Huyen T. N. Pham , Hanh T. M. Nguyen , Nhu T. N. Tran , Mai N. Pham , Dat M. Phan , Dam T. Le , Hue T. T. Vo , & Phong V. Nguyen *

* Correspondence: Nguyen Vu Phong (email: nvphong@hcmuaf.edu.vn)

Main Article Content

Abstract

Root rot disease in tomatoes caused by Fusarium solani is one of the most serious diseases and causes severe problems in all tomato growing regions. Pseudomonas is a genus of bacteria capable of synthesizing valuable active compounds, promoting plant growth, and controlling disease-causing fungi. This study aimed to evaluate the plant growth- promoting potential of selected bacterial strains from the Pseudomonas genus and their ability to prevent the occurrence of Fusarium solani, the fungus responsible for tomato root rot disease. In vitro experiments were conducted to assess the characteristics and effects related to plant growth promoting of the tested Pseudomonas strains. The antagonistic capability of the bacteria against the fungi was also evaluated by measuring mycelial growth inhibition. Greenhouse conditions were used to evaluate the effectiveness of Pseudomonas as a soil treatment for plant growth promoting and reducing the severity of tomato root rot disease. The results demonstrated a positive influence of Pseudomonas spp. on the growth and development of tomato plants, with Pseudomonas spp. PN05 exhibited the most significant impact. Moreover, both strains Pseudomonas spp. PN02 and PN05 exhibited inhibitory effects on F. solani in vitro and under greenhouse conditions, limiting root rot disease in tomato plants with a control efficiency ranging from 48.3 to 62.2%.

Keywords: Disease control, Fusarium solani, Plant growth promotion, Pseudomonas, Root rot disease

Article Details

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