@article{fdi:010069430,
  title = {{C}hemogeography of the red macroalgae {A}sparagopsis : metabolomics, bioactivity, and relation to invasiveness},
  author = {{G}reff, {S}. and {Z}ubia, {M}. and {P}ayri, {C}laude and {T}homas, {O}. {P}. and {P}erez, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}ntroduction {T}he {L}atitudinal {G}radient {H}ypothesis ({LGH}) foresees that specialized metabolites are overexpressed under low latitudes, where organisms are subjected to higher herbivory pressure. {T}he widespread macroalga {A}sparagopsis taxiformis is composed of six distinct genetic lineages, some of them being introduced in many regions. {O}bjectives {T}o study (i) metabolic fingerprints of the macroalga and (ii) its bioactivity in space and time, both as proxies of its investment in defensive traits, in order to assess links between bioactivities and metabotypes with macroalgal invasiveness. {M}ethods 289 macroalgal individuals, from four tropical and three temperate regions, were analyzed using untargeted metabolomics and the standardized {M}icrotox ({R}) assay. {R}esults {M}etabotypes showed a low divergence between tropical and temperate populations, while bioactivities were higher in temperate populations. {H}owever, these phenotypes varied significantly in time, with a higher variability in tropical regions. {B}ioactivities were high and stable in temperate regions, whereas they were low and much variable in tropical regions. {A}lthough the introduced lineage two exhibited the highest bioactivities, this lineage could also present variable proliferation fates. {C}onclusion {T}he metabolomic approach partly discriminates macroalgal populations from various geographic origins. {T}he production of chemical defenses assessed by the bioactivity assay does not match the macroalgal genetic lineage and seems more driven by the environment. {T}he higher content of chemical defenses in temperate versus tropical populations is not in accordance with the {LGH} and cannot be related to the invasiveness of the macroalgae.},
  keywords = {{A}sparagopsis taxiformis ; {M}acroalgal proliferations ; {M}etabolomics ; {T}ransoceanic comparisons ; {M}icrotox ({R}) ; {UHPLC}-{HRMS} ; {ACORES} ; {ALGERIE} ; {ESPAGNE} ; {FRANCE} ; {MEDITERRANEE} ; {GUADELOUPE} ; {MARTINIQUE} ; {MAYOTTE} ; {REUNION} ; {NOUVELLE} {CALEDONIE} ; {POLYNESIE} {FRANCAISE} ; {ATLANTIQUE} ; {PACIFIQUE} ; {OCEAN} {INDIEN} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{M}etabolomics},
  volume = {13},
  numero = {4},
  pages = {art. 33 [13 p.]},
  ISSN = {1573-3882},
  year = {2017},
  DOI = {10.1007/s11306-017-1169-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069430},
}