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36 results on '"Targett, Nancy M."'

11. Isolation of two polyketide synthase gene fragments from the uncultured microbial symbiont of the marine bryozoan Bugula neritina

Author

Lopanik, Nicole B., Targett, Nancy M., and Lindquist, Niels

Subjects
Microbiological synthesis -- Research, Bryozoa -- Genetic aspects, Bryozoa -- Research, Bacteriology -- Cultures and culture media, Bacteriology -- Research, Biological sciences
Abstract

Two gene fragments from B. neritina larvae that have high levels of similarity to polyketide synthase genes are isolated. A clear association of these gene fragments with the symbiont is found and no association is found with the host.

Published
2006

27. New Perspectives for Addressing Patterns of Secondary Metabolites in Marine Macroalgae.

Author

Amsler, Charles D., Pelletreau, Karen N., and Targett, Nancy M.

Abstract

Natural products can structure relationships between organisms, affect resource allocation, influence competition, mediate species distributions, and select for traits leading to the potential diversification of species (e.g. see reviews by McClintock and Baker 2001; Potin et al. 2002; Pohnert 2004; Ianora et al. 2006). Although there have been numerous efforts to determine patterns of metabolite distribution in marine ecosystems, particularly in macroalgae, these efforts have focused primarily on a macroscale: global patterns, patterns within specific habitats (e.g. the intertidal zone), and patterns correlated with changes in biotic and abiotic factors. Work in terrestrial ecosystems has led to the development of ecological models that describe trade-offs, costs, and benefits, and have been applied to marine algal systems (e.g. Cronin 2001; Jormalainen et al. 2003; Honkanen and Jormalainen 2005; Dworjanyn et al. 2006b; Ianora et al. 2006). However, the response of algal secondary metabolites to stimuli is a complex process, and these models do not consistently predict patterns of macroalgal metabolite production. [ABSTRACT FROM AUTHOR]

Published
2008
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34. PREDICTING THE EFFECTS OF BROWN ALGAL PHLOROTANNINS ON MARINE HERBIVORES IN TROPICAL AND TEMPERATE OCEANS.

Author

Targett, Nancy M. and Arnold, Thomas M.

Subjects
*BROWN algae, *POLYPHENOLS, *ANTIBACTERIAL agents
Abstract

Focuses on the chemical characteristics, functions, variability and potential cost in both temperate and tropical marine systems of phlorotannins, polyphenolic brown algal secondary metabolites that can function as herbivore deterrents, digestive inhibitors and antibacterial agents. Classes of polyphenolics; Categories of phlorotannins based on the type of structural linkages that result from the polymerization process and on the number of hydroxyl groups.

Published
1998
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35. TOXICITY OF SUBTROPICAL MARINE ALGAE USING FISH MORTALITY AND RED BLOOD CELL HEMOLYSIS FOR BIOASSAYS.

Author

Targett, Nancy M. and Mitsui, Akira

Subjects
*MARINE algae, *POISONS, *BIOLOGICAL assay, *CAULERPA
Abstract

Two bioassays (fish mortality and fish erythrocyte hemolysis) were used to survey for the presence of toxic principles in aqueous extracts of 19 species of marine macroalgae found in south Florida coastal waters. Extracts from six species (Chlorophyta -- Anadyomene stellata (Wulfen) C. Ag., Caulerpa prolifera (Forsskaål) Lamour.,. Penicillus capitatus Lamarck: Rhodophyta --Centrocer-as clavulatum (C. Ag.) Montagne, Laurencia papillosa (Forsskaål) Grev., L. poitel (Lamour.) Howe) showed lethal toxicity to the spotfin majarra. Euconistomus argenteus Baird & Girard. Extracts from three species (Chlorophyta -- A. stellata: Phacophyta -- Dictyota dichotoma (Hudson) Lamour Rhodophyta -- Wrangelia penicillata C. Ag.) lysed erythrocytes of sea bream, Archosargus rhomboidalis (L.). [ABSTRACT FROM AUTHOR]

Published
1979
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