Effect of seventeen pesticides on mycelial growth of Akanthomyces, Beauveria, Cordyceps and Purpureocillium strains.

Ondráčková, Eliška; Seidenglanz, Marek; Šafář, Jaroslav

doi:10.33585/cmy.71201

Cited by 5 publications

(6 citation statements)

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“…In the current study, copper oxychloride completely inhibited growth of P. variotii at all doses, and copper hydroxide did the same at the highest dose, thus both compounds were fungistatic. By contrast, Ondráčková et al [76] observed growth inhibition of 79.6% in P. lilacinus treated with mancozeb at 1500 ppm ai; the lowest dose tested in our study was 800 ppm ai, which resulted in >90% inhibition, and it was not fungicidal at any of the tested doses. The fungicides pencycuron and propamocarb were compatible with P. variotii at all tested doses.…”

Section: Discussioncontrasting

confidence: 95%

“…In our study, complete inhibition of P. variotii growth occurred at dose D3 (1440 ppm ai), and growth inhibition above 92% was observed only at 960 and 480 ppm ai. Other studies showed that copper hydroxide at 1660 and 2592 ppp ai used on P. fumosoroseus resulted in growth inhibition of approximately 9% and 82%, respectively [75], while Dermici and Denihan [76] observed a minimum inhibitory concentration of >5000 ppm ai for P. lilacinus. Copper oxychloride at 1500 ppm ai completely inhibits growth of P. lilacinus [76], however others found inhibition of only 44.1% using copper oxychloride at 4200 ppm ai.…”

Section: Discussionmentioning

confidence: 97%

“…Other studies showed that copper hydroxide at 1660 and 2592 ppp ai used on P. fumosoroseus resulted in growth inhibition of approximately 9% and 82%, respectively [75], while Dermici and Denihan [76] observed a minimum inhibitory concentration of >5000 ppm ai for P. lilacinus. Copper oxychloride at 1500 ppm ai completely inhibits growth of P. lilacinus [76], however others found inhibition of only 44.1% using copper oxychloride at 4200 ppm ai. In the current study, copper oxychloride completely inhibited growth of P. variotii at all doses, and copper hydroxide did the same at the highest dose, thus both compounds were fungistatic.…”

Section: Discussionmentioning

confidence: 97%

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Biocontrol Effects of Paecilomyces variotii against Fungal Plant Diseases

Moreno-Gavíra

Diánez

Sánchez-Montesinos

et al. 2021

JoF

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The genus Paecilomyces is known for its potential application in the control of pests and diseases; however, its use in agriculture is limited to few species. Research interest in new formulations based on microorganisms for the control of pathogens is growing exponentially; therefore, it is necessary to study new isolates, which may help control diseases effectively, and to examine their compatibility with established agricultural control methods. We analysed in vitro and in vivo the antagonistic capacity of Paecilomyces variotii against seven phytopathogens with a high incidence in different crops, and we examined its compatibility with 24 commercial fungicides. P. variotii was applied in the following pathosystems: B. cinereal—melon, Sclerotinia sclerotiorum—pepper, R. solani—tomato, F. solani—zucchini, P. aphanidermatum—melon, M. melonis—melon, and P. xanthii—zucchini. The results showed strong control effects on M. melonis and P. xanthii, reducing the disease severity index by 78% and 76%, respectively. The reduction in disease severity in the other pathosystems ranged from 29% to 44%. However, application of metabolites alone did not cause any significant effect on mycelial growth of phytopathogens, apart from F. solani, in which up to 12% inhibition was observed in vitro when the extract was applied at a concentration of 15% in the medium. P. variotii was compatible with most of the tested fungicides, and of the 24 fungicides tested at the maximum authorised dose, 6 acted as fungicides, 4 as fungistatics, and the remaining showed inhibition rates ranging from 18.2% to 95.8%. These results indicate that P. variotii is a potential biological control agent to be used against several aerial and soil diseases, thus it should be integrated into modern pest management strategies.

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Section: Discussioncontrasting

confidence: 95%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

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Biocontrol Effects of Paecilomyces variotii against Fungal Plant Diseases

Moreno-Gavíra

Diánez

Sánchez-Montesinos

et al. 2021

JoF

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“…In addition, Khan et al (2012) demonstrated that metalaxyl (0.1%) and mancozeb (0.2%) were not compatible with B. bassiana and M. anisopliae since they caused complete inhibition of vegetative growth and spore germination. The same effect of mancozeb on B. bassiana was reported by Challa and Sanivada, 2014;Ondráčková et al, 2019). The results showed that the fungicide Zenga ® had a lower adverse effect on conidia and mycelium of both fungal isolates than Ridomil ® formulation which might be due to the presence of copper in the formulation.…”

Section: Discussionsupporting

confidence: 78%

Compatibility of Entomopathogenic Fungi, Beauvaria bassiana (Bals. -Criv.) Vuill. and Metarhizium anisopliae (Metchn) Sorokin Isolates with Different Agrochemicals Commonly Used in Vineyards.

Shoeb

Solaiman

Abd-Elgyed

et al. 2021

Egyptian Academic Journal of Biological Sciences. A, Entomology

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“…Furthermore, it has been studied also for plant growth promoting activities; phytopathogen biocontrol; and bioremediation of potentially toxic elements such as As, Cd, Cr, and Pb [68][69][70][71]. Moreover, P. lilacinum has already been reported to be tolerant to several other herbicides with active ingredients such as Pendimethalin, Pethoxamid, Clomazone, Chlorotoluron, and Imazamox [72].…”

Section: Discussionmentioning

confidence: 99%

Glyphosate-Eating Fungi: Study on Fungal Saprotrophic Strains’ Ability to Tolerate and Utilise Glyphosate as a Nutritional Source and on the Ability of Purpureocillium lilacinum to Degrade It

et al. 2021

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Glyphosate is the most commonly used herbicide worldwide. Its improper use during recent decades has resulted in glyphosate contamination of soils and waters. Fungal bioremediation is an environmentally friendly, cost effective, and feasible solution to glyphosate contamination in soils. In this study, several saprotrophic fungi isolated from agricultural environments were screened for their ability to tolerate and utilise Roundup in different cultural conditions as a nutritional source. Purpureocillium lilacinum was further screened to evaluate the ability to break down and utilise glyphosate as a P source in a liquid medium. The dose–response effect for Roundup, and the difference in toxicity between pure glyphosate and Roundup were also studied. This study reports the ability of several strains to tolerate 1 mM and 10 mM Roundup and to utilise it as nutritional source. P. lilacinum was reported for the first time for its ability to degrade glyphosate to a considerable extent (80%) and to utilise it as a P source, without showing dose-dependent negative effects on growth. Pure glyphosate was found to be more toxic than Roundup for P. lilacinum. Our results showed that pure glyphosate toxicity can be only partially addressed by the pH decrease determined in the culture medium. In conclusion, our study emphasises the noteworthy potential of P. lilacinum in glyphosate degradation.

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Effect of seventeen pesticides on mycelial growth of Akanthomyces, Beauveria, Cordyceps and Purpureocillium strains.

Cited by 5 publications

References 0 publications

Biocontrol Effects of Paecilomyces variotii against Fungal Plant Diseases

Biocontrol Effects of Paecilomyces variotii against Fungal Plant Diseases

Compatibility of Entomopathogenic Fungi, Beauvaria bassiana (Bals. -Criv.) Vuill. and Metarhizium anisopliae (Metchn) Sorokin Isolates with Different Agrochemicals Commonly Used in Vineyards.

Glyphosate-Eating Fungi: Study on Fungal Saprotrophic Strains’ Ability to Tolerate and Utilise Glyphosate as a Nutritional Source and on the Ability of Purpureocillium lilacinum to Degrade It

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