@article{fdi:010079791,
  title = {{F}unctional diversity of microboring {O}streobium algae isolated from corals},
  author = {{M}ass{\'e}, {A}. and {T}ribollet, {A}line and {M}eziane, {T}. and {B}ourguet-{K}ondracki, {M}. {L}. and {Y}epremian, {C}. and {S}eve, {C}. and {T}hiney, {N}. and {L}ongeon, {A}. and {C}out{\'e}, {A}. and {D}omart-{C}oulon, {I}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he filamentous chlorophyte{O}streobiumsp. dominates shallow marine carbonate microboring communities, and is one of the major agents of reef bioerosion. {W}hile its large genetic diversity has emerged, its physiology remains little known, with unexplored relationship between genotypes and phenotypes (endolithicversusfree-living growth forms). {H}ere, we isolated nine strains affiliated to two lineages of{O}streobium(>8% sequence divergence of the plastid generbc{L}), one of which was assigned to the family {O}doaceae, from the fast-growing coral host{P}ocillopora acuta{L}amarck 1816. {F}ree-living isolates maintained their bioerosive potential, colonizing pre-bleached coral carbonate skeletons. {W}e compared phenotypes, highlighting shifts in pigment and fatty acid compositions, carbon to nitrogen ratios and stable isotope compositions (delta {C}-13 and delta {N}-15). {O}ur data show a pattern of higher chlorophyllband lower arachidonic acid (20:4 omega 6) content in endolithicversusfree-living{O}streobium. {P}hotosynthetic carbon fixation and nitrate uptake, quantified via 8 h pulse-labeling with(13){C}-bicarbonate and(15){N}-nitrate, showed lower isotopic enrichment in endolithic compared to free-living filaments. {O}ur results highlight the functional plasticity of{O}streobiumphenotypes. {T}he isotope tracer approach opens the way to further study the biogeochemical cycling and trophic ecology of these cryptic algae at coral holobiont and reef scales.},
  keywords = {{FRANCE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{E}nvironmental {M}icrobiology},
  volume = {22},
  numero = {11},
  pages = {4825--4846},
  ISSN = {1462-2912},
  year = {2020},
  DOI = {10.1111/1462-2920.15256},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079791},
}