NDLI: Convergent Antifouling Activities of Structurally Distinct Bioactive Compounds Synthesized Within Two Sympatric Haliclona Demosponges

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Marine Biotechnology : Volume 11, Issue 1, February 2009

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Convergent Antifouling Activities of Structurally Distinct Bioactive Compounds Synthesized Within Two Sympatric Haliclona Demosponges

Content Provider	Springer Nature Link
Author	Roper, K. E. Beamish, H. Garson, M. J. Skilleter, G. A. Degnan, B. M.
Copyright Year	2008
Abstract	A wide range of sessile and sedentary marine invertebrates synthesize secondary metabolites that have potential as industrial antifoulants. These antifoulants tend to differ in structure, even between closely related species. Here, we determine if structurally divergent secondary metabolites produced within two sympatric haliclonid demosponges have similar effects on the larvae of a wide range of benthic competitors and potential fouling metazoans (ascidians, molluscs, bryozoans, polychaetes, and sponges). The sponges Haliclona sp. 628 and sp. 1031 synthesize the tetracyclic alkaloid, haliclonacyclamine A (HA), and the long chain alkyl amino alcohol, halaminol A (LA), respectively. Despite structural differences, HA and LA have identical effects on phylogenetically disparate ascidian larvae, inducing rapid larval settlement but preventing subsequent metamorphosis at precisely the same stage. HA and LA also have similar effects on sponge, polychaete, gastropod and bryozoan larvae, inhibiting both settlement and metamorphosis. Despite having identical roles in preventing fouling and colonisation, HA and LA differentially affect the physiology of cultured HeLa human cells, indicating they have different molecular targets. From these data, we infer that the secondary metabolites within marine sponges may emerge by varying evolutionary and biosynthetic trajectories that converge on specific ecological roles.
Starting Page	188
Ending Page	198
Page Count	11
File Format	PDF
ISSN	14362228
Journal	Marine Biotechnology
Volume Number	11
Issue Number	2
e-ISSN	14362236
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-08-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Allelochemicals Biofouling Invertebrate larvae Settlement ecology Engineering Zoology Microbiology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Biotechnology

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