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You searched for: Journal name Zeitschrift für Naturforschung Remove constraint Journal name: Zeitschrift für Naturforschung Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Source 2014 v.41 no.9-10 Remove constraint Source: 2014 v.41 no.9-10
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1. The C-Glycosylflavone Pattern of Passiflora incamata L.

Author:
Hans Geiger; Kenneth R. Markham
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 949-950
ISSN:
1865-7125
Subject:
Passiflora incarnata; apigenin; forage; luteolin
Abstract:
... From the herbage of Passiflora incarnata have been isolated eight flavone-C-glycosides based on apigenin and luteolin, six of them had not been found before in that plant. The constitution of all compounds is prooven. ...
DOI:
10.1515/znc-1986-9-1023

2. Diethyldithiocarbamate, a New Photosystem I Electron Donor of Mehler-Type Hill Reactions

Author:
Brad L. Upham; Kriton K. Hatzios
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 861-866
ISSN:
1865-7125
Subject:
NADP (coenzyme); catalase; cyanides; electron transfer; electrons; hydrogen peroxide; oxygen; photosystem I; superoxide anion; superoxide dismutase
Abstract:
... Diethyldithiocarbamate (DEDTC) does not accept electrons from the photosynthetic electron transport (PET) but can donate electrons to a photosystem I (PSI) Mehler reaction in the pres­ence of the following PET inhibitors: DCMU. DBMIB, and bathophenanthroline. It cannot photoreduce PSI in the presence of cyanide, a PET inhibitor. These data indicate that the site of electron donation is after the p ...
DOI:
10.1515/znc-1986-9-1011

3. An Elicitor of the Hypersensitive Lignification Response in Wheat Leaves Isolated from the Rust Fungus Puccinia graminis f. sp. tritici I. Partial Purification and Characterization

Author:
B. Moerschbacher; K. H. Kogel; U. Noll; H. J. Reisener
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 830-838
ISSN:
0939-5075
Subject:
Puccinia graminis; Triticum aestivum; alkali treatment; chitosan; elicitors; extracellular space; galactose; gel chromatography; germ tube; glucans; glucose; glycoproteins; heat stability; hypersensitive response; leaves; lignification; molecular weight; phenylalanine ammonia-lyase; plant pathogenic fungi; rust diseases; ultrafiltration; urediniospores; wheat
Abstract:
... Several biotic and abiotic clicitors of the hypersensitive reaction in wheat leaves are described. The elicitors induce enhanced activity of phenylalanine ammonia-lyase with subsequent lignifica­tion, visible as a yellow autofluorescence. The deposited material stains positively with phloroglucinol. DEAE-dextran, epoxystearic acid and chitosan are strong elicitors, while the glucans tested have no ...
DOI:
10.1515/znc-1986-9-1006

4. An Elicitor of the Hypersensitive Lignification Response in Wheat Leaves Isolated from the Rust Fungus Puccinia graminis f. sp. tritici II. Induction of Enzymes Correlated with the Biosynthesis of Lignin

Author:
B. Moerschbacher; B. Heck; K. H. Kogel; O. Obst; H. J. Reisener
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 839-844
ISSN:
1865-7125
Subject:
Puccinia graminis; biosynthesis; cinnamyl alcohol dehydrogenase; dose response; elicitors; extracellular space; germ tube; isogenic lines; isozymes; leaves; lignification; lignin; peroxidase; phenylalanine ammonia-lyase; plant pathogenic fungi; rust diseases; wheat
Abstract:
... The genuine biotic elicitor from germ tube walls of Puccinia graminis f. sp. tritici (Pgt-elicitor) induces lignification, preceded by an increase in phenylalanine ammonia-lyase (PAL) activity, when injected into the intercellular space of primary wheat leaves. This increase in PAL activity is accompanied by an increase in other enzyme activities of the general phenylpropanoid pathway and the spec ...
DOI:
10.1515/znc-1986-9-1007

5. Identification and Biosynthesis of Glucosylated and Sulfated Flavonols in Flaveria bidentis

Author:
Luc Varin; Denis Barron; Ragai Ibrahim
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 813-819
ISSN:
1865-7125
Subject:
Flaveria bidentis; biosynthesis; buds; esters; glucosides; glucosylation; isorhamnetin; kaempferol; leaves; quercetin; seedlings; shoots; stems; sulfates
Abstract:
... 1.The flavonoid constituents of Flaveria bidentis have been identified as the 3-O-glucosides of kaempferol. 6-methoxykaempferol and 6-methoxyquercetin (patuletin), as well as six flavonol sulfate esters belonging to quercetin and isorhamnetin. The two latter glucosides are reported here for the first time in this species; whereas quercetin-3,7-disulfate, is a novel compound from nature.2.The amoun ...
DOI:
10.1515/znc-1986-9-1003

6. Metabolie Conversions of Trichothecene Mycotoxins: Biotransformation of 3-AcetyldeoxynivaIenoI into Fusarenon-X

Author:
Nigel C. P. Baldwin; Barrie W. Bycroft; Paul M. Dewick; John Gilbert
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 845-850
ISSN:
1865-7125
Subject:
15-acetyldeoxynivalenol; 3-acetyldeoxynivalenol; Fusarium; biotransformation; esterification; fusarenon-X; nivalenol
Abstract:
... The trichothecene mycotoxin 3-acetyldeoxynivalenol was transformed by cultures of the diace- toxyscirpenol producer Fusarium sp. strain C37410-90 into four compounds, identified as deoxy- nivalenol, 15-acetyldeoxynivalenol, 3,15-diacetyldeoxynivalenol and fusarenon-X. The major transformations are the result of specific esterification and de-esterification processes, but the production of fusareno ...
DOI:
10.1515/znc-1986-9-1008

7. New Flavonoids from the Exudate of Baccharis bigelovii (Asteraceae)

Author:
Francisco J. Arriaga-Giner; Eckhard Wollenweber; Dagmar Hradetzky
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 946-948
ISSN:
0939-5075
Subject:
Baccharis; aromatic acids; esterification; flavonols; leaves
Abstract:
... Four flavonoids have been identified from the leaf and stem resin produced by Baccharis bigelovii (Asteraceae) in addition to twelve previously described aglycones. A flavonol (alnusin) and a dihydroflavonol (alnustinol) with 3,5,7-trihydroxy substitution had both been reported only twice before. The novel compound 2β,5,7-trihydroxy-flavanone is remarkable for its 2β-substitution at the heterocycl ...
DOI:
10.1515/znc-1986-9-1022

8. Nucleic Acid-Binding Activities of the Intermediate Filament Subunit Proteins Desmin and Glial Fibrillary Acidic Protein

Author:
Constantin E. Vorgias; Peter Traub
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 897-909
ISSN:
1865-7125
Subject:
deoxyribonucleoproteins; desmin; polynucleotides; single-stranded DNA; transfer RNA; vimentin
Abstract:
... In analogy to experimental results previously obtained with vimentin and neurofilament triplet proteins, the intermediate filament (IF) proteins desmin and glial fibrillary acidic protein (GFAP) were also found to have high capacities to associate with nucleic acids. Employing a collection of native and heat-denatured pro-and eukaryotic DNAs, a series of naturally occurring single­ stranded (ss)RN ...
DOI:
10.1515/znc-1986-9-1016

9. Photodestruction of Endogenous Porphyrins in Relation to Cellular Inactivation of Propionibacterium acnes

Author:
Thor B. Melø; Gro Reisæter
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 867-872
ISSN:
0939-5075
Subject:
Propionibacterium acnes; cell culture; fluorescence; fluorescence emission spectroscopy; irradiation; photochemistry; protoporphyrin
Abstract:
... During growth of Propionibacterium acnes on Eagles medium protoporphyrin was accumulated inside the cells and coproporphyrin, both as a free base as metalcontaining, outside the cells. The photochemical processes in the endogenous porphyrins were studied by fluorescence spectroscopy during continuous irradiation of Propionibacterium acnes in suspension. The irradiation caused initially an increase ...
DOI:
10.1515/znc-1986-9-1012

10. Protein Phosphorylation — Dephosphorylation in the Cytosol of Pea Mesophyll Cells

Author:
Ruth Hracky; Jürgen Soll
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 856-860
ISSN:
1865-7125
Subject:
adenosine diphosphate; adenosine triphosphate; calcium; calmodulin; casein; cytosol; dephosphorylation; fractionation; histones; mesophyll; molecular weight; pH; peas; phosphates; phosphorus; polyacrylamide gel electrophoresis; protein kinases; protein phosphorylation; protoplasts; radionuclides; serine
Abstract:
... Soluble protein kinase and protein phosphatase activities were localized in the cytosol of pea mesophyll cells using protoplasts fractionation techniques. The molecular weights of the phosphorylated cytosolic proteins, as determined by polyacrylamide gel electrophoresis, were 68, 55, 46, 38, 36, 30, 22 and 12 kDa. Histone and, to a much lesser extent, casein but not phosvitin were accepted as exog ...
DOI:
10.1515/znc-1986-9-1010

11. Specific Binding of Calcium to Soluble Chromatin

Author:
Rüdiger Brust
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 917-922
ISSN:
1865-7125
Subject:
calcium; cations; chromatin; dialysis; ionic strength; liver; neutralization; rats
Abstract:
... Equilibrium dialysis studies and sedimentation experiments with soluble rat liver chromatin and radioactive ⁴⁵Ca support the hypothesis that there is a specific binding of Ca²⁺ to chromatin molecules. At low ionic strength the binding constant is about 12 1/mᴍ indicating that more than half of the negative charges of the chromatin molecules are neutralized due to the binding of Ca²⁺ at appropriate ...
DOI:
10.1515/znc-1986-9-1018

12. Substrate-Dependent Arylsulfatase Activity in the Cyanobacterium Plectonema 73110

Author:
Sonja Müller; Ahlert Schmidt
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 820-824
ISSN:
1865-7125
Subject:
Cyanobacterium (genus); EDTA (chelating agent); Plectonema; arylsulfatase; cations; chlorides; pH; sodium; sulfates; sulfites; sulfur; thiols
Abstract:
... Plectonem a, Arylsulfatase. Thiosulfate R eductase, Substrate Induction, Cyanobacteria Arylsulfatase activity of the cyanobacterium P lectonem a 73110 is detected during growth on p-nitrophenyl sulfate as only sulfur source. A 60-fold purification of the soluble arylsulfatase yields a protein with an pH-optim um around 10 and K m data for p-nitrophenyl sulfate of 9.5 × 10" 5 and for nitrocatechol ...
DOI:
10.1515/znc-1986-9-1004

13. Volatile Fragrance Compounds from the Fungus Gloeophyllum odoratum (Basidiomycotina)

Author:
Hans-Peter Hanssen; Volker Sinnwell; Wolf-Rainer Abraham
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 825-829
ISSN:
1865-7125
Subject:
Gloeophyllum; asparagine; culture media; fungi; glucose; linalool; metabolites; nuclear magnetic resonance spectroscopy; octenol; odor compounds; salts; sesquiterpenoids; spectral analysis; steam
Abstract:
... The accumulation of volatile metabolites in liquid cultures of the basidiomycete Gloeophyllum odoratum CBS 444.61 was studied after cultivation on defined synthetic liquid culture medium containing glucose (2%), asparagine (0.15%), and mineral salts. The composition of the steam volatile compounds differed distinctly from that obtained with another, previously investigated strain of this species. ...
DOI:
10.1515/znc-1986-9-1005

14. (R)MandeIonitrile and Prunasin, the Sources of Hydrogen Cyanide in All Stages of Paropsis atomaria (Coleoptera: Chysomelidae)

Author:
A. Nahrstedt; R. H. Davis
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 928-934
ISSN:
0939-5075
Subject:
Paropsis atomaria; beta-glucosidase; glucosides; hydrogen cyanide; larvae
Abstract:
... (R)Mandelonitrile and the cyanogenic glucoside prunasin have been established as the source of HCN in all stages of the Australian beetle Paropsis atomaria. Quantitative data for both compounds and all life stages are presented. The larvae contain a β-glucosidase activity capable of hydrolysing prunasin and also β-cyanoalanine synthase activity enabling the disposal of free cyanide. ...
DOI:
10.1515/znc-1986-9-1020

15. 2-Hydroxy-4-methoxy-5-methyIpyridin-N-oxid, ein Al3+ bindender Metabolit von Pseudomonas cepacia [1] / 2-Hydroxy-4-methoxy-5-methyl Pyridine N-Oxide, an Al3+ Complexing Metabolite from Pseudomonas cepacia [1]

Author:
St. Winkler; W. Ockels; H. Budzikiewicz; H. Korth; G. Pulverer
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 807-808
ISSN:
1865-7125
Subject:
Burkholderia cepacia; aluminum; metabolites; pyridines; siderophores
Abstract:
... It is shown that 2-hydroxy-4-methoxy-5-methyl pyridine N-oxide isolated from Pseudomonas cepacia which is known as a siderophore has a comparable complexing capacity for Al³⁺. ...
DOI:
10.1515/znc-1986-9-1001

16. Antiproliferative Activity of Derivatives of trans-Bis(salicylaldoximato)copper(II) in vitro. Some in vivo Properties of the Parent Compound

Author:
Hannu Elo; Paavo Lumme
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 951-955
ISSN:
1865-7125
Subject:
antagonists; antineoplastic agents; inhibitory concentration 50; ligands; neoplasm cells; pyridoxal; pyridoxine; toxicity; zinc
Abstract:
... Several derivatives and analogs of the recently reported antiproliferative and antitumor agent trans-bis(salicylaldoximato) copper(II) (CuSAO₂) have been prepared and tested for antiproliferative activity against L1210 leukemia cells in vitro. The salicylaldimine analog of CuSAO₂ had a very strong antiproliferative activity, the 2-day IC₅₀ value being lower than 3 μg/ml- The 2,3-dihydroxybenzaldox ...
DOI:
10.1515/znc-1986-9-1024

17. Biochemical Properties and Crystal Structure of Ethylmethylglyoxal Bis(guanylhydrazone) Sulfate — an Extremely Powerful Novel Inhibitor of Adenosylmethionine Decarboxylase

Author:
Hannu Elo; Ilpo Mutikainen; Leena Alhonen-Hongisto; Raija Laine; Juhani Janne; Paavo Lumme
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 851-855
ISSN:
1865-7125
Subject:
X-ray diffraction; adenosylmethionine decarboxylase; cations; crystal structure; crystals; diamine oxidase; drugs; growth retardation; mice; neoplasm cells; ornithine; sulfates
Abstract:
... Ethylmethylglyoxal bis(guanylhydrazone) (EMGBG) sulfate, an analog of the well-known antileukemic drug methylglyoxal bis(guanylhydrazone), was synthesized. It was shown to be an extremely powerful competitive inhibitor of eukaryotic S-adenosyimethionine decarboxylase, with an apparent Kᵢ value 12 nᴍ. Thus, it appears to be the most powerful known inhibitor of the enzyme, being almost an order of m ...
DOI:
10.1515/znc-1986-9-1009

18. Biosynthesis and Turnover of Cell Wall Glycoproteins during the Vegetative Cell Cycle of Chlamydomonas reinhardii

Author:
Jürgen Voigt
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 885-896
ISSN:
1865-7125
Subject:
Chlamydomonas reinhardtii; biosynthesis; cell growth; cell wall components; cell walls; culture media; cytokinesis; developmental stages; glycoproteins; methionine; proline; radionuclides; sulfur; tritium
Abstract:
... Biosynthesis and turnover of the different cell wall components have been studied during the vegetative cell cycle of Chlamydomonas reinhardii by pulse-labelling with [³H]proline and [³⁵S]methionine and by pulse-chase experiments. Two phases of biosynthesis of insoluble cell wall material could be distinguished: 1. de novo synthesis of the daughter cell walls during cytokinesis and 2. cell wall en ...
DOI:
10.1515/znc-1986-9-1015

19. Characterization of Volatile Constituents from Heterotrophic Cell Suspension Cultures of Ruta graveolens

Author:
Michael Jordan; Claus H. Rolfs; Wolfgang Barz; Ralf G. Berger; Hubert Kollmannsberger; Friedrich Drawert
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 809-812
ISSN:
1865-7125
Subject:
Ruta graveolens; acetic acid; alcohols; cell suspension culture; chemical composition; chromatography; culture media; ketones; mass spectrometry; quantitative analysis; sabinene; volatile compounds
Abstract:
... Heterotrophic cell suspension cultures of Ruta graveolens were established by reversion of photomixotrophic cultures without any change in the chemical composition of the growth medium. The heterotrophic cultures were qualitatively and quantitatively analyzed by gas- chromatography and mass spectroscopy for volatile compounds. The terpenoid hydrocarbons geijerene and pregeijerene, C₆-C₈ ketones, a ...
DOI:
10.1515/znc-1986-9-1002

20. Effect of Tumour Regression on Serum and Tissue Copper Concentration in Mice Bearing Induced Fibrosarcoma

Author:
Prabir Kishore Chakravarty; Aparesh Ghosh; Jaysree Roy Chowdhury
Source:
Zeitschrift für Naturforschung 2014 v.41 no.9-10 pp. 956-958
ISSN:
1865-7125
Subject:
antineoplastic agents; blood serum; copper; drug therapy; fibrosarcoma; liver; mice; remission
Abstract:
... Serum and tissue copper concentration was determined in mice bearing induced fibrosarcoma after successful chemotherapeutic treatment. The results showed a significant depression in copper concentration in the serum and tumour tissue after treatment with anti-cancer drugs. However, the liver copper concentration showed no significant change in treated groups of mice compared to before treatment. ...
DOI:
10.1515/znc-1986-9-1025