Results 61 to 70 of about 105 (80)
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Phycologia, 1987
Abstract In Chlorodesmis jastigiata, a remarkable variety of specifically structured material is found in the central vacuole immersed in an ill-defined granular-fibrillar matrix. This material fills the central vacuole throughout the entire length of the dichotomously branched cell of several centimeters' it is most dense in the tip.
Diedrik Menzel
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Abstract In Chlorodesmis jastigiata, a remarkable variety of specifically structured material is found in the central vacuole immersed in an ill-defined granular-fibrillar matrix. This material fills the central vacuole throughout the entire length of the dichotomously branched cell of several centimeters' it is most dense in the tip.
Diedrik Menzel
exaly +2 more sources
PALAIOS, 1993
Remarkably well-preserved fossils of the udoteacean alga Eugonophyllvm occur in the Virgilian Holder Formation, Sacramento Mountains, south-central New Mexico in a 20-cm-thick packstone bed between two thick shale beds. Original aragonite is preserved in this bed as a felt-like mesh of needles in algal thalli, in mollusc shell fragments, in sponge ...
B. L. Kirkland +2 more
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Remarkably well-preserved fossils of the udoteacean alga Eugonophyllvm occur in the Virgilian Holder Formation, Sacramento Mountains, south-central New Mexico in a 20-cm-thick packstone bed between two thick shale beds. Original aragonite is preserved in this bed as a felt-like mesh of needles in algal thalli, in mollusc shell fragments, in sponge ...
B. L. Kirkland +2 more
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Journal of Phycology, 2008
The placement of Avrainvillea and Cladocephalus in the family Udoteaceae (order Bryopsidales) has been questioned on the basis of nuclear, plastid, and other ultrastructural characteristics unique to these genera. Bayesian analysis of the chloroplast‐encoded LSU RUBISCO (rbcL) gene showed that the Udoteaceae is paraphyletic.
Nicholas E, Curtis +2 more
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The placement of Avrainvillea and Cladocephalus in the family Udoteaceae (order Bryopsidales) has been questioned on the basis of nuclear, plastid, and other ultrastructural characteristics unique to these genera. Bayesian analysis of the chloroplast‐encoded LSU RUBISCO (rbcL) gene showed that the Udoteaceae is paraphyletic.
Nicholas E, Curtis +2 more
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Protoplasma, 1985
In the dichotomously branched caulerpalean green algaChlorodesmis fastigiata long range cytoplasmic streams run through the siphon and form a network of shorter strands in the region of the bulbous enlargement of the dichotomies. Continuous transport of organelles occurs along these streams, which are contructed of a central bundle of microtubules ...
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In the dichotomously branched caulerpalean green algaChlorodesmis fastigiata long range cytoplasmic streams run through the siphon and form a network of shorter strands in the region of the bulbous enlargement of the dichotomies. Continuous transport of organelles occurs along these streams, which are contructed of a central bundle of microtubules ...
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Planta, 1983
A dramatic tubular reorganization of the plastid envelope in injury-stressed cytoplasm of the siphonous green alga Chlorodesmis fastigiata is described and discussed as a process of membrane self-assembly under drastic changes in the microenvironment of the organelle.
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A dramatic tubular reorganization of the plastid envelope in injury-stressed cytoplasm of the siphonous green alga Chlorodesmis fastigiata is described and discussed as a process of membrane self-assembly under drastic changes in the microenvironment of the organelle.
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Internationale Revue der gesamten Hydrobiologie und Hydrographie, 1973
AbstractThe mucilages of this alga contain acid polysaccharides, some of which are Ca binding. After deproteinization and gel filtration the residue of the aqueous algal extract has the composition: 2% complexed protein, 3–4% Ca, 0.4–0.5% SiO2, 0.03–0.04% Al, ∼ 0.005% Fe, rest: polysaccharide. The molecular weights of the major and minor polysaccharide
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AbstractThe mucilages of this alga contain acid polysaccharides, some of which are Ca binding. After deproteinization and gel filtration the residue of the aqueous algal extract has the composition: 2% complexed protein, 3–4% Ca, 0.4–0.5% SiO2, 0.03–0.04% Al, ∼ 0.005% Fe, rest: polysaccharide. The molecular weights of the major and minor polysaccharide
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2010
The first record of Penicillus capitatus Lamarck from the Gulf of Antalya (Turkey) is reported. The species was found only in the typical stage in April, May and June 2006 and in June 2007. The occurrence of this tropical species in the Gulf of Antalya should be considered as a sign of the climatic change towards a “tropicalization” that is affecting ...
TURNA, İsmail İbrahim +2 more
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The first record of Penicillus capitatus Lamarck from the Gulf of Antalya (Turkey) is reported. The species was found only in the typical stage in April, May and June 2006 and in June 2007. The occurrence of this tropical species in the Gulf of Antalya should be considered as a sign of the climatic change towards a “tropicalization” that is affecting ...
TURNA, İsmail İbrahim +2 more
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Diversité et évolution des algues vertes Udoteaceae et Rhipiliaceae (Bryopsidales, Chlorophyta)
Les macroalgues sont des éléments essentiels des écosystèmes marins y compris des récifs coralliens, particulièrement concernés par les changements globaux. La conservation de la biodiversité représente un enjeu majeur dans ces milieux et c’est dans ce contexte que cette étude s’est intéressée à deux familles d’algues vertes, Udoteaceae et Rhipiliaceae,openaire +1 more source