Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 31 (1982), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A single-spore wheat isolate of S. nodorum was passaged once through barley and a barley isolate passaged once through wheat. Reisolations from barley leaves were designated as either ‘original-type wheat’ (OTW) and resembled the wheat isolate used for inoculations in morphology, or ‘sector-type barley’ (STB) resembling the known morphology of barley isolates. Reisolations from wheat were similarly designated either OTB or STW. Sub-cultures of STB were significantly more pathogenic to barley in a glasshouse experiment than OTW, and vice versa. Similarly STW was significantly more pathogenic to wheat than OTB, and vice versa.A single-spore wheat isolate was also passaged 0, 1, 2, 3 or 4 times through barley and a barley isolate passaged similarly through wheat. Disease assessment and yield data from a field experiment showed that the pathogenicity of the passaged wheat isolate remained largely unaltered from that of the original isolate. However, the barley isolate responded after the third wheat passage by causing significantly less disease and significantly higher yields in barley than the unpassaged isolate; conversely, on wheat, disease levels significantly increased and yield slgnficantly decreased after the second wheat passage.Data obtained are discussed in the context of cultural observations made on colony morphology during host passage sequences and possible genetic mechanisms responsible.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 12
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 19 (1970), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A method is described, using a Czapek Dox V-8 agar and continuous irradiation with near-ultraviolet light, which enables large numbers of spores of Septoria tritici and Septoria nodorum to be produced rapidly and also allows easy identification of the two pathogens by their colony morphology. Also, a simple field inoculation method is described which has proved successful both in experiments involving different inoculum concentrations and for the screening of spring and winter wheat cultivars for their reactions against both pathogens.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 13
    Electronic Resource
    Electronic Resource
    Oxford, U.K. and Cambridge, USA : Blackwell Publishers
    Plant pathology 47 (1998), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four experiments studied the effects of a clover understorey on pycnidiospore dispersal of Septoria tritici in a wheat–clover intercrop under simulated rain. Clover significantly reduced the dispersal of spores in a horizontal direction by 33% at a distance of 15 cm from a line inoculum source compared with a wheat monocrop. The clover also reduced the vertical movement of spores from infected leaves at the base of wheat plants by an average of 63% compared to the monocrop, and this suggests that the main movement of spores was from the base upwards. Splash experiments using blue colour marker showed the vertical decline of splash and the number of drops per cm2 with height caught on paper adjacent to trays of clover was described by the exponential decline model. The effect of clover in reducing vertical splash approached an asymptote as the leaf area index of the understorey increased. Simulated rain-splash increased the level of disease on the flag leaf and, in one experiment, there was a significant interaction between rain-splash and clover in reducing the number of lesions on the flag leaf. The level of disease resulting from one splash event was low, indicating that subsequent pathogen multiplication is probably required to bring about high severities of disease.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 32 (1983), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 15
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 28 (1979), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An isolate of Botrytis cinerea Pers. ex Fr. insensitive to vinclozolin, procymidone and iprodione was obtained from strawberries which had been inoculated with a benomyl-insensitive isolate of the pathogen and sprayed with iprodione. This isolate maintained its insensitivity to benomyl and also showed resistance to quintozene and dicloran. Tests on detached strawberry fruits showed that the iprodione-insensitive isolate was as virulent as a sensitive isolate. No difference was found in the amounts of the fungicides taken up by the insensitive and sensitive isolates of the fungus.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 16
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 71 (1959), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 17
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 68 (1956), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 18
    ISSN: 0014-5793
    Keywords: Calcium ; Chloride channel ; Cyclic AMP ; Leydig cell ; Luteinizing hormone ; Steroidogenesis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 19
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 146 (2002), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Background Squamous cell carcinoma (SCC) is a common skin tumour that may metastasize and lead to death. We have observed that before actinic keratoses (AK) progress to SCCs they may become tender and inflamed. In some of these, histological examination shows that they are, in fact, SCCs. Objectives To study the progression of AK to SCCs. Methods We studied skin tumours from 50 patients with either asymptomatic AK, inflamed AK or SCCs, using immunocytochemistry. The diagnosis of each tumour was confirmed by histological examination. Results Studies of differentiation using heat shock protein 27 showed a stepwise loss of differentiation as the tumours progressed from asymptomatic AK, through inflamed AK to SCCs. During the inflamed AK phase, there was a marked increase in T lymphocytes and Langerhans cells: the number of infiltrating cells diminished as progression to SCC occurred. There was an increase in immunoreactive p53 and the apoptosis inhibitor bcl-2 as tumours progressed from AK to SCCs, and a decrease in Fas and Fas ligand. Conclusions These studies have shown that progression from benign to malignant tumours may be associated with an inflammatory response, which appears to drive malignant conversion, but subsides rapidly following this conversion.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 20
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 143 (2000), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Basal cell carcinomas (BCCs) can cause considerable morbidity due to their ability to enlarge progressively and to destroy underlying tissues. However, some BCCs may undergo spontaneous regression in the absence of therapy capable of inducing antineoplastic effects. Histological criteria for this process have been described, and previous studies have suggested that it may be mediated by infiltrating activated CD4-positive T cells. Objectives The purpose of this study was to compare the expression of cytokines in actively regressing and non-regressing BCCs, to ascertain if active regression is associated with a particular cytokine profile. Methods Reverse transcriptase–polymerase chain reaction, a sensitive, quantitative technique allowing analysis of multiple cytokines from small tumour samples, was used. Results Interferon (IFN)-γ was significantly elevated in actively regressing BCCs compared with non-regressing BCCs. Furthermore, interleukin (IL)-2, tumour necrosis factor (TNF)-β and CD3δ tended to be elevated in actively regressing tumours, although not to statistically significant levels. IFN-γ, IL-2, IL-10, TNF-β, granulocyte-macrophage colony-stimulating factor and Fas ligand showed strong positive correlations with CD3δ, indicating an association between infiltrating T cells and these cytokines. Conclusions These findings support a role for T-helper 1 type cytokines in mediating spontaneous regression of BCCs.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...