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1981 (1)
1979 (2)
1Author    ChandraK. Kokate, SamirS. RadwanRequires cookie*
 Title    Enrichment of Solanum khasianum Callus Ge­ nerating Rootlets with Steroidal Glycoalkaloids  
 Abstract    Undifferentiated callus cultures o f Solanum khasianum contain only traces o f steroidal glycoalkaloids, whereas cul­ tures which have just started to generate rootlets contain these com pounds at a level o f up to 5.2% o f the dry weight. Only 0.34% steroidal glycoalkaloids occur in the seeds; they consist predom inantly o f solasonine and solanidine as well as traces o f an unidentified com pound. Conversely, steroi­ dal glycoalkaloids from tissue cultures starting organogene­ sis contain the unidentified com pound as a major fraction, in addition to small am ounts o f solasonine and solanidine. 
  Reference    Z. Naturforsch. 34c, 634—636 (1979); received February 19/ April 12 1979 
  Published    1979 
  Keywords    Solanum khasianum, Callus Cultures, Organogenesis, Ste­ roidal G lycoalkaloids 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0634_n.pdf 
 Identifier    ZNC-1979-34c-0634_n 
 Volume    34 
2Author    Jonathan GresselRequires cookie*
 Title    A Review of the Place of in vitro Cell Culture Systems in Studies of Action, Metabolism and Resistance of Biocides Affecting Photosynthesis  
 Abstract    The hom ogeneity, density and axenic nature of cell culture system s have made them an am e­ nable tool for studying many aspects of biocide research; screening, m etabolism , m ode of action and resistance. Cell cultures are "m ulti-hom ogeneous" and each hom ogeneous state may be analog­ ous to different plant parts. Cultures can be hom ogeneously green, hom ogeneously w hite in either a hom ogeneously exponential or stationary phase of growth. Exam ples are be presented showing why no sin gle hom ogeneous state should be envisaged to be analogous to a whole plant in biocide studies. Because of the possibility of more uniform herbicide application, culture systems have a use in isolatin g resistant crop strains, at higher selection pressures and much higher "p lan t" densities than is possib le in the field, with recent successes. Protoplast fusion techniques may allow the transfer of gen etic resistance between related but genetically incom patible crop species. 
  Reference    Z. Naturforsch. 34c, 905—913 (1979); received M ay 24 1979 
  Published    1979 
  Keywords    Callus Cultures, Suspension Cultures, H erbicide Action, H erbicide M etabolism, H erbicide R esistance 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0905.pdf 
 Identifier    ZNC-1979-34c-0905 
 Volume    34 
3Author    Hamako Obata-Sasamoto, Atsushi Komamine, Koshi SaitoRequires cookie*
 Title    Biosynthesis of 3-Carboxy-6,7-dihydroxy-l, 2,3,4-tetra- hydroisoquinoline and l-Methyl-3-carboxy-6,7-dihydroxy-l, 2,3,4- tetrahydroisoquinoline in a Callus Culture of Stizolobium hassjoo  
 Abstract    dl-[/?-14C] 3,4-Dihydroxyphenylalanine (DOPA), [2-14C]pyruvate and [2-14C]acetate were ad­ ministered to a callus culture o f S. hassjoo and incorporation of the radioactivity into 3-carboxy-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (I) and l-methyl-3-carboxy-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (II) was examined. Incorporation of radioactivity from labelled DOPA into I and II, and from acetate into I were observed, while that from pyruvate into I and II and from acetate into II were hardly detected. The biosynthetic pathways o f I and D were discussed. 
  Reference    Z. Naturforsch. 36c, 921 (1981); received August 21 1981 
  Published    1981 
  Keywords    Stizolobium hassjoo, Biosynthesis, 3-Carboxy-6, 7-dihydroxy-1, 2, 3, 4-tetrahydroisoquinoline, 1 -Methyl-3-carboxy-6, 7-dihydroxy-1, 2, 3, 4-tetrahydroisoquinoline, Callus Culture 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0921.pdf 
 Identifier    ZNC-1981-36c-0921 
 Volume    36