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Large‐scale study validates that regional fungicide applications are major determinants of resistance evolution in the wheat pathogen Zymoseptoria tritici in France
- Source :
- New Phytologist, New Phytologist, Wiley, 2021, 229 (6), pp.3508-3521. ⟨10.1111/nph.17107⟩
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- International audience; In modern cropping systems, the near-universal use of plant protection products selects for resistance in pest populations. The emergence and evolution of this adaptive trait threaten treatment efficacy. We identified determinants of fungicide resistance evolution and quantified their effects at a large spatiotemporal scale. We focused on Zymoseptoria tritici, which causes leaf blotch in wheat. Phenotypes of qualitative or quantitative resistance to various fungicides were monitored annually, from 2004 to 2017, at about 70 sites throughout 22 regions of France (territorial units of 25000km2 on average). We modelled changes in resistance frequency with regional anti-Septoria fungicide use, yield losses due to the disease and the regional area under organic wheat. The major driver of resistance dynamics was fungicide use at the regional scale. We estimated its effect on the increase in resistance and relative apparent fitness of each resistance phenotype. The predictions of the model replicated the spatiotemporal patterns of resistance observed in field populations (R2 from 0.56 to 0.82). The evolution of fungicide resistance is mainly determined at the regional scale. This study therefore showed that collective management at the regional scale could effectively complete local actions.This article is protected by copyright. All rights reserved.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Physiology
Plant Science
Large-scale evolution
Biology
01 natural sciences
03 medical and health sciences
Septoria leaf blotch
Ascomycota
Resistance determinants
Plant Diseases
2. Zero hunger
Adaptive traits
Mathematical modelling
Resistance (ecology)
food and beverages
15. Life on land
biology.organism_classification
Treatment efficacy
Fungicides, Industrial
Fungicide
030104 developmental biology
Agronomy
Mycosphaerella graminicola
Zymoseptoria tritici
[SDE]Environmental Sciences
Regional fungicide use
France
PEST analysis
Resistance dynamics
Scale (map)
Cropping
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14698137 and 0028646X
- Volume :
- 229
- Database :
- OpenAIRE
- Journal :
- New Phytologist
- Accession number :
- edsair.doi.dedup.....bd7dcd8803333b19eafbfa12aa1e50a9