@article{fdi:010061730, title = {{N}itrogen and phosphorus flow stimulated by bacterial grazer nematodes in mycorrhizosphere of {P}inus pinaster}, author = {{I}rshad, {U}. and {V}illenave, {C}{\'e}cile and {B}rauman, {A}lain and {K}han, {S}. {A}. and {S}hafiq, {S}. and {P}lassard, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he microbial loop based on the grazing of bacteria by bacterial-feeding nematodes is thought to play a major role in the mineralization of nutrients such as nitrogen ({N}) and phosphorus ({P}) in terrestrial ecosystems. {T}his study was undertaken to quantify the effect of bacterial grazing nematodes on root architecture, growth and mineral nutrition ({N} and {P}) in the mycorrhizosphere of woody species ({P}inus pinaster). {T}hirty five days simplified sterile experiment was conducted with young mycorrhizal {P}. pinaster seedlings (inoculated with {H}ebeloma cylindrosporum) along with bacteria ({B}acillus subtilis) and bacterivorous nematodes ({R}habditis sp.). {T}o know better the role of microbial complexity on {N} nutrition, two {N} sources, bacterial {N} labeled with {N}-15 and nitrate were supplied in the medium. {P}hosphorus was supplied as insoluble inorganic tri-calcium phosphate ({TCP}). {T}he results showed that the {N}-15 flow (4 mu g plant(-1)) from the bacteria to the plant shoots was only significant when nematodes were present. {P}lants cultivated with bacteria or nematodes also accumulated higher total {N} and {P} in their shoots than mycorrihzal ones. {T}hese results revealed that the presence of bacterial-feeding nematodes significantly enhanced {N} and {P} availability to mycorrihzal {P}. pinaster seedlings, probably by improving plant use of nitrate and insoluble {P} supplied in the medium.}, keywords = {{M}ycorrhizosphere ; {B}acterial grazers ; {I}sotopic {N}-15 ; {N}utrient flow ; {P}lant growth}, booktitle = {}, journal = {{I}nternational {J}ournal of {A}griculture and {B}iology}, volume = {15}, numero = {6}, pages = {1265--1271}, ISSN = {1560-8530}, year = {2013}, URL = {https://www.documentation.ird.fr/hor/fdi:010061730}, }