Characterization of a Vascular Wilt of Erythroxylum coca Caused by Fusarium oxysporum f. sp. erythroxyli Forma Specialis Nova

Sands, David C.; Ford, Eugene; Miller, Russell; Sally, B. K.; McCarthy, Mary-Jane; Anderson, T. W.; Weaver, M. B.; Morgan, Christopher; Pilgeram, Alice L.; Darlington, L. C.

doi:10.1094/pdis.1997.81.5.501

Cited by 29 publications

(13 citation statements)

References 5 publications

(4 reference statements)

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“…These symptoms have been previously described as the main symptoms observed in plants inoculated with P. aleophilum , P. inflatipes and P. chlamydospora . Vascular discoloration is one of the typical symptoms associated with plants infected by vascular fungi (Sands et al., 1997; Harrington et al., 2000) which is due to the oxidation and translocation of some breakdown products of plant cells attacked by fungal enzymes (Agrios, 2005). In this work, all tested Phaeoacremonium species caused significant vascular discoloration, similar to the one caused by P. chlamydospora in inoculated cuttings, although none of the Phaeoacremonium species was more virulent than P. chlamydospora , which caused the largest vascular discoloration affected area.…”

Section: Discussionmentioning

confidence: 99%

Pathogenicity of Phaeoacremonium Species on Grapevines

Aroca¹,

Raposo²

2009

Journal of Phytopathology

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Several Phaeoacremonium species have been recently described to include some species involved in disease of decline of woody plants and others associated with human infections. Thirteen species are currently reported on grapevines and they are suspected to be involved in Esca and Petri disease. The pathogenic character of new defined species is still unknown and, therefore, pathogenicity studies were conducted in this work. The pathogenicity of the following species was studied on grapevine seedlings and cuttings: Phaeoacremonium aleophilum, P. angustius, P. inflatipes, P. krajdenii, P. mortoniae, P. parasiticum, P. scolyti, P. venezuelense, P. viticola, and Phaeomoniella chlamydospora included as positive control. Two-month-old grapevine seedlings of Vitis vinifera cv. Malvar and cv. Airen were inoculated by watering 10 individual pots with a spore suspension (10 7 spores ⁄ ml) of each Phaeoacremonium species. All inoculated seedlings showed typical symptoms of a vascular disease 2 months after inoculation. Grapevine cuttings of Vitis vinifera cv. Monastrell were vacuum-inoculated with a spore suspension (10 8 spores ⁄ ml) and individually planted. Plants rated after 5 months showed that all Phaeoacremonium species and P. chlamydospora (used as positive control) caused a significant vascular discoloration, while only Phaeomoniella chlamydospora, Phaoeacremonium mortoniae and P. aleophilum caused a significant root weight reduction compared with a non-inoculated control. Phaoeacremonium parasiticum, P. angustius, P. inflatipes and P. venezuelense caused significant foliar symptoms that included interveinal chlorosis and stunted leaves.

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Section: Discussionmentioning

confidence: 99%

Pathogenicity of Phaeoacremonium Species on Grapevines

Aroca¹,

Raposo²

2009

Journal of Phytopathology

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“…coca L.), marijuana (Cannabis sativa L.), and opium poppy (Papaver somniferum L.) are sociocultural and political rather than biological because the potential of the approach seems clear. A number of candidate bioherbicides for narcotic plants have been described (Bailey et al 1996(Bailey et al , 2004Sands et al 1997). Granular formulations that could be delivered from high [safe] altitude have been shown to preserve inoculum quality and to be a suitable method of field application (Bailey et al 1996).…”

Section: Narcotic Plantsmentioning

confidence: 99%

Where are the bioherbicides?

Hallett

2005

Weed Science

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Since commercialization of Collego™ and Devine™ in the early 1980s, there has been a small but consistent research effort in the area of bioherbicides. The bioherbicide approach has promised effective weed management in cropping systems where the classical approach (using exotic natural enemies) is largely unsuitable. The overriding principle of the bioherbicide approach has been that a host-specific, coevolved natural enemy can be used as a bioherbicide when applied in simple formulations at inundative levels; however, two decades of research has effectively disproven this principle. Although research has revealed weaknesses in the bioherbicide approach, it has also revealed potential in a number of areas. A number of niche situations will remain in which host-specific plant pathogens can be developed as bioherbicides, such as for parasitic weeds and narcotic plants, but more research should be conducted with virulent, broad host range organisms, and more effort should be devoted to developing techniques for the cultural and genetic enhancement of bioherbicidal organisms.

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“…More recently, a strain of F. oxysporum f. sp. erythroxyli has been proposed for the biocontrol of narcotic plants (Sands et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

HPLC analysis of fusaric acid, 9,10‐dehydrofusaric acid and their methyl esters, toxic metabolites from weed pathogenic Fusarium species

Amalfitano

Pengue

Andolfi

et al. 2002

Phytochemical Analysis

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A simple and rapid HPLC method, using a high-density C18 column, has been developed for the quantitative analysis of fusaric and dehydrofusaric acids and their methyl esters in the methanol extract of lyophilised culture filtrates of species of Fusarium. The method has been used to determine the content of these metabolites in two strains of Fusarium oxysporum and in strains of F. nygamai and F. udum. Fusaric acid has been isolated and identified from a strain of F. udum for the first time.

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Characterization of a Vascular Wilt of Erythroxylum coca Caused by Fusarium oxysporum f. sp. erythroxyli Forma Specialis Nova

Cited by 29 publications

References 5 publications

Pathogenicity of Phaeoacremonium Species on Grapevines

Pathogenicity of Phaeoacremonium Species on Grapevines

Where are the bioherbicides?

HPLC analysis of fusaric acid, 9,10‐dehydrofusaric acid and their methyl esters, toxic metabolites from weed pathogenic Fusarium species

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