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Journals / Türkiye Tarımsal Araştırmalar Dergisi / 2026 / Cilt: 13 Sayı: 2

Investigation of the Effectiveness of Clonostachys rosea (Sch.) Schroers & Samuels on Root Rot Caused by Fusarium solani (March.) Sacc. in Pistachio (Pistacia vera L.)

Metin Yildirim(Siirt University, Graduate School of Natural and Applied Sciences, Department of Plant Protection, Siirt, TÜRKİYE)0000-0003-3943-8379
Mehmet Hadi Aydın(Siirt University, Faculty of Agriculture, Department of Plant Protection, Siirt, TÜRKİYE)0000-0003-3135-4621
Pages
122–130
Publication Date
2026-07-14
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

According to the results of the experiment evaluating the antagonistic activity of volatile metabolites produced by C. rosea isolates, F10 was the most effective, inhibiting the pathogen by 9.04%.

📌 3 Key Takeaways

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Objective & Hypothesis:This study was conducted in the Phytopathology Laboratory and controlled-environment growth chamber of Siirt University during 2022-2023 to evaluate the efficacy of Clonostachys rosea against root rot caused by Fusarium solani in pistachio (Pistacia vera L.).
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Key Findings & Data:The study material included F. solani KY1, previously isolated from pistachio roots and identified as pathogenic, along with C. rosea isolates F8, F9, and F10, also obtained from the pistachio root region, and the LO41 isolate obtained from the Phytopathology Laboratory collection.
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Conclusion & Impact:According to the results of the experiment evaluating the antagonistic activity of volatile metabolites produced by C. rosea isolates, F10 was the most effective, inhibiting the pathogen by 9.04%.
🔬Design:Araştırma Makalesi
📍Scope:2022-2023 Verileri
⚙️Variables:Pistachios · root rot · Clonostachys rosea

Abstract

This study was conducted in the Phytopathology Laboratory and controlled-environment growth chamber of Siirt University during 2022-2023 to evaluate the efficacy of Clonostachys rosea against root rot caused by Fusarium solani in pistachio (Pistacia vera L.). The study material included F. solani KY1, previously isolated from pistachio roots and identified as pathogenic, along with C. rosea isolates F8, F9, and F10, also obtained from the pistachio root region, and the LO41 isolate obtained from the Phytopathology Laboratory collection. According to the results of the experiment evaluating the antagonistic activity of volatile metabolites produced by C. rosea isolates, F10 was the most effective, inhibiting the pathogen by 9.04%. In the dual culture assay, the LO41 isolate exhibited the strongest antagonistic effect against the pathogen, with 17.20% inhibition. However, regarding the antagonists’ ability to overgrow and parasitize the hyphae of the pathogen, all isolates, except C. rosea F9, exhibited markedly stronger hyperparasitic activity. In the pot experiment conducted to evaluate the efficacy of the antagonists in soil artificially contaminated with F. solani, the disease severity in the positive control (F. solani KY1) was 72.50%. Following the application of C. rosea isolates F10, F8, LO41, and F9, disease severity was reduced to 20.00%, 27.50%, 37.50%, and 52.50%, respectively. The pathogen suppression rates of the antagonists were 72.41%, 62.06%, 48.27%, and 27.58%, respectively, indicating that C. rosea F10 was the most effective isolate. Consequently, the capability of C. rosea as a biological control agent against F. solani, a major soil-borne pathogen in pistachios, was further investigated.

Özet

This study was conducted in the Phytopathology Laboratory and controlled-environment growth chamber of Siirt University during 2022-2023 to evaluate the efficacy of Clonostachys rosea against root rot caused by Fusarium solani in pistachio (Pistacia vera L.). The study material included F. solani KY1, previously isolated from pistachio roots and identified as pathogenic, along with C. rosea isolates F8, F9, and F10, also obtained from the pistachio root region, and the LO41 isolate obtained from the Phytopathology Laboratory collection. According to the results of the experiment evaluating the antagonistic activity of volatile metabolites produced by C. rosea isolates, F10 was the most effective, inhibiting the pathogen by 9.04%. In the dual culture assay, the LO41 isolate exhibited the strongest antagonistic effect against the pathogen, with 17.20% inhibition. However, regarding the antagonists’ ability to overgrow and parasitize the hyphae of the pathogen, all isolates, except C. rosea F9, exhibited markedly stronger hyperparasitic activity. In the pot experiment conducted to evaluate the efficacy of the antagonists in soil artificially contaminated with F. solani, the disease severity in the positive control (F. solani KY1) was 72.50%. Following the application of C. rosea isolates F10, F8, LO41, and F9, disease severity was reduced to 20.00%, 27.50%, 37.50%, and 52.50%, respectively. The pathogen suppression rates of the antagonists were 72.41%, 62.06%, 48.27%, and 27.58%, respectively, indicating that C. rosea F10 was the most effective isolate. Consequently, the capability of C. rosea as a biological control agent against F. solani, a major soil-borne pathogen in pistachios, was further investigated.

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Cite This Article

Yildirim, M., Aydın, M. H., *, M. H. A. (2026). Investigation of the Effectiveness of Clonostachys rosea (Sch.) Schroers & Samuels on Root Rot Caused by Fusarium solani (March.) Sacc. in Pistachio (Pistacia vera L.). Türkiye Tarımsal Araştırmalar Dergisi, Cilt: 13 Sayı: 2, 122–130. https://doi.org/10.19159/tutad.1924120

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