Hypericum spp. Bitki Ekstraktlarının Rhizoctonia Solani Üzerine Antifungal Etkisi

Yıl 2021, , 812 - 821, 25.04.2021

Cennet Yaman , Sevim Atmaca

https://doi.org/10.29130/dubited.768656

Öz

Bu çalışmada, önemli tıbbi ve aromatik bitki olan Hypericum türlerinin Rhizoctonia solani üzerine antifungal aktivitesi incelenmiştir. Hypericum türlerinin (H. heterophyllum, H. scabrum ve H. perforatum) çiçek, gövde ve yapraklarının bazı çözücülerdeki (metanol, etanol, aseton ve kloroform) ekstraktlarının %2’lik konsantrasyonu Rhizoctonia solani’ye karşı test edilmiştir. Ekstraktların antifungal aktiviteleri bu patojen ile mücadelede kullanılan ve sentetik fungusit olan Captan ile kıyaslanmıştır. Sonuçlara göre; R. solani patojeni üzerine en etkili ekstraktların her üç türünde kloroformda çözünen gövde kısımları olduğu, tüm örnekler içerisinde ise en yüksek engelleme oranı %68.5 ve %68.1 ile H. scabrum türlerinin sırasıyla kloroformlu ve asetonlu gövde ekstraktlarında belirlenmiştir. Ayrıca, etkili bulunan bu ektrakların in vitro şartlarda R. solani patojeni ile bulaştırılan patates yumrusunda etkisi araştırılmış, kontrol ve Captan fungisiti uygulamalarında misel oluşumu gözlenirken, ekstrakt uygulanan ortamlarda saptanmamıştır. Sonuç olarak, Hypericum bitkisinin gövde kısımlarında R. solani patojenine karşı etkili olan bileşik veya bileşiklerin olduğu, aseton ve kloroform tarafından daha etkili formda çözündüğü tespit edilmiştir.

Anahtar Kelimeler

Antifungal, Rhizoctoni solani, Hypericum heterophyllum, Hypericum scabrum, Hypericum perforatum

Destekleyen Kurum

Yozgat Bozok üniversitesi, Bilimsel Araştırma Projeleri Koordinasyon Birimi

Proje Numarası

6602c-ZF/17-137

Teşekkür

Bu çalışma Yozgat Bozok Üniversitesi Bilimsel Araştırma Projeleri tarafından desteklenmiştir (Proje no: 6602c-ZF/17-137).

Effect of Solvent and Plant Part on Rhizoctoni solani Fungus of Hypericum Extracts

Öz

In this study, plant extracts (2% concentration) from different parts (flower, leaf and stem) of Hypericum species (H. heterophyllum, H. scabrum ve H. perforatum), obtained with various organic solvents (methanol, ethanol, acetone and chloroform) were tested against the fungus Rhizoctonia solani. The antifungal activities of the extracts were compared with Captan, a synthetic fungicide used to combat this pathogen. According to the results, the most effective extracts on the R. solani pathogen were found stem parts that dissolve in chloroform for all three Hypericum species. Of all the extracts, the stem extracts with chloroform and acetone of H. scabrum species had the highest inhibition value with 68.5% and 68.1%, respectively. In addition, the effects of these extracts, which were found to be effective, on potato tuber contaminated with the R. solani pathogen in vitro conditions were investigated. Although the micelle formation was observed on the control and Captan fungicide applications, it was not detected on extract application. As a result, it has been determined that the stem parts of the Hypericum species have compound or compounds that have high antifungal activity against R. solani pathogen, and are dissolved in more effective form by acetone and chloroform..

Anahtar Kelimeler

Antifungal, Rhizoctoni solani, Hypericum heterophyllum, hypericum scabrum, Hypericum perforatum

Proje Numarası

6602c-ZF/17-137

Kaynakça

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