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Variability of non-polar secondary metabolites in the red alga Portieria
Payo, D. A. ; Colo, J.; Calumpong, H.; De Clerck, O. (2011). Variability of non-polar secondary metabolites in the red alga Portieria. Mar. Drugs 9(11): 2438-2468. dx.doi.org/10.3390/md9112438
In: Marine Drugs. Molecular Diversity Preservation International (MDPI): Basel. ISSN 1660-3397, more
Peer reviewed article  

Available in Authors 

Keywords
    Portieria Zanardini, 1851 [WoRMS]; Marine
Author keywords
    Portieria; secondary metabolite; variation; cryptic species; life-history stages

Authors  Top 
  • Payo, D. A., more
  • Colo, J., more
  • Calumpong, H.
  • De Clerck, O., more

Abstract
    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.

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