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  • 1
    Electronic Resource
    Electronic Resource
    Ultraviolet Absorption Spectra of Derivatives of 2,3,5- and 2,4,5-Trihydroxyacetophenone1 (1955)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 77 (1955), S. 6618-6620 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01629a061
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  • 2
    Electronic Resource
    Electronic Resource
    Glutamic Acid Metabolism in Brain and Liver during Infusion with Ammonia labelled with Nitrogen-15 (1961)
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 326-326 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] 15N-ammonium acetate was infused into the carotid artery of cats over a period of 8-85 min. with simul taneous electroencephalographic and electrocardio-graphic tracings. The experiments were terminated by exsanguination of the animal, the blood was collected, brain and liver excised and frozen, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/189326a0
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  • 3
    Electronic Resource
    Electronic Resource
    Production of Pectic Enzymes by Phytophthora infestans (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 649-649 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An isolate of race 4 was grown in a range of natural and synthetic media. The basal medium contained in g/1.: potassium dihydrogen phosphate, 0-5; MgSO4.7H2O, 0-25; asparagine, 1-0; yeast extract, 5-0; thiamine, 0-001, and additions were made as shown in Table 1. The pH was adjusted to 5-5 before ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211649a0
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  • 4
    Electronic Resource
    Electronic Resource
    Production of Coumarins by Phytophthora infestans (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 1165-1166 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Coumarins from blight lesions The tissue surrounding blight lesions in potato tubers of several varieties fiuoresces strongly in ultra-violet light and at least part of this fluorescence is due to an accumulation of oxygenated coumarins and their glucosides. Scopoletin (I) and scopolin ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2101165a0
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  • 5
    Electronic Resource
    Electronic Resource
    Variation for virulence in Erysiphe fischeri from Senecio vulgaris (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 42 (1993), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Variation for virulence was investigated in two populations of Erysiphe fischeri, the cause of powdery mildew of the common annual weed Senecio vulgaris (groundsel). Infection types were recorded on detached leaf segments from 50 inbred lines of S. vulgaris following inoculation with 24 single-conidial-chain isolates of E. fischeri (12 each from two UK sites; one, at Glasgow, located about 480 km north of the other, at Wellesbourne). Mean infection types for each isolate/line combination were categorized by applying several upper limits below which combinations were considered to be incompatible. Regardless of the limit applied, numerous specific virulence and resistance phenotypes could be discriminated. Virulence phenotypes were complex and all isolates were capable of colonizing and reproducing on the majority of groundsel lines. However, all isolates were completely avirulent (no reproduction) on at least one groundsel line, so no isolate was universally virulent. Plants of several groundsel lines exhibiting different resistance phenotypes were exposed to natural infection at Wellesbourne to act as mildew traps, to examine the virulence characteristics of the pathogen population. Common components of the fungus population colonized groundsel lines exhibiting resistance to only a few or none of the single-conidial-chain isolates. Rarer components of the pathogen population colonized groundsel lines with resistance to the majority or all of the isolates previously tested. These latter components of the fungus population also detected resistance in groundsel lines previously recorded as susceptible to all isolates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1993.tb01543.x
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  • 6
    Electronic Resource
    Electronic Resource
    Resistance to Erysiphe fischeri in two populations of Senecio vulgaris (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 42 (1993), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The frequency and distribution of different specific phenotypes for resistance to Erysiphe fischeri was studied in two populations of the annual weed Senecio vulgaris (groundsel) one located in Glasgow, Scotland the other located about 480 km south at Wellesbourne, England. Progeny of individual plants from the two host populations were tested for their response to up to 10 different isolates of E. fischeri, five from each location; each isolate had a different specific virulence phenotype. Most plants in each sample were susceptible to all 10 isolates. The proportion of plants whose progeny were resistant to a particular isolate ranged from 1% to 10% with the exception of resistance to one isolate that occurred with a frequency of 37% at Wellesbourne. Overall, resistance to one or more of the 10 isolates appeared to be more common in the plant population sampled at Wellesbourne than at Glasgow. Of the total number of groundsel line/isolate combinations tested, 10% involving Wellesbourne plants and 2% involving Glasgow plants were incompatible, i.e. resistant/avirulent. Both groundsel populations tended to be dominated by one or two resistance phenotypes but they were nevertheless highly heterogeneous when less frequent resistance phenotypes were considered. This was particularly evident at Wellesbourne where 10 different resistance phenotypes were recorded amongst a total of 75 plants growing within an area of 1 m2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1993.tb01544.x
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  • 7
    Electronic Resource
    Electronic Resource
    Diversity and variation in expression of resistance to Erysiphe fischeri in Senecio vulgaris (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 42 (1993), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The reactions of 20 inbred lines of Senecio vulgaris (groundsel) to inoculation with up to 10 isolates of Erysiphe fischeri (powdery mildew) were investigated in a number of repeat experiments. There was considerable variation among isolate/plant line reaction phenotypes with examples of both isolate-specific complete resistance and isolate-specific partial resistance. Some plant lines possessed high levels of partial resistance to all isolates tested. Incubation temperature and plant age influenced the infection types of some isolate/plant line combinations. In this pathosystem, complete and partial resistance, together with age-dependent and temperature-dependent resistance, appear to have evolved to facilitate a defence strategy based on a complex mosaic of interacting factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1993.tb01545.x
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  • 8
    Electronic Resource
    Electronic Resource
    Potassium 1,3,3a,8a-tetrahydro-3a,8a-dihydroxy-2,8-dioxoindeno[1,2-d]imidazole-2-ethanesulfonate, K+.C12H11N2O7S− (1984)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 348-350 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270184004091
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation and fungitoxicity of 3,6-dichloro-and 3,6-dibromo-8-quinolinols (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 723-730 
    Details
    ISSN: 1434-4475
    Keywords: 3,6-dichloro-8-nitroquinoline ; 3,6-dibromo-8-nitroquinoline ; 8-amino-3,6-dichloroquinoline ; 8-amino-3,6-dibromoquinoline ; 3,6-dichloro-8-quinolinol ; 3,6-dibromo-8-quinolinol ; 1H NMR spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 3,6-Dichlor- und 3,6-Dibrom-8-chinoline wurden durch direkte Halogenierung von 8-Nitrochinolin mit N-Halogensuccinimid in Essigsäure oder durch Halogenierung der entsprechenden nachSkraup synthetisierten 6-Halogen-8-nitrochinoline hergestellt. Die Nitrogruppe wurde zum Amin reduziert und die Aminofunktion in 70% iger Schwefelsäure bei 220°C zum Phenol hydrolysiert. Die Fungitoxizität der 3,6-Dichlor- und 3,6-Dibrom-8-chinoline und jene der bei ihrer Herstellung auftretenden Zwischenstufen gegenAspergillus niger, Aspergillus oryzae, Myrothecium verrucaria, Trichoderma viride undMucor cirinelloides wurde bestimmt. 3,6-Dichlor-8-chinolin ist der derzeit stärkste bekannte fungitoxische Vertreter dieser Substanzklasse.
    Notes: Summary 3,6-Dichloro- and 3,6-dibromo-8-quinolinols were prepared by direct halogenation of 8-nitroquinoline by N-halosuccinimide in acetic acid or by halogenation of the corresponding 6-halo-8-nitroquinoline prepared via aSkraup reaction. The nitro group was reduced to amino and the amine was hydrolyzed to the phenol in 70% sulfuric acid at 220°C. The fungitoxicity of 3,6-dichloro- and 3,6-dibromo-8-quinolinols, as well as intermediates in their preparation, againstAspergillus niger, Aspergillus oryzae, Myrothecium verrucaria, Trichoderma viride, andMucor cirinelloides was determined. 3,6-dichloro-8-quinolinol is the most fungitoxic analogue of this class of compounds observed to date.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277632
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  • 10
    Electronic Resource
    Electronic Resource
    Reexamination of the thermolytic rearrangement of 4-halophenyl azides to 2-aminophenols and other products (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 367-379 
    Details
    ISSN: 1434-4475
    Keywords: Acetylated-2-amino-5-halophenols ; 2-Acetamido-5-haloanisoles ; 6-Halo-2-methylbenzoxazoles ; 6-Halobenzoxazolones ; 6-Halotriacetylaminophenols ; 1H-NMR spectra ; Fungicidal activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde die Halogenierung von 2-Aminophenol-Derivaten mit N-Chlor- und N-Bromsuccinimid bei Raumtemperatur in Essigsäure untersucht. Mit den zur Verfügung stehenden Verbindungen konnte eine Neuuntersuchung der thermolytischen Umlagerung von 4-Halogenphenylaziden zu 2-Aminophenolen und anderen Produkten unternommen werden. Diese Umlagerung findet sicherlich statt, allerdings differieren die dabei beobachteten Produkte signifikant von denen, die Suschitzky et al. 1963 und 1966 beschrieben.
    Notes: Summary The halogenation of derivatives of 2-aminophenol with N-chloro- and N-bromosuccinimides at ambient temperatures in acetic acid was studied. With the necessary compounds available, a reexamination of the thermolytic rearrangement of 2-halophenyl azides to 2-aminophenols and other products was undertaken. It is certain that the rearrangement of 4-halophenyl azides to 2-aminophenols occurs but the products identified in this study differ significantly from those reported previously by Suschitzky et al. (1963, 1966).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00814133
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