@article{fdi:010057188,
  title = {{P}hosphorus acquisition from phytate depends on efficient bacterial grazing, irrespective of the mycorrhizal status of {P}inus pinaster},
  author = {{I}rshad, {U}. and {B}rauman, {A}lain and {V}illenave, {C}{\'e}cile and {P}lassard, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground and aims {P}hosphorus from phytate, although constituting the main proportion of organic soil {P}, is unavailable to plants. {D}espite the well-known effects of rhizosphere trophic relationships on {N} mineralization, no work has been done yet on {P} mineralization. {W}e hypothesized that the interactions between phytate-mineralizing bacteria, mycorrhizal fungi and bacterial grazer nematodes are able to improve plant {P} use from phytate. {M}ethods {W}e tested this hypothesis by growing {P}inus pinaster seedlings in agar containing phytate as {P} source. {T}he plants, whether or not ectomycorrhizal with the basidiomycete {H}ebeloma cylindrosporum, were grown alone or with a phytase-producing bacteria {B}acillus subtilis and two bacterial-feeder nematodes, {R}habditis sp. and {A}crobeloides sp. {T}he bacteria and the nematodes were isolated from ectomycorrhizal roots and soil from {P}. pinaster plantations. {R}esults {O}nly the grazing of bacteria by nematodes enhanced plant {P} accumulation. {A}lthough plants increased the density of phytase-producing bacteria, these bacteria alone did not improve plant {P} nutrition. {T}he seedlings, whether ectomycorrhizal or not, displayed a low capacity to use {P} from phytate. {C}onclusions {I}n this experiment, the bacteria locked up the phosphorus, which was delivered to plant only by bacterial grazers like nematodes. {O}ur results open an alternative route for better utilization of poorly available organic {P} by plants.},
  keywords = {{P}hytase ; {E}ctomycorrhiza ; {R}oot architecture ; {B}acillus subtilis ; {H}ebeloma cylindrosporum ; {R}habditidae ; {C}ephalobidae},
  booktitle = {},
  journal = {{P}lant and {S}oil},
  volume = {358},
  numero = {1-2},
  pages = {155--168},
  ISSN = {0032-079{X}},
  year = {2012},
  DOI = {10.1007/s11104-012-1161-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010057188},
}