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  • 1
    Electronic Resource
    Electronic Resource
    A new species of Pleistophora from big-eyes, Priacanthm tayenus Richardson, and P. macracanthus Cuvier and Valenciennes, from the South China Sea (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 6 (1983), S. 0 
    Details
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Abstract. Pleistophora priacanthusis sp. nov. is described from big-eyes, Priacanthus tayenus and P. macracanthus, from the South China Sea. The clinical signs, prevalence, intensity and site of infection of the infected fish, the general effect of the parasite on the host, seasonal distribution and sex differences are reported. The morphology of cysts, spores, sporonts and the characteristic features of the new species using the light microscope are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2761.1983.tb00078.x
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  • 2
    Electronic Resource
    Electronic Resource
    Sporulatim in the fungus Verticillium agaricinum: Reversal of blue light inhibition by Ultraviolet radiation (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 60 (1984), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In colonies ranging from 3- to 5-days-old, light in general stimulates conidiation in Verticillium, including V. agaricinum and several strains of V. albo-atrum. However, when growth was started by inoculating with conidial suspension spread evenly over the plate, it was found that blue light inhibited conidiation in our strain of V. egaticinum. We most light-sensitive phase was around 9 h after inoculation. A broad band blue light pulse of 10 J m−2 saturated the response. The inhibitory effect of blue light could be reversed by a subsequent ultraviolet (UV) radiation, but a further effect of blue light was lost after the UV pulse. Blue light inhibition was also prevented by IJV radiation administered before the blue light.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1984.tb06090.x
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  • 3
    Electronic Resource
    Electronic Resource
    The subcellular distribution of carotenoids in light-grown Verticillium agaricinum (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 62 (1984), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Hyphae of light-grown V. agaricinum (Link) Corda contain many lipid bodies. The hypae were disrupted and the membranes immediately pelleted by a 48 000 g spin for 30 min. The major part (90%) of the carotenoids was found in a lipid layer on top of the supernatant. Carotenoids extracted from the lipid layer in diethyl ether had an absorption maximum at 488 nm. On the basis of spectra in different organic solvents the main component was tentatively. Thin layer chromatography of extracted and saponified carotenoids revealed the presence of one major and one minor component.The 48 000 g pellet contained 80% of the NAD+-dependent malate dehydrogenase (marker for mitrochondria), 25% of the antimycin-resistant NADH-cytochrome c reductase (marker for mitochodria and endoplasmic reticulum) and 10% of the proteins and the carotenoids. The latter were different from the carotenoids in the lipid layer in that the absorption maximum was at 471 nm in diethyl ether.Further fractionation of the 48 000 g pellet showed the presence of carotenoids in both mitochondria and endoplasmic reticulum (ER) all with an absorption maximum at 471 nm. On a thin layer plate these carotenoids migrated in one band coinciding with the minor band of the lipid layer. On a continous Percoll gradient two main areas of mitochodrial activity (1.068 and 1.063 g ml−1) were clearly separated from the ER (1.059 g ml−1). The carotenoid content was about 0.6 and 0.7–1.0 μg (mg protein)−1 for mitochondria and ER, respectively, equivalent to 1–2 carotenoid molecules per 1000 lipid molecules. The possible role of these membrane-bound carotenoid molecules is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1984.tb00366.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of light and phosphate on conidiation in the fungus Verticillium agaricinum (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 59 (1983), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Verticillium agaricinum (Link) Corda, grown in a yeast extract-sucrose medium, conidiated abundantly in darkness after irradiation with near ultraviolet (290–400 nm) for 15 min or blue light (400–550 nm) for 60 min. Few conidia were formed in total darkness. Exposure to 30 min of near ultraviolet light suppressed conidiation. Conidiation was also suppressed by phosphate in excess of 10−4M irrespective of light condition. After irradiation with near ultraviolet light for more than 30 min, there was a cessation of growth and a change in colony color from yellow to reddish. The color does not appear to be due to a carotenoid because the colonies turned from red to yellow when covered with acid. At pH lower than 6.0 the pigment has an absorption maximum around 390 nm, whereas at higher pH it is around 540 nm. Thus, it appears that irradiation of V. agaricinum with near ultraviolet may cause an increase in pH, which in turn produces the change of colony color from yellow to reddish.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1983.tb00766.x
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