Effectiveness of antifungal compounds against rose powdery mildew (Sphaerotheca pannosa var. rosae) in glasshouses

Pasini, C.; D'Aquila, F.; Curir, P.; Gullino, M. L.

doi:10.1016/s0261-2194(96)00095-6

Cited by 95 publications

(52 citation statements)

References 17 publications

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“…For the control of powdery mildew, several attempts have been made in order to develop antifungal compounds of various origins such as free water, sodium bicarbonate, plantderived natural compounds, and biocontrol microorganisms (Pasini et al, 1997;Copping and Menn, 2000). These are considered to be more environmentally friendly than conventional fungicides.…”

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confidence: 99%

“…These are considered to be more environmentally friendly than conventional fungicides. Among them, plant oils and their salts (M-pede and Naturell), plant extracts of Reynoutria sachalinensis (Milsana), Allium sativum (Ajoene), and Azadirachta indica (Neemazal) effectively controlled powdery mildew of crops (BCPC, 2001;Copping and Menn, 2000;Dik and Van Der Staay, 1995;Herger and Klingauf, 1990;McGrath and Shishkoff, 1999;Pasini et al, 1997;Prithiviraj et al, 1998;Singh et al, 1995).…”

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Antifungal Activity of Lower Alkyl Fatty Acid Esters against Powdery Mildews

Choi¹,

Jang²,

Choi³

et al. 2010

The Plant Pathology Journal

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In the course of a searching environmental friendly antifungal compounds, we found that mixture of methyl esters of fatty acids obtained from soybean oil had potent control efficacy against barley powdery mildew (Blumeria graminis f. sp. hordei). In this study, ten alkyl fatty acid esters (AFAEs) were tested for in vivo antifungal activity against five plant diseases such as rice blast, rice sheath blight, tomato gray mold, tomato late blight and barley powdery mildew. Some AFAEs showed the most control efficacy against barley powdery mildew among the tested plant diseases. By 5-hr protective and 1-day curative applications, six AFAEs (3,000 µg/ml), including methyl and ethyl palmitates, methyl and ethyl oleates, methyl linoleate, and methyl linolenate demonstrated both curative and protective activities against barley powdery mildew. In contrary, methyl laurate strongly controlled the development of powdery mildew on barley plants by curative treatment at a concentration of 333 µg/ml, but did not show protective activity even at 3,000 µg/ml. Under greenhouse conditions, the seven AFAEs (1,000 µg/ml) except for methyl and ethyl stearates, and methyl caprylate also effectively controlled cucumber powdery mildew caused by Podosphaera xanthii. Among them, methyl and ethyl palmitates (333 µg/ml) represented the most control activity of more than 68% against the disease. The results are the first report on the antifungal activity of methyl and ethyl esters of fatty acids against plant pathogenic fungi.

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Antifungal Activity of Lower Alkyl Fatty Acid Esters against Powdery Mildews

Choi¹,

Jang²,

Choi³

et al. 2010

The Plant Pathology Journal

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“…Dentre os principais produtos alternativos testados, alguns são compostos de um ou vários sais de potássio, fosfato, sódio, silício, cálcio, argila e materiais anti-transpirantes (9, 14, 18, 26), biofertilizantes (2, 3), extratos de plantas (16,23), óleos vegetais e sintéticos (16) e leite e soro de leite (3, 4, 7). A combinação de mais de um método alternativo pode ter efeito aditivo ou sinergístico como foi observado por Ziv & Zitter (26).…”

Section: Introductionunclassified

Efeito de bicarbonato de potássio sobre a severidade do oídio em plantas de soja

2013

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RESUMOPalavras-chave adicionais: bicarbonato, produtos biocompatíveis, doenças da soja, oídio, Erysiphe diffusa.The soybean powdery mildew, caused by Erysiphe diffusa, is considered a sporadic disease which can cause losses when it reaches epidemic proportions. This study aimed to evaluate the efficiency of potassium bicarbonate (Kaligreen ® ) in controlling soybean powdery mildew. Sprays of both potassium bicarbonate at concentrations of 0, 0 .25%, 0.5%, 0.75% and 1.0% and fungicide (pyraclostrobin + epoxiconazole), as well as assessments, were weekly carried ou t. Leaves were collected for Medice, R.; Bettiol, W.; Altéa, U.Q.M. Effect of potassium bicarbonate on the severity of powdery mildew in soybean plants. Summa Phytopathologica, v.39, n.1, p. 35-39, 2013. ultrastructu ral ana lysis by scanning electron microscopy. Potassium bicarbonate controlled the disea se at all concentrations bu t caused phytotoxicity from 0.5%. In the ultrastructural analysis, the product had a direct action on the pathogen, causing wilting and reduction in conidiu m germina tion. The product has the potentia l to control the disease, but the concentration to be recommended should be adequate, as well as the frequency of application to prevent phytotoxicity problems.O oídio da soja, causado por Erysiphe diffusa, é considerado uma doença esporádica podendo ocasionar perdas quando atinge proporções epidêmica s. O tra ba lho teve por objetivo a va lia r a eficiência de bicarbonato de potássio (Kaligreen ® ) no controle do oídio da soja. As pulveriza ções do bica rbonato de potássio na s concentra ções de 0 ; 0 ,2 5 %, 0 ,5 %, 0 ,7 5 % e 1 ,0 % e do fu ngicida (pira clostrobina + epoxicona zole) e a s a va lia ções fora m sema na is. Folha s fora m coletadas para análise ultraestrutural através da microscopia eletrônica Medice, R.; Bettiol, W.; Altéa, U.Q.M. Efeito de bicarbonato de potássio sobre a severidade do oídio em plantas de soja. Summa Phytopathologica, v.39, n.1, p.35-39, 2013. de varredura. O bicarbonato de potássio controlou a doença em todas a s concentra ções, mas ca usou fitotoxicidade a partir de 0 ,5 %. Na analise ultraestrutural pode-se observar que o produto apresentou ação direta sobre o pa tógeno oca siona ndo mu rcha mento e redu çã o na germinação dos conídios. O produto apresenta potencial para controlar a doença, porém deve ser adequada a concentração a ser recomenda, bem como a frequ ência de a plicaçã o pa ra evitar os problema s de fitotoxicidade.

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“…*Address correspondence to this author at the Dipartimento di Scienze Molecolari Agroalimentari -DISMA, Sezione di Chimica, Università degli Studi di Milano,via Celoria 2, 20133 Milano, Italy; E-mail: gigliola.borgonovo@unimi.it Fatty acid oils are reported to have antifungal activity too [11,12], and their effectiveness against powdery mildews has been proved and recently confirmed [13,14]. This activity is due to a direct effect on the growth of fungi [15] and to an indirect effect through the activation of defence responses by the plant.…”

Section: Introductionmentioning

confidence: 99%