Article
Agronomy
Steven Kildea, Pierre Hellin, Thies M. Heick, Stephen Byrne, Fiona Hutton
Summary: This study reveals a wide range of sensitivity to mefentrifluconazole in European Z. tritici populations. The Irish population showed the lowest sensitivity to the tested azoles. Further analysis of the Irish population in 2021 demonstrated that sensitivity differences were associated with the frequencies of key resistance mechanisms. Reductions in the efficacy of mefentrifluconazole were observed towards strains with the lowest sensitivity under glasshouse conditions.
PEST MANAGEMENT SCIENCE
(2023)
Article
Agronomy
Steven Kildea, Pierre Hellin, Thies M. Heick, Fiona Hutton
Summary: The study found a wide range of sensitivity to fenpicoxamid in European Z. tritici populations, with limited or non-existing target-site resistance mechanisms and limited impact of non-target site resistance mechanisms in the field.
PEST MANAGEMENT SCIENCE
(2022)
Article
Plant Sciences
Karolina Lavrukaite, Thies M. Heick, Jurate Ramanauskiene, Rita Armoniene, Antanas Ronis
Summary: Zymoseptoria tritici is a major cause of yield loss in winter wheat worldwide due to its ability to cause septoria leaf blotch. Fungicides are commonly used by farmers to protect their crops, but the effectiveness of these measures is decreasing rapidly as the pathogen develops resistance through natural mutation mechanisms. This study conducted sensitivity tests, mutation detection, and field experiments in Lithuania to assess the current situation of fungicide resistance. The findings reveal an increase in resistance mutations and provide important information on the status of fungicide resistance in the Lithuanian Z. tritici population.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Tim Birr, Mario Hasler, Joseph-Alexander Verreet, Holger Klink
Summary: The study found that the sensitivity of wheat septoria tritici blotch to specific fungicides has changed over different time periods, with sensitivity remaining stable or decreasing for most fungicides except for a slight increase in sensitivity for one. Over the past 21 years, complete resistance of Z. tritici to quinone outside inhibitors has developed, and resistance to two other fungicides has gradually increased, posing a major challenge for future wheat cultivation.
Article
Plant Sciences
Remi Platel, Anca Lucau-Danila, Raymonde Baltenweck, Alessandra Maia-Grondard, Pauline Trapet, Maryline Magnin-Robert, Beatrice Randoux, Morgane Duret, Patrice Halama, Jean-Louis Hilbert, Francois Coutte, Philippe Jacques, Philippe Hugueney, Philippe Reignault, Ali Siah
Summary: The lipopeptide mycosubtilin from Bacillus subtilis can protect wheat against Zymoseptoria tritici through direct and indirect modes of action. It primes the expression of defense-related genes and promotes the accumulation of flavonoids in wheat during the early stages of infection. Abscisic acid (ABA) biosynthesis and ABA-associated signaling pathways are also regulated, suggesting a role of this phytohormone in the indirect activity of mycosubtilin. This study provides new insights into induced immunity in wheat and the potential use of mycosubtilin as a biocontrol compound against Z. tritici.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Fateme Ghiasi Noei, Mojtaba Imami, Fardad Didaran, Mohammad Amin Ghanbari, Elham Zamani, Amin Ebrahimi, Sasan Aliniaeifard, Mohsen Farzaneh, Mohammad Javan-Nikkhah, Angela Feechan, Amir Mirzadi Gohari
Summary: This study investigates the biochemical and physiological changes in wheat during gene-for-gene interaction with the fungal pathogen Zymoseptoria tritici. It reveals the immune response triggered by the recognition of AvrStb6 by the resistance gene Stb6 and analyzes plant responses to pathogen infection, including transient stomatal closure and maintenance of photosynthesis. The findings demonstrate the coordination of antioxidant enzyme expression and activity to counteract oxidative stress in the Stb6-AvrStb6 interaction.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Christina H. Hagerty, Ann M. Klein, Catherine L. Reardon, Duncan R. Kroese, Caroline J. Melle, Kaci R. Graber, Christopher C. Mundt
Summary: The study indicates a decrease in SDHI sensitivity in Z. tritici isolates following the introduction of active ingredients in the Willamette Valley, with a significant reduction in cross-sensitivity observed between different SDHI active ingredients. Managing resistance requires careful consideration, and rotation within the same group may not be sufficient for resistance management.
Article
Agronomy
Holger Klink, Joseph-Alexander Verreet, Mario Hasler, Tim Birr
Summary: Research suggests that the sensitivity of Z. tritici towards older triazole fungicides has been decreasing over the years, while the new isopropanol triazole mefentrifluconazole has shown consistent efficacy in inhibiting the fungal growth of Z. tritici.
Article
Plant Sciences
Christopher Stephens, Fatih Olmez, Hannah Blyth, Megan McDonald, Anuradha Bansal, Emine Burcu Turgay, Florian Hahn, Cyrille Saintenac, Vladimir Nekrasov, Peter Solomon, Andrew Milgate, Bart Fraaije, Jason Rudd, Kostya Kanyuka
Summary: Septoria tritici blotch (STB), caused by the fungus Zymoseptoria tritici, is a major economically important disease of wheat. Recent research has identified gene-for-gene interaction factors between Z. tritici and wheat, namely the wheat receptor-like kinase Stb6 and the Z. tritici secreted effector protein AvrStb6. Studies show a high diversity of AvrStb6 haplotypes in earlier Z. tritici isolates, but a complete absence of the avirulence isoform among modern isolates, indicating a trend towards elimination of avirulence haplotypes in subsequent Z. tritici populations.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Plant Sciences
Melissa Battache, Marc-Henri Lebrun, Kaori Sakai, Olivier Soudiere, Florence Cambon, Thierry Langin, Cyrille Saintenac
Summary: Septoria tritici blotch (STB), caused by the fungus Zymoseptoria tritici, is a major wheat disease in Europe. The genetic resistance to STB is an effective strategy, but the mechanisms underlying resistance are not well understood, hindering the implementation of management strategies based on knowledge.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Maxime Garnault, Clementine Duplaix, Pierre Leroux, Gilles Couleaud, Olivier David, Anne-Sophie Walker, Florence Carpentier
Summary: A study conducted in France found that the evolution of fungicide resistance is mainly determined by the regional scale of fungicide use. The results of the study suggest that collective management at the regional scale can effectively complement local actions.
Article
Biology
Greta Battistini, Katia Gazzetti, Marina Collina
Summary: This study presents a method for detecting the G143A allele of Z. tritici, the causal agent of STB in wheat, using droplet digital polymerase chain reaction (ddPCR) technology. This method allows for rapid, sensitive, and accurate detection of very low allele percentages, which is crucial for early monitoring of resistance emergence and effective control of STB.
Article
Plant Sciences
Adam Kuzdralinski, Justyna Lesniowska-Nowak, Michal Nowak, Magdalena Kawecka, Anna Kot, Karolina Rozaniecka, Agnieszka Ostrowska, Marta Muszynska, Adam Wasko, Hubert Szczerba
Summary: New primer sets were developed for species-specific identification of Zymoseptoria tritici in wheat leaf samples, showing high specificity and sensitivity in both in silico validation and in vitro tests on common wheat samples with visual symptoms of Septoria tritici blotch conducted in Poland.
Article
Plant Sciences
Nannan Yang, Ben Ovenden, Brad Baxter, Megan V. C. McDonald, Peter S. S. Solomon, Andrew Milgate
Summary: Septoria tritici blotch (STB) is recognized as the third most important wheat disease worldwide, affecting a significant portion of wheat production. This study identified new quantitative trait loci (QTLs) responsible for seedling-stage resistance and adult-plant stage resistance (APR) against Zymoseptoria tritici. Additionally, a previously unidentified QTL providing multi-stage resistance (MSR) was characterized. Stacking multiple favorable MSR alleles was found to significantly improve resistance to Z. tritici.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Sarrah Ben M'Barek, Marwa Laribi, Wided Abdedayem, Moez Fakhfakh, Amor Hassine Yahyaoui
Summary: Septoria tritici blotch caused by Zymoseptoria tritici is a serious threat to wheat in Tunisia, causing up to 50% yield losses. The disease occurs mainly on durum wheat (DW) and bread wheat (BW), with strains of Z. tritici exhibiting host and cultivar specificity. Cross-inoculation experiments showed significant virulence variability among strains and host species specificity, indicating a need for further research on the genetic factors involved in host specificity.