Results 251 to 260 of about 64,347 (303)
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Botanical Journal of the Linnean Society, 1995
For 200 years prior to the 1938 publication of H. F. Copeland, all authorities (with one exception) classified red algae (Rhodophyta) within Kingdom Plantae or its equivalent. Copeland's reclassification of red algae within Kingdom Protista or Protoctista drew from an alternative tradition, dating to Cohn in 1867, in which red algae were viewed as the ...
Ragan, MA, Gutell, RR
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For 200 years prior to the 1938 publication of H. F. Copeland, all authorities (with one exception) classified red algae (Rhodophyta) within Kingdom Plantae or its equivalent. Copeland's reclassification of red algae within Kingdom Protista or Protoctista drew from an alternative tradition, dating to Cohn in 1867, in which red algae were viewed as the ...
Ragan, MA, Gutell, RR
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Planta, 2014
Leucine-(U)-C(14) applied to the midrib of a young phylloid of Delesseria sanguinea moves basipetally and acropetally and eventually appears in other phylloids of the same plant. The highest velocity of transport calculated was 63 cm/h. The pathway of movement seems to be the veins of the phylloids and the central core of the cauloid.
T, Hartmann, W, Eschrich
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Leucine-(U)-C(14) applied to the midrib of a young phylloid of Delesseria sanguinea moves basipetally and acropetally and eventually appears in other phylloids of the same plant. The highest velocity of transport calculated was 63 cm/h. The pathway of movement seems to be the veins of the phylloids and the central core of the cauloid.
T, Hartmann, W, Eschrich
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Phytochemistry, 1976
Abstract Twelve species of red algae belonging to the Orders Gelidiales, Cryptonemiales and Gigartinales were examined for sterols. Four species contained cholestan-3β-ol as the major sterol, accompanied by C 26 , C 28 and C 29 stanols. Sterols not previously reported in algae were 24-dimethyl-5α-chol-22-en-3β-ol, cholest-22-en-3β-ol, cholest-7-en ...
Isabelle Chardon-Loriaux +2 more
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Abstract Twelve species of red algae belonging to the Orders Gelidiales, Cryptonemiales and Gigartinales were examined for sterols. Four species contained cholestan-3β-ol as the major sterol, accompanied by C 26 , C 28 and C 29 stanols. Sterols not previously reported in algae were 24-dimethyl-5α-chol-22-en-3β-ol, cholest-22-en-3β-ol, cholest-7-en ...
Isabelle Chardon-Loriaux +2 more
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Phytochemistry, 1975
Abstract The sterol composition of 17 red algae has been determined. Only C-27 sterols have been found in substantial amounts; details of the structural elucidation of liagosterol (cholesta-5,23-diene-3β,25-diol) are given. The possible taxonomic significance of the sterol distribution is briefly discussed.
Ernesto Fattorusso +8 more
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Abstract The sterol composition of 17 red algae has been determined. Only C-27 sterols have been found in substantial amounts; details of the structural elucidation of liagosterol (cholesta-5,23-diene-3β,25-diol) are given. The possible taxonomic significance of the sterol distribution is briefly discussed.
Ernesto Fattorusso +8 more
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Polysaccharides of the red algae
2011Red algae (Rhodophyta) are known as the source of unique sulfated galactans, such as agar, agarose, and carrageenans. The wide practical uses of these polysaccharides are based on their ability to form strong gels in aqueous solutions. Gelling polysaccharides usually have molecules built up of repeating disaccharide units with a regular distribution of
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Ultrastructure of unicellular red algae
1994The phylum Rhodophyta is an enigmatic as semblage of organisms whose phylogenetic relationships with other eukaryotes are shrouded in uncertainty. The group was long held to be among the most primitive eukaryotes due to the lack of a centriole complex and the similarities between the red algal chloroplast and cyanobacteria (Garbary and Gabrielson 1990).
Sharon T. Broadwater, Joseph L. Scott
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