Results 71 to 80 of about 247 (116)
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Changes in membrane potential and delayed luminescence of Acetabularia acetabulum
Journal of Photochemistry and Photobiology B: Biology, 2000This paper examines the effect of changes in membrane potential on the critical parameters of delayed luminescence of Acetabularia acetabulum. We show that these parameters are altered by changes in membrane potential in ways that may reflect concomitant changes in energy storage and energy coupling.
Antonio Triglia, M W Ho
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Functional expression of Acetabularia acetabulum vacuolar H+-pyrophosphatase in a yeast VMA3-deficient strain [PDF]
Journal of Experimental Botany, 2002 The function of the translation product of cDNA for Acetabularia vacuolar H(+)-pyrophosphatase was examined using the Saccharomyces cerevisiae VMA3-deficient strain. The open reading frame of Acetabularia H(+)-pyrophosphatase was revealed to encode 751 amino acids (721 or 751 amino acids in a previous paper).
Masayoshi Maeshima, Mikiko Ikeda
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A vacuolar ATPase and pyrophosphatase in Acetabularia acetabulum
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1991Vacuole-rich fractions were isolated from Acetabularia acetabulum by Ficoll step gradient centrifugation. The tonoplast-rich vesicles showed ATP-dependent and pyrophosphate-dependent H(+)-transport activities. ATP-dependent H(+)-transport and ATPase activity were both inhibited by the addition of a specific inhibitor of vacuolar ATPase, bafilomycin B1.
M, Ikeda +4 more
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Population analysis of reproductive cell structures of Acetabularia acetabulum (Chlorophyta)
Phycologia, 1992Abstract To facilitate genetic selections of Acetabularia acetabulum (Linnaeus) P.C. Silva (Chlorophyta), phenotypic variations in six reproductive structures are described and quantified in a laboratory strain. Cap diameter, the number of rays per cap, the empty ray length, ray length filled with cysts, the number of cysts per ray, and cyst diameter ...
D F Mandoli
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An analysis of morphogenesis of the reproductive whorl of Acetabularia acetabulum
Planta, 1998Acetabularia acetabulum (Linn.) P.C. Silva, is a useful system for studying changes in shape because it is large, morphologically complex unicell. The middle, or gametophore lobe of the cap grows radially from the stalk axis as a disc and the fully grown cap can be one of several shapes: flat, concave, convex, and saddle.
Kyle A. Serikawa, Dina F. Mandoli
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Planta, 1999
At reproductive onset the marine green alga Acetabularia acetabulum (L.) P.C. Silva redirects growth from vertical elongation of the axis of the plant to lateral expansion of a disk-shaped reproductive structure, the "cap." We used amputation to synchronize cap initiation and to facilitate investigation of the light requirements during amputation ...
R F, Kratz, D F, Mandoli
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At reproductive onset the marine green alga Acetabularia acetabulum (L.) P.C. Silva redirects growth from vertical elongation of the axis of the plant to lateral expansion of a disk-shaped reproductive structure, the "cap." We used amputation to synchronize cap initiation and to facilitate investigation of the light requirements during amputation ...
R F, Kratz, D F, Mandoli
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Influence of cations in extracellular liquid on delayed luminescence of Acetabularia acetabulum
Journal of Photochemistry and Photobiology B: Biology, 1998Abstract This paper examines the effect of cations in the culture medium on the critical parameters of delayed luminescence of Acetabularia acetabulum that are correlated with morphological changes. We show that Ca2+ has drastic effects on the cell, causing rapid, irreversible contraction of the cytoskeleton and chloroplasts; these effects are only ...
M. W. HO +3 more
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Coherence and Biophoton Emission as Investigated on Acetabularia Acetabulum
1998In this paper are examined some characteristics of Delayed Luminescence in simple biological systems and in preparations of Cadmium Sulfide which are different only in the dimension of the grains in which the system is aggregated.
MUSUMECI, Francesco +2 more
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Effects of isoflurane on measurements of delayed lumininescence in Acetabularia acetabulum
Luminescence, 2005AbstractThe volatile halogenated methyl ethyl ether, isoflurane, used as an anaesthetic, inhibits actin‐based dynamics directly or indirectly in animal cells. In plant cells, most intracellular movements are related to actin pathways. We have used isoflurane in a unicellular alga, Acetabularia acetabulum, to test the dynamics of choloroplast ...
Wen Li, Chen +2 more
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Journal of Photochemistry and Photobiology B: Biology, 1999
Abstract This paper reports results of ‘simultaneous’ measurements of chloroplast streaming and delayed luminescence of Acetabularia cells. We show that freezing in liquid nitrogen or incubation in chloroform affects significantly and rapidly both the organelle motility and delayed luminescence decay.
R. VAN WIJK +3 more
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Abstract This paper reports results of ‘simultaneous’ measurements of chloroplast streaming and delayed luminescence of Acetabularia cells. We show that freezing in liquid nitrogen or incubation in chloroform affects significantly and rapidly both the organelle motility and delayed luminescence decay.
R. VAN WIJK +3 more
openaire +2 more sources