@article{PAR00010726,
  title = {{P}hotochemical production and behavior of hydroperoxyacids in heterotrophic bacteria attached to senescent phytoplanktonic cells},
  author = {{P}etit, {M}. and {S}emp{\'e}r{\'e}, {R}ichard and {V}aultier, {F}. and {R}ontani, {J}. {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he photooxidation of cellular monounsaturated fatty acids was investigated in senescent phytoplanktonic cells ({E}miliania huxleyi) and in their attached bacteria under laboratory controlled conditions. {O}ur results indicated that {UV}-visible irradiation of phytodetritus induced the photooxidation of oleic (produced by phytoplankton and bacteria) and cis-vaccenic (specifically produced by bacteria) acids. {T}hese experiments confirmed the involvement of a substantial singlet oxygen transfer from senescent phytoplanktonic cells to attached bacteria, and revealed a significant correlation between the concentration of chlorophyll, a photosensitizer, in the phytodetritus and the photodegradation state of bacteria. {H}ydroperoxyacids (fatty acid photoproducts) appeared to be quickly degraded to ketoacids and hydroxyacids in bacteria and in phytoplanktonic cells. {T}his degradation involves homolytic cleavage (most likely induced by {UV} and/or transition metal ions) and peroxygenase activity (yielding epoxy acids).},
  keywords = {phytoplankton ; photodegradation ; attached heterotrophic bacteria ; cis-vaccenic acid ; singlet oxygen transfer},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {M}olecular {S}ciences},
  volume = {14},
  numero = {6},
  pages = {11795--11815},
  ISSN = {1422-0067},
  year = {2013},
  DOI = {10.3390/ijms140611795},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00010726},
}