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Photosynthesis of lichens from lichen-dominated communities in the alpine/nival belt of the Alps – II: Laboratory and field measurements of CO2 exchange and water relations
Abstract CO 2 exchange and water relations of selected lichen species were investigated in the field and also in the laboratory, at a height of 3106 m above sea level in the Austrian Alps, during theExpand
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In-vitro germination and growth of lily pollen tubes is affected by protein phosphatase inhibitors
Abstract. Inhibitors of type-2A protein phosphatase (PPase-2A), calyculin A (cal A) and okadaic acid (OA), inhibit pollen grain germination and growth of pollen tubes of Lilium longiflorum Thunb. atExpand
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Ultrastructural localization of polysaccharides and N-acetyl-d-galactosamine in the secretory pathway of green algae (Desmidiaceae)
In order to characterize the secretory pathway leading to multipolar tip growth in green algae of the family Desmidiaceae, different general polysaccharide stainings, such as the periodic acid-silverExpand
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Oxidative burst in Chenopodium rubrum suspension cells: Induction by auxin and osmotic changes
Lowering of the osmotic value of the medium has been reported previously to induce an oxidative burst in plant cells. This has been explained by a sequence of events, including solute influx,Expand
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CYTOCHALASIN B INFLUENCES DICTYOSOMAL VESICLE PRODUCTION AND MORPHOGENESIS IN THE DESMID EUASTRUM 1
Cytochalasin B (CB) applied to young developing cells of the desmid Euastrum oblongum Ralfs ex Ralfs, at concentrations that do not entirely inhibit cytoplasmic streaming, retarded cell growth andExpand
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Subcellular Sequestration and Impact of Heavy Metals on the Ultrastructure and Physiology of the Multicellular Freshwater Alga Desmidium swartzii
Due to modern life with increasing traffic, industrial production and agricultural practices, high amounts of heavy metals enter ecosystems and pollute soil and water. As a result, metals can beExpand
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SEPTUM FORMATION IN THE DESMID XANTHIDIUM (CHLOROPHYTA): EFFECTS OF CYTOCHALASIN D AND LATRUNCULIN B SUGGEST THE INVOLVEMENT OF ACTIN MICROFILAMENTS
Septum formation and mitosis were investigated by light and electron microscopical techniques as well as through the completion of inhibitor experiments in the unicellular desmid Xanthidium armatumExpand
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MICROTUBULE‐MICROFILAMENT‐CONTROLLED NUCLEAR MIGRATION IN THE DESMID EUASTRUM OBLONGUM 1
Postmitotic nuclear migration in Euastrum oblongnum Ralfs ex Ralfs starts about 80 min after septum formation with the nucleus leaving its central position in the isthmus and moving into the growingExpand
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Disturbance of the secretory pathway inMicrasterias denticulata by tunicamycin and cyclopiazonic acid
SummaryBoth tunicamycin, an inhibitor of N-linked glycosylation of proteins, and cyclopiazonic acid, which inhibits the Ca2+-dependent ATPase in the ER, influence the secretory pathway at the ERExpand
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