Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 409427
Title New broad-spectrum resistance to septoria tritici blotch derived from synthetic hexaploid wheat
Author(s) Tabib Ghaffary, M.S.; Faris, J.D.; Friesen, T.L.; Visser, R.G.F.; Lee, T.A.J. van der; Robert, O.; Kema, G.H.J.
Source Theoretical and Applied Genetics 124 (2012)1. - ISSN 0040-5752 - p. 125 - 142.
DOI http://dx.doi.org/10.1007/s00122-011-1692-7
Department(s) Laboratory of Plant Breeding
Biointeracties and Plant Health
PRI BIOINT Moleculair Phytopathology
EPS-2
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) mycosphaerella graminicola pathosystem - quantitative trait loci - aegilops-tauschii coss. - stagonospora nodorum blotch - multiple fungal pathogens - genetic-linkage map - bread wheat - durable resistance - rust resistance - common wheat
Abstract Septoria tritici blotch (STB), caused by the ascomycete Mycosphaerella graminicola, is one of the most devastating foliar diseases of wheat. We screened five synthetic hexaploid wheats (SHs), 13 wheat varieties that represent the differential set of cultivars and two susceptible checks with a global set of 20 isolates and discovered exceptionally broad STB resistance in SHs. Subsequent development and analyses of recombinant inbred lines (RILs) from a cross between the SH M3 and the highly susceptible bread wheat cv. Kulm revealed two novel resistance loci on chromosomes 3D and 5A. The 3D resistance was expressed in the seedling and adult plant stages, and it controlled necrosis (N) and pycnidia (P) development as well as the latency periods of these parameters. This locus, which is closely linked to the microsatellite marker Xgwm494, was tentatively designated Stb16q and explained from 41 to 71% of the phenotypic variation at seedling stage and 28-31% in mature plants. The resistance locus on chromosome 5A was specifically expressed in the adult plant stage, associated with SSR marker Xhbg247, explained 12-32% of the variation in disease, was designated Stb17, and is the first unambiguously identified and named QTL for adult plant resistance to M. graminicola. Our results confirm that common wheat progenitors might be a rich source of new Stb resistance genes/QTLs that can be deployed in commercial breeding programs
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