Rhizosphere Bacterial Isolation from Indigenous Plants in Arid and Semi-Arid Algerian Soils: Implications for Plant Growth Enhancement
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Published:2023-10-03
Issue:10
Volume:11
Page:2907
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ISSN:2227-9717
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Container-title:Processes
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language:en
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Short-container-title:Processes
Author:
Novello Giorgia1, Bona Elisa2ORCID, Toumatia Omrane34ORCID, Vuolo Francesco5, Bouras Noureddine4, Titouah Houda4, Zitouni Abdelghani4, Gorrasi Susanna6ORCID, Massa Nadia1ORCID, Cesaro Patrizia1ORCID, Todeschini Valeria1ORCID, Lingua Guido1, Gamalero Elisa12ORCID
Affiliation:
1. Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, 15121 Alessandria, Italy 2. Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, Università del Piemonte Orientale, 13100 Vercelli, Italy 3. Laboratory for Valorisation and Bioengineering of Natural Resources, Faculty of Sciences, University of Algiers 1, Algiers 16000, Algeria 4. Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure (ENS) de Kouba, 16000 Algiers, Algeria 5. Sacco s.r.l., via Alessandro Manzoni 29a, 22071 Cadorago, Italy 6. Dipartimento di Ecologia e Biologia, Università degli Studi della Tuscia, 01100 Viterbo, Italy
Abstract
The Mediterranean area is one of the geographic zones most affected by land degradation and desertification and these conditions appear to be even more exacerbated by climate change. Based on this idea, this work aimed to isolate, identify, characterize, and select bacterial strains able to tolerate salinity and drought, which could possibly be used in agriculture as plant biofertilizers. The sampling of rhizosphere soil was performed in two Algerian regions, Ghardaïa and Djelfa (arid and semi-arid zones, respectively) in six provinces, targeting fourteen native plant species, known for their therapeutic use. A total of 288 bacterial strains were isolated, identified, and characterized for their growth at different temperatures and salt tolerance. Based on these capabilities, 95 isolates were selected. These strains underwent further evaluation for their plant-beneficial traits, including siderophore synthesis, auxin production, and phosphate solubilization. Additionally, we assessed their impact on tomato, cucumber, and sorghum seed germination. In a final screening step, nine bacterial strains were tested for their potential plant growth-promoting activity on tomato plants grown in semi-controlled conditions. Our results demonstrated that three strains (Bacillus simplex AH24, Microbacterium arborescens PU10, and Microbacterium paludicola AEA23) showed plant growth promotion activities on tomato.
Funder
Università del Piemonte Orientale
Subject
Process Chemistry and Technology,Chemical Engineering (miscellaneous),Bioengineering
Reference52 articles.
1. Assessment of the physico-chemical and biological quality of surface waters in arid and semi-arid regions of Algeria (North-Africa);Sellam;Bull. Soc. Zool. Fr.,2019 2. Diversity and bioprospecting of extremely halophilic archaea isolated from Algerian arid and semi-arid wetland ecosystems for halophilic-active hydrolytic enzymes;Menasria;Microbiol. Res.,2018 3. New analysis of the endemic vascular plants of Algeria, their diversity, distribution pattern and conservation status;Meddour;Willdenowia,2023 4. Hemmami, H., Seghir, B.B., Zeghoud, S., Ben Amor, I., Kouadri, I., Rebiai, A., Zaater, A., Messaoudi, M., Benchikha, N., and Sawicka, B. (2023). Desert endemic plants in Algeria: A review on traditional uses, phytochemistry, polyphenolic compounds and pharmacological activities. Molecules, 28. 5. Hot-Spots analysis for conservation of plant biodiversity in the Mediterranean basin;Ann. Mo. Bot. Gard.,1997
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