Efficiency of resistance elicitors in the management of grapevine downy mildew Plasmopara viticola: epidemiological, biochemical and economic aspects

Pinto, Kedma Maria Silva; Nascimento, Luciana Cordeiro do; Gomes, Erbs Cintra de Souza; Silva, Hilderlande Florêncio da; Miranda, Janaína dos Reis

doi:10.1007/s10658-012-0050-1

Cited by 36 publications

(21 citation statements)

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“…The results obtained with FP corroborate those reported by Yáñez et al (2012), which succeeded in applying FP foliar control powdery mildew in cucumber levels above 40%. Similar results were reported by Bécot et al (2000) to Peronospora parasitica in cauliflower; Monsalve et al (2012) to Peronospora destructor in onions and Pinto et al (2012) to Plasmopara viticola on vine.…”

Section: Resultados Y Discusiónsupporting

confidence: 82%

“…Los resultados obtenidos con FP, corroboran lo reportado por Yáñez et al (2012), que al aplicar FP foliarmente lograron controlar a la cenicilla en pepino en niveles superiores a 40%. Resultados similares fueron reportados por Bécot et al (2000), para Peronospora parasítica en coliflor; Monsalve et al (2012), para Peronospora destructor en cebolla y Pinto et al (2012), para Plasmopara viticola en vid. mildew severity than 50%; in all samples, the severity of powdery mildew in the control was statistically superior to the average values obtained by effect of salts, except with SP at 35 ddpa ( Figure 1C).…”

Section: Resultados Y Discusiónunclassified

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Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Juárez

Ruvalcaba

Zavaleta-Mejía

et al. 2017

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ResumenSe evaluó el impacto de sales minerales fosfito de potasio (6 mL L -1 ), fosfito de calcio (10 g L -1 ), sulfato de potasio (17 g L -1 ) y nitrato de calcio (20 g L -1 ) en la cenicilla ocasionada por Oidium sp. en el cultivo de pepino. El experimento se estableció en condiciones de invernadero bajo diseño de bloques completos al azar con seis repeticiones por tratamiento. Por siembra directa, las plantas de pepino (Cucumis sativus L.) cv 'Zapata' se hicieron crecer en bolsas de plástico con capacidad de 4.5 kg y sustrato de coco (70% fibra gruesa y 30% fibra fina); cuando las plantas (dos por maceta) tuvieron cinco hojas verdaderas, se aplicaron al follaje soluciones de los tratamientos con un atomizador manual, en cinco ocasiones con intervalos de 7 días. La infección por cenicilla en las plantas se desarrolló de manera natural. Se evaluó la altura de planta, número de hojas, área foliar, verdor foliar, número de hojas enfermas e incidencia y severidad de cenicilla. No hubo diferencia significativa (p≤ 0.05) en las variables altura, área foliar, verdor y número de hojas en las plantas evaluadas. La mayor protección contra cenicilla (Oidium sp.) se obtuvo con las aplicaciones de nitrato de calcio y fosfito de potasio, superando aquella proporcionada por fosfito de calcio y sulfato de potasio. El AbstractThe impact of mineral salts potassium phosphite (6 mL L -1 ) phosphite calcium (10 g L -1 ), potassium sulfate (17 g L -1 ) and calcium nitrate (20 g L -1 ) was assessed on powdery mildew caused by Oidium sp. in cucumber cultivation. The experiment was established in greenhouse conditions under design randomized complete block with six replicates per treatment. The direct sowing, cucumber plants (Cucumis sativus L.) cv 'Zapata' were grown in plastic bags with a capacity of 4.5 kg and coconut substrate (70% coarse fiber and 30% fine fiber); when plants (two per pot) had five true leaves, they were applied to foliage treatment solutions with a manual atomizer, five times at intervals of 7 days. The powdery mildew infection in plants evolved naturally. The plant height, leaf number, leaf area, leaf greenness, number of diseased leaves and incidence and severity of powdery mildew was evaluated. There was no significant difference (p≤ 0.05) in the variables height, leaf area, greenery and number of leaves in plants evaluated. The greatest protection against powdery mildew (Oidium sp.) was obtained with the application of calcium nitrate and potassium phosphite, phosphite surpassing that provided by calcium and potassium sulfate. Calcium nitrate and 1552 Rev. Mex. Cienc. Agríc. Vol.7 Núm. 7 28 de septiembre -11 de noviembre, 2016Moisés Gilberto Yáñez Juárez et al.nitrato de calcio y fosfito de potasio en dosis de 20 g y 6 mL L -1 de agua, respectivamente, constituyen una alternativa para el manejo de la cenicilla en pepino.Palabras clave: Cucumis sativus, fosfito de potasio, nitrato de calcio. IntroducciónEn México, la cenicilla de las cucurbitáceas es una enfermedad foliar común en plantas cultivadas y silvest...

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Section: Resultados Y Discusiónsupporting

confidence: 82%

Section: Resultados Y Discusiónunclassified

Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Juárez

Ruvalcaba

Zavaleta-Mejía

et al. 2017

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“…Grapevine (Vitisvinifera) is one of the major fruit crops worldwide [1]. However, grapevine downy mildew, one of the most destructive diseases caused by Plasmopara viticola (P. viticola) [2], can lead to significant reduction (by 20%-30%) of yield [3][4][5]. Disease management has been one of the major tasks for viticulture after the infection of the plant by downy mildew [6].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide-Fe3O4 nanocomposites as high-performance antifungal agents against Plasmopara viticola

et al. 2017

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Plasmopara viticola, a causal agent of grapevine downy mildew, is a widely distributed pathogen, which can cause destructive disease in field-grown grapevines. Although fungicides are used to treat the disease, fungicide-resistant strains have been emerging. In this study, we developed graphene oxide (GO)-Fe3O4 nanocomposites, which could effectively repress the germination of sporangia and inhibit the development of downy mildew. 50 μg mL −1 GO-Fe3O4 showed excellent protective and fungicidal activities. 250 μg mL −1 GO-Fe3O4 on grapevine leaves in the field could significantly decrease the severity of downy mildew, suggesting its potent curative effect. Moreover, GO-Fe3O4 had no significant toxic effects on grapevine plants even at the concentration twice that of the highest dosage (1000 μg mL −1) used in this study. Our work suggested that GO-Fe3O4 would offer an important opportunity to develop new approach for controlling plant diseases.

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“…Several molecules have been shown to increase resistance to downy mildew in susceptible grapevines, such as chitosan (Aziz et al, 2006), laminarin (Aziz et al, 2003), sulphated laminarin (Trouvelot et al, 2008;Steimetz et al, 2012), oligogalacturonide (All egre et al, 2009), b-aminobutyric acid (BABA) (Hamiduzzaman et al, 2005), fosetyl-aluminium (Dercks & Creasy, 1989), thiamine (Boubakri et al, 2012) and benzothiadiazole-7-carbothioic acid S-methyl ester (BTH) (Perazzolli et al, 2008), as well as combinations of different resistance inducers (Reuveni et al, 2001;Pinto et al, 2012). Application of plant extracts or microbial agents can also induce resistance to downy mildew in grapevine, for example Rheum palmatum (Godard et al, 2009) and Solidago canadensis (Harm et al, 2011) plant extracts, organic amendments (Thuerig et al, 2011), the beneficial microorganisms Aureobasidium pullulans (Harm et al, 2011) and Trichoderma harzianum T39 (T39) (Perazzolli et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Characterization of resistance mechanisms activated by Trichoderma harzianum T39 and benzothiadiazole to downy mildew in different grapevine cultivars

et al. 2013

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Downy mildew, caused by Plasmopara viticola, is one of the most destructive diseases of grapevine and is controlled with intense application of chemical fungicides. Treatment with Trichoderma harzianum T39 (T39) or benzothiadiazole-7-carbothioic acid S-methyl ester (BTH) has been previously shown to activate grapevine resistance to downy mildew and reduce disease symptoms in the Pinot noir cultivar. However, enhancement of plant resistance can be affected by several factors, including plant genotype. In order to further extend the use of resistance inducers against downy mildew, the physiological and molecular properties of T39-and BTH-activated resistance in different cultivars of table and wine grapes were characterized under greenhouse conditions. T39 treatment reduced downy mildew symptoms, but the degree of efficacy differed significantly among grapevine cultivars. However, efficacy of BTH-activated resistance was consistently high in the different cultivars. Expression profiles of defence-related genes differed among cultivars in response to resistance inducers and to pathogen inoculation. T39 treatment enhanced the expression of defence-related genes in the responsive cultivars, before and after P. viticola inoculation. A positive correlation between the efficacy of T39 and the expression level of defence-related genes was found in Primitivo and Pinot noir plants, while different genes or more complex processes were probably activated in Sugraone and Negroamaro. The data reported here suggest that the use of a responsive cultivar is particularly important to maximize the efficacy of resistance inducers and new natural inducers should be explored for the less responsive cultivars.

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Efficiency of resistance elicitors in the management of grapevine downy mildew Plasmopara viticola: epidemiological, biochemical and economic aspects

Cited by 36 publications

References 21 publications

Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Sales minerales para el control de la cenicilla (Oidium sp.) en pepino

Graphene oxide-Fe3O4 nanocomposites as high-performance antifungal agents against Plasmopara viticola

Characterization of resistance mechanisms activated by Trichoderma harzianum T39 and benzothiadiazole to downy mildew in different grapevine cultivars

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