| the mitotic apparatus in fungi, ceratocystis fagacearum and fusarium oxysporum. | vegetative nuclei of fungi ceratocystis fagacearum and fusarium oxysporum were studied both in the living condition with phase-contrast microscopy and after fixation and staining by hcl-giemsa, aceto-orcein, and acid fuchsin techniques. nucleoli, chromosomes, centrioles, spindles, and nuclear envelopes were seen in living hyphae of both fungi. the entire division process occurred within an intact nuclear envelope. spindles were produced between separating daughter centrioles. at metaphase the ch ... | 1969 | 4881436 |
| the fatty acids of ceratocystis fagacearum. | | 1968 | 5700473 |
| the occurrence of ergosterol in the fungus ceratocystis fagacearum. | | 1969 | 5812252 |
| production of keto acids by ceratocystis fagacearum and ceratocystis coerulescens. | | 1967 | 6042870 |
| rflps in mitochondrial and nuclear dna indicate low levels of genetic diversity in the oak wilt pathogen ceratocystis fagacearum. | genetic diversity in the oak wilt pathogen ceratocystis fagacearum was assessed using restriction fragment length polymorphisms (rflps) of the mitochondrial dna (mtdna) and anonymous rflp loci in the nuclear dna (nudna). no genetic variation was detected in the mtdna among 27 isolates sampled from a broad geographical area. southern hybridization to 100 anonymous, random, nudna probes detected a low level of variation among nine of the isolates. only 35 out of 437 probe-enzyme combinations detec ... | 1995 | 7614561 |
| synthetic peptide combinatorial libraries: a method for the identification of bioactive peptides against phytopathogenic fungi. | synthetic combinatorial libraries were evaluated with an iterative process to identify a hexapeptide with broadspectrum activity against selected phytopathogenic fungi. a d-amino acid hexapeptide (frlkfh) and pentapeptide (frlhf) exhibited activity against fusarium oxysporum f. sp. lycopersici, rhizoctonia solani (anastomosis group 1), ceratocystis fagacearum, and pythium ultimum. the peptides showed no hemolytic or mutagenic activity. fluorescent microscopy studies with a membrane impermeant dy ... | 1997 | 9204560 |
| semiochemical-mediated flight responses of sap beetle vectors of oak wilt, ceratocystis fagacearum. | the sap beetle, colopterus truncatus (coleoptera: nitidulidae), is one of the primary vectors of the oak wilt pathogen, ceratocystis fagacearum, in the north-central united states. field behavioral assays utilizing various release rates and blends of three methyl-branched hydrocarbon aggregation pheromone components showed that flight responses of this beetle were similar in illinois and minnesota populations. in both locations, both sexes of the beetle responded synergistically to a combination ... | 2002 | 12371808 |
| the oak wilt enigma: perspectives from the texas epidemic. | ceratocystis fagacearum (bretz) hunt, the oak wilt pathogen, is currently causing massivel osses of semievergreen live oaks (quercus fusiformis small and q. virginiana mill.) in central texas. given the relatively limited oak mortality caused by c. fagacearum in the deciduous forests of the north central, midwestern, and mid-atlantic united states, this texas epidemic was not anticipated. the intensity of oak wilt in texas is attributed to a number of factors related to host characteristics and ... | 1995 | 18288898 |
| the origin of ceratocystis fagacearum, the oak wilt fungus. | the oak wilt pathogen, ceratocystis fagacearum, may be another example of a damaging, exotic species in forest ecosystems in the united states. though c. fagacearum has received much research attention, the origin of the fungus is unknown. the pathogen may have been endemic at a low incidence until increased disturbances, changes in land use, and forest management created conditions favorable for disease epidemics. the host genus quercus contains some relatively resistant species native to the u ... | 2008 | 18680421 |
| propiconazole distribution and effects on ceratocystis fagacearum survival in roots of treated red oaks. | we investigated the interaction between the oak wilt pathogen (ceratocystis fagacearum) and propiconazole in lower stems and roots of quercus rubra to better understand published reports of fungicide failure after 2 years. propiconazole was infused into mature oaks in july 2004 and roots were inoculated with pathogen endoconidia 1.0 m from injection sites at ±2 weeks of fungicide treatment. pathogen presence in wood samples was determined by isolation and fungicide concentrations measured using ... | 2010 | 20839933 |
| assessing the cost of an invasive forest pathogen: a case study with oak wilt. | economic assessment of damage caused by invasive alien species provides useful information to consider when determining whether management programs should be established, modified, or discontinued. we estimate the baseline economic damage from an invasive alien pathogen, ceratocystis fagacearum, a fungus that causes oak wilt, which is a significant disease of oaks (quercus spp.) in the central united states. we focus on anoka county, minnesota, a 1,156 km(2) mostly urban county in the minneapoli ... | 2011 | 21331653 |