Age-based study of the root-associated microbiota of two Algerian date palm cultivars | ||||
| Egyptian Journal of Botany | ||||
| Article 4, Volume 64, Issue 3, September 2024, Page 40-51 PDF (1.86 MB) | ||||
| Document Type: Regular issue (Original Article) | ||||
| DOI: 10.21608/ejbo.2024.256812.2620 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Bensaid Fatiha1; Rafik Berdja   2; Lynda Lamari 3; Noureddine Bouras 4; Bouznad Zouaoui1; Benchabane Messaoud5
| ||||
| 1Botany Department, Higher National Agricultural School, 16200, El Harrach, Algeria. | ||||
| 2Biotechnology Department, University of Blida 1, B.P : 270- road of Soumaa-Blida, Algeria. | ||||
| 3Laboratoire de Biologie des Systèmes Microbiens (LBSM), École Normale Supérieure de Kouba, Alger, Algeria. | ||||
| 4Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaïa, 47000 Ghardaïa, Algeria. | ||||
| 5Biotechnology Department, University of Blida 1, B.P : 270- road of Soumaa-Blida, Algeria. | ||||
| Abstract | ||||
| Investigating Saharan soil microbiomes via microbial community inventorying is crucial to our general understanding of the phylogenetic diversity of root-associated microbial communities and assemblages. This paper investigates the qualitative distribution of root-associated microorganisms of two date palm cultivars, one of which is resistant (Takerbucht) and the other susceptible (Aghamu) to Fusarium oxysporum f. sp. albedinis (F.o.a.) infection. Species richness comprised 314 bacterial strains belonging to four distinct taxonomical groups (Bacillus, Burkholderiales, Pseudomonas, and Coryneforms). Overall, 55, 141 and 118 isolates affiliated to 10, 12 and 13 different species were identified in control, young and old date palm rhizospheres, respectively. To better visualise the patterns of microbiome association, we combined a principal component method with a hierarchical-partitional clustering analysis, which allowed and facilitated interpretation of root assemblages by clustering comparable items together. In vitro antifungal activity showed that the isolates that had a strong antagonistic effect were the ones that predominated in the endorhizosphere of the Takerbucht cultivar. These bacteria were almost exclusively members of the genus Bacillus, especially B. subtilis, exhibiting notable antifungal activity against Fusarium oxysporum f. sp. albedinis in arid environments. | ||||
| Keywords | ||||
| Saharan oasis; date-palm; root-associated microbial communities; Correspondence Analysis (CA); Hierarchical Cluster Analysis (HCA) | ||||
|
Statistics Article View: 96 PDF Download: 115 |
||||
