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
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
Eoghan Curran, James I. I. Burke, Angela Feechan
Summary: Zymoseptoria tritici is a globally important fungal pathogen causing a foliar disease in wheat. Co-infection of multiple strains of this fungus is known to be common in the field, yet its impact on disease severity and plant defense remains unclear.
Article
Plant Sciences
Hannah R. Blyth, Dan Smith, Robert King, Carlos Bayon, Tom Ashfield, Hannah Walpole, Eudri Venter, Rumiana V. Ray, Kostya Kanyuka, Jason J. Rudd
Summary: Mutagenomics screening on Zymoseptoria tritici identified four mutants with reduced virulence on wheat, and whole-genome re-sequencing revealed T-DNA insertion sites and other mutations potentially affecting gene functions. The loss of function mutations in the ZtSSK2 gene were found in two independent mutant strains with altered stress sensitivities and aberrant hyphal growth phenotypes, and genetic complementation restored their wild-type function. This study highlights the importance of whole genome sequencing in mutagenomic discovery and identifies new genes involved in pathogen virulence.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Sepideh Hatami Rad, Leila Ebrahimi, Daniel Croll
Summary: Managing pathogen damage in wheat production is crucial. This study analyzed the evolution of the AvrStb6 effector in Iranian isolates of Z. tritici. It found a high genetic diversity and global diversity patterns of AvrStb6, highlighting its importance for Z. tritici virulence.
Article
Agronomy
Ioannis Spyroglou, Krystyna Rybka, Pawel Czembor, Dominika Piaskowska, Marketa Pernisova, Przemyslaw Matysik
Summary: Fluorescence parameters can be used to estimate wheat STB resistance, and the resistance can be estimated within 8 days after inoculation.
Article
Microbiology
Minely Ceron-Bustamante, Francesco Tini, Giovanni Beccari, Paolo Benincasa, Lorenzo Covarelli
Summary: The wheat pathogen Zymoseptoria tritici responds to light by modulating its gene expression, and different light wavelengths have specific effects on its growth and host colonization. Blue light reduces colony growth, while dark and red light promote fungal development. White light stimulates host colonization, while red light represses it. This study demonstrates the importance of light in the interaction between Z. tritici and wheat.
Article
Agronomy
Pierre Hellin, Maxime Duvivier, Thies M. Heick, Bart A. Fraaije, Charlotte Bataille, Aurelie Clinckemaillie, Anne Legreve, Lise N. Jorgensen, Bjorn Andersson, Berit Samils, Bernd Rodemann, Gunilla Berg, Fiona Hutton, Maxime Garnault, Moussa El Jarroudi, Gilles Couleaud, Steven Kildea
Summary: The study evaluated the frequency of key alterations causing resistance in commercial wheat crops across European countries, revealing the highest frequencies in Ireland and Great Britain, with a gradual increase over the past decade. While these alterations are becoming dominant in certain regions, there is still potential to delay their selection across the wider European population, highlighting the need for the implementation of fungicide antiresistance measures.
PEST MANAGEMENT SCIENCE
(2021)
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
Biochemistry & Molecular Biology
Zemran Mustafa, Fatih Olmez, Mahinur Akkaya
Summary: In this study, the pathogenicity of Zymoseptoria tritici effector candidate genes was evaluated through gene knockout. The KO2 mutant showed severely attenuated mycelial growth and exclusively produced macropycnidiospores. However, the virulence of the knockout mutants in wheat leaves remained similar to the wild-type strain. Understanding the biology and interactions between Z. tritici and wheat can provide new strategies for combating septoria tritici blotch and developing wheat cultivars resistant to a broader range of Z. tritici strains.
MOLECULAR BIOLOGY REPORTS
(2022)
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
Marlon C. de Borba, Aline C. Velho, Mateus B. de Freitas, Maxime Holvoet, Alessandra Maia-Grondard, Raymonde Baltenweck, Maryline Magnin-Robert, Beatrice Randoux, Jean-Louis Hilbert, Philippe Reignault, Philippe Hugueney, Ali Siah, Marciel J. Stadnik
Summary: This study evaluated the potential of the laminarin-based formulation Vacciplant to protect and induce resistance in wheat against the pathogen Zymoseptoria tritici. The results showed that Vacciplant exhibited a direct antifungal activity and reduced disease severity and pycnidium density. It also elicited the expression of defense-related genes in wheat and had a low metabolic cost associated with induction of plant resistance.
Article
Agronomy
Lyudmila Plotnikova, Ainura Sagendykova, Violetta Pozherukova
Summary: This study aimed to investigate the resistance of Thinopyrum ponticum and introgressive lines of spring common wheat to Septoria blotch, as well as their agronomical properties for breeding programs in Western Siberia. The research identified lines that possessed both leaf and ear resistance to the disease, along with high yield and grain quality.
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
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
Multidisciplinary Sciences
Tiphaine Vidal, Pauline Lusley, Marc Leconte, Claude de Vallavieille-Pope, Laurent Huber, Sebastien Saint-Jean
Article
Agronomy
J. Borg, L. P. Kiaer, C. Lecarpentier, I. Goldringer, A. Gauffreteau, S. Saint-Jean, S. Barot, J. Enjalbert
FIELD CROPS RESEARCH
(2018)
Article
Plant Sciences
C. Gigot, C. de Vallavieille-Pope, L. Huber, S. Saint-Jean
Article
Agronomy
A. Calonnec, J-B. Burie, M. Langlais, S. Guyader, S. Saint-Jean, I. Sache, B. Tivoli
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2013)
Article
Agronomy
Alexis Marceau, Sebastien Saint-Jean, Benjamin Loubet, Xavier Foueillassar, Laurent Huber
FIELD CROPS RESEARCH
(2012)
Article
Agronomy
C. Gigot, S. Saint-Jean, L. Huber, C. Maumene, M. Leconte, B. Kerhornou, C. de Vallavieille-Pope
Review
Agronomy
Noemie Gaudio, Abraham J. Escobar-Gutierrez, Pierre Casadebaig, Jochem B. Evers, Frederic Gerard, Gaetan Louarn, Nathalie Colbach, Sebastian Munz, Marie Launay, Helene Marrou, Romain Barillot, Philippe Hinsinger, Jacques-Eric Bergez, Didier Combes, Jean-Louis Durand, Ela Frak, Loic Pages, Christophe Pradal, Sebastien Saint-Jean, Wopke Van der Werf, Eric Justes
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2019)
Article
Agronomy
Tiphaine Vidal, Sebastien Saint-Jean, Pauline Lusley, Marc Lecon, Safa Ben Krima, Anne-Lise Boixel, Wheatamix Consortium, Claude de Vallayieille-Pope
Article
Plant Sciences
Amelie A. M. Cantarel, Vincent Allard, Bruno Andrieu, Sebastien Barot, Jerome Enjalbert, Jonathan Gervaix, Isabelle Goldringer, Thomas Pommier, Sebastien Saint-Jean, Xavier Le Roux
Summary: Trait-based approaches are not commonly used in studying agroecosystems, however, a study found that trait variability among varieties of common wheat is low for traits under strong selection. For traits not directly selected, the variability among varieties can be high compared to wild plant species. The study also found that artificial selection can alter trait syndromes in plant species.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Agronomy
Carolina Orellana-Torrejon, Tiphaine Vidal, Anne-Lise Boixel, Sandrine Gelisse, Sebastien Saint-Jean, Suffert Frederic
Summary: Cultivar mixtures can slow down polycyclic epidemics and have a reciprocal protective effect on disease reduction. The proportions of cultivars in mixtures can modulate the size of pathogen population, the size of virulent subpopulation, and the frequency of virulence.
Article
Agronomy
Carolina Orellana-Torrejon, Tiphaine Vidal, Sebastien Saint-Jean, Frederic Suffert
Summary: This study investigates the impact of wheat mixture planting on the evolution of Zymoseptoria tritici populations. The results show that mixtures can reduce the virulence frequencies of pathogens and provide an effective strategy for disease control.
Article
Plant Sciences
S. Savary, A. Djurle, J. Yuen, A. Ficke, V. Rossi, P. D. Esker, J. M. C. Fernandes, E. M. Del Ponte, J. Kumar, L. V. Madden, P. Paul, N. McRoberts, P. K. Singh, L. Huber, C. Pope de Vallavielle, S. Saint-Jean, L. Willocquet
Article
Agronomy
Tiphaine Vidal, Anne-Lise Boixel, Brigitte Durand, Claude de Vallavieille-Pope, Laurent Huber, Sebastien Saint-Jean
AGRICULTURAL AND FOREST METEOROLOGY
(2017)
Meeting Abstract
Plant Sciences
C. Gigot, S. Saint-Jean, L. Huber, C. de Vallavieille-Pope