1Laboratory of Valorization of Vegetal Resource and Food Security in Semi-arid Areas, Southwest of Algeria, Tahri Mohamed University, B.P. 417, Bechar. Algeria
2Laboratoire de commande, analyse et optimisation des systèmes électro-énergétique. Faculty of Technology, Tahri Mohamed University, B.P. 417, Bechar, Algeria
3Instituto Universitario de Bio-Organica ‘‘Antonio Gonzalez’’, La Laguna, Tenerife, Spain
Department of Biology, Faculty of Natural Sciences and Life, University Tahri Mohamed, Bechar, Algeria
*Corresponding author's e-mail: mezamina072@gmail.com
Online published on 22 January, 2020.
Bayoud caused by Fusarium oxysporum f.sp. albedinis (Foa), is the most destructive disease of the date palm (Phoenix dactylifera L.) in Moroccoand Algeria and there is no effective control strategy. We found thatal though Foa isolates vary morphologically, Foa strains can be identified by species-specific primers. PCR analysis revealed that the strains that we isolated from infected date palm rachis were the Bayoud pathogen Foa. We used these strains to evaluate the antifungal activityof tar extracted from Acacia tortilis subsp. raddiana. The A. raddiana tar had a density of 1.15, a refraction index of 1.3850, a pH of 5.2 and a dried matter ratio of 48.75%. The A. raddiana tar effectively inhibited the growth of Foa in vitro with a minimum inhibitory concentration of 3 μg/ml.
Antifungal, Bayoud disease, Date palm
