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'Vacuole' in keywords Facet   Publication Year 1985  [X]
Facet   section ZfN Section C  [X]
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1985[X]
1Author    J.M F G Aerts, A. W. SchramRequires cookie*
 Title    Isolation of Vacuoles from the Upper Epidermis of Petunia Hybrida Petals I. A Comparison of Isolation Procedures  
 Abstract    Vacuoles were isolated from the upper epiderm is o f petals o f Petunia hybrida line R27 using three different procedures. U tilizing the vacuolar localization o f anthocyanin, vacuolar prep­ arations obtained through polybase treatment, osm otic shock and m echanical forces were com ­ pared on purity, yield and stability. The com parison indicated that application o f the polybase procedure results in the best vacuolar preparations. Vacuoles could be obtained which m ain­ tained their acidic pH and retained their anthocyanin content. 
  Reference    Z. Naturforsch. 40c, 189—1 (1985); received June 26/O ctober 26 1984 
  Published    1985 
  Keywords    Petunia hybrida, Vacuoles, Protoplasts, Anthocyanins 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0189.pdf 
 Identifier    ZNC-1985-40c-0189 
 Volume    40 
2Author    J.M F G Aerts, A. W. SchramRequires cookie*
 Title    Isolation of Vacuoles from the Upper Epidermis of Petunia Hybrida Petals ü . Vacuolar Localization of Some Hydrolases  
 Abstract    In vacuoles isolated from petal upper epiderm is o f Petunia hybrida through polybase-induced lysis o f protoplasts the vacuolar localization o f x-m annosidase and x-galactosidase was dem on­ strated. N o association was observed between the tonoplast and these hydrolases. Protoplasts from different mutant lines blocked in anthocyanin biosynthesis were treated with DEAE-dextran to release vacuoles. The differences in quality o f the obtained vacuolar preparations indicated the relation between mutant line used and successful application o f the polybase-procedure. 
  Reference    Z. Naturforsch. 40c, 196 (1985); received June 26/O ctober 26 1984 
  Published    1985 
  Keywords    Petunia hybrida, Vacuoles, Anthocyanins, Flavonoids, H ydrolases 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0196.pdf 
 Identifier    ZNC-1985-40c-0196 
 Volume    40 
3Author    Friedrich, C. Hristian, B. Aum AnnRequires cookie*
 Title    A Patch Clamp Study of Tonoplast Electrical Properties in Vacuoles Isolated from Chenopodium rubrum Suspension Cells  
 Abstract    -W ilhelm B en tru p , B ernd H offm ann , M aria G o g arten -B o ek els, Jo h a n n P ete r G ogarten The patch clamp technique has been applied to isolated vacuoles from green suspension cells of Chenopodium rubrum to record electrical parameters of the tonoplast. In a symmetrical K* solution of 46 mM, the membrane displays a near zero voltage, whereas 2 mM ATP will hyper-polarize it to 15 or 20 mV (vacuole positive). The conductance amounts to about one S-m~2. Fluctuations of the clamp current are explained by an unknown channel species having opening times of 5 — 10 ms. Together with previous work on a tonoplast vesicle preparation and unpub­ lished data on vacuoles from our laboratory, the present results indicate an electrogenic mem­ brane ATPase pumping protons from the cytoplasm to the vacuole. 
  Reference    Z. Naturforsch. 40c, 886 (1985); received October 23 1985 
  Published    1985 
  Keywords    Patch Clamp, Membrane ATPase, Tonoplast, Vacuole, Chenopodium rubrum L 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0886.pdf 
 Identifier    ZNC-1985-40c-0886 
 Volume    40