title: Isolation of turbinaric acid as a chemomarker of Turbinaria conoides (J. Agardh) Kützing from South Pacific Islands.
abstract: Several species of the genus Turbinaria coexist along the coasts of islands in the Indian and Pacific Oceans. Among these brown algae, Turbinaria ornata and T. conoides are sister species that are difficult to differentiate using exclusively morphological characters. Based on in vivo nuclear magnetic resonance and chromatographic techniques, i.e., liquid and gas chromatography-mass spectrometry analysis, combined with phylogenetic data, we successfully identified turbinaric acid in T. conoides samples from several Indian and Pacific Ocean islands. This nonvariable discriminant molecule was only identified in T. conoides specimens, but not in the two allied species T. ornata and T. decurrens. Results are discussed with regard to turbinaric acid as an interesting chemomarker isolated from T. conoides and the rapid discrimination of Turbinaria specimens using chemical assays.
authors.affiliation: LEMAR UMR 6539 UBO CNRS IRD, European Institute of Marine Studies (IUEM), University of Western Brittany (UBO), European University of Brittany (UEB), Technopôle Brest-Iroise, Plouzané, 29280, France.
authors.forename: Klervi
authors.initials: K
authors.lastname: Le Lann
authors.affiliation: LEMAR UMR 6539 UBO CNRS IRD, European Institute of Marine Studies (IUEM), University of Western Brittany (UBO), European University of Brittany (UEB), Technopôle Brest-Iroise, Plouzané, 29280, France.
authors.forename: Edouard
authors.initials: E
authors.lastname: Kraffe
authors.affiliation: RMN-RPE-SM, 6 avenue, Victor-Le-Gorgeu-CS93837, Brest Cedex 3, 29238, France.
authors.forename: Nelly
authors.initials: N
authors.lastname: Kervarec
authors.affiliation: RMN-RPE-SM, 6 avenue, Victor-Le-Gorgeu-CS93837, Brest Cedex 3, 29238, France.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Cerantola
authors.affiliation: UMR 7138 Systématique, Adaptation, Evolution, IRD, B.P. A5, Nouméa Cedex, 98848, Nouvelle-Calédonie.|UPF, French Polynesia.
authors.forename: Claude Elisabeth
authors.initials: CE
authors.lastname: Payri
authors.affiliation: LEMAR UMR 6539 UBO CNRS IRD, European Institute of Marine Studies (IUEM), University of Western Brittany (UBO), European University of Brittany (UEB), Technopôle Brest-Iroise, Plouzané, 29280, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Stiger-Pouvreau
keywords: Chemotaxonomy; HRMAS NMR; Pacific islands; Turbinaria conoides; Turbinaria ornata; Turbinaric Acid