TR
EN
Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.)
Abstract
This study aims to investigate the biocontrol potential of antagonistic and plant growth-promoting rhizobacteria (PGPR) isolated from plant roots and soils against the crown rot pathogen Rhizoctonia solani AG 2-2 in sugar beet (Beta vulgaris L.) tubers. A total of 219 soil samples were collected from 20 provinces to obtain putative bacterial PGPR isolates that could potentially be used as biological control agents (BCAs). A total of 752 bacterial isolates were obtained, and there in vitro antifungal activity against R. solani AG-2.2 was tested in double culture experiments. The result was that 117 PGPR bacterial isolates exhibited antibiotic properties that inhibited mycelial growth of the fungal pathogen. These isolates were also characterized for their antagonistic and plant growth-promoting properties, including phosphorus solubility, hydrogen cyanide (HCN) activity, siderophore production, ACC deaminase activity, and indole-3-acetic acid (IAA) production. The 12 best PGPR isolates were then subjected to an in vivo pot test using a weighted scoring system. The isolate Bacillus subtilis 119.2 was identified as the most effective isolate that completely inhibited the outbreak of the disease caused by R. solani AG-2.2 in sugar beet. Considering the results of the in vitro and in vivo studies, the B. subtilis 119.2 isolate showed its potential as an environmentally friendly biological control agent against R. solani in sugar beet. Overall, B. subtilis 119.2 is a PGPR isolate with potential for use as a biofertilizer or biofungicide.
Keywords
Supporting Institution
The project has been supported by the Selçuk University Faculty Member Placement Program with the project number 2019-ÖYP-011 for its execution.
Project Number
2019-ÖYP-011
References
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Details
Primary Language
English
Subjects
Plant Pathology, Phytopathology
Journal Section
Research Article
Early Pub Date
July 25, 2025
Publication Date
September 11, 2025
Submission Date
January 2, 2025
Acceptance Date
June 24, 2025
Published in Issue
Year 2025 Volume: 28 Number: 5
APA
Salman, Ö., & Boyraz, N. (2025). Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.). Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 28(5), 1241-1258. https://doi.org/10.18016/ksutarimdoga.vi.1611970
AMA
1.Salman Ö, Boyraz N. Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.). KSU J. Agric Nat. 2025;28(5):1241-1258. doi:10.18016/ksutarimdoga.vi.1611970
Chicago
Salman, Özden, and Nuh Boyraz. 2025. “Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria Against Cown Rot Disease Agent Rhizoctonia Solani AG 2-2 in Sugar Beet (Beta Vulgaris L.)”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi 28 (5): 1241-58. https://doi.org/10.18016/ksutarimdoga.vi.1611970.
EndNote
Salman Ö, Boyraz N (September 1, 2025) Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.). Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi 28 5 1241–1258.
IEEE
[1]Ö. Salman and N. Boyraz, “Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.)”, KSU J. Agric Nat., vol. 28, no. 5, pp. 1241–1258, Sept. 2025, doi: 10.18016/ksutarimdoga.vi.1611970.
ISNAD
Salman, Özden - Boyraz, Nuh. “Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria Against Cown Rot Disease Agent Rhizoctonia Solani AG 2-2 in Sugar Beet (Beta Vulgaris L.)”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi 28/5 (September 1, 2025): 1241-1258. https://doi.org/10.18016/ksutarimdoga.vi.1611970.
JAMA
1.Salman Ö, Boyraz N. Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.). KSU J. Agric Nat. 2025;28:1241–1258.
MLA
Salman, Özden, and Nuh Boyraz. “Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria Against Cown Rot Disease Agent Rhizoctonia Solani AG 2-2 in Sugar Beet (Beta Vulgaris L.)”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, vol. 28, no. 5, Sept. 2025, pp. 1241-58, doi:10.18016/ksutarimdoga.vi.1611970.
Vancouver
1.Özden Salman, Nuh Boyraz. Isolation, Identification and Determination of Biocontrol Activities of Rhizobacteria against Cown Rot Disease Agent Rhizoctonia solani AG 2-2 in Sugar Beet (Beta vulgaris L.). KSU J. Agric Nat. 2025 Sep. 1;28(5):1241-58. doi:10.18016/ksutarimdoga.vi.1611970
