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Variability of Non-Polar Secondary Metabolites in the Red Alga Portieria

Phycology Research Group, Ghent University, Krijgslaan 281, S8, 9000 Ghent, Belgium
Institute of Environmental and Marine Sciences, Silliman University, Dumaguete City 6200, Philippines
Authors to whom correspondence should be addressed.
Mar. Drugs 2011, 9(11), 2438-2468;
Received: 17 August 2011 / Revised: 1 November 2011 / Accepted: 8 November 2011 / Published: 21 November 2011
(This article belongs to the Special Issue Metabolomic Approaches to Marine Organisms)
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Possible sources of variation in non-polar secondary metabolites of Portieria hornemannii, sampled from two distinct regions in the Philippines (Batanes and Visayas), resulting from different life-history stages, presence of cryptic species, and/or spatiotemporal factors, were investigated. PCA analyses demonstrated secondary metabolite variation between, as well as within, five cryptic Batanes species. Intraspecific variation was even more pronounced in the three cryptic Visayas species, which included samples from six sites. Neither species groupings, nor spatial or temporal based patterns, were observed in the PCA analysis, however, intraspecific variation in secondary metabolites was detected between life-history stages. Male gametophytes (102 metabolites detected) were strongly discriminated from the two other stages, whilst female gametophyte (202 metabolites detected) and tetrasporophyte (106 metabolites detected) samples were partially discriminated. These results suggest that life-history driven variations, and possibly other microscale factors, may influence the variation within Portieria species. View Full-Text
Keywords: Portieria; secondary metabolite; variation; cryptic species; life-history stages Portieria; secondary metabolite; variation; cryptic species; life-history stages
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Payo, D.A.; Colo, J.; Calumpong, H.; Clerck, O. Variability of Non-Polar Secondary Metabolites in the Red Alga Portieria. Mar. Drugs 2011, 9, 2438-2468.

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