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1989 (2)
1987 (1)
1979 (1)
1Author    E. Bengsch, J. Polster, M. SchwenkRequires cookie*
 Title    Effects of Simultaneous Supply of Silicon and Boron on Plant Growth and on Herbicide Toxicity  
 Abstract    An optimal supply of biodisposable silicon and boron shows a synergistic stimulation effect on plant growth. U nder these optim al growth conditions herbicides may become particularly toxic for cultural plants. Plants inhibited by herbicides show distinctly higher boron contents than that of untreated samples. 
  Reference    Z. Naturforsch. 44c, 781—786 (1989); received April 24 1989 
  Published    1989 
  Keywords    Silicon, Boron, Plant G row th, H erbicide, Spinach 
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 TEI-XML for    default:Reihe_C/44/ZNC-1989-44c-0781.pdf 
 Identifier    ZNC-1989-44c-0781 
 Volume    44 
2Author    H. K. LichtenthalerRequires cookie*
 Title    Effect of Biocides on the Development of the Photosynthetic Apparatus of Radish Seedlings Grown under Strong and Weak Light Conditions  
 Abstract    The influence of two biocides (bentazone, triadim efon) on the growth-response of radish seedlings (Raphanus sativus L.) was investigated with special em phasis on the developm ent of sun or shade-type chloroplasts. I. The fun gicid e triadim efon causes strong-light growth-response and the formation of sun-type chloroplasts as seen from the changed chlorophyll a/b ratio and the carotenoid and prenyl-quinone com position. 2. The photosystem II herbicide bentazone, in turn, induces a shade-type adaption. It prevents the strong-light induced formation of sun-type chloroplasts, but has little influence on the chloroplast com position in weak light. 
  Reference    Z. Naturforsch. 34c, 936 (1979); received June 5 1979 
  Published    1979 
  Keywords    Chloroplast Developm ent, Sun-Type Chloroplast, H erbicide, Bentazone, Chlorophylls 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0936.pdf 
 Identifier    ZNC-1979-34c-0936 
 Volume    34 
3Author    I. Struve, B. Golle, U. LüttgeRequires cookie*
 Title    Sethoxydim-Uptake by Leaf Slices of Sethoxydim Resistant and Sensitive Grasses  
 Abstract    Leaf slices o f the sethoxydim sensitive grasses Poa pratensis and Festuca ovina and the sethoxy­ dim resistant grasses Poa annua and Festuca rubra take up the herbicide at similar rates. U ptake is alm ost linear with concentration up to 2 m M , independent o f light and little affected by tem pera­ ture betw een 0 and 25 °C. U ptake is highly pH sensitive. A t pH 7.0 rates o f uptake are only about 20% o f the rates observed at pH 3.5. Tim e course o f uptake suggests a rapid equilibration o f the com partm ents taking up the herbicide within 2 h. It is suggested that sethoxydim uptake by the grass-leaf tissue is a nonspecific process involving passive lipid diffusion and lipid equilibration of the non-dissociated weak acid sethoxydim (pK a = 4 .6). 
  Reference    Z. Naturforsch. 42c, 279 (1987); received August 6/N ovem ber 24 1986 
  Published    1987 
  Keywords    Sethoxydim, H erbicide, Lipid D iffusion, Poa annua, P oa pratensis 
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 TEI-XML for    default:Reihe_C/42/ZNC-1987-42c-0279.pdf 
 Identifier    ZNC-1987-42c-0279 
 Volume    42 
4Author    G. Bärenwald, B. Schneider, H. R. SchütteRequires cookie*
 Title    Comparative Investigations on the Metabolism of the Herbicide 2-(2,4-Dichlorophenoxy)-propionic Acid in Plants and Cultured Cells of Tomato  
 Abstract    A kadem ie der W issenschaften der D D R , Institut für B iochem ie der Pflanzen, W einberg 3, H alle/ Saale. The m etabolism o f [ l -l4C ]2-(2,4-dichlorophenoxy)-propionic acid was studied in excised plants and cell suspension cultures o f tom ato. It was rapidly taken up and m etabolized by both the plants and the cultured cells. The m etabolites, isolated by extraction with aqueous acetone, separated and purified by TLC and H PLC, were identified by chem ical and spectrometric methods. C onju­ gates with carbohydrates were detected. G lucose, diglucose as the main conjugating m oiety, and triglucose were found as carbohydrate com ponents within the conjugates. Alm ost the same conjugates occurred in plants and cultured cells. 
  Reference    Z. Naturforsch. 44c, 233—236 (1989); received O ctober 24 1988/January 16 1989 
  Published    1989 
  Keywords    H erbicide, M etabolism, C onjugation, Cell Suspension Culture 
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 TEI-XML for    default:Reihe_C/44/ZNC-1989-44c-0233.pdf 
 Identifier    ZNC-1989-44c-0233 
 Volume    44