's 'Synthetic 6x' hexaploid wheat, derived from a hybrid of Triticum dicoccoides and Triticum tauschii, was resistant to 12 of 13 isolates of M. graminicola tested. Chromosome 7D of 'Synthetic 6x' was identified as carrying resistance to all 12 isolates in tests of seedlings of inter-varietal chromosome substitution lines of 'Synthetic 6x' into 'Chinese Spring' and to two isolates in tests of adult plants. A septoria tritici blotch resistance gene, named Stb5, was identified using the M. graminicola isolate IPO94269 and mapped on the short arm of chromosome 7D, near the centromere, in a population of single homozygous chromosome-recombinant lines for the 7D chromosome
External Databases	http://link.springer-ny.com/link/service/journals/00122/bibs/1103005/11030758.htm
Gene	Stb5 (Triticum)
Locus	Stb5
Keyword	[ Hide all but 1 of 51 ] adult aegilops squarrosa blotch bread wheat breeding breeding for resistance centromere chinese chinese spring chromosomal location chromosome chromosome substitution dicoccoides disease disease resistance fungus gene genetic mapping graminicola hexaploid hexaploid wheat homozygous hybrid isolate knowledge leaf blotch mycosphaerella graminicola nodorum population powdery mildew resistance resistance gene resistant rust resistance seedling septoria tritici septoria tritici blotch single-gene source sources of resistance spring spring wheat stb5 substitution substitution lines synthetic hexaploid wheat tauschii tritici triticum triticum dicoccoides triticum tauschii

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