Influence of Native Arbuscular Mycorrhizal Fungi and Pseudomonas fluorescens on Tamarix Shrubs Under Different Salinity Levels - Archive ouverte HAL Accéder directement au contenu
Chapitre D'ouvrage Année : 2019

Influence of Native Arbuscular Mycorrhizal Fungi and Pseudomonas fluorescens on Tamarix Shrubs Under Different Salinity Levels

Résumé

Tamarix articulata and Tamarix gallica are salt-tolerant shrubs naturally associated with arbuscular mycorrhizal fungi (AMF). A greenhouse experiment was conducted to evaluate the mycorrhizal dependency of two Tamarix species using Rhizophagus irregularis (DAOM 197198) as arbuscular mycorrhizal inoculant. T. articulata mycorrhizal dependency reached twice the one found for T. gallica. Based on those results, a second greenhouse experiment aimed to compare the effectiveness of native AMF inoculum originating from saline soil of Algerian arid and semiarid areas, while combined or not with a native endophytic bacteria Pseudomonas fluorescens, with commercial AMF inoculum (Symbivit) on T. articulata growth under three soil salinity levels, non-saline (0.6 ds m−1), moderately saline (2.33 ds m−1), and saline soils (7.52 ds m−1). Root mycorrhizal rates were improved by the co-inoculation with native AMF and P. fluorescens and with the native inoculum more than commercial inoculum in saline and moderately saline soils. They were about four folds higher with the co-inoculum and two folds with native AMF inoculum. Improvements of shoot biomasses were about 1.4-fold higher with native AMF inoculum and co-inoculum as compared to commercial inoculum in moderately saline soil. The positive effect on plant growth of the co-inoculation in moderately saline soil was associated with enhancement of phosphorus and nitrogen contents in all soil salinity level. These findings highlight the efficiency of native co-inoculation (AMF/P. fluorescens) in improving plant growth under saline conditions and suggest potential use of native inoculum for increasing T. articulata plantation in disturbed soils.
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hal-04345968 , version 1 (14-12-2023)

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Yolande Dalpé, Karima Bencherif, Anissa Lounès - Hadj Sahraoui. Influence of Native Arbuscular Mycorrhizal Fungi and Pseudomonas fluorescens on Tamarix Shrubs Under Different Salinity Levels. Giri, Bhoopander (Dir.); Varma, Ajit (Dir.). Microorganisms in Saline Environments: Strategies and Functions, 56, Springer International Publishing, pp.265-283, 2019, Soil Biology, 978-3-030-18975-4. ⟨10.1007/978-3-030-18975-4_11⟩. ⟨hal-04345968⟩
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