Topic
Allomyces javanicus
About: Allomyces javanicus is a research topic. Over the lifetime, 7 publications have been published within this topic receiving 56 citations.
Papers
TL;DR: The asexual stage of Allomyces javanicus is apparently devoid of colorless C40-polyenes, as well as lacking colored polyenes as reported by Emerson and Fox.
Abstract: 1. The normal occurrence of γ-carotene as the major carotenoid and of β-carotene as a minor component of the sexual phase of the aquatic fungus Allomyces javanicus has been confirmed. Lycopene has been identified as an additional minor component. 2. Growth of the gametophyte in the presence of nontoxic amounts of diphenylamine results in a 95% reduction in the synthesis of γ-carotene in the male gametangia and in the appearance of measurable amounts of phytofluene and a pale yellow pigment similar to ζ-carotene. No definite evidence was obtained for the presence of phytoene. 3. A sterol exhibiting blue fluorescence and spectral properties suggestive of ergosterol has been observed in gametophytic material. 4. The asexual stage of Allomyces javanicus is apparently devoid of colorless C40-polyenes, as well as lacking colored polyenes as reported by Emerson and Fox.
17 citations
TL;DR: The dynamic changes in the host-parasite interface are discussed in relationship to the obligate requirement of the parasite for nutrients supplied by the host.
Abstract: The interface between the endoparasitic fungus, Caienaria allomycis, and its aquatic fungal host, Allomyces javanicus, is described from a developmental, ultrastructural study. The wall of the parasite interfaces with the cytoplasm of the host. As the parasite develops, host organelles show a progressive sequence of preferential associations with the parasite. During the round cell and spindle cell stages of the parasite, host endoplasmic reticulum (ER) proliferates and ensheathes the parasitic thallus. At later stages, host ER becomes organized into membranous labyrinths continuous with whorls of single cisternae, and host lipid globules cluster around the parasite. When parasitic sporangia are mature, the host cytoplasm begins to degenerate. Fragments of host ER cling to the surface of the parasite after most host membranes have vesiculated. The dynamic changes in the host-parasite interface are discussed in relationship to the obligate requirement of the parasite for nutrients supplied by the host.
14 citations
TL;DR: The combined cytochemical data suggest that the endoplasmic reticulum in Allomyces, and perhaps in other chytrids, has enzymatic activities similar to those of the Golgi apparatus in other eucaryotic cells.
13 citations
TL;DR: Mycelia of an aquatic phycomycete were exposed to gamma radiation from a cobalt 60 source, and death, with complete disruption of protoplasmic contents of cells, resulted when mycelia received 144 x 104 r.
Abstract: 1. Mycelia of an aquatic phycomycete (Allomyces javanicus Kniep) were exposed to gamma radiation from a cobalt 60 source. Dosage ranged from about 2.7 to 144 x 104 roentgen units, applied as a continuous dose at about 8 x 104 r/hour. Exposures of 96 x 104 r or less produced no observed changes. 2. After exposure to 112 x 104 r, mitochondria became swollen and vesiculate. Some were irregular in form, but most were spherical. Nuclei seemed undamaged. Plants were capable of renewed growth, regeneration of typical mitochondria, and normal reproduction by means of zoospore formation. 3. A dose of 128 x 104 r was sufficient to alter all mitochondria and produce obvious damage to nuclei, which became irregular in form, with clumped chromatin. In the outer layer of the cytoplasm, fibrillar structures appeared. Some were smooth and branched, and some were beaded. Regeneration of the plant did not occur. 4. Death, with complete disruption of protoplasmic contents of cells, resulted when mycelia received 144 x 104 r.
5 citations
5 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 1982 | 1 |
| 1979 | 1 |
| 1973 | 1 |
| 1971 | 1 |
| 1954 | 1 |
| 1953 | 1 |