Host range of <i>Acremonium cucurbitacearum</i>, cause of Acremonium collapse of muskmelon

Armengol, Josep; Sanz, Eric Climent; Martínez-Ferrer, G.; Júnior, Rui Sales; Bruton, B. D.; García‐Jiménez, J.

doi:10.1046/j.1365-3059.1998.00199.x

Cited by 21 publications

(43 citation statements)

References 6 publications

(10 reference statements)

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“…At the same time hypertrophy and hyperplasia were observed in the roothypocotyl and stem tissues. These histopathological changes resulted in the formation of corky and necrotic lesions on the hypocotyl and gave a knotted appearance to the infected plants ( García-Jiménez et al 1994;Armengol et al 1998). These symptoms are similar to those found in other crops in response to attack by other pathogenic fungi, such as F. oxysporum f. sp.…”

Section: Discussionsupporting

confidence: 63%

“…Owing to its tolerance, autumn squash is routinely used as a rootstock for both muskmelon and watermelon in order to control soil-borne diseases, such as Fusarium wilt (Miguel et al 2004), Acremonium collapse (in watermelon; Armengol et al 1998) and Monosporascus wilt (in muskmelon; Cohen et al 2005;in watermelon;Beltrán et al 2008). Furthermore, research indicates that the symptoms caused by both fungi are more severe in melons and watermelons than in squash (Aegerter et al 2000).…”

Section: Discussionmentioning

confidence: 99%

“…cucurbitacearum and M. cannonballus have a wide host range within the Cucurbitaceae, but their hosts display different degrees of susceptibility (Mertely et al 1993;Armengol et al 1998). Muskmelon (Cucumis melo) and watermelon have been classed as susceptible or highly susceptible to A. cucurbitacearum.…”

Section: Introductionmentioning

confidence: 99%

“…Muskmelon (Cucumis melo) and watermelon have been classed as susceptible or highly susceptible to A. cucurbitacearum. Cucurbita maxima (autumn squash) was included in a group which is highly resistant to this fungus (Armengol et al 1998). All the cucurbits tested were susceptible to M. cannonballus.…”

Section: Introductionmentioning

confidence: 99%

“…In Spain muskmelon has been routinely grafted onto C. maxima x C. moschata to control Fusarium wilt (Miguel et al 2004). This practice has also been used in Spain to control Acremonium collapse in watermelon crops (Armengol et al 1998).…”

Section: Introductionmentioning

confidence: 99%

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Colonisation and histological changes in muskmelon and autumn squash tissues infected by Acremonium cucurbitacearum or Monosporascus cannonballus

Alfaro-Fernández

García-Luis

2009

Eur J Plant Pathol

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Muskmelon (Cucumis melo cv. Temprano Rochet) and autumn squash (Cucurbita maxima) seedlings were inoculated either with Acremonium cucurbitacearum or Monosporascus cannonballus, two of the soil-borne fungi implicated in 'melon collapse'. Inoculation was achieved in two different ways: by growing the plants in pots containing infested soil to study the histological changes produced in the infected tissues using light microscopy and by growing seedlings in Petri dishes together with fungal colonies in order to observe the colonisation of the plant tissues using scanning electron microscopy. Both muskmelon and autumn squash roots infected with A. cucurbitacearum showed a suberised layer in the epidermis and the outermost layers of the parenchymatic cortex, but these symptoms developed earlier in the muskmelon plants. Muskmelon plants infected by this fungus also presented hypertrophy and hyperplasia, which led to a progressive separation of the vascular bundles in the lower stems of the affected plants. This response was not observed in autumn squash during the study. On the other hand, few histological changes were observed in tissues infected with M. cannonballus and only a slight increase in the size of cortical intercellular spaces was noted in the lower stems of muskmelon plants, and infected autumn squash tissues remained free of these symptoms throughout the study. The scanning electron microscope observations revealed that both fungi were able to colonise the tissues of the two host plants which were studied. A. cucurbitacearum colonised the epidermis and cortex of both muskmelon and autumn squash. The hyphae grew both inter-and intracellularly, and the density of the colonisation decreased within the endodermis. The same colonisation of host plants was observed as a result of M. cannonballus infection. The xylem vessel lumina of both muskmelon and autumn squash showed hyphae and tylose formation as a result of both fungal infections. However, non-fungal structures were detected in the hypocotyl vascular tissues. The present study demonstrates that both fungi are capable of infecting the tissues of a species which is resistant (autumn squash) and a species which is susceptible (muskmelon) to melon collapse.

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Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Colonisation and histological changes in muskmelon and autumn squash tissues infected by Acremonium cucurbitacearum or Monosporascus cannonballus

Alfaro-Fernández

García-Luis

2009

Eur J Plant Pathol

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Diseases of Cucurbits and their Management

McGrath

Diseases of Fruits and Vegetables Volume I

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Molecular characterization and PCR detection of the melon pathogen Acremonium cucurbitacearum

Martínez-Culebras

Abad-Campos

García‐Jiménez

2004

European Journal of Plant Pathology

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Acremonium cucurbitacearum is a soil-borne pathogen that causes collapse of muskmelon and watermelon plants. Cluster analysis based on RAPD patterns, obtained from use of 25 primers, divided isolates of A. cucurbitacearum from Spain and USA into two major groups. Most isolates from the USA fell into group 1, however, genetic similarity was not highly correlated with geographical origins or with previously established VCG groups. Analysis of 5.8S-ITS sequences showed very little sequence variation among isolates of A. cucurbitacearum, most had identical 5.8S-ITS sequence. Nodulisporium melonis, previously reported to cause a similar disease in Japan, had a 5.8S-ITS sequence that was identical to that of isolate A-419 proposed as the type strain of Acremonium cucurbitacearum suggesting that the two fungal pathogens should be considered a single species. Phylogenetic analysis, based on the 5.8S-ITS region, indicated that Acremonium cucurbitacearum is a monophyletic taxon more closely related to Plectosphaerella cucumerina than to other species of the genus Acremonium. Based on the 5.8S-ITS nucleotide sequence, a polymerase chain reaction was designed and used for specific detection of A. cucurbitacearum in diseased plants.

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Host range of Acremonium cucurbitacearum, cause of Acremonium collapse of muskmelon

Cited by 21 publications

References 6 publications

Colonisation and histological changes in muskmelon and autumn squash tissues infected by Acremonium cucurbitacearum or Monosporascus cannonballus

Colonisation and histological changes in muskmelon and autumn squash tissues infected by Acremonium cucurbitacearum or Monosporascus cannonballus

Diseases of Cucurbits and their Management

Molecular characterization and PCR detection of the melon pathogen Acremonium cucurbitacearum

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