SAG ‐ Sammlung von Algenkulturen at the University of Göttingen Catalogue of Strains 1994

Schlösser, U. G.

doi:10.1111/j.1438-8677.1994.tb00784.x

Cited by 351 publications

(196 citation statements)

References 185 publications

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“…The pyrenoid of M. basinucleata (SAG 67.72) is difficult to distinguish because the pyrenoid has no starch layer around the pyrenoid. Therefore M. basinucleata has previously been identified wrongly as Chloromonas subdivisa (Pascher & Jahoda) Gerloff and Ettl ex Ettl (Schlo¨sser, 1994). Interestingly, despite the absence of a pyrenoid, true Chloromonas subdivisa is similar in cell morphology to species of Microglena (Pascher & Jahoda, 1928), which may indicate that it too should be transferred.…”

Section: Chloroplast Morphology and Phenotypic Plasticity In Microglenamentioning

confidence: 96%

“…Strains were obtained from the Sammlung von Algenkulturen, University of Go¨ttingen, Germany (SAG: Schlo¨sser, 1994;www.epsag.uni-goettingen.de), Culture Collection of Algae, University of Cologne, Germany (CCAC; www.ccac.uni-koeln.de) and Algal Collection of Kyiv University, Ukraine (ACKU; Kostikov et al, 2009); they are listed in Table S1 (Supplementary material). The freshwater strains were grown in modified Bold's Basal Medium (3N-BBM þ V: medium 26a in Schlo¨sser, 1997), both marine strains in modified artificial seawater medium (MASM: www.ccap.ac.uk/media/documents/MASM_ 000.pdf).…”

Section: Cultures and Light Microscopymentioning

confidence: 99%

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Generic and species concepts inMicroglena(previously theChlamydomonas monadinagroup) revised using an integrative approach

Demchenko

Mikhailyuk

Coleman

et al. 2012

European Journal of Phycology

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Traditionally the genus Microglena Ehrenberg has been used to contain species that belong to the Chrysophyceae; however, the type species of Microglena, M. monadina, represents a green alga, which was later transferred to the genus Chlamydomonas. The taxonomic status of the genus has therefore remained unclear. We investigated 15 strains previously assigned to C. monadina and two marine species (C. reginae and C. uva-maris) using an integrative approach. Phylogenetic analyses of SSU and ITS rDNA sequences revealed that all strains form a monophyletic lineage within the Chlorophyceae containing species from different habitats. The strains studied showed similar morphology with respect to cell shape and size, but showed differences in chloroplast and pyrenoid structures. Some representatives of this group have the same type of sexual reproduction (homothallic advanced anisogamy). Three different morphotypes could be recognized. Strains belonging to type I have a cup-shaped chloroplast with a massive basal part, in which a large, single, ellipsoidal pyrenoid is located. The members of type II also have a cup-shaped chloroplast, which is partly lobed and has a thinner basal part than type I; here the pyrenoid is half-ring or horseshoe-shaped and occupies different positions in the chloroplast depending on the strain. The strains of type III have multiple pyrenoids, which appear to have developed from the subdivision of a single ring-shaped pyrenoid into several parts. We compared the results of our morphological investigations with the literature and found that 15 strains could be identified with existing species. Two strains did not fit with any described species. As a result of our study, we transfer all strains to the genus Microglena, propose 11 new combinations, and describe two new species. Comparison of the ITS-1 and ITS-2 secondary structures confirmed the species delineations. All species have characteristic compensatory base changes in their ITS secondary structures and are supported by ITS-2 DNA barcodes.

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Section: Chloroplast Morphology and Phenotypic Plasticity In Microglenamentioning

confidence: 96%

Section: Cultures and Light Microscopymentioning

confidence: 99%

Generic and species concepts inMicroglena(previously theChlamydomonas monadinagroup) revised using an integrative approach

Demchenko

Mikhailyuk

Coleman

et al. 2012

European Journal of Phycology

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“…After several passages, the algae were grown in pure liquid culture. For comparative analyses, Macrochloris multinucleata (SAG 39.36), Arthronema africanum (SAG 1.89) and Klebsormidium flaccidum (SAG 121.80) were used, all provided by the Culture Collection of Algae (SAG) at the University of Göttingen and grown under conditions as described (Schlösser 1994). Zygogonium cells from pure culture were also inoculated on a bed made of sand grains, which were taken from the sampling area and sterilized prior to use.…”

Section: Methodsmentioning

confidence: 99%

Structure and Reactivity of a Biological Soil Crust from a Xeric Sandy Soil in Central Europe

Hoppert

Reimer

Kemmling

et al. 2004

Geomicrobiology Journal

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The investigation was designed to explore the structure, composition and activity of a biological soil crust on an acidic, sandy soil from a temperate climate. The crust covers several hundreds of square meters on the hilltop of a large terminal moraine. The conjugate alga Zygogonium ericetorum forms the essential matrix for the crust, a dense web of algal filaments with interspersed lichens and mosses. The crust is composed of three layers, with an uppermost layer consisting nearly entirely of a dense algal mat. In lower layers, a parasitic fungus, penetrating the algal cells, is another important component of the crust community. In this soil crust, photosynthetic and respiratory activity is stabilized at low water activities.

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“…During this time, cells of the new species from the site (53°50′ 5.14″ N, 21°38′ 2.81″ E) where it was most abundant were isolated using a micropipette while the cells were viewed through a microscope; the micropipette was attached to the microscope. The isolated cells were transferred through multiple drops of sterile media to separate the new species from other algae, then kept in a liquid soilwater medium enriched with a small piece of garden pea (Pisum sativum) (medium 3c of Schlösser, 1994) in a growth chamber maintained at 17°C and a 16 : 8 h light : dark cycle, with c. 27 μmol photons·m −2 ·s −1 provided by cool-white fluorescent tubes (Philips, Amsterdam, the Netherlands). The culture was founded from about 30 cells.…”

Section: Sample Collection Culture Foundation and Cultivation Conditmentioning

confidence: 99%

A new photosynthetic euglenoid isolated in Poland: Euglenaria clepsydroides sp. nov. (Euglenea)

Zakryś

Karnkowska

Łukomska‐Kowalczyk

et al. 2013

European Journal of Phycology

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In this paper, we describe a new photosynthetic euglenoid species, Euglenaria clepsydroides Zakryś, sp. nov., found in Poland. A large population of this species exists in a few, small, eutrophic bodies of water inside the Masurian Landscape Park (covering a part of the Masurian Lake District in Poland). The characteristic and atypical (hourglass-like) cell shape sets it well apart from the other species that have been described up to now. This atypical cell shape has so far been observed only in three speciesLepocinclis constricta, Euglena undulata and Euglena gymnodinioides -whose other morphological characteristics, such as the number and morphology of chloroplasts, the lack of mucocysts, and nuclear SSU rDNA sequence data, exclude the possibility that they could be close relatives of Euglenaria clepsydroides. On the phylogenetic tree, the new species is situated within the Euglenaria clade. While it is a sister group of the clade that includes representatives of Euglenaria anabaena, the two species are clearly morphologically distinct.

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SAG ‐ Sammlung von Algenkulturen at the University of Göttingen Catalogue of Strains 1994

Cited by 351 publications

References 185 publications

Generic and species concepts inMicroglena(previously theChlamydomonas monadinagroup) revised using an integrative approach

Generic and species concepts inMicroglena(previously theChlamydomonas monadinagroup) revised using an integrative approach

Structure and Reactivity of a Biological Soil Crust from a Xeric Sandy Soil in Central Europe

A new photosynthetic euglenoid isolated in Poland: Euglenaria clepsydroides sp. nov. (Euglenea)

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