Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

Fialho, Régis de Oliveira; Papa, Marli de Fátima Stradioto; Panosso, Alan Rodrigo; Cassiolato, Ana Maria Rodrigues

doi:10.1590/0100-29452017015

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…Clove essential oil gave the best results and was followed by mint essential oil. These results were also observed by Shukla et al, (2000), Torre et al, (2014), Mohamed et al, (2016), Deweer et al, (2017), Fialho et al, (2017, Ozer and Ktircioglu (2020) and Al-Hashmi et al, (2020).…”

Section: Discussionsupporting

confidence: 75%

Effect of Plant Extracts, Essential Oils, Growth Regulators and NPK Fertilization on Pseudoperonospora Cubensis the Causal Organism of Squash Downy Mildew Disease

Deraz

Abdel-All

Draz

et al. 2023

Menoufia Journal of Plant Protection

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Downy mildew of squash caused by Pseudoperonospora cubensis is considered one of the serious diseases that affect cucurbits crops in Egypt and all the world. This study was conducted to find alternative safe methods for controlling downy mildew disease. The use of plant extracts, essential oils, growth regulators and foliar fertilization with nitrogen, potassium and phosphorus showed that these treatments reduce disease incidence and lead to a significant increase in yield compared to untreated plants. Growth characteristics of squash plants i.e., plant height, leaf area, root length, shoot length, plant fresh weight and plant dry weight were significantly increased in response to the application of any tested control methods compared to the untreated control plants. Total water content (TWC), relative water content (RWC) and transpiration rate of squash plants were remarkably increased in response to the application of either Gibberellin, black cumin oil, clove oil (10%), mint oil (5%), Thuja extract and/or the fungicide in comparison with the untreated control. Application of the disease control methods to squash plants increased chlorophyll, total sugars content and proline concentration compared to the untreated control plants.

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Section: Discussionsupporting

confidence: 75%

Effect of Plant Extracts, Essential Oils, Growth Regulators and NPK Fertilization on Pseudoperonospora Cubensis the Causal Organism of Squash Downy Mildew Disease

Deraz

Abdel-All

Draz

et al. 2023

Menoufia Journal of Plant Protection

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“…OEOV effects on sporangia release, zoospore mobility or germination are likely also contributing factors for the direct effect on P. viticola sporangia but were not investigated in the present study. Several studies show the direct antimicrobial, insecticidal and antifungal activity of origanum essential oils in different 21 , 38 plant and mammals 21 , 38 ; thus far, only one published study showed that essential oil vapour has a phenotypic effect on P. viticola post-inoculation 20 . OEOV acted in a time- and duration-dependent manner.…”

Section: Discussionmentioning

confidence: 99%

Unravelling molecular mechanisms involved in resistance priming against downy mildew (Plasmopara viticola) in grapevine (Vitis vinifera L.)

Vigneron,

Grimplet,

Remolif

et al. 2023

Sci Rep

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Downy mildew (DM; Plasmopara viticola) is amongst the most severe fungal diseases in viticulture and the reason for the majority of fungicide applications. To reduce synthetic and copper-based fungicides, there is an urgent need for natural alternatives, which are being increasingly tested by the industry and the research community. However, their mode of action remains unclear. Therefore, our study aimed to investigate the transcriptomic changes induced by oregano essential oil vapour (OEOV) in DM-infected grapevines. OEOV was applied at different time points before and after DM infection to differentiate between a priming effect and a direct effect. Both pre-DM treatment with OEOV and post-infection treatment resulted in a significant reduction in DM sporulation. RNA-seq, followed by differential gene expression and weighted gene co-expression network analysis, identified co-expressed gene modules associated with secondary metabolism, pathogen recognition and response. Surprisingly, the molecular mechanisms underlying the efficiency of OEOV against DM appear to be independent of stilbene synthesis, and instead involve genes from a putative signalling pathway that has yet to be characterized. This study enhances our understanding of the molecular regulation of innate plant immunity and provides new insights into the mode of action of alternative natural antifungal agents.

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“…However, essential oils showed chemical instability at longer incubation times. The cinnamon and eucalyptus globulus essential oils were the most antifungal towards the downy mildew of those tested [164].…”

Section: Plant Extractsmentioning

confidence: 94%

“…Additional work with essential oils was conducted by Fialho et al [164] to evaluate the effect of seven essential oils (cinnamon, eucalyptus globulus, marjoram, melaleuca, peppermint, oregano, and white thyme) on spore germination in vitro and in field conditions. All essential oils displayed fungistatic activity and reduced sporulation in varying degrees ranging from 15 to 65% in field conditions [164]. However, essential oils showed chemical instability at longer incubation times.…”

Section: Plant Extractsmentioning

confidence: 99%

Traditional and Emerging Approaches for Disease Management of Plasmopara viticola, Causal Agent of Downy Mildew of Grape

Clippinger,

Dobry,

Laffan

et al. 2024

Agriculture

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The oomycete Plasmopara viticola, which causes downy mildew, is currently one of the most destructive pathogens affecting grape production. Although native to the eastern United States, P. viticola was introduced into Europe in the mid-to-late 1800s and is now found in virtually every grape-growing region of the world. Since its discovery, much effort has been made to understand the life cycle and infection process of the pathogen to develop more effective management practices. Widespread application of fungicides, especially those which have only one mode of action, has led to an increased occurrence of resistance to these treatments. Thus, with increased fungicide resistance and rising environmental concerns surrounding their use, traditional chemical management practices have begun to fall out of favor. Newer approaches, from targeted breeding utilizing quantitative trait loci to biological control agents, are continually being investigated and adapted to limit the damage caused by downy mildew. This review summarizes the current knowledge of the pathogen and methods of its control and explores potential avenues for future research focused on hypovirulence and biological control agents.

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Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

Cited by 7 publications

References 18 publications

Effect of Plant Extracts, Essential Oils, Growth Regulators and NPK Fertilization on Pseudoperonospora Cubensis the Causal Organism of Squash Downy Mildew Disease

Effect of Plant Extracts, Essential Oils, Growth Regulators and NPK Fertilization on Pseudoperonospora Cubensis the Causal Organism of Squash Downy Mildew Disease

Unravelling molecular mechanisms involved in resistance priming against downy mildew (Plasmopara viticola) in grapevine (Vitis vinifera L.)

Traditional and Emerging Approaches for Disease Management of Plasmopara viticola, Causal Agent of Downy Mildew of Grape

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