Results 181 to 190 of about 3,527 (206)

Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae)

Journal of Phycology, 2020
A pink to red‐pigmented cryptophyte of undetermined taxonomic affinity was isolated and cloned from two seasonally ice‐covered. meromictic, saline Antarctic aquatic environments: Bayly Bay (BB) and Ace Lake (AL). The clones shared a number of morphological and ultrastructural similarities with other cryptomonad genera, which confounded identification ...
John van den Hoff, Elanor Bell, Lucy Whittock   +2 more
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The ultrastructure of mitosis inChroomonas salina (Cryptophyceae)

Protoplasma, 1976
A detailed account of the ultrastructure of mitosis in a member of theCryptophyceae is given for the first time. The initial indication of mitosis is the duplication of the flagellar bases. The nucleus migrates towards the anterior of the cell and its envelope and nucleolus break down.
Berl R. Oakley, John D. Dodge
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A reappraisal of the genus Rhodomonas (Cryptophyceae)

Phycologia, 1989
Rhodomonas baltica, the type species of the controversial genus Rhodomonas (Cryptophyceae), has been re-examined with light and electron microscopy.
David R. A. Hill, Richard Wetherbee
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Periplaststruktur und Organisation der Plasmamembran vonRhodomonas spec. (Cryptophyceae)

Protoplasma, 1979
The periplast of the CryptophyceaeRhodomonas has a hexagonal substructure. This substructure is caused by periplast plates. In freeze fracture replicas of the plasma membrane, there are corresponding hexagonal areas with numerous particles. These areas are separated by regions with less particles.
K. Hausmann, B. Walz
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Mitotic spindle formation inCryptomonas andChroomonas (Cryptophyceae)

Protoplasma, 1978
Spindle formation is examined in two cryptophycean algae,Cryptomonas sp. andChroomonas salina. During interphase a few (< 10) microtubules extend from the flagellar base pair at the anterior of the cell to the nucleus at the posterior. The beginning of prophase is signalled by the replication of the flagellar bases and the proliferation of the ...
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Occurrence of Cryptophyceae and katablepharids in boreal lakes

Hydrobiologia, 2003
One of the most important algal groups in Finnish lakes are the Cryptophyceae. Changes in the community structure of Cryptophyceae in a total of 22 lakes belonging to the Vuoksi river basin in eastern Finland were studied. The existence of lakes with water qualities varying from oligotrophic to eutrophic, often loaded by human activities, provides a ...
Liisa Lepistö, Anna-Liisa Holopainen
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�ber einen intrazellul�ren Parasiten beiCryptomonas (Cryptophyceae), I

Plant Systematics and Evolution, 1980
An intracellular parasite occurring inCryptomonas rostratiformis and less numerously also inC. erosa andC. phaseolus. The parasite is described. It grows in the dorsal side of the host near the nucleus from which it is optically indistinguishable in young stages. When mature the parasite fills 1/3 to 1/2 the volume of theCryptomonas cell. It is seen as
H. Ettl, �. Moestrup
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Guillardia theta gen. et sp.nov. (Cryptophyceae)

Canadian Journal of Botany, 1990
Guillardia theta gen. et sp.nov. is proposed as a new name for a cryptomonad that is well known in the literature as Cryptomonas sp. θ. Guillardia is small and can be distinguished from other cryptomonad genera by a combination of features of the plastidial complex, the furrow-gullet system, and a distinct periplast structure.
David R. A. Hill, Richard Wetherbee
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Mitosis and cell division in Cryptomonas (Cryptophyceae)

Canadian Journal of Botany, 1977
Mitosis and cytokinesis are examined in Cryptomonas sp., a member of the Cryptophyceae. The beginning of prophase is signalled by the replication of the flagellar bases which are at the anterior of the cell and a proliferation of the microtubules which run from them to the nucleus at the posterior.
Berl R. Oakley, Thana Bisalputra
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Cryptophyceae of Chile: I. Scanning electron microscopy of some Cryptophyceae of Laguna Grande San Pedro

1992
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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