Results 121 to 130 of about 413 (169)
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New records of Vaucheria (Ochrophyta, Xanthophyceae) in Russia
Novosti sistematiki nizshikh rastenii, 2020This paper presents new data on the species of genus Vaucheria in Russia from analysis of original and museum collections. In total, 20 species were identified in 152 locations of 22 administrative regions of the European Russia, Western Siberia, and the Russian Far East.
V. S. Vishnyakov +6 more
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The intracellular origin of flagellar hairs in the chrysophyceae and xanthophyceae
Journal of Cell Science, 1970ABSTRACT Cells of the chrysophycean flagellate Olisthodiscus luteus contain bundles of aligned tubes and fibres within membrane-limited vesicles. Each element in a vesicle consists of a tapering portion 0 · 25 μm long, a shaft 1 · 5 μm long and a terminal fibre 0·25μm long; the shaft is approximately 15 nm in diameter and has a helical ...
G F, Leedale +2 more
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Chlorophyta, Xanthophyceae and Cyanobacteria in Wright Valley, Antarctica
Antarctic Science, 2015Abstract Wright Valley, Victoria Land contains numerous aquatic habitats suitable for the growth of algae in summer. Excepting diatoms and lichen phycobionts, algal diversity and distribution in the valley was documented.
Phil M. Novis +3 more
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Autecology and morphology of selected Vaucheria species (Xanthophyceae)
Aquatic Ecology, 2008In this study, the yellow-green alga Vaucheria was collected from 86 sites with different environmental characteristics. A principal component analysis of the sites revealed a model with four principal components explaining 64.7% of the total variance in the data set.
Michael Schagerl, Maria Kerschbaumer
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Validation of the name Asterosiphon dichotomus (Xanthophyceae)
Phytotaxa, 2019Asterosiphon Dangeard (1940: 720) presents a monospecific genus of xanthophytes, which can be easily distinguished from other genera in having filamentous siphons and exclusively asexual reproduction. Asterosiphon species forms macroscopic rosette of a few millimeters in diameter consisting of green procumbent and dichotomously branched siphons which ...
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Structural organization and evolution of the plastid genome of Vaucheria sessilis (Xanthophyceae)
Biosystems, 1988The plastid DNAs of 18 Vaucheria sessilis strains from various habitats in western Europe were digested with the restriction endonucleases Eco RI, Sal I, Bam HI and Pvu II. Their restriction patterns showed variable fragment divergencies. Two main groups of plastid genomes were recognized, which were substantiated by morphological features.
K H, Linne von Berg, K V, Kowallik
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Feinbau und Carotinoide von Tribonema (Xanthophyceae)
Archiv f�r Mikrobiologie, 1968Zell-Feinbau und Carotinoidausstattung wurde bei drei Arten der Xanthophyceengattung Tribonema untersucht: Tr. viride (Freilandmaterial), Tr. aequale und Tr. minus (Kulturmaterial). Wahrend die beiden letzteren nur einen Kern je Zelle enthielten, traten bei Tr. viride bis zu sechs Kerne je Zelle auf.
H. Falk, H. Kleinig
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The genus Vaucheria (Xanthophyceae) in Russia: morphotaxonomic diversity and distribution
Issues of modern algology (Вопросы современной альгологии), 2021During 2011–2020, the Vaucheria species of Russia have been studied in terms of morphotaxonomic diversity and regional distribution. Twenty-nine species and varieties were identified on the base of microscopical observation of 1230 fertile specimens. Of these, 15 species and varieties are reported for Russia for the first time.
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Antheraxanthin-Zeaxanthin-Umwandlung in Vaucheria sessilis (Xanthophyceae)
Planta, 1967There is a light-induced transformation of antheraxanthin to zeaxanthin in the heterokont alga Vaucheria. This reaction can be reversed in the dark. The other carotenoids remain unchanged under the influence of light.
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