Incidence and Toxigenicity of Seedborne<i>Fusarium</i>Species from Annual<i>Medicago</i>Species in South Africa

Lamprecht, S. C.; Marasas, W. F. O.; Thiel, Pieter G.; Schneider, D. J.; Knox‐Davies, P. S.

doi:10.1094/phyto-76-1040

Cited by 33 publications

(24 citation statements)

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“…Toxic type A and type B microcyclic trichothecenes have been reported from Fusarium-contaminated pasture species in countries such as South Africa and New Zealand (Bosch et al 1989;Lamprecht et al 1986;Lauren et al 1992). Most of the Western Australian trichothecene-producing Fusarium species produced either DAS or DON, both well-known to cause feed refusal disorders and to be toxic to a number of different test animals (Vesonder et al 1973(Vesonder et al , 1976.…”

Section: Discussionmentioning

confidence: 99%

“…Other southern hemisphere countries, including New Zealand and South Africa, have reported either a high incidence of Fusarium species in grass pastures (Bosch et al 1989), or in annual medic roots (Lamprecht et al 1988) and seedpods (Lamprecht et al 1986). F. avenaceum, F. crookwellense, F. culmorum and F. sambucinum were prevalent in New Zealand pasture species (Bosch et al 1989;Lauren et al 1988Lauren et al , 1992; whereas F. acuminatum, F. avenaceum and F. oxysporum were predominant in South African annual medic pastures (Lamprecht et al 1986(Lamprecht et al , 1988(Lamprecht et al , 1990.…”

Section: Introductionmentioning

confidence: 99%

“…F. avenaceum, F. crookwellense, F. culmorum and F. sambucinum were prevalent in New Zealand pasture species (Bosch et al 1989;Lauren et al 1988Lauren et al , 1992; whereas F. acuminatum, F. avenaceum and F. oxysporum were predominant in South African annual medic pastures (Lamprecht et al 1986(Lamprecht et al , 1988(Lamprecht et al , 1990. The above studies highlighted the capability of at least some of these Fusarium species to produce a range of mycotoxins, including butenolide, moniliformin, trichothecenes, and wortmannin that can be lethal to rats, ducklings and/or sheep (Bosch et al 1989;Lamprecht et al 1986). …”

Section: Introductionmentioning

confidence: 99%

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Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia

et al. 2011

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Sheep grazing in Western Australia can partially or completely refuse to consume annual Medicago pods contaminated with a number of different Fusarium species. Many Fusarium species are known to produce trichothecenes as part of their array of toxigenic secondary metabolites, which are known to cause feed refusal in animals. This study reports the identity of Fusarium species using species-specific PCR primers and a characterization of the toxigenic secondary metabolites produced by 24 Fusarium isolates associated with annual legume-based pastures and particularly those associated with sheep feed refusal disorders in Western Australia. Purification of the fungal extracts was facilitated by a bioassay-guided fractionation using brine shrimp. A number of trichothecenes (3-acetyldeoxynivalenol, deoxynivalenol, fusarenon-X, monoacetoxyscirpenols, diacetoxyscirpenol, scirpentriol, HT-2 toxin and T-2 toxin), enniatins (A, A1, B, and B1), chlamydosporol and zearalenone were identified using GC/MS and/or NMR spectroscopy. Some of the crude extracts and fractions showed significant activity against brine shrimp at concentrations as low as 5 μg ml(-1), and are likely to be involved in the sheep feed refusal disorders. This is the first report of chlamydosporol production by confirmed Fusarium spp.; of the incidence of F. brachygibbosum and F. venenatum in Australia and of F. tricinctum in Western Australia; and of mycotoxin production by Fusarium species from Western Australia.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia

et al. 2011

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“…This species is reported to produce enniatins, moniliformin, and T-2 toxin (24). F. reticulatum was found associated with seeds of Medicago littoralis and M. truncatula (19,56), wheat and barley roots (53), and causing necrosis in English oak (Quercus robur) (29) and red staining in box elder (Acer negundo) (2). These strains were tested for pathogenicity on the susceptible spring wheat variety 'Norm', but they did not produce disease symptoms under greenhouse conditions.…”

Section: F Graminearum Isolates Causing Fhb In Kentucky All Belongedmentioning

confidence: 98%

Characterization of Fusarium Strains Recovered From Wheat With Symptoms of Head Blight in Kentucky

et al. 2015

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Fusarium graminearum species complex (FGSC) members cause Fusarium head blight (FHB) of wheat (Triticum aestivum L.) and small grains in the United States. The U.S. population is diverse, and includes several genetically distinct local emergent subpopulations, some more aggressive and toxigenic than the majority population. Kentucky is a transition zone between the Mid-Atlantic and Midwestern wheat production areas. Sixty-eight Fusarium strains were isolated from symptomatic wheat heads from central and western Kentucky and southern Indiana in 2007. A multilocus genotyping assay and a variety of additional molecular markers, including some novel markers developed using the F. graminearum genome sequence, were used to characterize the pathogen population. Five of the isolates were identified as members of two non-FGSC species, F. acuminatum and F. cf. reticulatum, but they did not cause symptoms in greenhouse tests. All the FGSC isolates belonged to the 15-ADON chemotype of F. graminearum. Comparative genetic analysis using variable nuclear tandem repeat (VNTR) markers indicated that the population in Kentucky and Indiana belonged to the dominant North American population, with some diversification likely due to local evolution. Telomere and RFLP fingerprinting markers based on repetitive sequences revealed a high degree of genetic diversity within the population, with unique genotypes found at each location, and multiple genotypes isolated from the same head.

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“…Moniliformin have been found in corn in Canada, Germany, and New Zealand (18,28,31), and in wheat in Austria and Poland (2,20). Low levels of the toxin (< 0.25 mg/kg) were determined in samples of corn products commercialized in the UK.…”

mentioning

confidence: 99%

Survey of moniliformin in corn cultivated in the state of São Paulo and in corn products commercialized in the city of Campinas, SP

Leoni¹,

Soares²

2003

Braz. J. Microbiol.

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Incidence and Toxigenicity of SeedborneFusariumSpecies from AnnualMedicagoSpecies in South Africa

Cited by 33 publications

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Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia

Mycotoxins produced by Fusarium species associated with annual legume pastures and ‘sheep feed refusal disorders’ in Western Australia

Characterization of Fusarium Strains Recovered From Wheat With Symptoms of Head Blight in Kentucky

Survey of moniliformin in corn cultivated in the state of São Paulo and in corn products commercialized in the city of Campinas, SP

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