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'Herbicides' in keywords Facet   section ZfN Section C:Volume 032  [X]
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1977 (1)
1Author    H. K. Lichtenthaler, H. K. KleudgenRequires cookie*
 Title    Effect of the Herbicide San 6706 on Biosynthesis of Photosynthetic Pigments and Prenylquinones in Raphanus and in Hordeum Seedlings  
 Abstract    The pyridazinone herbicide San 6706 blocks chlorophyll and carotenoid formation simultaneously in a correlated way in both Raphanus and Hordeum seedlings. With decreasing carotenoid content the carotenoid precursor phytoene appears in San 6706-treated plants. The accumulation of the chloroplast prenylquinones (plastoquinone-9, a-tocopherol, <x-toco-quinone and vitamin Kj) is much less affected. This indicates that the biosynthesis of C20-and C45-prenyl chains (geranyl-geraniol, phytol and solanesol) which are incorporated in prenylquinones is not blocked by San 6706. It is assumed that the block of chlorophyll and carotenoid formation is due to one basic inhibi­ tion mechanism. The possibility that San 6706 may interfere with chloroplast ribosome formation, is discussed. 
  Reference    (Z. Naturforsch. 32c, 236 [1977]; received December 13 1976) 
  Published    1977 
  Keywords    Herbicide, Pyridazinone, Prenyl Biosynthesis, Carotenoids, Prenylquinones 
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 TEI-XML for    default:Reihe_C/32/ZNC-1977-32c-0236.pdf 
 Identifier    ZNC-1977-32c-0236 
 Volume    32