@article{fdi:010086288,
  title = {{S}ymbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree {A}rgania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions},
  author = {{O}utamamat, {E}. and {E}l {M}rabet, {S}. and {D}ounas, {H}. and {B}argaz, {A}. and {D}uponnois, {R}obin and {O}uahmane, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}ater deficit or drought is the most important abiotic stress limiting plant growth performance and plant community development; this is typical in the {M}editerranean area where plants are often severely and permanently water limited. {S}uch is the case of the argan tree ({A}rgania spinosa ({L}.) {S}keels), one of the tree species most affected by desertification and global warming. {T}o advance knowledge on how this tree can withstand drought stress, inoculation with a native complex of arbuscular mycorrhizal fungi ({AMF}), composed mainly of the genus {G}lomus, was studied in connection with a set of growth and physiological parameters. {U}nder controlled conditions, inoculated and non-inoculated argan seedlings were grown for 3 months under three water regimens: 25%, 50%, and 75% relative to the field capacity of used soil substrate. {T}he results showed that the argan tree had different growth abilities to develop and withstand the various applied water limitations. {T}he {AMP} complex stimulated the growth and mineral nutrition of argan seedlings under the different imposed levels of water deficiency. {R}elative water content ({RWC}) in leaves, water potential, and stomatal conductance in argan leaves showed a general improvement in inoculated seedlings compared to non-inoculated ones. {S}oluble sugar and proline contents significantly increased in non-inoculated seedlings compared with inoculated seedlings under water-limiting conditions (25%). {S}imilarly, oxidative enzyme (catalase, peroxidase, superoxide dismutase) activity increased significantly in drought-stressed seedlings. {N}on-inoculated seedlings showed the highest accumulation of these enzymes. {M}oreover, mycorrhizal symbiosis establishment positively correlated with argan tree seedlings in terms of growth, mineral nutrition, soluble sugar and proline contents, and enzymes activities. {T}he main results from the current study suggest that {AMF} improve the ability of {A}. spinosa to tolerate drought by enhancing mineral nutrition and the transport of high levels of water by enhancing the {RWC} and water potential in leaves. {F}inally, the alleviation of the destructive effects of reactive oxygen species was modulated by enzymatic scavenging activity. {H}ence, the use of {AMP} in the technical process of argan seedlings production is highly recommended in different ecofriendly restoration strategies, with the aim of producing high quality seedlings capable of tolerating drought stress.},
  keywords = {{ZONE} {MEDITERRANEENNE} ; mycorrhizae ; drought ; plant growth ; {A}rgania spinosa},
  booktitle = {},
  journal = {{C}anadian {J}ournal of {F}orest {R}esearch},
  volume = {52},
  numero = {1},
  pages = {335--345},
  ISSN = {0045-5067},
  year = {2022},
  DOI = {10.1139/cjfr-2020-0351},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086288},
}