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 402527
Title Survival of pathogens of Brussels sprouts (Brassica oleracea Gemifera group) in crop residues
Author(s) Köhl, J.; Vlaswinkel, M.E.T.; Groenenboom-de Haas, B.H.; Kastelein, P.; Hoof, R.A. van; Wolf, J.M. van der; Krijger, M.C.
Source Plant Pathology 60 (2011)4. - ISSN 0032-0862 - p. 661 - 670.
Department(s) PRI BIOINT Ecological Interactions
Team Schimmels, Onkruiden en Plagen
PRI BIOINT Moleculair Phytopathology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) alternaria-brassicae - mycosphaerella-brassicicola - venturia-inaequalis - primary inoculum - oilseed rape - leaf-litter - debris - soil - management - ascospores
Abstract Mycosphaerella brassicicola (ringspot), Alternaria brassicicola and A. brassicae (dark leaf spot) and Xanthomonas campestris pv. campestris (black spot) can infect leaves of Brussels sprouts resulting in yield losses. Infections of outer leaves of sprouts cause severe losses in quality. Crop residues can be a major primary inoculum source of the pathogens. Their population dynamics were followed in residues of leaves and stalks of crops of Brussels sprouts during 24 months using real-time PCR assays. Leaf residues on the soil surface or buried in soil decomposed within 4 months. However, residues of stalks were present in the field after 24 months. In such residues, M. brassicicola populations increased during the first 2 months, but decreased thereafter and the pathogen was found only occasionally in the second year. Alternaria brassicicola multiplied on stalks exposed on the surface of field soil and was present on such residues after 24 months. Survival was less on residues buried in soil. Alternaria brassicae population increased in stalks exposed on the soil surface during the first months but decreased thereafter under the detection limit. Xanthomonas campestris cv. campestris populations fluctuated in time but 1 × 104 cells mg-1 stalk residue were still found after 24 months. Additionally, the four pathogens were present in residues of 11 commercial rapeseed crops that were analysed. The observed variation in population sizes of the pathogens between individual pieces of crop residues indicates a stochastic spread of pathogens. Unravelling the underlying processes will support the development of novel methods for sustainable disease prevention.
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