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  • 1990-1994  (2)
  • 1980-1984
  • attractant  (1)
  • p-hydroxybenzoic acid  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A potent attractant of zoospores ofAphanomyces cochlioides isolated from its host,Spinacia oleracea (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 410-414 
    Details
    ISSN: 1420-9071
    Keywords: Aphanomyces cochlioides ; Spinacia oleracea ; zoospore ; attractant ; cochliophilin A
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A highly potent attractant of zoospores ofAphanomyces cochlioides, a causal fungus of the root rot disease of spinach (Spinacia oleracea), was isolated from spinach roots, and its structure was determined by spectroscopic evidence and chemical synthesis as cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone,1). A chromosorb particle prepared by soaking in solution of1 showed a potent attracting activity toward the zoospores using concentrations of1 above 10−9 or 10−10 M.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923445
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Allelopathy of yellow fieldcress (Rorippa sylvestris): Identification and characterization of phytotoxic constituents (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 683-691 
    Details
    ISSN: 1573-1561
    Keywords: Allelopathy ; Rorippa sylvestris ; weeds ; salicylic acid ; p-hydroxybenzoic acid ; vanillic acid ; syringic acid ; hirsutin ; 4-methoxyindole-3-acetonitrile ; pyrocatechol ; root exudate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Both the neutral and acidic fractions of the acetone extract of yellow fieldcress (Kireha-inugarashi,Rorippa sylvestris Besser) inhibited lettuce seed germination. Salicylic,p-hydroxybenzoic, vanillic, and syringic acid were identified in the acidic fraction. In the neutral fraction, hirsutin (8-methylsulfinyloctyl isothiocyanate), 4-methoxyindole-3-acetonitrile, and pyrocatechol were identified. Bioassay using a root exudate recirculating system showedR. sylvestris during flowering inhibited the lettuce seedling growth. Hirsutin (13μg/plant/day) and pyrocatechol (9.3μg/plant/day) were the major compounds released into the rhizosphere. Several combinations of pyrocatechol,p-hydroxybenzoic acid, vanillic acid, and hirsutin reduced lettuce seedling growth. These compounds seemed to be allelochemicals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994606
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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