GROWTH RESPONSE OF Euglena gracilis & Selenastrum capricornutum IN RESPONSE TO pH
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Different Sensitivities of Selenastrum capricornutum and Toxic Strain Microcystis aeruginosa to Exudates from Two Potamogeton Species
The sensitivities of Selenastrum capricornutum and the toxic strain Microcystis aeruginosa to exudates from Potamogeton maackianus and P. malaianus were compared using exudation experiment, and the potential allelochemicals released by these two pondweeds into surrounding water were also analyzed. The growth of S. capricornutum and M. aeruginosa was inhibited by the exudates from the two macrop...
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This study aims to assess the effects of two pesticides, namely the insecticide carbofuran and the herbicide isoproturon, on monospecifically cultivated marine and freshwater phytoplankton according to standard methods. In the presence of pesticide, growth rates were lower in marine species Chaetoceros gracilis and Phaeodactylum tricornutum than in freshwater species Chlorella vulgaris and Sele...
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Shade tolerance is a key adaptive strategy displayed by heliophytic photosynthetic organisms in response to limited light. Although generalized morphological and physiological traits associated with shade tolerance exist, the interest in shade tolerance has been expanding over the past few years due primarily to the controversies that have emerged on classical hypotheses of shade tolerance. In ...
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The recently described method for the activation of the Ca(2+)-ATPase of coupling factor 1 from chloroplasts (CF(1)) of Euglena gracilis by low pH occurs optimally in high concentrations of NaCl, and is unaffected by the acid used to lower the pH to 4.5. Activation is inhibited by light, and this effect can be reversed by the presence of NADP(+), ADP + inorganic phosphate, or an uncoupler. Ther...
متن کاملDifferent Porphobilinogenases in Cytoplasm and Isolated Chloroplasts from Light-Grown Euglena gracilis Z
Fachbereich Biologie/Botanik, Philipps-Universität Marburg. D-3550 Marburg. Bundesrepublik Deutschland Z. Naturforsch. 44c, 81 — 84 (1989); received September 26. 1988 Porphyrinogens. Euglena gracilis Z ., Porphyrin Biosynthesis. Porphobilinogenase. Euglena Chloroplasts Lysed cells as well as different fractions of isolated, disrupted chloroplasts from light grown Euglena gracilis were tested f...
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