Advances in the Biology and Management of Monosporascus Vine Decline and Wilt of Melons and Other Cucurbits

Cohen, Roni; Pivonia, Shimon; Crosby, Kevin; Martyn, R. D.

doi:10.1002/9781118100592.ch2

Cited by 19 publications

(45 citation statements)

References 122 publications

(175 reference statements)

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“…This soilborne fungus has been reported in the main production areas of melon ( Cucumis melo L.) and watermelon [ Citrullus lanatus (Thunb.) Matsum & Nakai] cultivation in Brazil (Sales Júnior et al., , ) and in other 21 countries worldwide (Al‐Mawaali, Al‐Sadi, Al‐Said, & Deadman, ; Cohen, Pivonia, Crosby, & Martyn, ; Yan, Zang, Huang, & Wang, ).…”

Section: Introductionmentioning

confidence: 99%

Cotton, cowpea and sesame are alternative crops to cucurbits in soils naturally infested withMonosporascus cannonballus

Júnior

Balbino

Negreiros

et al. 2018

Journal of Phytopathology

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Monosporascus cannonballus is an important cucurbit root pathogen, which has been reported in the main production areas of melon and watermelon in Brazil and worldwide and potentially capable to colonize roots of different species. Crop rotation is considered an effective management strategy to prevent this disease. The aim of this study was to evaluate the response of different crops, pumpkin, cotton, cowpea, sesame, watermelon, melon, corn, cucumber, sorghum and tomato, to the infection of this pathogen. Seedlings were transplanted into plastic containers with an inoculum concentration of 20 colony‐forming units (CFU) g−1 of M. cannonballus. Fifty days after transplanting, the variables analysed were the degree of disease severity on the root system and the frequency of reisolation. On cucurbits, the results demonstrated different degrees of susceptibility among crops and cultivars, being melon and watermelon the most sensitive species. In contrast, Cucurbita cultivars were the most tolerant. Regarding non‐cucurbit crops, maize, sorghum and tomato presented root discoloration and M. cannonballus was reisolated from roots. Cotton, cowpea and sesame cultivars were not affected by the pathogen, so they can be considered as alternative crops to be cultivated, or in rotation with cucurbits, in M. cannonballus infested soils.

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Section: Introductionmentioning

confidence: 99%

Cotton, cowpea and sesame are alternative crops to cucurbits in soils naturally infested withMonosporascus cannonballus

Júnior

Balbino

Negreiros

et al. 2018

Journal of Phytopathology

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“…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%

“…Symptoms of the disease include the yellowing and death of the crown leaves, which gradually radiates out and kills the vine as the fruit approach maturity. M. cannonballus produces ascospores in perithecia formed on diseased roots at the end of the growing season (Martyn & Miller, 1996;Cohen et al, 2012). Ascospores function as the primary survival structure, as well as the primary inoculum of the fungus for root infection (Stanghellini et al, 1996;2010).…”

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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“…& Nakai) crops in hot, semiadd to add, as well as subtropical cucurbit-growing areas worldwide (2,6,17). Matsum.…”

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confidence: 99%

Monosporascus eutypoides, a Cause of Root Rot and Vine Decline in Tunisia, and Evidence that M. cannonballus and M. eutypoides Are Distinct Species

Salem¹,

Correia

Boughalleb³

et al. 2013

Plant Disease

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Ben Salem, I., Correia, K. C, Boughalleb, N., Michereff, S. J., León, M., Abad-Campos, P., García-Iiménez, I., and Armengol, J. 2013. Monosporascus eutypoides, a cause of root rot and vine decline in Tunisia, and evidence that M. cannonbailus and M. eutypoides are distinct species. Plant Dis. 97:737-743.Three Monosporascus eutypoides-\ike isolates recovered from cucurbit plants with symptoms of Monosporascus root rot and vine decline in Tunisia were compared to 28 isolates of M. cannonbaiius from 12 countries for phenotypic, genomic, and pathogenicity charactedstics. Morphologically, M. cannonbaiius and M. eutypoides-like cultures were similar, each producing fertile pedthecia in culture containing globose, smooth, dark brown to black ascospores. Nevertheless, all M. cannonbaiius isolates had one ascospore per ascus, while M. eutypoides-like isolates had mainly two to three ascospores per ascus (rarely one). The employment of the internal transcdbed spacer (ITS) of nuclear ribosomal DNA, the elongation factor 1-a {EF-la), and the ß-tubulin (P-tub) gene sequence diversity analyses and the resulting phytogenies identified a level of polymorphism that enabled separation of M. cannonbaiius and M. eurypoide.i-yike isolates. All isolates of M. cannonbaiius had identical EF-\a and fi-tub sequences irrespective of very diverse geographic origins, which were different from the EF-\a and P-tub sequences of the M. eutypoides-like isolates (96 and 97% similadty, respectively). Similar results were obtained for the ITS region of rDNA. In addition, of three M. eutypoides-like isolates tested for pathogenicity, all three were pathogenic on watermelon, two were pathogenic on muskmelon, but only one was pathogenic on cucumber. The results demonstrate that the M. eutypoides-like isolates belong to the species M. eutypoides, and that M. cannonbaiius and M. eutypoides

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Advances in the Biology and Management of Monosporascus Vine Decline and Wilt of Melons and Other Cucurbits

Cited by 19 publications

References 122 publications

Cotton, cowpea and sesame are alternative crops to cucurbits in soils naturally infested withMonosporascus cannonballus

Cotton, cowpea and sesame are alternative crops to cucurbits in soils naturally infested withMonosporascus cannonballus

Fitness components of Monosporascus cannonballus isolates from northeastern Brazilian melon fields

Monosporascus eutypoides, a Cause of Root Rot and Vine Decline in Tunisia, and Evidence that M. cannonballus and M. eutypoides Are Distinct Species

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