caa a22 4500 467929130 CHVBK 20180406152938.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s10658-005-2233-5 doi (NATIONALLICENCE)springer-10.1007/s10658-005-2233-5 World-Wide Importance of Phoma Stem Canker ( Leptosphaeria maculans and L. biglobosa ) on Oilseed Rape ( Brassica napus ) [Elektronische Daten] [B. Fitt, H. Brun, M. Barbetti, S. Rimmer] Phoma stem canker is an internationally important disease of oilseed rape (Brassica napus, canola, rapeseed), causing serious losses in Europe, Australia and North America. UK losses of €56M per season are estimated using national disease survey data and a yield loss formula. Phoma stem canker pathogen populations comprise two main species, Leptosphaeria maculans, associated with damaging stem base cankers, and Leptosphaeria biglobosa, often associated with less damaging upper stem lesions. Both major gene and quantitative trait loci mediated resistance to L. maculans have been identified in B. napus, but little is known about resistance to L. biglobosa. Leptosphaeria maculans, which has spread into areas in North America and eastern Europe where only L. biglobosa was previously identified, now poses a threat to large areas of oilseed rape production in Asia. Epidemics are initiated by air-borne ascospores; major gene resistance to initial infection by L. maculans operates in the leaf lamina of B. napus. It is not clear whether the quantitative trait loci involved in the resistance to the pathogen that can be assessed only at the end of the season operate in the leaf petioles or stems. In countries where serious phoma stem canker epidemics occur, a minimum standard for resistance to L. maculans is included in national systems for registration of cultivars. This review provides a background to a series of papers on improving strategies for managing B. napus resistance to L. maculans, which is a model system for studying genetic interactions between hemi-biotrophic pathogens and their hosts. Springer, 2006 blackleg nationallicence durable resistance nationallicence host-pathogen genetics nationallicence invasive species nationallicence resistance genes nationallicence species co-existence nationallicence Fitt B. Rothamsted Research, AL5 2JQ, Harpenden, Herts, UK aut Brun H. INRA, UMR Bi03P, Domaine de la Motte, BP 35327, F-35653, Le Rheu Cedex, France aut Barbetti M. School of Plant Biology, University of Western Australia, 35 Stirling Highway, WA 6009, Crawley, Australia aut Rimmer S. Agriculture and Agri-Food Canada, Saskatoon Research Centre, 107 Science Place, S7N OX2, Saskatoon, Canada aut European Journal of Plant Pathology Kluwer Academic Publishers 114/1(2006-01-01), 3-15 0929-1873 114:1<3 2006 114 10658 https://doi.org/10.1007/s10658-005-2233-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10658-005-2233-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fitt B. Rothamsted Research, AL5 2JQ, Harpenden, Herts, UK aut NATIONALLICENCE 700 1- Brun H. INRA, UMR Bi03P, Domaine de la Motte, BP 35327, F-35653, Le Rheu Cedex, France aut NATIONALLICENCE 700 1- Barbetti M. School of Plant Biology, University of Western Australia, 35 Stirling Highway, WA 6009, Crawley, Australia aut NATIONALLICENCE 700 1- Rimmer S. Agriculture and Agri-Food Canada, Saskatoon Research Centre, 107 Science Place, S7N OX2, Saskatoon, Canada aut NATIONALLICENCE 773 0- European Journal of Plant Pathology Kluwer Academic Publishers 114/1(2006-01-01), 3-15 0929-1873 114:1<3 2006 114 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer