Results 131 to 140 of about 411 (163)

Symplast domains in extrastelar tissues of Egeria densa Planch.

Planta, 1985
A set of hydrophilic fluorescent dyes of known molecular weight has been used to determine the molecular exclusion limit and the extent of apical, epidermal and cortical symplasts in the root, stem and leaf of Egeria densa. These dyes are unable to pass the plasmalemma, so that any cell-to-cell movement of injected dye must occur via the symplast.
M G, Erwee, P B, Goodwin
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Compartmentation of fluorescent tracers injected into the epidermal cells of Egeria densa leaves

Planta, 1990
We have compared the movement of a series of fluorescent tracers of increasing molecular weight injected into the cytoplasm in the epidermal cells of leaves of Egeria densa Planch. In general, the tracers showed major movement into three cellular compartments: first, to the cytoplasm of adjacent cells; secondly, from the cytoplasm, to the vacuole ...
P B, Goodwin, V, Shepherd, M G, Erwee
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Ion distribution in leaf cells of Egeria densa.

Acta histochemica. Supplementband, 1991
The lement concentrations of intracellular compartments of leaf cells of Egeria densa are estimated by X-ray microanalysis. Ultrathin frozen-dried sections are used in TEM mode. The concentrations of Na, Mg, P, Cl, K, and Ca are determined in the cell wall, cytoplasm and chloroplasts.
G, Linsel, T, Zglinicki
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Identification of myosin in a flowering plant, Egeria densa.

Journal of biochemistry, 1979
A myosin-like protein was extracted and partially purified from a flowering plant, Egeria densa. It had no p-nitrophenyl phosphatase activity, but exhibited EDTA(K+)-ATPase [EC 3.6.1.3] activity at high ionic strength. Its molecular weight as estimated by gel filtration was 4-5 X 10(5).
K, Ohsuka, A, Inoue
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Malate synthesis and metabolism during photosynthesis in Egeria densa planch

Aquatic Botany, 1980
Abstract During pulse-chase labelling experiments at air levels of CO 2 (pH 4.5; 13 μ M CO 2 (aq.)) Egeria densa Planch. fixed 20% of its photosynthetic carbon by β-carbboxylation into the C-4 of malate. Further label, which entered the malate pool via the three carbon precursors, was derived from secondary photosynthetic products (sugar ...
J.A. Browse, J.M.A. Brown, F.I. Dromgoole   +2 more
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Effects of inorganic carbon source on photosynthetic rates of Egeria najas Planchon and Egeria densa Planchon (Hydrocharitaceae)

Aquatic Botany, 2004
Abstract The ability of two submerged freshwater macrophyte species, Egeria najas Planchon and Egeria densa Planchon to use HCO 3 − as a source of inorganic carbon for photosynthesis was assessed by a pH drift experiment. The pH values and different HCO 3 − concentrations were set up at the beginning of the experiments, in low and high ...
S.A Pierini, S.M Thomaz
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The Effect of Different Concentrations of Iron on the Growth of Egeria (Elodea) Densa

Journal of Emerging Investigators, 2015
Iron-containing substances are known to affect the growth of many aquatic plants, such as Egeria densa. However, the concentration of these substances on the growth of E. densa was unknown to our best knowledge. We designed and performed an experiment to explore the effect of different iron concentration levels on E. densa.
Alexander Hu, Stacey Holliday, Steven Smith   +2 more
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Mechanical properties of the lacunar gas in Egeria densa Planch. shoots

Aquatic Botany, 1996
Abstract The effects of varying internal and external pressures on the lacunar gas system were examined for the submerged macrophyte Egeria densa Planch. Application of 30 kPa to cut shoots caused gas flow in accordance with the Poiseuille equation, once the meniscus formed by surface tension and hydrostatic pressure was broken.
Sorrell, B. K.; id_orcid 0000-0002-2460-8438, Dromgoole, F. L.   +1 more
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Photosynthetic and growth responses of Egeria densa to photosynthetic active radiation

Aquatic Botany, 2010
Abstract Egeria densa , a submerged aquatic macrophyte native to South America, has successfully invaded many reservoirs in Brazil and elsewhere. Ecophysiological responses of E. densa to light availability were assessed in microcosm experiments. Under low light conditions, we found that apical shoots expanded more rapidly than those under higher ...
Roberta Becker Rodrigues, Sidinei Magela Thomaz   +1 more
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Egeria densa Planchon (Hydrocharitaceae) ??? ?????????? ?????? ?????? ?????????????????????? ?????????????? ??????????????

2009
There is new species of the water vascular plant Egeria densa Planchon has been found in the Dnip-ro near Kyiv.
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