@article{PAR00021146,
  title = {{D}issolved organic matter stimulates {N}-2 fixation and nif{H} gene expression in {T}richodesmium},
  author = {{B}enavides, {M}ar and {D}uhamel, {S}. and {V}an {W}ambeke, {F}. and {S}hoemaker, {K}. {M}. and {M}oisander, {P}. {H}. and {S}alamon, {E}. and {R}iemann, {L}. and {B}onnet, {S}ophie},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ixotrophy, the combination of heterotrophic and autotrophic nutrition modes, is emerging as the rule rather than the exception in marine photosynthetic plankton. {T}richodesmium, a prominent diazotroph ubiquitous in the (sub)tropical oceans, is generally considered to obtain energy via autotrophy. {W}hile the ability of {T}richodesmium to use dissolved organic phosphorus when deprived of inorganic phosphorus sources is well known, the extent to which this important cyanobacterium may benefit from other dissolved organic matter ({DOM}) resources is unknown. {H}ere we provide evidence of carbon-, nitrogen- and phosphorus-rich {DOM} molecules enhancing {N}, fixation rates and nif{H} gene expression in natural {T}richodesmium colonies collected at two stations in the western tropical {S}outh {P}acific. {S}ampling at a third station located in the oligotrophic {S}outh {P}acific {G}yre revealed no {T}richodesmium but showed presence of {UCYN}-{B}, although no nif{H} expression was detected. {O}ur results suggest that {T}richodesmium behaves mixotrophically in response to certain environmental conditions, providing them with metabolic plasticity and adding up to the view that mixotrophy is widespread among marine microbes.},
  keywords = {{DOM} ; mixotrophy ; western tropical {S}outh {P}acific ; diazotrophs ; {PACIFIQUE} {SUD} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{FEMS} {M}icrobiology {L}etters},
  volume = {367},
  numero = {4},
  pages = {art. fnaa034},
  ISSN = {0378-1097},
  year = {2020},
  DOI = {10.1093/femsle/fnaa034},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00021146},
}