Physiological and biochemical traits of drought tolerance in Argania spinosa

Abdelghani ChakhcharLaboratoire de Biotechnologie Valorisation et Protection des Agroressources, Faculté des Sciences et Techniques Guéliz, Université Cadi Ayyad, Marrakech, MarocCorrespondence[email protected]

Said WahbiLaboratoire de Biotechnologie et Physiologie Végétale, Faculté des Sciences Semlalia, Université Cadi Ayyad, Marrakech, Maroc

Mouna LamaouiLaboratoire de Biotechnologie Valorisation et Protection des Agroressources, Faculté des Sciences et Techniques Guéliz, Université Cadi Ayyad, Marrakech, Maroc

Abderrahim FerradousCentre Régional de la Recherche Forestière Marrakech, Marrakech, Maroc

Abdelhamid El MousadikLaboratoire de Biotechnologie et Valorisation des Ressources Naturelles, Faculté des Sciences, Université Ibn Zohr, Agadir, Maroc

Saad Ibnsouda-KoraichiLaboratoire de Biotechnologie Microbienne, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, Fès, Maroc

Abdelkarim Filali-MaltoufLaboratoire de Microbiologie et Biologie Moléculaire, Faculté des Sciences, Université Mohammed V Agdal, Rabat, Maroc

Cherkaoui El ModafarLaboratoire de Biotechnologie Valorisation et Protection des Agroressources, Faculté des Sciences et Techniques Guéliz, Université Cadi Ayyad, Marrakech, Maroc

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Table 1. Three-way ANOVA results on the effects of ecotype, watering regime, time and the interaction among them for physiological traits: g_s (mmol m⁻² s⁻¹), Ψ_pd (MPa) and RWC (%); and biochemical traits: SOD (UE mg⁻¹ protein), CAT (nmol min⁻¹ mg⁻¹ protein), PPO (UE mg⁻¹ protein), POD (nmol min⁻¹ mg⁻¹ protein), H₂O₂ (nmol g⁻¹), LOX activity (nmol min⁻¹ mg⁻¹ protein) and MDA (nmol g⁻¹) in leaves of four A. spinosa ecotypes exposed to three water regimes.

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Table 2. Values of g_s (mmol m⁻² s⁻¹), Ψ_pd (MPa) and RWC (%) in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: time 0 and T8: time after 8 weeks.

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Table 3. Values of SOD (UE mg⁻¹ protein), CAT (nmol min⁻¹ mg⁻¹ protein), PPO (UE mg⁻¹ protein) and POD (nmol min⁻¹ mg⁻¹ protein) activities in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: Time 0 and T8: time after 8 weeks.

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Table 4. Endogenous H₂O₂ (nmol g⁻¹), LOX activity (nmol min⁻¹ mg⁻¹ protein) and MDA (nmol g⁻¹) in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: time 0 and T8: time after 8 weeks.

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Figure 1. 2D scatterplot showing the distribution of the four ecotypes studied according to the two DF gradients obtained by CDA for physiological and biochemical traits.

Table 5. Standardized canonical DF coefficients relative to physiological and biochemical traits according to CDA.

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Physiological and biochemical traits of drought tolerance in Argania spinosa

Table 2. Values of g_s (mmol m⁻² s⁻¹), Ψ_pd (MPa) and RWC (%) in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: time 0 and T8: time after 8 weeks.

Table 5. Standardized canonical DF coefficients relative to physiological and biochemical traits according to CDA.

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Physiological and biochemical traits of drought tolerance in Argania spinosa

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Table 2. Values of gs (mmol m−2 s−1), Ψpd (MPa) and RWC (%) in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: time 0 and T8: time after 8 weeks.

Table 5. Standardized canonical DF coefficients relative to physiological and biochemical traits according to CDA.

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Table 2. Values of g_s (mmol m⁻² s⁻¹), Ψ_pd (MPa) and RWC (%) in leaves of four A. spinosa ecotypes exposed to three water regimes (100, 50 and 25 of FC corresponding to control: C, medium stress: MS and stress severe: SS, respectively). T0: time 0 and T8: time after 8 weeks.