Spatial distribution of Fusarium head blight and associated mycotoxins in wheat fields
Fusarium head blight, spatial distribution, deoxynivalenol, mycotoxins, wheat
Describtion - Fusarium head blight (FHB) is one of the most important diseases in wheat worldwide. Several Fusarium species are able to produce characteristic ear symptoms; however, often a complex of species has been identified in one field, including F. graminearum, F. culmorum, F. avenaceum, F. poae, F. tricinctum, F. equiseti, F. sporotrichioides. FHB may cause grain yield loss up to 70%. Some Fusarium species are able to produce mycotoxins, secondary fungal metabolites, some of them more toxic than others, that represent a high risk to human and animal health. Thus the loss in grain quality can be more important than yield losses. Different ways of spore dispersal within the crop canopy and differences in the ability to produce mycotoxins lead to various spatial distributions of Fusarium species and the associated mycotoxins in the field. Understanding the spatiotemporal dynamics of the pathogens in the field is an important prerequisite to manage FHB disease of wheat effectively. In this study wheat fileds are sampled in a grid. Frequency of infected kernels and amount of fungal biomass at each sampling is measured. Thy mycotoxin contamination is examined with a multi mycotoxin method at INFU (University of Dortmund). Results are mapped in a GIS und analysed spatially with the SADIE tool.
Schlang, N., M. Mezzalama, E. Duveiller, J. Lewis, N. Lozano, J. Segura, F. Lopez and J. Murakami (2008): Evaluation in Mexico of Type-I and Type-II resistance in spring wheat lines candidates for targeted crosses against scab. Cereal Research Communications 36 (Supp. B): 163-165
Schlang, N., U. Steiner, H.-W. Dehne, J. Murakami, E. Duveiller, and E.-C. Oerke (2008): Spatial distribution of Fusarium head blight pathogens and associated mycotoxins in wheat fields. Cereal Research Communications 26 (Supp. B): 573-577
Participation in 'Fusarium laboratory workshop' (Jun 2006) in Bari, Italy
Two-week stay at 'Plant Research International' (Mar 2007), Workgroup Waalwijk, Wageningen, The Netherlands
Oral presentation at the 15th International Symposium on Modern Fungicides and Antifungal Compounds (2007), Friedrichsroda, Germany 'Spatial distribution and species complex of Fusarium head blight'
Poster presentation at the 6th European Conference on Precision Agriculture (2007), Skiathos, Greece 'Spatial distribution of Fusarium head blight'
Five-month stay at 'International Maize and Wheat Improvement Center - CIMMYT' (Mar-Jul 2008)
Poster presentation at the 10th International Fusarium Workshop (2008), Szeged, Hungary 'Evaluation in Mexico of Type-I and Type-II resistance in spring wheat lines candidates for targeted crosses against scab'
Oral presentation at the 10th International Fusarium Workshop (2008), Szeged, Hungary 'Spatial distribution of Fusarium head blight pathogens and associated mycotoxins in wheat fields'
Oral presentation at the 56. Deutsche Pflanzenschutztagung (2008), Kiel, Germany 'Räumliche Verteilung der Partiellen Taubährigkeit (Fusarium spp.) und der assoziierten Mykotoxine in Weizenbeständen'
Poster presentation at the 56. Deutsche Pflanzenschutztagung (2008), Kiel, Germany 'Untersuchungen zu Boden- und Bestandesfaktoren und der räumlichen Verteilung der Partiellen Taubährigkeit (Fusarium spp.) in Weizenbeständen'