First report of <i>Peronospora sp</i>. on sweet basil (<i>Ocimum basilicum)</i> in Cuba

Parte, Einar Martínez de la; Pérez-Vicente, Luis; Bernal, Bibian Katherine Argüello; García, Danilo Augusto Monsalve

doi:10.1111/j.1365-3059.2009.02249.x

Cited by 21 publications

(10 citation statements)

References 2 publications

(6 reference statements)

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“…nov. (Belbahri et al 2005;Thines et al 2009), is threatening the production of sweet basil worldwide. The disease was first discovered in Uganda in 1933 (Hansford 1933), and its devastating impact has recently been reported from many countries (Garibaldi et al 2004b(Garibaldi et al , 2005Martı´nez-de la Parte et al 2010;McLeod et al 2006;Ronco et al 2008;Voglmayr and Piatek 2008). In the United States, basil downy mildew has spread rapidly because its first report from South Florida in the fall of 2007 ).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Acibenzolar‐S‐Methyl and β‐Aminobutyric Acid for Control of Downy Mildew in Greenhouse Grown Basil and Peroxidase Activity in Response to Treatment with these Compounds

Mersha

Zhang

et al. 2012

Journal of Phytopathology

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Downy mildew, caused by the oomycete pathogen Peronospora belbahrii, is a devastating foliar disease of basil in the United States and worldwide. Currently there are very few chemistries or organic choices registered to control this disease. In this study, two systemic acquired resistance (SAR) inducers, acibenzolar‐S‐methyl (ASM) and β‐aminobutyric acid (BABA), were evaluated for their in vitro effects on the pathogen, for their potential to control basil downy mildew in greenhouses, and for changes in peroxidase activity in basil plants treated with these two SAR inducers. No significant inhibition of sporangial germination was detected in water agar amended with ASM at concentrations lower than 100 mg/l or with BABA at concentrations lower than 500 mg/l. Efficacy of ASM and BABA in greenhouses varied depending on the rate, method and timing of application. The area under the disease progress curve (AUDPC) of disease severity was significantly reduced compared to the non‐treated control when ASM was sprayed (in all experiments) or drenched (in one out of two experiments) pre‐, or pre‐ + post‐inoculation at rates of 25–400 mg/l. Three weekly post‐inoculation sprays of ASM at the rate of 50 mg/l reduced AUDPC by 93.0 and 47.2% when started 3 and 7 days after inoculation (DAI), respectively. The AUDPC of disease severity was also significantly reduced when BABA was sprayed pre‐ + post‐inoculation at rates of 125–500 mg/l. According to the prediction using a log‐logistic function, 50% maximum disease protection was achieved at a concentration of 27.5 mg/l of ASM. Basil plants treated with these two SAR inducers and challenged with the pathogen showed significantly higher peroxidase activity than the non‐treated control at 8 DAI. Temporally, the highest activity of peroxidase was detected at 8 DAI, decreased at 15 DAI and waned further at 23 DAI.

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Section: Introductionmentioning

confidence: 99%

Efficacy of Acibenzolar‐S‐Methyl and β‐Aminobutyric Acid for Control of Downy Mildew in Greenhouse Grown Basil and Peroxidase Activity in Response to Treatment with these Compounds

Mersha

Zhang

et al. 2012

Journal of Phytopathology

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“…(Hansford, 1933) and later, in the 2000s, reported as responsible of increasingly serious losses in several countries, starting from Switzerland (Lefort et al 2003), Italy (Garibaldi et al 2004a), Belgium (Coosemans, 2004), France (Garibaldi et al 2005), and including USA (Roberts et al 2009), Cuba (Martinez de la Parte et al 2010), and Hungary (Nagy and Horvath, 2011). Nowadays, downy mildew has been observed wherever basil is grown as herb crop as well as for pesto sauce production.…”

Section: Introductionmentioning

confidence: 94%

Seed dressing to control downy mildew of basil

et al. 2015

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Four experimental trials were carried out in order to evaluate the efficacy of different products (chemicals, resistance inducers and natural products) as well as heat air when applied to basil seeds naturally infested by Peronospora belbahrii, the causal agent of downy mildew of basil, a pathogen which is seed transmitted. Seed quality, as vigour index, was also evaluated. In general, seed treatment had a positive effect on the reduction of disease incidence and on plant biomass at the end of each trial, with very satisfactory results when disease incidence was lower than 10% and still satisfactory results with a higher disease incidence. Although many of the fungicides, resistance inducers and thyme oil treatments tested showed a significant disease reduction compared with the untreated control, the protection offered was only partial. Moreover, the effectiveness of the tested seed treatments varied considerably between the trials. The seeds treatment with heat air (65°C for 10 min) significantly reduced the number of infected plants per container. The interaction effect between the fungicides (at the lowest dosage tested, with the exception of acibenzolar-S-methyl, and dimethomorph), thyme oil and the heat air treatment was also significant. In terms of biomass, most treatments not significantly improved the fresh weight in comparison with the untreated control. The highest biomass was observed in the plots where seeds were dressed with mancozeb combined with heat air. Interestingly, thiram is also effective against other pathogens affecting basil and the thermal treatment and potassium phosphite are fully compatible with the rules of organic farming. Seed dressing represents the starting point of a full integrated approach for downy mildew management.

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“…Basil, primarily sweet basil, is used for fragrance, flavour, fresh culinary and dried herb industries (Simon et al 1990(Simon et al , 1999. However, downy mildew caused by Peronospora belbahrii has become destructive for basil production worldwide (Garibaldi et al 2004(Garibaldi et al , 2005; Mart ınez de la Parte et al 2010;McGrath et al 2010;McLeod et al 2006;Nagy and Horv ath 2011;Ronco et al 2008;Voglmayr and Piątek 2008;Wyenandt et al 2015). However, downy mildew caused by Peronospora belbahrii has become destructive for basil production worldwide (Garibaldi et al 2004(Garibaldi et al , 2005; Mart ınez de la Parte et al 2010;McGrath et al 2010;McLeod et al 2006;Nagy and Horv ath 2011;Ronco et al 2008;Voglmayr and Piątek 2008;Wyenandt et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, high demand and high dollar value of fresh market basil lead to increased field and greenhouse production of basil (Dekalb et al 2014;Wyenandt et al 2015). However, downy mildew caused by Peronospora belbahrii has become destructive for basil production worldwide (Garibaldi et al 2004(Garibaldi et al , 2005; Mart ınez de la Parte et al 2010;McGrath et al 2010;McLeod et al 2006;Nagy and Horv ath 2011;Ronco et al 2008;Voglmayr and Piątek 2008;Wyenandt et al 2015). In the United States, downy mildew of basil was first detected in Homestead, Florida, in 2007 (Roberts et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Red Light Increases Suppression of Downy Mildew in Basil by Chemical and Organic Products

Patel

Zhang

McGrath

2016

Journal of Phytopathology

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Basil is an economically important herb in the United States and in the world. Recent epidemics of basil downy mildew, caused by Peronospora belbahrii, have significantly affected basil production in the United States. ProPhyt (potassium phosphite), Actigard (acibenzolar‐S‐methyl) and Organocide (sesame oil) were evaluated in the greenhouse in the presence or absence of red light for their effects on the severity of downy mildew and sporangial production by P. belbahrii. Red light at intensity of 12 μmol photons/m2/s significantly (P < 0.05) reduced severity of downy mildew in basil. ProPhyt‐treated basil plants had the lowest disease severity irrespective of red light exposure. Basil plants treated with Actigard and Organocide under red light had significantly lower disease severity compared to plants under dark conditions with the same fungicide treatments 14 and 13 days after inoculation (DAI) in experiments 1 and 2, respectively. Red light significantly reduced AUDPC in the treatments of Actigard and Organocide in both experiments. Basil plants treated with Actigard and Organocide under red light had significantly reduced number of P. belbahrii sporangia than those under dark conditions receiving the same fungicide treatments. This is the first report demonstrating red light in combination with Actigard and Organocide for improved management of downy mildew in greenhouse‐grown basil.

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First report of Peronospora sp. on sweet basil (Ocimum basilicum) in Cuba

Cited by 21 publications

References 2 publications

Efficacy of Acibenzolar‐S‐Methyl and β‐Aminobutyric Acid for Control of Downy Mildew in Greenhouse Grown Basil and Peroxidase Activity in Response to Treatment with these Compounds

Efficacy of Acibenzolar‐S‐Methyl and β‐Aminobutyric Acid for Control of Downy Mildew in Greenhouse Grown Basil and Peroxidase Activity in Response to Treatment with these Compounds

Seed dressing to control downy mildew of basil

Red Light Increases Suppression of Downy Mildew in Basil by Chemical and Organic Products

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