Toward Integrated Management of Monosporascus Wilt of Melons in Israel

Cohen, R.; Pivonia, Shimon; Burger, Y.; Edelstein, M.; Gamliel, A.; Katan, J.

doi:10.1094/pdis.2000.84.5.496

Cited by 91 publications

(69 citation statements)

References 25 publications

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“…The increased vigor from the rootstock allows the plant to develop despite the pathogen (Cohen et al 2000). Grimault et al (1994) suggested that resistant rootstocks physically limit the movement of bacteria from the soil to the scion.…”

Section: Introductionmentioning

confidence: 99%

Impact of Grafting on Watermelon Growth, Fruit Yield and Quality

Mohamed

El-Hamed

Elwan

et al. 2012

Journal of Fruit and Ornamental Plant Research

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SummaryGrafting is an alternative approach to reduce crop damage resulting from soil-borne pathogens and increases plant abiotic stress tolerance, which in turn increases crop production. The purpose of this study was to determine whether grafting could improve plant growth and fruit quality of watermelon through monitoring the changes induced by different rootstock-scion combinations. Watermelon (Citrullus lanatus) cv. Aswan F 1 was grafted into five rootstocks (Nun 6001 F 1 , Strongtosa F 1 , Tetsukabuto F 1 , Ferro F 1 and Shintoza F 1 ) hybrids between Cucurbita maxima and Cucurbita moschata. Highest vegetative growth and fruit yield were obtained by 'Nun 6001 F 1 ' as a rootstock using the tongue approach method. Grafting reduced significantly sex ratio by reducing the number of male flowers. Grafting increased significantly lycopene content in fruit flesh by 57% over the control treatment, but did not affect soluble solids content (SSC). One third of the control non-grafted plants died and Fusarium oxysporum was isolated as the responsible pathogen. These results indicate that grafting watermelon onto specific rootstock influences growth, productivity, and quality of the fruit as well as disease resistance. Grafting can be suggested as an alternative method to control of Fusarium wilt in watermelon production.

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Section: Introductionmentioning

confidence: 99%

Impact of Grafting on Watermelon Growth, Fruit Yield and Quality

Mohamed

El-Hamed

Elwan

et al. 2012

Journal of Fruit and Ornamental Plant Research

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“…In studies conducted in Israel, fluazinam totally inhibited the growth of M. cannonballus in culture at concentrations of 10 µg a.i./L (Cohen et al, 1999;Cohen et al, 2000). The lack of correlation between sensitivity to fungicide fluazinam and disease severity in melon indicates that there was no fitness cost in virulence associated with fungicide sensitivity.…”

Section: Discussionmentioning

confidence: 96%

“…In recent years, the expansion of the cultivated area, coupled with intensive and continuous cultivation of melon without crop rotation, has contributed to the increased incidence of fungal diseases affecting the root system. Monosporascus root rot and vine decline (MRRVD) caused by the soilborne ascomycete Monosporascus cannonballus Pollack & Uecker is one of the most important melon yield-limiting diseases in the Brazilian northeast (Silva et al, 2010;Bezerra et al, 2013), as in other melon-production regions located in hot semi-arid to arid regions, as well as subtropical environments worldwide (Martyn & Miller, 1996;Cohen et al, 2000;Cohen et al, 2012;Ben Salem et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…No melon cultivar resistant to M. cannonballus is commercially available (Fita et al, 2009;Cohen et al, 2012) and chemical control of this pathogen in many circumstances has been unsatisfactory and/or uneconomical (Cohen et al, 2000;Fita et al, 2007;Cohen et al, 2012). Currently, in Brazil there are no fungicides registered for the control of MRRVD (AGROFIT, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Fitness components of Monosporascus cannonballus isolates from northeastern Brazilian melon fields

Correia¹,

Silva²,

Câmara³

et al. 2014

Trop. plant pathol.

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Monosporascus root rot and vine decline caused by Monosporascus cannonballus is one of the most important melon yieldlimiting diseases in northeastern Brazil. This study investigated the fitness components of 57 isolates of M. cannonballus obtained from Brazilian melon fields by evaluating: i) their mycelial growth rate (MGR), and perithecia and ascospore production (PP and AP) on potato dextrose agar (PDA); ii) their sensitivity to the fungicide fluazinam; and iii) their virulence to melon seedlings. All M. cannonballus isolates showed variability in their MGR, PP and AP values. They were sensitive to the fungicide fluazinam, showing some degree of mycelial growth inhibition (MGI), and were pathogenic to melon seedlings, with a mean disease severity index (DSI) of 62.1%. By univariate analysis, the formation of groups of similarity amongst the isolates of M. cannonballus within each variable was not limited by the area of origin of each isolate, given that in most situations, different isolates of the same area were distributed into distinct groups of similarity. A multivariate cluster analysis allowed the separation of the 57 M. cannonballus isolates in 18 groups of similarity. The fitness variability among M. cannonballus isolates found in this study should be considered when possible sources of resistance are evaluated in melon breeding programs.

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“…Today is reported in several countries such as India, southern Spain, United States, Saudi Arabia, Central America, Japan, Taiwan and Tunisia (Cohen et al, 2000). This disease was reported on melon for the first time in Brazil in the states of Rio Grande do Norte and Ceará in 2002 (Sales Júnior et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Densidade de Monosporascus cannonballus em solos sob diferentes cultivos no Estado do Rio Grande do Norte

Medeiros

Silva

Oliveira

et al. 2008

Agraria

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A B S T R A C TThis paper aimed to quantify Monosporascus cannonballus ascospores population density in soils cultivated with different crops. The soil samples were collected from 10 plots cultivated with cotton, mango, beans, papaya, chili, watermelon, acerola, banana, coconut and cantaloupe melons, and from one uncultivated area, located in the State of Rio Grande do Norte, Brazil. Ascospores were extracted by means of a modified method of flotation in saccharosis and quantified under stereoscopic microscope at 60X. Ascospores of M. cannonballus were detected in all studied soil samples and the means differed significantly (p<0.05) among the sampled areas. Ascospore average density was significantly higher in the soil cultivated with cantaloupe melons (pathogen hosts), reaching 8.09 ascospores g -1 , followed by the mean densities quantified in the mango, watermelon and acerola areas, with 2.00; 2.60 and 2.10 ascospores g -1 , respectively. These results did not differ significantly among them, but differed significantly from the means quantified in the areas cultivated with beans, chili, papaya, cotton, banana and coconut, which, in turn, did not differ significantly from the results of the uncultivated soil.Key words: ascospore extraction, inoculum, vine decline Densidade de Monosporascus cannonballus em solos sob diferentes cultivos no Estado do Rio Grande do Norte R E S U M OPropôs-se, neste trabalho quantificar a densidade populacional de Monosporascus cannonballus em solos com diferentes cultivos. As amostras foram coletadas em 10 áreas cultivadas com algodão, manga, feijão, mamão, pimentão, melancia, acerola, banana, coco e melão e em uma de área sem cultivo, localizadas no Estado do Rio Grande do Norte, Brasil. Os ascósporos foram extraídos mediante o método de flotação em sacarose modificado e quantificados em microscópio estereoscópico a 60x. Ascósporos de M. cannonballus foram detectados em todas as amostras de solo analisadas e houve diferença significativa (p<0,05) na densidade média de ascósporos entre as áreas analisadas. A densidade média de ascósporos foi significantemente superior no solo cultivado com meloeiro (espécie hospedeira do patógeno), com 8,09 ascósporos g -1 de solo, seguido dos solos cultivados com manga, melancia e acerola, apresentando 2,00; 2,60 e 2,10 ascósporos g -1 , respectivamente; esses resultados não diferiram significativamente entre si mas sim, em relação às médias quantificadas nas áreas com feijão, pimentão, mamão, banana e coco que, por sua vez, não diferiram significativamente dos resultados apresentados pelo solo não cultivado.

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Toward Integrated Management of Monosporascus Wilt of Melons in Israel

Cited by 91 publications

References 25 publications

Impact of Grafting on Watermelon Growth, Fruit Yield and Quality

Impact of Grafting on Watermelon Growth, Fruit Yield and Quality

Fitness components of Monosporascus cannonballus isolates from northeastern Brazilian melon fields

Densidade de Monosporascus cannonballus em solos sob diferentes cultivos no Estado do Rio Grande do Norte

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