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Physiological effects of mandestrobin
Kunio Ido1, So Kiguchi1, Fukumatsu Iwahashi1
1Health & Crop Sciences Research Laboratory, Sumitomo Chemical Co., Ltd., 2-1 Takatsukasa 4-chome, Takarazuka, Hyogo 665-8555, Japan.
Journal of Pesticide Science
|September 11, 2020
Summary
Mandestrobin fungicide enhances crop yield and delays plant aging by modulating plant gene expression. This novel methoxyacetamide fungicide offers physiological benefits beyond fungal disease control.
Area of Science:
- Agricultural Science
- Plant Physiology
- Biochemistry
Background:
- Fungicides like QoIs and SDHIs can exert physiological effects on plants.
- Mandestrobin is a novel methoxyacetamide fungicide targeting fungal mitochondrial complex III.
Purpose of the Study:
- To investigate the physiological effects of mandestrobin on plants.
- To explore the underlying molecular mechanisms of these effects.
Main Methods:
- Field trials with *Brassica napus* under disease-free conditions.
- Laboratory experiments on *B. napus* leaf discs and *Arabidopsis thaliana* leaf senescence.
- Transcriptome analysis and gene ontology enrichment.
Main Results:
- Mandestrobin increased *B. napus* yield by 6.3% in field trials.
- Delayed chlorophyll degradation and senescence in plant tissues.
- Downregulated chlorophyll degradation and jasmonate-related genes; upregulated salicylate-related genes.
Conclusions:
- Mandestrobin exhibits plant growth-promoting and anti-senescence properties.
- The fungicide influences plant physiology via modulation of specific gene pathways.
- Potential for mandestrobin as a yield enhancer and plant health modulator.
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