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  • 1
    Electronic Resource
    Electronic Resource
    Inhibitory effect of bacterial ubiquinones on the settling of barnacle,Balanus amphitrite (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 153-155 
    Details
    ISSN: 1420-9071
    Keywords: Settlement inhibitor ; barnacle ; ubiquinone ; sponge ; Halichondria okadai ; sponge associated bacteria ; Alteromonas sp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In an attempt to clarify the influence of marine bacteria on the settling of fouling invertebrate larvae, we screened for inhibitors, produced by marine bacteria, of settling by cyprids of the barnacle,Balamus amphitrite. We found that the culture broth ofAlteromonas sp. strain number KK10304, which was associated with the marine sponge,Halichondria okadai, effectively inhibited settling of the cyprids. Bioassay-guided isolation indicated ubiquinone-8 (1) as an effective inhibitor of cyprid settling. As ubiquinones are widely distributed in bacteria, several related compounds were also tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01929360
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  • 2
    Electronic Resource
    Electronic Resource
    Okadaxanthin, a novel C50-carotenoid from a bacterium,Pseudomonas sp. KK10206C associated with marine sponge,Halichondria okadai (1994)
    Springer
    Cellular and molecular life sciences 50 (1994), S. 684-686 
    Details
    ISSN: 1420-9071
    Keywords: Carotenoid ; marine sponge ; Halichondria okadai ; sponge associated bacteria ; Pseudomonas sp. ; okadaxanthin ; singlet oxygen quencher
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract To study the origins of biologically active substances in marine sponges, a carotenoid produced by a marine bacterium,Pseudomonas sp. strain number KK10206C, which was associated with a marine sponge,Halichondra okadai, was investigated. A visible absorption spectrum-guided isolation procedure led to the isolation of a novel C50-carotenoid, okadaxanthin. Its structure, 2,2′-bis(4-hydroxy-2-methyl-2-butenyl)-ε,ε-carotene, was elucidated mainly by spectroscopic methods. Okadaxanthin turned out to be a potent singlet oxygen quencher, approximately 10 times as strong as α-tocopherol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952874
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