The potential of rhizobacteria to control soil-borne fungal pathogens in tomato

Year 2023, Volume: 60 Issue: 4 - Journal of Agriculture Faculty of Ege University Volume: 60 Issue: 4, 705 - 721, 05.01.2024

Mustafa Akbaba , Tuba Genc

https://doi.org/10.20289/zfdergi.1342790

Abstract

Objective: The aim is to determine the biological control potential of rhizobacteria isolated from the rhizosphere of tomato plants against soil-borne fungi that cause disease in tomato plants.
Materials and Methods: The biocontrol potentials of 10 different rhizobacteria strains against 3 different fungal pathogens (Fusarium oxysporum HMK2-6, Rhizoctonia solani HB-66, Verticillium dahliae YY-14), and their plant growth-promoting characteristics were determined in vitro. In addition, the effects of two selected strains among these strains against R. solani were determined in vivo.
Results: It has been determined that Pseudomonas chlororaphis strain T142 and Bacillus subtilis strain T139 decreased the disease severity of R. solani at rates of 19.9% and 11.9%, respectively. In addition, Bacillus subtilis strain T139 increased the root growth of tomato plants compared to negative control.
Conclusion: Rhizobacteria strains in this study showed promising results for the biological control of R. solani in tomato plants.

Keywords

Tomato, Rhizobacteria, Fusarium sp., Rhizoctonia sp., Verticillium sp.

Project Number

Yok

Domateste toprak kökenli fungal patojenlerin mücadelesinde rizobakterilerin kullanılma potansiyeli

Abstract

Amaç: Domates bitkisinde hastalığa neden olan toprak kökenli funguslara karşı, domates bitkilerinin rizosferinden izole edilen rizobakterilerin biyolojik mücadele potansiyellerinin belirlenmesidir.
Materyal ve Yöntem: 10 farklı rizobakteri izolatının bitki gelişimini teşvik etme ve 3 farklı fungal patojene (Fusarium oxysporum HMK2-6, Rhizoctonia solani HB-66, Verticillium dahliae YY-14) karşı biyokontrol potansiyelleri in vitro koşullarda belirlenmiştir. Ayrıca, aralarından seçilen iki rizobakteri izolatının R. solani’ye karşı etkisi in vivo koşullarda belirlenmiştir.
Araştırma Bulguları: Pseudomonas chlororaphis T142 strainin %19.9 ve Bacillus subtilis T139 straininin %11.9 oranında biyokontrol etki göstererek R. solani’nin hastalık şiddetini azalttığı tespit edilmiştir. Ayrıca Bacillus subtilis T139 izolatı, domates bitkilerinin kök gelişimini kontrole göre artırmıştır.
Sonuç: Çalışmada kullanılan rizobakteri izolatları domateste R. solani’nin biyolojik mücadelesi için ümit vadedici sonuçlar ortaya koymuştur.

Keywords

Domates, Rizobakteri, Fusarium sp., Rhizoctonia sp., Verticillium sp.

Supporting Institution

Yok

Project Number

Yok

Thanks

Bu çalışmada istatistiksel analizler için yardım aldığımız sayın Doç. Dr. Cem TIRINK’a teşekkür ederiz.

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