<i>Salvia officinalis</i> Extract Can Protect Grapevine Against <i>Plasmopara viticola</i>

Dagostin, S.; Formolo, T.; Giovannini, O.; Pertot, I.; Schmitt, Annegret

doi:10.1094/pdis-94-5-0575

Cited by 33 publications

(32 citation statements)

References 37 publications

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“…Entretanto, Dagostin et al (2010) demonstram que o extrato etanólico de plantas medicinais, como a sálvia (Salvia officinalis L.) -planta pertencente a mesma família do alecrim, Lamiaceae -, pode ser uma alternativa no controle de doenças da videira, pois a aplicação do extrato reduziu em 63% a AACPD do míldio em folhas de videira e em 94% a incidência da doença em cachos de uva.…”

Section: Resultsunclassified

“…Segundo Dagostin et al (2010), plantas de videira 'Cabernet Sauvignon' tratadas com 50 mL L -1 do extrato etanólico de sálvia apresentaram aumento maior que 100% na produção por planta do que a testemunha, em dois anos consecutivos de avaliação. Os autores também relataram aumento de 97% para massa dos cachos em plantas tratadas com 50 mL L -1 do extrato etanólico de sálvia, em relação à testemunha.…”

Section: Resultsunclassified

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Óleo essencial de alecrim no controle de doenças e na indução de resistência em videira

Maia

Schwan-Estrada

Faria

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi determinar as características químicas do óleo essencial de alecrim e o seu efeito na produtividade, no controle da mancha da folha e do míldio, e na indução de resistência em videira 'Isabel'. O experimento foi realizado em vinhedo comercial, em dois ciclos consecutivos. Os tratamentos consistiram das doses do óleo essencial: 0, 500, 1.000, 2.000 e 4.000 µL L -1 , além dos tratamentos Tween 80%, calda bordalesa, acibenzolar-S-metil e mancozebe. Foram avaliados a severidade da mancha da folha e do míldio, a atividade das enzimas quitinase e catalase, a massa e o número de cachos e as características químicas das uvas. Houve efeito quadrático das doses do óleo essencial de alecrim, para severidade da mancha da folha e do míldio da videira, nos dois ciclos, com resultados semelhantes aos dos tratamentos com calda bordalesa, acibenzolar-S-metil e mancozeb. Também houve aumento no número e na massa dos cachos, bem como na produtividade. O óleo essencial não interferiu nas características químicas das uvas. Observaram-se aumento na atividade da enzima quitinase e redução na atividade da catalase nas folhas. O óleo essencial nas doses de 500, 1.000 e 2.000 μL L -1 é uma alternativa para o controle de doenças da videira 'Isabel'.Termos para indexação: Rosmarinus officinalis, Vitis labrusca, sustentabilidade, viticultura. Rosemary essential oil in the control of diseases and induction of resistance in grapevineAbstract -The objective of this work was to determine the chemical qualities of rosemary essential oil and its effect on productivity, on the control of leaf spot and mildew, and on the induction of resistance in 'Isabel' grapevine. The experiment was carried out in a commercial vineyard, in two consecutive cycles. The treatments consisted of the essential oil doses: 0, 500, 1,000, 2,000, and 4,000 µL L -1 , besides the Tween 80%, bordeaux mixture, acibenzolar-S-methyl, and mancozeb treatments. Severity of leaf blight and mildew, the activity of chitinase and catalase enzymes, and mass and number of clusters and chemical characteristics of grapes were evaluated. There was a quadratic effect as affected by the doses of essential rosemary oil, for severity of leaf spot and mildew in grapevine, in both cycles, with results similar to those of bordeaux mixture, acibenzolar-S-methyl, and mancozeb. There was also an increase in the number and mass of clusters, as well as in productivity. The essential oil did not affect the chemical characteristics of grapes. An increase in the activity of the chitinase enzyme and a decrease in the catalase activity were observed in leaves. Essential oil at the doses of 500, 1,000, and 2,000 µL L -1 is an alternative for the control of diseases in 'Isabel' grapevine.

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Section: Resultsunclassified

Óleo essencial de alecrim no controle de doenças e na indução de resistência em videira

Maia

Schwan-Estrada

Faria

et al. 2014

Pesq. agropec. bras.

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“…When applied as a stand‐alone strategy in a screening vineyard in CH‐Frick, efficacies of up to 68% were reached. In previous studies, only two extracts (from M. alternifolia and S. officinalis) reached similar efficacies in the same screening vineyard, while most other tested plant extracts (from I. viscosa, A. sibirica, Q. saponaria and Camellia oleifera) were less efficient . Yet, the efficacy of larch extracts alone was lower than the efficacy of the references (copper and Strategy).…”

Section: Discussionmentioning

confidence: 87%

Reducing copper use in the environment: the use of larixol and larixyl acetate to treat downy mildew caused by Plasmopara viticola in viticulture

Thuerig

James

Schärer

et al. 2017

Pest Management Science

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“…Several studies on grapevine have confirmed that EOs could be an efficient alternative treatment against P. viticola . Dagostin et al (2011) used Salvia officinalis EO at concentration of 50 mL/L on potted Pinot gris vines in greenhouses, and on Carbernet Sauvignon in field trials (29). The efficiency was here also much lower in the field due to previously mentioned reasons.…”

Section: Resultsmentioning

confidence: 99%

Oregano essential oil vapour preventsPlasmopora viticolainfection in grapevine (Vitis Vinifera) by triggering autoimmune metabolic pathways

Rienth

Crovadore

Ghaffari

et al. 2019

Preprint

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The reduction of synthetic fungicides in agriculture a major challenge in maintaining sustainable production, protecting the environment and consumers’ health. Downy mildew caused by the oomycete Plasmopora viticola is the major pathogen in viticulture worldwide and responsible for up to 60% of pesticide treatments. Alternatives to reduce fungicides are thus utterly needed to ensure sustainable vineyard-ecosystems, consumer health and public acceptance. Essential oils (EOs) are amongst the most promising natural plant protection alternatives and have shown their antibacterial, antiviral and antifungal properties on several agricultural crops. However, the efficiency of EOs highly depends on timing, application method and the molecular interactions between the host, the pathogen and EO. Despite proven EO efficiency, the underlying processes are still not understood and remain a black box. The objectives of the present study were: a) to evaluate whether a continuous fumigation of a particular EO can control downy mildew in order to circumvent the drawbacks of direct application, b) to decipher molecular mechanisms that could be triggered in the host and the pathogen by EO application and c) to try to differentiate whether essential oils directly repress the oomycete or act as plant resistance primers.A custom-made climatic chamber was used for a continuous fumigation of potted vines with different EOs during long-term experiments. The grapevine (Vitis vinifera) cv Chasselas was chosen in reason of its high susceptibility to Plasmopara viticola. Grapevine cuttings were infected with P. viticola. and subsequently exposed to continuous fumigation of different EOs at different concentrations, during 2 application time spans (24 hours and 10 days). Experiments were stopped when infection symptoms were clearly observed on the leaves of the control plants. Plant physiology (photosynthesis and growth rate parameters) were recorded and leaves were sampled at different time points for subsequent RNA extraction and transcriptomics analysis. Strikingly, the Oregano vulgare essential oil vapour treatment during 24h post-infection proved to be sufficient to reduce downy mildew development by 95%. Total RNA was extracted from leaves of 24h and 10d treatments and used for whole transcriptome shotgun sequencing (RNA-seq). Sequenced reads were then mapped onto the V. vinifera and P. viticola genomes. Less than 1% of reads could be mapped onto the P. viticola genome from treated samples, whereas up to 30 % reads from the controls mapped onto the P. viticola genome, thereby confirming the visual observation of P. viticola absence in the treated plants. On average, 80 % of reads could be mapped onto the V. vinifera genome for differential expression analysis, which yielded 4800 modulated genes. Transcriptomic data clearly showed that the treatment triggered the plant’s innate immune system with genes involved in salicylic, jasmonic acid and ethylene synthesis and signaling, activating Pathogenenesis-Related-proteins as well as phytoalexin synthesis.These results elucidate EO-host-pathogen interactions for the first time and indicate that the antifungal efficiency of EO is mainly due to the triggering of resistance pathways inside the host plants. This is of major importance for the production and research on biopesticides, plant stimulation products and for resistance-breeding strategiesAuthor SummaryThe reduction of synthetic plant protection products is a major concern of modern agriculture. The oomycetePlasmopora viticolawhich causes downy mildew in grapevine is amongst the most important grapevine pests and responsible for the dispersion of huge amounts of pesticides in vineyards. Among the evaluated alternatives to reduce or replace synthetic pesticides, plant volatile compounds could represent a sustainable solution. Some plant essential oils (EOs) have already shown antifungal capacities. However, their application is often difficult in terms of the right timing of treatment, degradation, bad rainfastness, mixability and phytotoxicity.The aim of the present work was to investigate whether the vapour phase, applied by a continuous fumigation of different EOs, might inhibit the development of downy mildew on grapevine, and in case of proven efficiency, to study the induced transcriptomic changes by RNA-sequencing in an attempt to elucidate the underlaying molecular interactions. Our results showed that the vapour phases ofO. vulgareandT. vulgariswere highly efficient against the pathogen. The study of differentially expressed genes indicated that the EO vapour triggered the main mechanisms of the plant’s innate immune system such as PTI (Pattern-Triggered Immunity) and ETI (Effector Triggered immunity).For the first time these results highlight the effects of EOs vapour on plant genes expression, which is very valuable information for the development of new natural plant protection products, as well as for breeding disease resistant cultivars.

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Salvia officinalis Extract Can Protect Grapevine Against Plasmopara viticola

Cited by 33 publications

References 37 publications

Óleo essencial de alecrim no controle de doenças e na indução de resistência em videira

Óleo essencial de alecrim no controle de doenças e na indução de resistência em videira

Reducing copper use in the environment: the use of larixol and larixyl acetate to treat downy mildew caused by Plasmopara viticola in viticulture

Oregano essential oil vapour preventsPlasmopora viticolainfection in grapevine (Vitis Vinifera) by triggering autoimmune metabolic pathways

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