| fine-structural studies of the gametes and embryo of fucus vesiculosus l. (phaeophyta). ii. the cytoplasm of the egg and young zygote. | following fertilization, there are rapid changes in the appearance of the fucus egg. large electron-translucent vesicles (v1) accumulate fibrillar material, and following pronuclear fusion, they are largely electron-opaque. these vesicles (v1) are formed originally in unfertilized eggs by smooth endoplasmic reticulum (ser) after release of the eggs from the oogonium. golgi complex hypertrophy follows fertilization, and this increased activity continues throughout early embryogenesis. wall format ... | 1976 | 944190 |
| fine-structural studies of the gametes and embryo of fucus vesiculosus l. (phaeophyta). i. fertilization and pronuclear fusion. | in the marine brown alga, fucus vesiculosus l., the sperm pronucleus is delimited by an envelope following penetration of the eff by the sperm. this envelope disintegrates as the pronucleus begins its migration through the cytoplasm of the egg. the highly condensed chromatin of the sperm pronucleus disperses slightly following disintegration of the envelope. microtubules of unknown origin are associated with the sperm pronucleus during its migration. the flagellar microtubules remain in the peri ... | 1976 | 944189 |
| physodes and the phenolic compounds of brown algae. isolation and characterization of phloroglucinol polymers from fucus vesiculosus (l.) | a series of vanillin-reactive compounds has been isolated from extracts of the brown alga fucus vesiculosus. the first three members of this series have been examined by mass spectrometry, nuclear magnetic resonance spectrometry, and chemical methods, and were shown to be phloroglucinol, its phenyl-linked dimer, and a timer also composed of phloroglucinol units. evidence is presented for the presence of tetrameric, pentameric, and hexameric phloroglucinol derivatives. polymeric vanillin-reactive ... | 1976 | 1252984 |
| [structure, amount and composition of sulfuric, sulfonic and phosphoric esters of glycosyldiglycerides of three fucacea]. | the mono and polyester glycosyl sulfates or phosphate diglycerides account for a group of polar lipids which is found in large amounts in the three fucacae that are studied: pelvetia canaliculata (l) deen and thur, fucus vesiculosus (l), fucus serratus (l). these polar lipids have been shown to have complex structures, most of them are unknown in the present nomenclature. both quantity and composition of these polar lipids are species characteristics, forming the equipment of polar lipids for ev ... | 1976 | 1016655 |
| [polar lipids from pelvetia canaliculata (l) dech. and thur., fucus vesiculosus l. and fucus servatus l]. | | 1974 | 4374970 |
| [determination of fucosterol in fucus vesiculosus l. and in extracts of fucus vesiculosus l]. | | 1970 | 5502285 |
| sulphated polysaccharides in brown algae. 3. the native state of dfucoidan in ascophyllum nodosum and fucus vesiculosus. | | 1970 | 5501728 |
| changes in the polysomal pattern after fertilization in fucus eggs. | at high potassium concentrations it is possible to isolate largely intact polysomes from fertilized and unfertilized fucus vesiculosus eggs, and to study the distribution pattern of ribosomal particles in a sucrose gradient. the changes in the ribosomal pattern before and after fertilization reflect the time course of protein synthesis. in the unfertilized egg there is a pool of inactive light polysomes which are fairly resistant to ribonuclease treatment, whilst a heavier polysomal fraction sho ... | 1969 | 24515590 |
| [fatty acids on the galactolipids from the red alga batrachospermum moniliforme and the brown alga fucus vesiculosus]. | | 1968 | 5706136 |
| amino acid incorporation in developing fucus embryos. | the incorporation of (14)c-leucine and (14)c-amino acid mixture into protein in unfertilized eggs and developing embryos of the brown alga fucus vesiculosus l. was studied. bacterial contamination was initially a problem, but it was found that the addition of 40 mug/ml chloramphenicol to the incubation medium would inhibit bacterial protein synthesis without affecting early development of the fucus embryos. the kinetics of uptake and incorporation of (14)c-leucine into the trichloroacetic acid-s ... | 1968 | 16656865 |
| the influence of epiphytic bacteriae on auxin metabolism. | plants are settled by epiphytic bacteriae able to convert tryptophan to iaa. this bacterial activity is abolished by chloramphenicol and streptomycin but not by penicillin. tryptophan conversion to iaa by plant parts or enzyme preparations is far more intensive in non-sterile conditions than in sterile ones. this is true for all investigated objects: helianthus annuus, phaseolus vulgaris, pisum sativum, triticum vulgare, zea mays, enteromorpha compressa, fucus vesiculosus, furcellaria fastigiata ... | 1966 | 24557783 |
| potentiation of photosynthetic oxygen evolution in red light by small quantities of monochromatic blue light. | growth of the giant unicellular green alga, acetabularia crenulata, stops in red light of broad spectral composition, but can be restored by the addition of small quantities of blue light. long-term records of o(2) evolution indicate that the photosynthesis of acetabularia responds in a parallel manner to blue light. cells photosynthesizing at a light-limited rate in white light were given red light at an intensity that served to match or somewhat increase the instantaneous rate of o(2) producti ... | 1966 | 16656414 |
| thermal stability of threonine in the presence of a marine polyphenolic material. | the rate of decomposition of threonine in 0.01m aqueous solution is unaffected by an equimolar concentration of pyrocatechol, but is increased by the addition of an extracellular polyphenolic material (3 mg/ml) produced by fucus vesiculosus. glycine, a pyrolytic product of threonine, behaves similarly. | 1966 | 17746339 |
| biosynthesis of radioactive mannitol from c1402 by fucus vesiculosus. | | 1958 | 13592252 |
| on the nitrogenous constituents of fucus vesiculosus. | | 1953 | 13129263 |
| the algae: the lipochromes of fucus vesiculosus. | | 1935 | 16745801 |
| on the rate of oxygen consumption by fertilized and unfertilized eggs : i. fucus vesiculosus. | 1. the unfertilized eggs of fucus vesiculosus, in the dark, consume about 5.2 mm.(3) o(2) per hour per 10 mm.(3) eggs. 2. with an illumination of 100,000 foot candles in photosynthesis they liberate more than twice as much oxygen as they consume. 3. the actively swimming antherozoids or sperm of fucus consume oxygen at a very high rate: 25.5 mm.(3) o(2) per hour per 10 mm.(3) antherozoids. 4. immediately following fertilization, in the dark, the fucus eggs increase the rate of oxygen consumption ... | 1931 | 19872637 |