fusarium wilt of melon is a destructive fungal disease throughout the world. in this study, the evolutionary relationships among isolates of different formae speciales of fusarium oxysporum was examined, with a special emphasis on the forma specialis melonis. bootstrapped maximum likelihood analysis of the elongation factor-1α (ef-1α) sequence was conducted on 16 iranian and 11 foreign isolates...

The structure of trypsin from the fungus Fusarium oxysporum has been refined at 1.55 A resolution by restrained least-squares minimization to an R-factor of 14.4%. The data were recorded from a single-crystal on the X31 beamline at EMBL, Hamburg, using a locally developed image-plate scanner. The final model consists of 1557 protein atoms, 400 water molecules, one molecule of isopropanol and on...

Fusarium oxysporum is a root-infecting fungal pathogen that causes wilt disease on a broad range of plant species, including Arabidopsis thaliana. Investigation of the defense response against this pathogen had primarily been conducted using leaf tissue and little was known about the root defense response. In this study, we profiled the expression of root genes after infection with F. oxysporum...

Balloon flower (Platycodon grandiflorum) is a kind of mountain herbs whose roots have restorative properties and the cultivating acreage of balloon flower has been steadily increasing in Korea. More frequent rain and high amount of rainfalls as a result of climate changes predisposed balloon flower to the outbreaks of root rot at high-density cultivation area in recent years. Root crowns were u...

Ditylenchus dipsaci and Fusarium oxysporum f. sp. medicaginis synergistically affected the mortality and plant growth of Ranger alfalfa, a cultivar susceptible to stem nematode and Fusarium wilt. The nematode-fungus relationship had an additive effect on mortality and plant growth of Lahontan (nematode resistant and Fusarium wilt susceptible) and of Moapa 69 (nematode susceptible and Fusarium w...

Kikuyu poisoning occurs sporadically in South Africa. It is of major economic importance, as valuable dairy cows are often poisoned by it, and once affected, the mortality rate is high. Pennisetum clandestinum samples were collected during eight outbreaks of kikuyu poisoning in cattle in the Eastern Cape Province of South Africa from 2008 to 2010. The kikuyu grass samples were submitted specifi...

Isoflavones, Fusarium, Methylation, Demethylation, 3'-Hydroxylation, Metabolism Several introductionary reactions of isoflavone metabolism by Fusarium fungi are reported. Fu­ sarium avenaceum hydroxylates formononetin in the 3'-position yielding 3',7-dihydroxy-4'-methoxyisoflavone (calycosin). 3'-Hydroxylation of biochanin A to 3/,5,7-trihydroxy-4/-methoxyisoflavone (pratensein) has been observ...

The soil-borne fungus Fusarium oxysporum causes vascular wilts of a wide variety of plant species by directly penetrating roots and colonizing the vascular tissue. The pathogenicity mutant B60 of the melon wilt pathogen F. oxysporum f. sp. melonis was isolated previously by restriction enzyme-mediated DNA integration mutagenesis. Molecular analysis of B60 identified the affected gene, designate...

Agricultural research of plant-derived endophytic fungi has grown in recent decades. We isolated 26 endophytic fungi from the leaves, stems and fruits of "the tree of life", Camptotheca acuminata, and tested them for antimicrobial activities based on growth inhibition measurements in a modified agar diffusion method. Fermentation broths from most of the isolates exhibited antifungal activity an...

Partially purified lipoxygenase (LOX) extracts were obtained from Fusarium proliferatum, Fusarium oxysporum, Chlorella pyrenoidosa, and Saccharomyces cerevisiae; the enzymatic extract of F. proliferatum showed the highest LOX activity while those of F. oxysporum and S. cerevisiae demonstrated only 27.8 and 16.5% of the activity at pH 8.0, and 61.2 and 9.7% of the enzyme activity at pH 10.0, res...