Patterns of reproductive effort in the brown alga Ascophyllum nodosum
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چکیده
منابع مشابه
The brown alga Ascophyllum nodosum contains two different vanadium bromoperoxidases.
Haloperoxidases have been detected in a variety of organisms, including bacteria, fungi, algae, and mammals. Mammalian haloperoxidases are known to be directly involved in the oxidative destruction of microorganisms. The algal bromoperoxidases are probably involved in the biosynthesis of bromometabolites, most of which show considerable bactericidal activity. From the brown seaweed Ascophyllum ...
متن کاملBiological activities of fucose-containing polysaccharide ascophyllan isolated from the brown alga Ascophyllum nodosum.
A fucose-containing, sulfated polysaccharide ascophyllan was isolated from the brown alga Ascophyllum nodosum. Composition analysis demonstrated that ascophyllan mainly contains uronic acid, xylose, fucose, and sulfate half ester in approximately equimolecular proportions, which are evidently distinct from those of alginate and fucoidan. Ascophyllan inhibited the proliferation of U937 cells in ...
متن کاملThe Cultivable Surface Microbiota of the Brown Alga Ascophyllum nodosum is Enriched in Macroalgal-Polysaccharide-Degrading Bacteria
Bacteria degrading algal polysaccharides are key players in the global carbon cycle and in algal biomass recycling. Yet the water column, which has been studied largely by metagenomic approaches, is poor in such bacteria and their algal-polysaccharide-degrading enzymes. Even more surprisingly, the few published studies on seaweed-associated microbiomes have revealed low abundances of such bacte...
متن کاملEffect of epiphytism on reproductive and vegetative lateral formation in the brown, intertidal seaweed Ascophyllum nodosum (Phaeophyceae)
*To whom correspondence should be addressed. Email: [email protected] Communicating editor: K. Kogame. †Present address: Alfred-Wegener Institute for Polar and Marine Research, Biological Station Helgoland, Kurpromenade 201, 27489 Helgoland, Germany. Received 22 June 2005; accepted 15 May 2006. doi: 10.1111/j.1440-1835.2006.00441.x Effect of epiphytism on reproductive and vegetative l...
متن کاملAntidiabetic properties of polysaccharide- and polyphenolic-enriched fractions from the brown seaweed Ascophyllum nodosum.
We screened seaweed species from Atlantic Canada for antidiabetic activity by testing extracts for alpha-glucosidase inhibitory effect and glucose uptake stimulatory activity. An aqueous ethanolic extract of Ascophyllum nodosum was found to be active in both assays, inhibiting rat intestinal alpha-glucosidase (IC50 = 77 microg/mL) and stimulating basal glucose uptake into 3T3-L1 adipocytes duri...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1996
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps138199