• Medientyp: E-Artikel
  • Titel: Die Wirkung von Dinactin auf Volumenänderungen ganzer Chloroplasten im Licht und im Dunkeln
  • Beteiligte: Bosshard-Heer, Elisabeth; Bachofen, Reinhard
  • Erschienen: Springer-Verlag, 1970
  • Erschienen in: Planta
  • Umfang: 204-211
  • Sprache: Deutsch
  • ISSN: 0032-0935; 1432-2048
  • Zusammenfassung: <p>1. Whole chloroplasts exhibit a fast and strong swelling after addition of dinactin (final concentration 10-5 m). 2. When illuminated the particles shrink again and reach their original volume after 15 minutes. ATP may replace the light in this energy-dependent volume reduction. 3. Both swelling and subsequent shrinking are more pronounced in a hypertonic solution of KCl than in a NaCl-medium of the same concentration. 4. These results are discussed in relation to the known ion selectivity of the macrotetralides and the possible presence of light-driven K+ pump.</p>
  • Beschreibung: <p>1. Whole chloroplasts exhibit a fast and strong swelling after addition of dinactin (final concentration 10-5 m). 2. When illuminated the particles shrink again and reach their original volume after 15 minutes. ATP may replace the light in this energy-dependent volume reduction. 3. Both swelling and subsequent shrinking are more pronounced in a hypertonic solution of KCl than in a NaCl-medium of the same concentration. 4. These results are discussed in relation to the known ion selectivity of the macrotetralides and the possible presence of light-driven K+ pump.</p>
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