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  • Life and Medical Sciences  (2)
  • Solanum tuberosum L.  (2)
  • 2-n-heptyl-4-hydroxyquinoline-N-oxide  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Inhibitory effects of myxothiazol and 2-n-heptyl-4-hydroxyquinoline-N-oxide on the auxiliary electron transport pathways of Rhodobacter capsulatus (1986)
    Springer
    Archives of microbiology 146 (1986), S. 159-165 
    Details
    ISSN: 1432-072X
    Keywords: Rhodobacter capsulatus ; Nitrate reduction ; Auxiliary electron transport ; Myxothiazol ; 2-n-heptyl-4-hydroxyquinoline-N-oxide ; Ubiquinone pool
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of various electron transport inhibitors upon the rates of reduction NO 3 - , dimethyl sulphoxide (DMSO) and N2O in anaerobic suspensions of Rhodobacter capsulatus have been studied. A new method for the determination of the rates of reduction of these auxiliary oxidants in intact cells is presented, based on the proportionality observed between the concentration of oxidant and the duration of the electrochromic carotenoid bandshift. For NO 3 - and N2O good agreement was found between rates of reduction determined using electrodes and those determined by the electrochromic method. Myxothiazol and antimycin A had no effect on the rates of reduction of NO 3 - and DMSO suggesting that the cytochrome b/c 1complex is not involved in electron transport to these oxidants. 2-n-heptyl-4-hydroxyquinoline-N-oxide (HOQNO) inhibited at two sites, one within the cytochrome b/c 1complex and the other on the nitrate reducing pathay, but had no effect on electron transport to N2O or DMSO. In both intact cells and cell free extracts, HOQNO had no effect on the nitrate dependent re-oxidation of reduced methylviologen (MVH2), a direct electron donor to nitrate reductase. Our data are consistent with a branch point for the auxiliary electron transport pathways at the level of the ubiquinone pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402344
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  • 2
    Electronic Resource
    Electronic Resource
    Potato tuber sugar content during development and storage (10°C): possible predictors of storage potential and the role of sucrose in storage hexose accumulation (1990)
    Springer
    Potato research 33 (1990), S. 241-245 
    Details
    ISSN: 1871-4528
    Keywords: reducing sugars ; processing quality ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Reducing sugar and sucrose contents of potato tubers (Solanum tuberosum L.) from six cultivars were monitored both during the growing season and after a four months storage period at 10°C. Significant correlations were found between tuber sugar contents (sucrose, reducing and total) measured at harvest and the reducing sugar content after storage. Similarly, in five of the six cultivars, the sucrose loss and the corresponding reducing sugar gain during storage were significantly correlated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358452
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  • 3
    Electronic Resource
    Electronic Resource
    An investigation into the factors influencing sugar levels in UK grown potatoes (cv. Record) (1990)
    Springer
    Potato research 33 (1990), S. 235-239 
    Details
    ISSN: 1871-4528
    Keywords: processing quality ; glucose ; fructose ; sucrose ; storage ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Reducing sugar and sucrose content of potato tubers (cv. Record) grown in Tayside (northern United Kingdom (UK)) and Lincolnshire (southern UK) were monitored during the 1984 growing season and after two months storage at 10°C. Neither latitude nor agronomic factors were shown to affect sugar content. Significant correlations were found between the post storage reducing sugar content and the sugar contents measured at harvest. Regression analyses indicated that in immature tubers sucrose breakdown was responsible for reducing sugar accumulation during storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358451
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  • 4
    Electronic Resource
    Electronic Resource
    Use of a radioimmunoassay technique to measure the titer of anti-cow-zona antibodies in marmoset monkeys (1982)
    New York, NY : Wiley-Blackwell
    Gamete Research 5 (1982), S. 271-281 
    Details
    ISSN: 0148-7280
    Keywords: marmosets ; cow zonae pellucidae ; active immunization ; radioimmunoassay ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: A double antibody radioimmunoassay technique is described for the measurement of anti-zona antibodies in the peripheral plasma of marmosets actively immunized against intact cow zonae pellucidae. The method has been shown to be a reliable, repeatable indicator of antibody titer, enabling direct comparison of the response obtained between marmosets. This is the first report of a procedure describing the active immunization of a primate against zona antigens, and the first time a radioimmunoassay technique has been used to monitor profiles of anti-cow zona antibody production following active immunization. The method should prove to be a useful tool in the evaluation of zona antigens as agents for immunocontraception.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120050307
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  • 5
    Electronic Resource
    Electronic Resource
    Mechanism of sperm-binding inhibition by anti-zona antisera (1981)
    New York, NY : Wiley-Blackwell
    Gamete Research 4 (1981), S. 41-47 
    Details
    ISSN: 0148-7280
    Keywords: zona pellucida ; antibody ; sperm receptors ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Mouse zonae pellucidae contain receptors for sperm throughout their structure since spermatozoa will bind to both the inner and outer surfaces of isolated zona fragments. Antibodies raised against mechanically isolated mouse zonae pellucidae were only capable of suppressing sperm binding to the outer zona surface in association with the formation of a precipitate in this region.These results indicate that such antisera are not capable of interacting directly with the sperm receptors on the zona pellucida but rely upon the less efficient mechanism of steric hindrance to prevent sperm from gaining access to the sperm binding sites.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120040107
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