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Chapter
Health Impact and Control of Particle Matter
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Article
Pearl millet downy mildew (Sclerospora graminicola): Zoosporogenesis
Cleavage of the zoosporangial cytoplasm ofSclerospora graminicola, the causal agent of pearl millet downy mildew, is by means of the fusion of cleavage vesicles and vesicles containing the extruded axoneme with t...
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Article
Paternal inheritance of the mitochondrial dna in interspecific crosses of the aquatic fungus allomyces
We have demonstrated by gel analysis of restricted DNA paternal inheritance of mitochondrial DNA in interspecific crosses between A. macrogynus and A. arbuscula.
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Article
Development of the resting sporangia ofSynchytrium endobioticum, the causal agent of potato wart disease
An ultrastructural study of the development of the resting sporangium ofSynchytrium endobioticum (Schilb.) Perc. infecting potato cells is presented. The resting sporangium is found to have a single large, centra...
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Article
Germination and parasitation of the resting sporangia ofSynchytrium endobioticum
The cytoplasmic organization of the long-lived, thick walled resting stage of the sporangium ofSynchytrium endobioticum (Schilb.) Perc. is described. The cytoplasm of the resting sporangium contains a large numbe...
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Article
Development of the zoosporangia ofSynchytrium endobioticum, the causal agent of potato wart disease
An ultrastructural study of zoosporangium development ofSynchytrium, endobioticum (Schilb.) Perc. is presented. Emphasis is placed on the location of the parasitic fungal thallus in the potato host cell, on the s...
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Article
Germination of the resting sporangia ofPhysoderma maydis, the causal agent ofPhysoderma disease of maize
The structural and developmental characteristics of the resting sporangium in uniflagellate phycomycetes, together with the type of zoospore, are of high taxonomic value. Among these fungi, however, only a few...
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Article
The endobiotic thallus ofPhysoderma maydis, the causal agent ofPhysoderma disease of maize
The endobiotic thallus ofPhysoderma maydis is characterized by the presence of an extremely fine rhizomycelium which passes through the host cell wall, allowing the spread of the disease, and irregularly shaped “...
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Article
Allomyces neo-moniliformis gametogenesis
InAllomyces neo-moniliformis meiosis takes place during resting sporangium germination. The meiospores are characteristically binucleate and biflagellate as described byEmerson (1938) andTeter (1944). A variation...
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Article
Meiotic prophase in diploid and tetraploid strains ofAllomyces macrogynus
Three-dimensional serial section reconstructions of meiotic prophase nuclei ofAllomyces macrogynus (Chytridiomycetes, Blastocladiales) have been carried out. Serial section reconstructions of pachytene nuclei hav...
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Article
The meiospore ofPhysoderma maydis. The causal agent ofPhysoderma disease of maize
The meiospore ofPhysoderma maydis (Phycomycetes, Chytridiales, Physodermataceae) has a nuclear cap enclosing the cellular ribosomes within a double membrane, and double membranes traversing the nuclear cap. Aggre...
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Article
Synaptonemal complex formation and meiosis in the resting sporangium ofBlastocladiella emersonii
Blastocladiella emersonii Cantino etHyatt (Phycomycetes, Blastocladiales) has aBrachyallomyces type of life cycle (sensu Emerson 1941) or aBlastocladiella type of life cycle (sensu Karling 1973), with a regular ...
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Article
The zoospore and meiospore of the aquatic phycomyceteCatenaria anguillulae
The zoospore and meiospore of the aquatic phycomyceteCatenaria anguillulae (Phycomycetes, Blastocladiales, Catenariaceae) have a nuclear cap enclosing the cellular ribosomes within a double membrane, and a side b...
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Article
Mitotic recombination in the absence of synaptonemal complexes in Saccharomyces cerevisiae
Mitotic cells of a diploid strain of Saccharomyces cerevisiae with appropriate markers for the detection of mitotic crossing-over and mitotic gene conversion were irradiated with X-rays. Induction of these recomb...
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Article
Meiotic recombination and synaptonemal complexes in Saccharomyces cerevisiae
The course of meiotic recombination, gene conversion and crossing-over, was investigated in Saccharomyces cerevisiae. Gene conversion was used as the selected event by removing cells from a medium inducing and pr...
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Article
A glass bead treatment facilitating the fixation and infiltration of yeast and other refractory cells for electron microscopy
Physical removal of the cell wall of yeast and other fungal cells, by rapid mixing of the cells with glass beads after preliminary fixation in glutaraldehyde or formalin, removes the cell wall barrier to fixat...
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Article
The zoospore ofPhlyctochytrium aestuarii
An ultrastructural study of the zoospore ofPhlyctochytrium aestuarii Ulken is presented. It is shown to be almost identical to the zoospore ofP. sp., isolate 71-1-E, described byKazama (1972 a and 1972 b), the on...
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Article
Leucine-lysine synchronization of Allomyces germlings
The leucine-lysine synchronization technique of Dill and Fuller (1970) has been further refined and used to study various biosynthetic events of pre-mitotic germlings of Allomyces neo-moniliformis (the time of DN...
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Article
Ultrastructure of Volvox carteri
The similarity in structure of the flagellum, star body, kinetosome, proximal and distal kinetosome bridges, and the girdling bands of microtubules in the somatic cells of Volvox carteri and the vegetative cells ...
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Article
Ultrastructure of Volvox carteri
Somatic cells of mature asexual colonies of Volvox carteri do not possess a true cell wall, but are otherwise similar in ultrastructure to Chlamydomonas. Somatic cells are embedded in multilayered fibrillar mater...
