Virulence Spectra of Hungarian Pyrenophora teres f. teres Isolates Collected from Experimental Fields Show Continuous Variation without Specific Isolate x Barley Differential Interactions
Article
Bakonyi, Jozsef, Seress, Diána, Nagy, Zoltan A., Csorba, ldikó, Cseplo, Monika, Marton, Tibor A., Martin, Anke and Meszaros, Klara. 2024. "Virulence Spectra of Hungarian Pyrenophora teres f. teres Isolates Collected from Experimental Fields Show Continuous Variation without Specific Isolate x Barley Differential Interactions." Journal of Fungi. 10 (3). https://doi.org/10.3390/jof10030184
Article Title | Virulence Spectra of Hungarian Pyrenophora teres f. teres Isolates Collected from Experimental Fields Show Continuous Variation without Specific Isolate x Barley Differential Interactions |
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ERA Journal ID | 213247 |
Article Category | Article |
Authors | Bakonyi, Jozsef, Seress, Diána, Nagy, Zoltan A., Csorba, ldikó, Cseplo, Monika, Marton, Tibor A., Martin, Anke and Meszaros, Klara |
Journal Title | Journal of Fungi |
Journal Citation | 10 (3) |
Number of Pages | 19 |
Year | 2024 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 2309-608X |
Digital Object Identifier (DOI) | https://doi.org/10.3390/jof10030184 |
Web Address (URL) | https://www.mdpi.com/2309-608X/10/3/184 |
Abstract | Pyrenophora teres f. teres (Ptt), the causal agent of net form net blotch (NFNB) disease, is an important and widespread pathogen of barley. This study aimed to quantify and characterize the virulence of Ptt isolates collected from experimental fields of barley in Hungary. Infection responses across 20 barley differentials were obtained from seedling assays of 34 Ptt isolates collected from three Hungarian breeding stations between 2008 and 2018. Twenty-eight Ptt pathotypes were identified. Correspondence analysis followed by hierarchical clustering on the principal components and host-by-pathogen GGE biplots suggested a continuous range of virulence and an absence of specific isolate × barley differential interactions. The isolates were classified into four isolate groups (IG) using agglomerative hierarchical clustering. One IG could be distinguished from other IGs based on avirulence/virulence on one to five barley differentials. Several barley differentials expressed strong resistance against multiple Ptt isolates and may be useful in the development of NFNB-resistant barley cultivars in Hungary. Our results emphasize that the previously developed international barley differential set needs to be improved and adapted to the Hungarian Ptt population. This is the first report on the pathogenic variations of Ptt in Hungary. |
Keywords | correspondence analysis |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Byline Affiliations | HUN-REN Centre for Agricultural Research, Hungary |
Mendel University, Czech Republic | |
Syngenta Hungary, Hungary | |
Centre for Crop Health |
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