Results 131 to 140 of about 3,633 (173)

Continuous liquid culture of the fungus Ophiostoma multiannulatum

Experimental Cell Research, 1953
Abstract A method is described by which it is possible to maintain a fungus under conditions of constant and continuous growth. By altering the rate at which fresh nutrient is added to the culture, the growth rate of the organism can be controlled.
B, VON HOFSTEN, A, VON HOFSTEN, N, FRIES
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A new species of Ophiostoma from North America, similar to Ophiostoma penicillatum

Canadian Journal of Botany, 1997
Ophiostomatoid fungi that resemble Ophiostoma penicillatum were isolated from insect-infested spruce (Picea sp.) in Japan as well as Larix decidua Mill. (European larch) in North America. Isolates were characterized based on morphology and could be separated into two distinct groups. Those from spruce in Japan represent O.
K. Jacobs, M. J. Wingfield, D. R. Bergdahl   +2 more
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Sibling species within Ophiostoma piceae

Mycological Research, 1993
Fifty-five hardwood or conifer derived isolates of the heterothallic fungus Ophiostoma piceae from Europe and North America were separated into two inter-sterile mating groups. One group, designated OPH, came almost exclusively from hardwood hosts while the other isolates, designated OPC, came predominantly (75%) from conifers.
C.M. Brasier, Susan A. Kirk
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Conidium development in Sporothrix anamorphs of Ophiostoma

Mycological Research, 1997
Hyalorhinocladiella and Sporothrix are two common mycelial anamorphs of Ophiostoma that are difficult to distinguish from each other. Sporothrix spp. differ visibly from Hyalorhinocladiella by the presence of denticles on the conidiogenous cells. Graphium and Sporothrix are often synanamorphs of the same Ophiostoma species and the aim of this study was
E. Benade, M.J. Wingfield, P.S. Van Wyk
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Conidial development in the anamorph of Ophiostoma cucullatum

Mycological Research, 1989
The anamorph of O. cucullatum is thought to belong to the genus Phialographium which is characterized by ‘phialidic’ conidial development. However, both distinct collarettes and annellations, indicative of phialidic and percurrent proliferation respectively, were observed at the apex of conidiogenous cells.
M.J. Wingfield, P.S. Van Wyk, P.W.J. Van Wyk   +2 more
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Ultrastructural study of ascoma and ascospore development in Ophiostoma distortum and Ophiostoma minus

Canadian Journal of Botany, 1991
The development of the ascoma, ascus, and elongated ascospores in Ophiostoma distortum and Ophiostoma minus was studied at the ultrastructural level and compared with that of other related Ascomycetes. The organization of the centra in O. distortum and O. minus differed considerably. In O.
P. W. J. van Wyk, M. J. Wingfield
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The Anamorph of Ophiostoma Francke-Grosmanniae is a Leptographium

Mycologia, 1992
It has been suggested that the anamorph of Ophiostomafrancke-grosmanniae is a species of Phialocephala with phialidic conidium development. This would make it the only species in OphiostOma with a Phialocephala anamorph. Light and ftuorescence microscopy seemed to confirm the presence ofphialidic conidiogenous cells.
M. Mouton, M. J. Wingfield, P. S. van Wyk   +2 more
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The Ophiostoma piceae complex in the Southern Hemisphere: a phylogenetic study

Mycological Research, 2003
The Ophiostoma piceae species complex incorporates several economically important species, including serious tree pathogens and agents of bluestain. The species in the complex are morphologically similar, but can be distinguished from each other based on morphology, biology, mating type studies and molecular data.
Z Wilhelm, de Beer, Brenda D, Wingfield, Michael J, Wingfield   +2 more
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Molecular Characterization of a Partitivirus from Ophiostoma Himal-ulmi

Virus Genes, 2006
The complete nucleotide sequences of two double-stranded (ds) RNA molecules, S1 (1,744 bp) and S2 (1,567 bp), isolated from an isolate HP62 of the Himalayan Dutch elm disease fungus, Ophiostoma himal-ulmi, were determined. RNA S1 had the potential to encode a protein, P1, of 539 amino acids (62.7 kDa), which contained sequence motifs characteristic of ...
Lauren J, Crawford, Toba A M, Osman, Frank P, Booy, Robert H A, Coutts, Clive M, Brasier, Kenneth W, Buck   +5 more
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Characterization of iprodione tolerance in Ophiostoma ulmi

Transactions of the British Mycological Society, 1987
Iprodione tolerance in Ophiostoma ulmi appears to be conferred by allelic or closely linked single-locus mutations. The characteristics of three stable iprodione-tolerant phenotypes are described.
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