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1991 (3)
1981 (1)
1Author    Boris JanistynRequires cookie*
 Title    Gaschromatographic, Mass-and Infrared-Spectrometric Identification of Cyclic Adenosine-3': 5'-monophosphate (c-AMP) in Maize Seedlings (Zea mays)  
 Abstract    Gaschromatographic, mass-and infrared-spectrometric evidence is presented for the iden­ tification of adenosine-3':5'-monophosphate (c-AMP) in maize seedlings (Zea mays). The genuine c-AMP content could be quantitated by GC-detection and refere to authentic c-AMP standards. 
  Reference    Z. Naturforsch. 36c, 193—196 (1981); received November 111980 
  Published    1981 
  Keywords    Maize, c-AMP, Gaschromatography, Mass Spectrometry, Infrared Spectrometry 
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 TEI-XML for    default:Reihe_C/36/ZNC-1981-36c-0193.pdf 
 Identifier    ZNC-1981-36c-0193 
 Volume    36 
2Author    Istvan Cs, BartaRequires cookie*
 Title    Effects of EPTC and Dichlormid on Membrane Lipid Composition of Maize Leaves and Roots  
 Abstract    The changes in fatty acid composition o f maize leaf lipids caused by EPTC were generally similar to known effects o f this herbicide in other plants: decreasing o f linolenic acid content and increasing o f its precursors, palmitic, stearic, oleic and linoleic acids. However, novel effects were detected in roots where the proportion o f minor fatty acid palm itoleic acid was increased from 2.1 to 7.6 and 16.6% by EPTC and EPTC + dichlormid treatments, respective­ ly. Simultaneously, the phospholipid content o f root lipids was increased by both EPTC as well as EPTC + dichlormid treatments. The possible effects o f EPTC and dichlormid on lipid biosynthesis o f maize are discussed. 
  Reference    Z. Naturforsch. 46c, 926 (1991); received March 26 1991 
  Published    1991 
  Keywords    EPTC, Dichlorm id, Membrane Lipids, Fatty Acids, Maize 
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 TEI-XML for    default:Reihe_C/46/ZNC-1991-46c-0926.pdf 
 Identifier    ZNC-1991-46c-0926 
 Volume    46 
3Author    DaleL. ShanerRequires cookie*
 Title    Mode of Action of Naphthalic Acid as a Safener for Imazethapyr  
 Abstract    The tolerance of maize to root-applied imazethapyr can be increased by pretreating plants with the potassium salt of naphthalic acid (NAK). This safening effect appears to be the result o f N A K stimulating the ability of maize to rapidly metabolize imazethapyr to 5'-hydroxy-ethyl-imazethapyr, possibly through a mixed function oxidase. The safening effect of N AK can be antagonized by 1-aminobenzotriazole (ABT), a mixed function oxidase inhibitor. The increased rate of hydroxylation of imazethapyr to 5'-hydroxyethyl-imazethapyr immobilizes the herbicide in the root system which decreases the accum ulation of herbicide in the meriste-matic tissue. This decreased accumulation, in turn, lowers the phytotoxicity of imazethapyr on maize. 
  Reference    Z. Naturforsch. 46c, 893—896 (1991); received M arch 26 1991 
  Published    1991 
  Keywords    Maize, Imidazolinone, Safeners, Naphthalic Acid, Naphthalic Anhydride, M etabolism 
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 TEI-XML for    default:Reihe_C/46/ZNC-1991-46c-0893.pdf 
 Identifier    ZNC-1991-46c-0893 
 Volume    46 
4Author    JohnV. Dean, JohnW. Gronw, MichaelP. AndersonRequires cookie*
 Title    Glutathione S-Transferase Activity in Nontreated and CGA-154281- Treated Maize Shoots  
 Abstract    Fast protein liquid chromatography (anion exchange) was used to separate glutathione S-transferase isozymes in nontreated etiolated maize shoots and those treated with the herbi­ cide safener C G A -154281 4-(dichloroacetyl)-3,4-dihydro-3-methyl-2 H-l ,4-benzoxazine. Non­ treated shoots contained isozymes active with the following substrates: fra/?s-cinnamic acid (1 isozyme), atrazine (3 isozymes), l-chloro-2,4-dinitrobenzene (1 isozyme), metolachlor (2 isozymes) and the sulfoxide derivative of S-ethyl dipropylcarbamothioate (2 isozymes). Pre­ treatment of shoots with the safener C G A -154281 (1 (aM) had no effect on the activity of the isozymes selective for rratts-cinnamic acid and atrazine but increased the activity of the consti-tutively-expressed isozymes that exhibit activity with l-chloro-2,4-dinitrobenzene, metola­ chlor and the sulfoxide derivative of S-ethyl dipropylcarbamothioate. The safener pretreat­ ment also caused the appearance o f one new isozyme active with l-chloro-2,4-dinitrobenzene and one new isozyme active with metolachlor. The results illustrate the complexity of gluta­ thione S-transferase activity in etiolated maize shoots, and the selective enhancement of gluta­ thione S-transferase isozymes by the safener CG A -154281. 
  Reference    Z. Naturforsch. 46c, 850—855 (1991); received March 26 1991 
  Published    1991 
  Keywords    CG A-154281, Safener, Glutathione S-Transferase, Glutathione, Maize 
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 TEI-XML for    default:Reihe_C/46/ZNC-1991-46c-0850.pdf 
 Identifier    ZNC-1991-46c-0850 
 Volume    46