COORDINATED INTEGRATED PEST MANAGEMENT IN EUROPE 16/03/17 Keeping one step ahead of resistant fungi (septoriose du blé) 2017.03.16 | Janne Hansen Photo: Janne Hansen The race is on between fungicides that can effectively control pathogenic fungi in wheat and the fungi themselves, which are pretty talented at re-inventing themselves to resist the fungicides that aim to control them.
Wheat production in northern Europe is reliant on the application of pesticides throughout the growing season. Fungicides account for approximately 25 percent of these applications, with the disease septoria tritici blotch (STB) as the primary target. In the battle against this fungus in wheat, the available fungicides are but a brief respite because the fungus is adept at developing resistance to the available fungicides. . - Unfortunately, the evolutionary potential of the fungus causing the disease STB, Zymoseptoria tritici, coupled with the highly specific nature of current fungicide chemistries, place the pathogen at a high risk of fungicide resistance development, says Dr. Developing IPM tools for the future. AGRIC_WA_GOV_AU 12/06/15 Diagnosing septoria tritici of wheat.
Romanian agricultural research. 06/2015; Early PCR detection of the Mycosphaerella graminicola in the leaves of winter wheat in Poland. You are using an outdated version of Firefox which is not supported by ResearchGate anymore.
Justus Liebig Universität Giessen - AVRIL 2014 - Thèse en ligne : Impact of fungicide mode of action and application timing on the control of Mycosphaerella graminicola and the physiology and yield of wheat. Communications in agricultural and applied biological sciences 01/2012 Evaluation of plant resistance inducers on different winter soft wheat cultivars against Septoria leaf blotch. Journal of Agricultural Science and Technology (2013) 955-959 Tunisian Population of the Wheat Pathogen Mycosphaerella graminicola is Still Fully Sensitive to Strobilurin Fungicides.
International Research Journal of Applied and Basic Sciences - 2013 - Evaluation of Iranian wheat cultivars Reaction to Septoria Tritici Blotch and virulence Survey of Mycosphaerella graminicola in Khuzestan province. JOURNAL OF LIFE SCIENCES 03/2014; 8(3):211-22. Genetic diversity of Mycosphaerella graminicola in Morocco using amplified fragment length polymorphism. SID_IR - SEPT 2011 - Genetic analysis and heritabilities of resistance to Mycosphaerella graminicola in wheat. Theor Appl Genet - 2011 - Genetic analysis of resistance to septoria tritici blotch in the French winter wheat cultivars Balance. Pest Manag Sci (2010) 27/07/10 Multiple mechanisms account for resistance to sterol 14α-demethylation inhibitors in field isolat. Mycologia 2011;103:764. Genetic diversity and population structure in French populations of Mycosphaerella graminicola. + Author Affiliations Abstract Mycosphaerella graminicola populations were examined in France with microsatellite markers and PCR-SSCP analysis of partial actin and β-tubulin encoding sequences.
A total of 363 isolates was sampled in 2005 from 17 provinces and genotypes from corresponding strains were characterized. Unique haplotypes comprised 84% of the population and gene diversity was high nationwide (0.70) and locally. A moderate genetic differentiation (GST= 0.18) was found and indicated that in France the M. graminicola population was more structured than in other previously studied European countries. Footnotes ↵* Unité de Chimie Environnementale et Interactions sur le Vivant, Université du Littoral Côte d'Opale, 17, avenue Blériot, Calais cedex, BP 699, 62228, France Philippe.Reignault@univ-littoral.fr Received for publication June 9, 2010. Peer Reviewed Journal 28/03/11 Finished genome of the fungal wheat pathogen Mycosphaerella graminicola reveals dispensome struct.
Int. J. Mol. Sci. 2011, 12(1), 682-693; Detection of Mycosphaerella graminicola in Wheat Leaves by a Microsatellite Dinucleotid. Open AccessThis article isfreely availablere-usable Article 1 Institute of Phytopathology, Christian-Albrechts-University Kiel, Hermann-Rodewald-Str. 9, D-24118, Kiel, Germany 2 Botany and Microbiology Department, College of Science, King Saud University, P.O.
Box: 2455, Riyadh 1145, Saudi Arabia 3 Plant Pathology Research Institute, Agricultural Research Centre, Giza, Egypt 4 Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, NL-6708 PB Wageningen, The Netherlands * Author to whom correspondence should be addressed. Received: 2 December 2010; in revised form: 4 January 2011 / Accepted: 4 January 2011 / Published: 19 January 2011 Abstract: Early detection of infection is very important for efficient management of Mycosphaerella graminicola leaf blotch. Keywords: Septoria tritici blotch; microsatellite; wheat; Dothidiomycete; molecular diagnostics MDPI and ACS Style Abd-Elsalam, K.; Bahkali, A.H.; Moslem, M.; De Wit, P.J.G.M.; Verreet, J. FARMERS GUARDIAN 10/06/11 Genetic advance may reduce septoria threat. SCIENTISTS have cracked the genetic code of septoria tritici - the most important foliar disease of wheat in the UK - and in doing so have gained an insight into how the disease is able to evade wheat’s natural defences.
The researchers, who were funded by the BBSRC and others, hope the study, which reveals the complete genome sequence of the septoria pathogen mycosphaerella graminicola, will enable them to breed resistant crop plants or improve the use of pesticides. Septoria typically results in yield losses of 5-15 per cent each season but losses can reach 50 per cent in severely affected crops. According to Prof Kim Hammond-Kosack of Rothamsted Research, who led the study in the UK, septoria attacks wheat plants by stealth. “There is normally a period of about a week between when a plant first becomes infected and when the characteristic blotches of the disease appear on its leaves. Researchers suspect this low numbers of genes may be crucial to the fungus’ stealth approach. UPI 13/06/11 Costly wheat fungus' genome mapped (Mycosphaerella graminicola)
WEST LAFAYETTE, Ind., June 13 (UPI) -- One of the most destructive wheat viruses is genetically structured to evade detection before infecting its host, a U.S. study mapping the fungus' genome found.
Principle author Goodwin, a Purdue University research plant pathologist, said the fungus had fewer enzyme-producing genes that many fungi use to penetrate and digest plants' surfaces while infecting them. Goodwin worked on sequencing the genome of the fungus Mycosphaerella graminicola, which causes septoria tritici blotch, a disease that reduces yield and quality in wheat, the university said in a release.
"We're guessing that the low number of enzymes is to avoid detection by plant defenses," Goodwin said. Enzymes typically break down plant cell walls and begin removing nutrients, leading to the plant's death, the researcher said. M. graminicola enters the plant through small pores in the surface of leaves. PLOS 09/06/11 Finished Genome of the Fungal Wheat Pathogen Mycosphaerella graminicola Reveals Dispensome Structure, Chromosome P. Abstract.
PLOS 19/04/12 Mutagenesis and Functional Studies with Succinate Dehydrogenase Inhibitors in the Wheat Pathogen Mycosphaerella gr. A range of novel carboxamide fungicides, inhibitors of the succinate dehydrogenase enzyme (SDH, EC 188.8.131.52) is currently being introduced to the crop protection market.
The aim of this study was to explore the impact of structurally distinct carboxamides on target site resistance development and to assess possible impact on fitness. We used a UV mutagenesis approach in Mycosphaerella graminicola, a key pathogen of wheat to compare the nature, frequencies and impact of target mutations towards five subclasses of carboxamides. From this screen we identified 27 amino acid substitutions occurring at 18 different positions on the 3 subunits constituting the ubiquinone binding (Qp) site of the enzyme. The nature of substitutions and cross resistance profiles indicated significant differences in the binding interaction to the enzyme across the different inhibitors.
Figures Editor: Olivier Lespinet, Université Paris-Sud, France Copyright: © 2012 Scalliet et al. Introduction Results Figure 1. OEPP - 2010 - Poster de conférence : Mycosphaerella graminicola - a wheat pathogen of increasing concern in Finland. UNIVERSITY OF NOTTINGHAM - 2011 - Thèse en ligne : Fungicide resistance and efficacy for control of Pyrenophora teres and Mycosp. HINDAWI - 2012 - Population Structure of Mycosphaerella graminicola and Location of Genes for Resistance to the Pathogen: Recent. Marzani, Qasim Abdulla (2011) Fungicide resistance and efficacy for control of Pyrenophora teres and Mycosphaerella graminicola on barley and wheat.
PhD thesis, University of Nottingham. Barley net blotch (BNB) caused by Pyrenophora teres, and Septoria tritici blotch (STB) caused by Mycosphaerella graminicola, are destructive cereal diseases worldwide on barley and wheat respectively. Due to the lack of highly resistant cultivars, both diseases are widely controlled using fungicides. Systemic, site-specific modern fungicides have played an essential role in disease management in cereals. Results revealed a high frequency of the F129L mutation within recent UK P. teres isolates. Url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CEwQFjAA&url=http%3A%2F%2Fdownloads.hindawi.com%2Fjournals%2Fija%2F2012%2F680275.