Weinert, Joachim

[["dc.bibliographiccitation.firstpage","461"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","ZEITSCHRIFT FUR PFLANZENKRANKHEITEN UND PFLANZENSCHUTZ-JOURNAL OF PLANT DISEASES AND PROTECTION"],["dc.bibliographiccitation.lastpage","464"],["dc.bibliographiccitation.volume","111"],["dc.contributor.author","Tian, S. M."],["dc.contributor.author","Weinert, Joachim"],["dc.contributor.author","Wolf, G. A."],["dc.date.accessioned","2018-11-07T10:46:16Z"],["dc.date.available","2018-11-07T10:46:16Z"],["dc.date.issued","2004"],["dc.description.abstract","Field trials containing triticale and wheat cultivars were conducted in 2000-2002 at Goettingen, Germany. In 200 1, a high level of infection by Puccinia striiformis (yellow rust) occurred. Symptoms of the disease on spikes were described. The cultivars of triticale showed significant differences in percentage of infected leaf area (0.2-56.2 %) and infected spikelets per ear (1.1-42.6 %). Grain yield loss caused by yellow rust ranged from 0.4 % to 21.5 %, compared to fungicide-treated plots. The susceptible wheat cultivars were also severely infected by P. striiformis on leaves, but rarely on spikes. To our knowledge, this is the first report on the severity of yellow rust infection on triticale and on the yield toss caused by the disease in Germany."],["dc.identifier.isi","000225649000005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47707"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Eugen Ulmer Gmbh Co"],["dc.relation.issn","0340-8159"],["dc.title","Infection of triticale cultivars by Puccinia striiformis: first report on disease severity and yield loss"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","387"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE"],["dc.bibliographiccitation.lastpage","392"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Tian, S. M."],["dc.contributor.author","Weinert, Joachim"],["dc.contributor.author","Zhao, Q. H."],["dc.date.accessioned","2018-11-07T08:33:59Z"],["dc.date.available","2018-11-07T08:33:59Z"],["dc.date.issued","2009"],["dc.description.abstract","Investigation of enzyme activity in extracts from wheat leaves inoculated with Septoria tritici revealed activity of the following enzymes: xylanase, cellulase, protease, and alpha-amylase. Levels of xylanase, protease, and cellulase activities were closely correlated (P > 0.05) to fungal antigens as measured by ELISA and visual disease data on infected leaves from greenhouse experiments and field trials in 2002 and 2003. For the tested wheat cultivars, levels of these three enzymes also showed a good correlation (R = 0.65-0.97) with susceptibility ratings from the Bundessortenamt (Federal Office of Plant Variety) recommended cultivar list, which was based on visual assessment. Protease, xylanase, and cellulase are suggested to have a role in plant pathogenesis by S. tritici. Enzyme activity may serve as a measurement of disease severity for assessing the range of susceptibility of wheat cultivars to S. tritici."],["dc.description.sponsorship","Ministry of Science and Culture of Niedersachsen, Germany"],["dc.identifier.isi","000279668900002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17715"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Taylor & Francis Ltd"],["dc.relation.issn","0706-0661"],["dc.title","Correlation between cell wall-degrading enzymes in wheat leaves infected by Septoria tritici and disease severity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1229"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Plant Disease"],["dc.bibliographiccitation.lastpage","1234"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Tian, S. M."],["dc.contributor.author","Wolf, G. A."],["dc.contributor.author","Weinert, Joachim"],["dc.date.accessioned","2018-11-07T10:54:49Z"],["dc.date.available","2018-11-07T10:54:49Z"],["dc.date.issued","2005"],["dc.description.abstract","Specific and quantitative biotin/avidin-enzyme-linked immunosorbent assays (BA-ELISA) were evaluated for their ability to assess resistance of wheat and triticale cultivars to Septoria tritici (leaf blotch) and Stagonospora nodorum (leaf and glume blotch) in field trials. Using BAELISAs, the antigen amounts of S. tritici and of Stagonospora nodorum were measured in the flag leaf (F) and the first leaf below it (F-1) of five cultivars of triticale at Zadok's growth stage (GS) 75-80 and in 11 cultivars of wheat at GS 73-75 in 2001 and 2002. The presence of the pathogens was found to be specific to parts of the plants, cultivar, and plant species. Stagonospora nodorum was the dominant leaf blotch pathogen in triticale, while both Septoria tritici and Stagonospora nodorum occurred commonly in wheat. Close correlations were obtained between the pathogen amount measured by BA-ELISA and the percentage of necrotic leaf area in the tested cultivars. The BA-ELISA values for the tested triticale and wheat cultivars were ranked, and they correlated well with the susceptibility ratings given in the cultivar list recommended by Bundessortenamt (German Federal Office of Plant Variety), which is based on visual assessment of the leaf blotch complex caused by S. tritici and Stagonospora nodorum. The relative susceptibilities of individual wheat cultivars to both pathogens were similar. In conclusion, BA-ELISA provided for an accurate diagnosis and quantification of S. tritici and Stagonospora nodorum in infected plant tissue, and therefore can be used to assess resistance to these fungi in a disease complex in both early-stage breeding lines and field trials."],["dc.identifier.doi","10.1094/PD-89-1229"],["dc.identifier.isi","000232857600015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49651"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Phytopathological Soc"],["dc.relation.issn","0191-2917"],["dc.title","Accurate assessment of wheat and triticale cultivar resistance to Septoria tritici and Stagonospora nodorum infection by biotin/avidin ELISA"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]