Results 121 to 130 of about 348 (154)
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Zoosporogenesis in Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew
Nordic Journal of Botany, 1989During sporulation of Pseudoperonospora cubensis on cucumber leaves ( Cucumis saliva ) zoosporangia are formed on the dichotomously branched sporangiophore. The mature zoosporangium has a preformed discharge papilla and the cytoplasm is uncleaved.
Lene Lange, Ulla Edén, Lauritz W. Olson
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Protoplasma, 1986
Cytoplasmic cleavage in the gametangia and zoosporangia ofA. macrogynus was studied using monensin, an ionophore known to disrupt several endomembrane functions in plant and animal cells. Monensin interfered with normal gamete and zoospore formation in a dose dependent manner such that at a 20 μM concentration very abnormal cells were released from the
T. Sewall +3 more
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Cytoplasmic cleavage in the gametangia and zoosporangia ofA. macrogynus was studied using monensin, an ionophore known to disrupt several endomembrane functions in plant and animal cells. Monensin interfered with normal gamete and zoospore formation in a dose dependent manner such that at a 20 μM concentration very abnormal cells were released from the
T. Sewall +3 more
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Archiv Für Protistenkunde, 1994
Summary The “amoeboflagellate” Reticulamoeba gemmipara n. gen., n. sp. was isolated from samples which were collected in the littoral zone of the Greek island Thera (Santorin). It could be cultivated with the pennate diatom Amphiprora sp. as food organism. On a “lawn” of the diatoms, the amoeboid stages create clusters.
Karl G Grell
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Summary The “amoeboflagellate” Reticulamoeba gemmipara n. gen., n. sp. was isolated from samples which were collected in the littoral zone of the Greek island Thera (Santorin). It could be cultivated with the pennate diatom Amphiprora sp. as food organism. On a “lawn” of the diatoms, the amoeboid stages create clusters.
Karl G Grell
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Electron microscopy of zoosporogenesis in the marine phycomycete, Lagenidium callinectes Couch
Archiv f�r Mikrobiologie, 19731. Zoosporogenesis and zoospore structure of Lagenidium callinectes, parasitic on ova of the blue crab, Callinectes sapidus, are studied by electron microscopy. 2. The cytoplasmic thread connecting discharging cytoplasmic units appears as a simple constricted area of cytoplasm, containing much membranous material, and bound by only the ...
C. E. Bland, H. V. Amerson
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MITOSIS AND CLEAVAGE DURING ZOOSPOROGENESIS IN SEVERAL COCCOID GREEN ALGAE1
Journal of Phycology, 1979ABSTRACTThe fine structure of mitosis and cleavage inAxilosphaera vegetataCox & Deason,Chlorococcum echinozygotumStarr,Chlorosarcinopsis eremiChantanachat&Bold,Nautococcus mammilatusKorshikoff,N. terrestrisArchibald,N. solutaArchibald,Neospongiococcum solitariumDeason, andTetracystis aeriaBrown & Bold was observed. All possess a phycoplast,
Temd R. Deason, Joseph C. O'Kelley
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Some observations on zoosporogenesis in the female strain of Oedogonium cardiacum
Canadian Journal of Botany, 1968Developmental cytological events in zoosporogenesis in Oedogonium have been studied in material stained with dilute solutions of acridine orange. Induction leads to isolation of successive protoplasts within the filament. Profound intracellular changes leading to zoospore formation are described and are considered to be the result of cellular ...
Elizabeth Trerice Retallack +1 more
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Mycologia, 2004
Cleavage membrane development and cytokinesis were examined in zoosporangia of Allomyces macrogynus treated with cytoskeletal inhibitors and compared to zoosporogenesis under control conditions. Developing membranes were visualized in living zoosporangia with laser-scanning confocal microscopy using the lipophilic membrane dye FM4-64.
David S, Lowry +2 more
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Cleavage membrane development and cytokinesis were examined in zoosporangia of Allomyces macrogynus treated with cytoskeletal inhibitors and compared to zoosporogenesis under control conditions. Developing membranes were visualized in living zoosporangia with laser-scanning confocal microscopy using the lipophilic membrane dye FM4-64.
David S, Lowry +2 more
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The ultrastructure of mitosis during zoosporogenesis in Rhizidiomyces apophysatus
Canadian Journal of Botany, 1989Mitotic divisions in reproductive thalli of Rhizidiomyces apophysatus, a monocentric, eucarpic hyphochytrid, were examined ultrastructurally. Mitosis is centric; each spindle pole contains two centrioles of unequal length that lie at a 108° angle relative to each other.
W. E. Barstow +2 more
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Synthesis and assembly of flagellar surface antigens during zoosporogenesis inPhytophthora cinnamomi
Protoplasma, 1994Cryomicrotomy and immunofluorescence microscopy employing three different categories of monoclonal antibody (MAb) that label antigens on the surface of one or both flagella ofPhytophthora dnnamomi have been used to follow the synthesis and assembly of flagellar surface components.
M. Cope, A. R. Hardham
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Botanica Marina, 2003
Based on transmission electron microscopy observation, zoosporogenesis in the siphonous multinucleate green alga Derbesia tenuissima can be divided into five stages. In vegetative sporophytes and Stage 1 sporangia, the cytoplasm was distinguished as two regions, the inner region of chloroplasts and the outer region of nuclei.
S.-H. Lee, T. Motomura, T. Ichimura
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Based on transmission electron microscopy observation, zoosporogenesis in the siphonous multinucleate green alga Derbesia tenuissima can be divided into five stages. In vegetative sporophytes and Stage 1 sporangia, the cytoplasm was distinguished as two regions, the inner region of chloroplasts and the outer region of nuclei.
S.-H. Lee, T. Motomura, T. Ichimura
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