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Title: Effects of Arbuscular Mycorrhizal Inoculation by Indigenous Fungal Complexes on the Morpho-Physiological Behavior of Argania spinosa Subjected to Water Deficit Stress
Authors: Ouallal, Imane$Other$Other
Abbas, Younes$Other$Other
ElYacoubi, Houda$Other$Other
Imtara, Hamada$AAUP$Palestinian
N. Al Zain, Mashail $Other$Other
Ouajdi, Mohemed $Other$Other
El Goumi, Younes$Other$Other
M. Alzamel, Nurah $Other$Other
Mohammed Noman, Omar $Other$Other
Atmane, Rochdi $Other$Other
Issue Date: 26-Mar-2022
Publisher: Horticulturae
Citation: Ouallal, I.; Abbas, Y.;ElYacoubi, H.; Imtara, H.; Al Zain,M.N.; Ouajdi, M.; El Goumi, Y.;Alzamel, N.M.; Mohammed Noman,O.; Rochdi, A. Effects of ArbuscularMycorrhizal Inoculation byIndigenous Fungal Complexes on theMorpho-Physiological Behavior ofArgania spinosa Subjected to WaterDeficit Stress. Horticulturae 2022, 8,280. (PDF) Effects of Arbuscular Mycorrhizal Inoculation by Indigenous Fungal Complexes on the Morpho-Physiological Behavior of Argania spinosa Subjected to Water Deficit Stress. Available from: [accessed Apr 05 2022].
Abstract: Our objective is to test selected mycorrhizal complexes to verify the contribution of myc-orrhizal symbiosis as a biological tool promoting the development of the argan tree under hostileconditions. In addition, this study aims to assess the impact of soil drought caused by stoppingwatering of young argan plants inoculated with strains of fungal complexes indigenous to the speciesin comparison to non-inoculated plants. Under conditions of water deficit stress, the most markedreductions in fresh and dry biomass were recorded in non-mycorrhizal plants. The most negativevalues of leaf water potential Ψf and Ψb were also noted in non-mycorrhizal plants. On the otherhand, plants inoculated with mycorrhizal Bouyzakarne inoculum were relatively less affected bywatering discontinuation compared to those inoculated with mycorrhizal Argana inoculum. Waterstress caused a reduction in potassium and phosphorus content in the leaves and roots of all plants.However, mycorrhizal plants exhibited the highest P and K values compared to non-mycorrhizal ones.Therefore, mycorrhization compensates for the deficit in absorption of inorganic nutrients duringdrought. Sodium gradually decreased in the leaves but increased in the roots, and this delocalizationof Na+ ions under water deficit stress resulted in higher concentrations in the roots than in the leavesof all plants. However, the mycorrhizal plants exhibited relatively lower values of root Na+ comparedto the non-mycorrhizal controls. The water deficit reduced the content of chlorophyll a and b inthe leaves and the chlorophyll a/b ratio in stressed plants. The lowest chlorophyll values wererecorded in non-mycorrhizal plants. The levels of proline and soluble sugars in the leaves and roots ofargan plants increased in all plants, especially with the extension of the duration of stress. However,proline accumulation was higher in mycorrhizal plants, with superiority in plants inoculated with theBouyzakarne complex in comparison with that of Argana. In contrast, the accumulation of solublesugars was higher in non-mycorrhizal plants than in mycorrhizal plants. We concluded that with a correct choice of the symbiotic fungi complexes, AMF inoculation biotechnology can benefit argan cultivation, especially under stressful conditions in arid regions with structural drought, where native Arbuscular mycorrhizal fungi levels are low.
ISSN: 10.3390/horticulturae8040280
Appears in Collections:Faculty & Staff Scientific Research publications

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