Results 261 to 270 of about 41,410 (313)
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Abteilung Rhodophyta (Rotalgen)
1987Den Rotalgen fehlt eine nahere Verbindung zu den anderen Abteilungen. Sie sind uberwiegend marin und kommen vor allem in groseren Tiefen, bis zu 200 m, vor. Die Zellwand enthalt Zellulose und Pektin. Das letztere dominiert. Pektinartige Stoffe werden technisch verwendet (Agar, Carrageen, vgl. S. 32).
Meinrad Küttel, Gertrud Dahlgren
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Sterols of the amansieae (rhodomelaceae: Rhodophyta)
Phytochemistry, 1984Abstract Osmundaria prolifera, kuetzingia natalensis, Halopythis pinastroides and Vidalia fimbriata contain C 27 sterols as the major sterols. Six other species of the Amansieae, belonging to the genera Amansia, Vidalia, Lenormandia and Rythiphlaea, contain C 28 -sterols as the major sterols.
Combaut, Georges, Saenger, Peter
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Gracilaria (Gigartinales, Rhodophyta) and productivity
Aquatic Botany, 1986Gracilaria is a genus with a large number of species, many of which have been utilized for a variety of purposes. The chaotic state of the intraspecific taxonomy is a major deterrent in relating information and studying this genus. The majority of species occur in warm-water and tropical habitats, although the greatest standing stocks, usually as free ...
J. McLachlan, C.J. Bird
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Systematics of red algae (Rhodophyta)
Critical Reviews in Plant Sciences, 1986Red algal systematics is in a state of flux unparalleled since the early decades of this century. Ultrastructural and biochemical studies are providing features for a revised classification at ordinal and supraordinal ranks, whereas characters of vegetative and reproductive morphology continue to establish discontinuities among taxa at lower ranks ...
Paul W. Gabrielson +2 more
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Cellulose in the Cell Walls of the Bangiophyceae (Rhodophyta)
Science, 1980Mechanically isolated cell walls of the conchocelis phase of Bangia fuscopurpurea yield cellulose II (regenerated cellulose) upon treatment with Schweitzer's reagent. X-ray powder analysis and thin-layer chromatography of partial hydrolyzates confirm the presence of cellulose in this extract.
Milton R. Sommerfeld +2 more
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Botanica Marina, 2016
Abstract Epiphytism is a major problem world-wide for the Gracilaria mariculture industry that reduces the productivity of commercial farms. Most of the epiphytes associated with Gracilaria chilensis belong to the order Ceramiales. Under laboratory conditions we studied the infection process of Ceramium rubrum rhizoids on G.
Michetti, Karina Mariel +3 more
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Abstract Epiphytism is a major problem world-wide for the Gracilaria mariculture industry that reduces the productivity of commercial farms. Most of the epiphytes associated with Gracilaria chilensis belong to the order Ceramiales. Under laboratory conditions we studied the infection process of Ceramium rubrum rhizoids on G.
Michetti, Karina Mariel +3 more
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Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
Botanica Marina, 2002Alsidium corallinum C. Agardh from the Mar Grande of Taranto (Ionian Sea, Mediterranean Sea) reproduced primarily by propagules. These were starch- filled branchlets subtended by little-pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 Ým.
Cecere E, Saracino OD, Petrocelli A
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On the phylogenetic relationships of the Acrochaetiaceae (Rhodophyta)
British Phycological Journal, 1978Five phylogenetic schemes are presented for the Acrochaetiaceae based on comparative morphology and ultrastructure. The relationships between the possible phylogenetic relatives of the family and the taxonomic rank at which the group can be recognized are discussed.
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SYSTEMATICS OF THE BATRACHOSPERMALES (RHODOPHYTA)—A SYNTHESIS1
Journal of Phycology, 2009Recent molecular and morphological data necessitate a major taxonomic revision of the Batrachospermales, an order of red algae, distributed in freshwater habitats throughout the world. This article is a synthesis of available information with some targeted additional sequence data, resulting in a few relatively conservative taxonomic changes to begin ...
Entwisle, Timothy J. +4 more
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RECENT RADIATION OF THE PALMARIACEAE (RHODOPHYTA)1
Journal of Phycology, 1996ABSTRACTMolecular phylogenetic studies on the evolution of the red algae indicate that this ancient division has many lineages that have recently undergone radiations. One such example is the cold–temperate family Palmariaceae. In this study, sequences from the ribosomal DNA internal transcribed spacer regions were compared among ten species in the ...
Wytze T. Stam +2 more
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