Spatiotemporal variations of diterpene production in the brown macroalga Bifurcaria bifurcata from the western coasts of Brittany (France)

Bifurcaria bifurcata, a temperate brown macroalga, is known to show spatial fluctuations in its diterpene content along the northwestern coasts of France (Brittany). In the aim to identify environmental factors which could influence the occurrence of a particular chemical type, several populations o...

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Bibliographic Details
Published in:Journal of applied phycology 2014-04, Vol.26 (2), p.1207-1214
Main Authors: Le Lann, Klervi, Rumin, Judith, Cérantola, Stéphane, Culioli, Gérald, Stiger-Pouvreau, Valérie
Format: Article
Language:English
Subjects:
Abiotic factors
Algae
Bifurcaria bifurcata
Biodiversity and Ecology
Biomedical and Life Sciences
chemical composition
Coasts
diterpenoids
Ecology
Environmental factors
Environmental Sciences
Freshwater & Marine Ecology
Life Sciences
macroalgae
NMR
Nuclear magnetic resonance
nuclear magnetic resonance spectroscopy
Plant Physiology
Plant Sciences
summer
Thin layer chromatography
Winter
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Summary:Bifurcaria bifurcata, a temperate brown macroalga, is known to show spatial fluctuations in its diterpene content along the northwestern coasts of France (Brittany). In the aim to identify environmental factors which could influence the occurrence of a particular chemical type, several populations of B. bifurcata were collected in summer 2009 and winter 2010. Their chemical composition was studied through thin layer chromatography (TLC) and nuclear magnetic resonance (NMR) analyses. Results showed that specific diterpenes are biosynthesized depending on seasons and abiotic factors, such as hydrodynamism or substratum. Exposed sites were characterized by thalli of B. bifurcata producing two main diterpenoids, bifurcane, and eleganediol, whereas thalli from sheltered sites showed crude extracts containing a major diterpene, eleganolone. On these last sites, another diterpene (bifurcanone) is only expressed in winter and was thus considered as a seasonal chemomarker. The term “chemotype” applied to a population is proposed and discussed.
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-013-0148-7