Results 91 to 100 of about 130 (111)

A Checklist of Desmids (Conjugatophyceae, Chlorophyta) of Serbia. II. GenusCosmarium

Cryptogamie, Algologie, 2011
Abstract The desmid flora of Serbia has been surveyed during various periods. The first data on the distribution of desmids in Serbia date back to 1883 and from then on until 2009 altogether 630 different taxa were identified. Among 23 genera of desmids in all, the most diverse and most commonly found is Cosmarium (242 taxa or 38.4% of the total number
Sanja Fužinato, Mirko Cvijan, Marija Stamenković   +2 more
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The extracellular polymeric substances of desmids (Conjugatophyceae, Streptophyta): chemistry, structural analyses and implications in wetland biofilms

Phycologia, 2007
Abstract Desmids represent a group of advanced green algae that are commonly found in biofilm communities of freshwater wetlands. Desmids secrete significant amounts of extracellular polymeric substances (EPS) that form an extensive mucilaginous sheath external to the cell wall and function in adhesion, gliding-based movements and ultimate ensheathment
Sarah N. Kiemle, David S. Domozych, Michael R. Gretz   +2 more
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New species of desmids (Conjugatophyceae, Charophyta) to the algale flora of Moscow region

Moscow University Biological Sciences Bulletin, 2015
Samples of algae were collected in swamps situated at PavlovoPosad in Moscow region. Alto gether, 141 species and varieties were found; 30 taxa of them are new to the region and six taxa are new to Russia. Descriptions of the taxa were improved by data on cell wall ornamentation obtained by SEM meth ods. Original descriptions and photos of algae new to
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TIME LAPSE ANALYSES OF SEXUAL REPRODUCTION IN CLOSTERIUM EHRENBERGII (CONJUGATOPHYCEAE)¹

Journal of Phycology, 1984
ABSTRACTThe process of sexual differentiation was studied using heterothallic clones of Closterium ehrenbergii Meneghini. The first visible sign of sexual reproduction was agglutination of two or more cells in a group and this was followed by gametangiogenic division and conjugation of gametangial cells.
Terunobu Ichimura, Fumie Kasai
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Biosystematic studies on theClosterium moniliferum/ehrenbergiicomplex (Chlorophyta, Conjugatophyceae) in Western Europe. I. Isozyme patterns

British Phycological Journal, 1988
In the course of a biosystematic investigation into Closterium ehrenbergii and C. moniliferum, 278 clones of these species originating from 17 populations in The Netherlands and England were screened for their electrophoretic banding patterns with respect to the enzymes catalase, shikimate dehydrogenase, malic enzyme, acid phosphatase and isocitrate ...
Coesel, P.F.M., Menken, S.B.J.
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Action of cytochalasin B on cytoplasmic streaming systems and morphogenesis in Micrasterias torreyi (Conjugatophyceae)

Nordic Journal of Botany, 1983
The effects of cytochalasin B on the development and morphology of the Micrasterias cell vary according to different developmental stages. CB (especially 5–6 μm/ml) does not stop the growth of a developing semicell during early developmental stages and allows the formation of a three–lobed ...
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Some small-sized Cosmarium (Conjugatophyceae, Desmidiales) from sphagnum bogs of Moscow Region

Novosti sistematiki nizshikh rastenii, 2013
Algae samples were collected during different seasons from 1997 to 2011 in two swamps located at Zvenigorod Biological Station in Moscow Region. There were found 25 Cosmarium species and varieties, 9 taxa of them being new to the region. Descriptions of the taxa were specified by observation of cell wall ornamentation with light and scanning electron ...
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Sexual Reproduction inCylindrocystis brebissonii(Ralfs) De Bary (Charophyta: Conjugatophyceae: Desmidiaceae) in Nature

Cryptogamie, Algologie, 2017
Complete sequence of sexual reproduction in Cylindrocystis brebissonii (Ralfs) De Bary was observed for the first time in a natural population from Sikkim, Eastern Himalayas. The observations are supported by microphotographs.
Debjyoti Das, Jai Prakash Keshri
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The taxonomy, morphology and ecology of some smallerEuastrumspecies (Conjugatophyceae, Desmidiaceae)

British Phycological Journal, 1984
A morphological study of a large population of a small Euastrum species from a peat-pit in the Auvergne (France) revealed a very confusing taxonomy. A literature survey disclosed a gradual change in the concept of Euastrum sublobatum Breb. in Ralfs by successive authors. The original diagnosis and illustrations are considered inadequate.
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Rare desmids (Streptophyta, Conjugatophyceae) from waterbodies of the National Park «Valdaiskiy» (Novgorod Region, Russia)

Novosti sistematiki nizshikh rastenii, 2016
In the summer 2013, two rare freshwater desmids, Sphaerozosma laeve and Actinotaenium tessellatum (Streptophyta, Conjugatophyceae), were found in the National Park «Valdaiskiy» (Novgorod Region, Russia). The former species was collected in the plankton of the lake «Pestovo» (57°43ʹ46.6ʺ N, 32°57ʹ55.0ʺ E), the latter one was found on the shore of the ...
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