A note on the impact of CYP51 alterations and their combination in the wheat pathogen Zymoseptoria tritici on sensitivity to the azole fungicides epoxiconazole and metconazole

IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Irish Journal of Agricultural and Food Research Pub Date : 2023-01-01 DOI:10.15212/ijafr-2023-0103
S. Kildea, H. Dooley, S. Byrne
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Abstract

Septoria tritici blotch caused by the fungal pathogen Zymoseptoria tritici is the most economically damaging disease of winter wheat in Ireland. As azoles have been intensively used, Z. tritici has developed different means of resisting their toxic effects with multiple alterations now reported in individual strains. Using previously characterised Irish collections of Z. tritici, the relationships between these different alterations have been examined using conditional inference trees and random forest. The results from this study highlight the importance of specific alterations I381V and S524T, with both contributing most to the reductions in epoxiconazole (EPZ) and metconazole (MTZ) sensitivity. As the azole class of fungicides is an extensive and diverse group, it is possible these alterations do not impact other azoles in a similar manner. Further analysis of these and contemporary collections to additional azoles, including mefentrifluconazole, which continues to provide good field control of Z. tritici, is warranted.
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小麦致病菌小麦酵母菌CYP51基因突变及其组合对唑类杀菌剂环氧康唑和甲康唑敏感性的影响
由小麦酵母菌(Zymoseptoria tritici)引起的小麦黑斑病是爱尔兰冬小麦最具经济危害性的病害。随着唑类药物的广泛使用,小麦曲霉已经发展出了不同的方法来抵抗它们的毒性作用,目前在个别菌株中报道了多种变化。使用以前描述的爱尔兰的Z. tritici集合,使用条件推理树和随机森林检查了这些不同变化之间的关系。本研究的结果强调了I381V和S524T特异性改变的重要性,它们对环氧康唑(EPZ)和甲康唑(MTZ)敏感性的降低贡献最大。由于唑类杀菌剂是一个广泛而多样的群体,这些变化可能不会以类似的方式影响其他唑类。有必要对这些和当代收集的标本进一步分析其他唑类,包括甲苯三氟康唑,它们继续提供良好的田间防治麦曲弧菌。
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来源期刊
CiteScore
2.50
自引率
20.00%
发文量
23
审稿时长
>36 weeks
期刊介绍: The Irish Journal of Agricultural and Food Research is a peer reviewed open access scientific journal published by Teagasc (Agriculture and Food Development Authority, Ireland). Manuscripts on any aspect of research of direct relevance to Irish agriculture and food production, including plant and animal sciences, food science, agri environmental science, soils, engineering, buildings, economics and sociology, will be considered for publication. The work must demonstrate novelty and relevance to the field of research. Papers published or offered for publication elsewhere will not be considered, but the publication of an abstract does not preclude the publication of the full paper in this journal.
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