Efficacy of Antagonistic Fungal and Bacterial Bioagents Against Faba Bean Damping-off Disease
Year: 2018
Type: article
Abstract: Faba bean damping-off caused by Rhizoctonia solani Kühn and Fusarium solaniMart are considered the most destructive diseases. All tested pathogenic fungal isolates of F. solaniand R. solani that have been collected from various locations at nine governorates were clearly variedin their virulence onto faba bean plants (cv. Giza-429) under greenhouse conditions. F. solani El-Nubaria (Fs4) and R. solani El-Menia (R20) were the most virulent isolates. To evaluate the geneticdiversity of the most aggressive isolates of R. solani and F. solani (9 isolates for each one), wereinvestigated using random amplified polymorphic DNA (RAPD) technique. The most effectiveantagonistic bacterial and fungal isolates were identified by testing the ability of these isolates toutilize different carbon sources and amino acids using Biolog-System Technique. All tested bioagents(Trichodema hamatum-2, T. harzianum, Bacillus subtilis-1 and B. mylotquefaciens-1), culture filtrates,biocides (Bio-Arc and Bio-Zeid) and chemical fungicides (Rizolex-T, Vitavax-200 and Moncut)significantly reduced the percentages of damping-off and increased the percentage of survived plantcompared with control. The most effective treatments for reducing these diseases were obtained byapplying fungicides followed by both of active bioagents and biocides. Meanwhile, culture filtratesof bioagents were the least effective treatments. Rizolex-T and Moncut were the most effectivefungicides against F. solani and R. solani.
Institutions: Agricultural Research Center, Cairo University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W4249302679