Results 181 to 190 of about 19,856 (238)

Quantification of laminarialean zoospores in seawater by real‐time PCR

Phycological Research, 2020
Laminarialean plants undergo heteromorphic alternation of generations between the macroscopic diploid sporophyte and the microscopic haploid gametophyte. The generations change through the formation and release of asexual or sexual reproductive cells. It
Chikako Nagasato, H. Kawamoto, T. Tomioka, S. Tsuyuzaki, Chika Kosugi, Toshiaki Kato, T. Motomura   +6 more
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The zoospore ofPhlyctochytrium aestuarii

Protoplasma, 1977
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 only significant difference in the ultrastructure of the zoospores being a less well developed “eyespot”-like complex in the isolate studied ...
Lene Lange, L. W. Olson
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The zoospore ofOlpidium brassicae

Protoplasma, 1976
The ultrastructure of the zoospore ofOlpidium brassicae is described and compared with observations made of other zoospores of the uniflagellatePhycomycetes. The zoospore ofO. brassicae is characterized by an extensive, cone-shaped rhizoplast and a lack of a nuclear cap, as well as a side-body complex or a rumposome.
Lene Lange, Lauritz W. Olson
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Zoosporic fungi of Oceania. VI. Species with biflagellate zoospores

Mycopathologia et Mycologia Applicata, 1969
Several species of the Plasmodiophoraceae, Olpidiopsidaceae and Lagenidiaceae were isolated on various substrata from the soils of Oceania. Among these were two parasites of rotifer eggs,Lagenidium septatum andMyzocytium fijiensis. The former species is characterized primarily by septation of the thallus into segments which develop into resting spores ...
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Zoosporic fungi of Oceania

Archiv f�r Mikrobiologie, 1968
In a further study of the zoosporic fungi of Oceania three new species of Rhizophydium, R. rarotonganensis, R. angulosum, and R. condylosum were isolated on various substrata from soil. Rhizophydium rarotonganensis is a parasite of Nowakowskiella profusa and causes marked local hypertrophy of the rhizomycelium.
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Zoospores in Scenedesmus obliquus

Science, 1963
In basal medium without a nitrogen source a 3-day-old culture of Scenedesmus obliquus produced zoospores, which were biflagellated, had a parietal chloroplast, lacked a pyrenoid, and were apparently not walled. Identical results were produced with new clones. A reconsideration of the relationships and classification
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Zoospore development in the oomycetes

Fungal Biology Reviews, 2007
Abstract Oomycetes cause destructive diseases on both animals and plants. The epidemic spread of oomycete diseases is primarily based on rapid dispersal from host to host by free swimming zoospores. These single-nucleated spores are formed in sporangia and are only released in aqueous environments.
Claire A. Walker, Pieter van West
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Fine structure ofCylindrocapsa zoospores

Protoplasma, 1976
Quadriflagellate zoospores from an isolate ofCylindrocapsa geminella have been studied ultrastructurally. Each swimming zoospore is enclosed within a delicate, loose-fitting, outer investment which in grazing tangential section exhibits a pattern resembling wire gauze.
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The zoospore of Olpidium radicale

Transactions of the British Mycological Society, 1978
An ultrastructural study is presented of the unusually large zoospore (c. 8 μm long) of the root-inhabiting uniflagellate Phycomycete, Olpidium radicale Schwartz & Cook (synonyms: Olpidium cucurbitacearum Barr and Pleotrachelus bornovanus Saht.). The study has revealed ultrastructural characters unique to this organism: (1) the axonemal fibres extend ...
L. Lene Lange, Lauritz W. Olson
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Chemotaxis of Zoospores for Root Exudates

Science, 1961
A chemotactic response of the zoospores of a soil-inhabiting plant pathogenic fungus, Phytophthora cinnamomi, for roots of avocado seedlings was observed. The chemotaxis of the zoospores and chemotropy of their germ tubes were directly related to infection and disease production.
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