Loading…

Implication of plant growth-promoting rhizobacteria of Bacillus spp. as biocontrol agents against wilt disease caused by Fusarium oxysporum Schlecht. in Vicia faba L

Out of seven spp. isolated from infected faba bean roots, two were selected and showed faba bean-wilt disease severity with percentages of 68% and 47% under greenhouse conditions. The showed the highest wilt disease was selected to complete the current study. Three rhizobacterial strains were isolat...

Full description

Saved in:
Bibliographic Details
Published in:Biomolecular concepts 2021-01, Vol.12 (1), p.197-214
Main Authors: El-Sersawy, Mostafa Mohamed, Hassan, Saad El-Din, El-Ghamry, Abbas A., El-Gwad, Amr Mahmoud Abd, Fouda, Amr
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Out of seven spp. isolated from infected faba bean roots, two were selected and showed faba bean-wilt disease severity with percentages of 68% and 47% under greenhouse conditions. The showed the highest wilt disease was selected to complete the current study. Three rhizobacterial strains were isolated and identified as Vb1, Vb3, and Vb6. These strains showed the highest antagonistic activity by the dual-culture method against selected with inhibition percentages of 59±0.2, 46±0.3, and 52±0.3% for Vb1, Vb3, and Vb6, respectively. These rhizobacterial strains exhibit varied activity for nitrogen-fixing and phosphate-solubilizing. Moreover, these strains showed positive results for ammonia, HCN, and siderophores production. The phytohormones production (indole-3-acetic acid, ABA, benzyl, kinten, ziaten, and GA ) and secretion of various lytic enzymes were recorded by these strains with varying degrees. Under greenhouse conditions, the rhizobacterial strains Vb1, Vb3, Vb6, and their consortium can protect faba bean from wilt caused by with percentages of 70, 60, 65, and 82%, respectively. Under field conditions, the inoculation with the rhizobacterial consortium (Vb1+Vb3+Vb6) significantly increases the growth performance of the -infected faba bean plant and recorded the highest wilt protection (83.3%).
ISSN:1868-5021
1868-5021
1868-503X
DOI:10.1515/bmc-2021-0020