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KMID : 0545120210310101373
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Journal of Microbiology and Biotechnology
2021 Volume.31 No. 10 p.1373 ~ p.1382
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Evaluation of Bacillus velezensis for Biological Control of Rhizoctonia solani in Bean by Alginate/Gelatin Encapsulation Supplemented with Nanoparticles
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Moradi-Pour Mojde
Saberi-Riseh Roohallah
Esmaeilzadeh-Salestani Keyvan
Mohammadinejad Reza
Loit Evelin
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Abstract
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Plant growth promoting rhizobacteria (PGPR) are a group of bacteria that can increase plant growth; but due to unfavorable environmental conditions, PGPR are biologically unstable and their survival rates in soil are limited. Therefore, the suitable application of PGPR as a plant growth stimulation is one of the significant challenges in agriculture. This study presents an intelligent formulation based on Bacillus velezensis VRU1 encapsulation enriched with nanoparticles that was able to control Rhizoctonia solani on the bean. The spherical structure of the capsule was observed based on the Scanning Electron Microscope image. Results indicated that with increasing gelatin concentration, the swelling ratio and moisture content were increased; and since the highest encapsulation efficiency and bacterial release were observed at a gelatin concentration of 1.5%, this concentration was considered in mixture with alginate for encapsulation. The application of this formulation which is based on encapsulation and nanotechnology appears to be a promising technique to deliver PGPR in soil and is more effective for plants.
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KEYWORD
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Alginate/Gelatin, biological control, encapsulation, carbon nano tube, microbiology, PGPR
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