@article{fdi:010068372,
  title = {{E}ffect of inoculation by {M}oroccan rock phosphate-solubilizing rhizobia, versus phosphorus fertilization, on the growth and the phosphorus uptake {BY} {V}icia faba},
  author = {{M}aghraoui, {T}. and {B}echtaoui, {N}. and {G}aliana, {A}. and {W}ahbi, {S}. and {D}uponnois, {R}obin and {H}afidi, {M}. and {D}aoui, {K}. and {F}atemi, {Z}. {E}. and {L}ajudie, {P}hilippe de and {O}ufdou, {K}.},
  editor = {},
  language = {{ENG}},
  abstract = {{L}ow {P}hosphorus availability in soil is worldwide a frequent major constraint for crops. {R}hizobial strains, beneficial {N}-2-fixing symbiotic partners of legumes, were reported to solubilize both organic and inorganic complex phosphates. {T}hus they may play a significant role as plant growth-promoting rhizobacteria ({PGPR}) in the biofertilization of crops. {N}atural rock phosphate may play a key role in sustainable agriculture, resulting in economic and environmental benefits. {T}his work aims to evidence the capacity of rhizobial strains nodulating {V}icia faba {L}. plants in {M}arrakech-{H}aouz region ({M}orocco) to solubilize {M}oroccan rock phosphate in vitro in either agar or liquid medium and to evaluate and compare the effect of these strains on growth and phosphorus uptake by {V}. faba plants of two {M}oroccan varieties ({D}efes and {A}guadulce). {F}our rhizobial strains, contrasting for phosphate solubilization on agar medium, were further studied on liquid medium. {RHOF}147 and {RHOF}174 strains formed clear halos around colonies (1.37 cm and 1.2 respectively after 15 days); opposite {RHOF}170 and {RHOF}171 strains did not produce halo. {T}he four strains were able to mobilize rock phosphate for growth in liquid medium (up to 0.59 mg/{L} of assimilated phosphorus). {L}ower p{H} values and most mobilized phosphorus production were registered for {RHOF}147 and {RHOF}174 strains. {B}y screening the four rhizobial strains for growth on {C}hrome {A}zurol {S} ({CAS}) medium, only {RHOF}171 strain formed orange halo indicating its capacity to produce siderophores. {G}reenhouse experiments were undertaken including comparison of inoculated plants with these four rhizobial strains in the presence of rock phosphate as sole {P} source versus non-inoculated plants growing on {KH}2{PO}4 as sole {P} source ({P}-fertilized plants). {R}esults show that the root length, the root dry weight and the ratio root/shoot dry weights were generally higher in the inoculated plants than in the {P}-fertilized plants, indicating the adaptation of the inoculated plants to phosphorus deficiency conditions. {T}he effect of rock phosphate-solubilizing bacteria on plant growth depends on the symbiotic combination of the inoculated strain and the plant genotype. {A}s for phosphorus uptake, rhizobial strains made phosphorus available to the plant at significant increased concentrations in some symbiotic combinations (e.g. {A}guadulce-{RHOF}147). {T}he use of selected symbiotic combinations having the capacity to solubilize rock phosphate may improve soil fertility and phosphorus availability to plants.},
  keywords = {{M}oroccan rock phosphate ; rhizobia ; {V}icia faba ; phosphorus solubilization ; {MAROC}},
  booktitle = {},
  journal = {{P}akistan {J}ournal of {A}gricultural {S}ciences},
  volume = {53},
  numero = {4},
  pages = {817--826},
  ISSN = {0552-9034},
  year = {2016},
  DOI = {10.21162/pakjas/16.3461},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068372},
}