Effect of Bacillus endophyticus on Fusarium solani the causal agent of tomatoes root rot disease.

Authors

Kamal A M Abo-Elyousr, Mansour M El-Fawy, Esmat F Ali, Abeer S Alqurashi, Alaa Baazeem, Mohamed M Hassan, Roqayah H Kadi, Nashwa M A Sallam

Published in

Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]. Volume 57. Issue 1. Jul 19, 2026. Epub Jul 19, 2026.

Abstract

Fusarium solani root rot of tomatoes causes severe production losses, and the development of safe biological management strategies is an urgent core industry need. In this study, the research material of the endophytic bacteria Bacillus endophyticus was used, and the research work was carried out in the following sequence of tests for the core aims of managing this disease and investigating its application value: Firstly, the antagonistic activity of the strain against Fusarium solani was tested by in vitro dual culture assay, and the mycelial growth inhibition rate was up to 68.2%. The strain was also shown to possess three plant growth-promoting features, including synthesis of the auxin indole-3-acetic acid (IAA), phosphorus solubilization, and cellulase production. In this work, a greenhouse experiment was conducted to confirm the effectiveness of the target biocontrol strain in controlling the disease. The test results showed the germination rate of damaged seeds in the treatment group was 88%, far higher than the 57% of the infected control group. The disease severity in plants decreased from 59.7% in the control to 18.3%, and the total biocontrol efficiency reached 69.3%. The treatment group showed a considerable rise in the activity of defense enzymes, suggesting that this strain has great potential for use in the field. These findings evidence the ability of B. endophyticus to enhance tomato growth and control root rot, induced by F. solani, suggesting its potential as a biocontrol agent towards sustainable production of tomatoes in an environmentally safe way.

PMID:
42472415
Bibliographic data and abstract were imported from PubMed on 19 Jul 2026.

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