Effects of Mixtures Containing Physcion and Several Fungicides on the Yield of Wheat by Seed Coating and Its Potential Mechanisms

Tian, Zhixiang; Li, Jingchong; Zhang, Fulong; Xu, Li; Zhou, Feng; Zhou, Lin; Wang, Hongliang; Liu, Runqiang

doi:10.3390/agriculture14020237

Cited by 2 publications

References 32 publications

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Exploring the mechanism of resistance of Rhizoctonia cerealis to trifloxystrobin

Zhou,

Xu,

Shi

et al. 2024

Preprint

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Wheat sheath eyespot (WES) is an important disease in wheat production. Due to the lack of wheat varieties with stable resistance and high yield, chemical agents are currently the main control method. Trifloxystrobin has good control effects on a variety of plant pathogenic fungi due to its wide fungicidal spectrum and high fungicidal activity. Laboratory preliminary studies have shown that trifloxystrobin has good antibacterial activity against Rhizoctonia cerealis, but is there a risk of drug resistance after long-term application? And what is the mechanism by which R. cerealis develops resistance to it? Both need further study. In this study, the trifloxystrobin-resistant R. cerealis obtained by drug domestication in the early stage of the laboratory was used as the main research material to study the biological characteristics and R. cerealis resistance mechanism to trifloxystrobin. Our results showed that compared with the sensitive isolates, the mycelial growth rate of the trifloxystrobin-resistant R. cerealis mutant was reduced, the ability to produce sclerotia was enhanced, the pathogenicity to the host wheat was enhanced, and it was more sensitive to temperature. At the same time, the results of osmotic pressure measurement showed that compared with the sensitive strain, the mycelial growth rate of the trifloxystrobin-resistant R. cerealis mutant under different pH and salt stresses had no significant difference, while low concentration (< 20 g/L) of glucose stress promoted the mycelial growth of the trifloxystrobin-resistant R. cerealis mutants to a certain extent. In addition, there was no cross-resistance between trifloxystrobin-resistant R. cerealis and the commonly used fungicides difenoconazole, flufenoxazole, flutriafol, tebuconazole, metconazole and carbendazim, and there was negative cross-resistance between it and propiconazole, hexaconazole, thiofuran and fluazinam, that is, the above fungicides can be used as alternative fungicides in areas where wheat sheath blight is resistant to trifloxystrobin. The research results provide data support for clarifying the resistance mechanism of R. cerealis to trifloxystrobin, which is of great significance for effectively preventing and controlling wheat sheath blight and ensuring the safe production of wheat.

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Exploring the mechanism of resistance of Rhizoctonia cerealis to trifloxystrobin

Zhou,

Xu,

Shi

et al. 2024

Preprint

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Synthetic and Natural Antifungal Substances in Cereal Grain Protection: A Review of Bright and Dark Sides

Szczygieł,

Koziróg,

Otlewska

2024

Molecules

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Molds pose a severe challenge to agriculture because they cause very large crop losses. For this reason, synthetic fungicides have been used for a long time. Without adequate protection against pests and various pathogens, crop losses could be as high as 30–40%. However, concerns mainly about the environmental impact of synthetic antifungals and human health risk have prompted a search for natural alternatives. But do natural remedies only have advantages? This article reviews the current state of knowledge on the use of antifungal substances in agriculture to protect seeds against phytopathogens. The advantages and disadvantages of using both synthetic and natural fungicides to protect cereal grains were discussed, indicating specific examples and mechanisms of action. The possibilities of an integrated control approach, combining cultural, biological, and chemical methods are described, constituting a holistic strategy for sustainable mold management in the grain industry.

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Effects of Mixtures Containing Physcion and Several Fungicides on the Yield of Wheat by Seed Coating and Its Potential Mechanisms

Cited by 2 publications

References 32 publications

Exploring the mechanism of resistance of Rhizoctonia cerealis to trifloxystrobin

Exploring the mechanism of resistance of Rhizoctonia cerealis to trifloxystrobin

Synthetic and Natural Antifungal Substances in Cereal Grain Protection: A Review of Bright and Dark Sides

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