Van’ın Erciş, Gevaş ve Edremit ilçelerinde Biber, Domates ve Kavundan Fusarium spp. ve Rhizoctonia spp.’nin Teşhisi ve Patojeniteleri

Abstract

The aim of this study was to identify Rhizoctonia and Fusarium species isolated from tomato, pepper and melon plants grown in Erciş, Gevaş and Edremit districts of Van and to determine their pathogenicity. Survey studies were carried out in 2018 and 10 Rhizoctonia (from peppers whole Rhizoctonia solani; 2 AG-3, 1 AG-5, and 1 AG-2; from tomatoes 2 binucleic AG-K, 2 Rhizoctonia solani AG-4 and 2 Rhizoctonia solani AG-2) and 47 Fusarium isolates (10 from melons; 6 F. oxyporum, 2 F. solani, 2 F. equiseti and 6 Fusarium from peppers; 3 F. solani, 3 F. oxysporum and 31 from tomatoes; 2 binucleic AG-K, 2 Rhizoctonia solani AG-4, 2 Rhizoctonia solani AG-2) were obtained from the roots. Anastomosis groups (AG) of Rhizoctonia isolates and species identification of Fusarium isolates were made by classical methods. A total of 57 fungal isolates were obtained from the samples collected within the scope of the study. In the pathogenicity experiment, 14 Fusarium isolates were selected to represent the regions and all Rhizoctonia isolates isolated due to their low numbers were used. As a result of the experiment, it was determined that F. solani in pepper and F. oxysporum in tomatoes and melons were more pathogenic in Fusarium isolates. In Rhizoctonia species, R. solani AG-3 in peppers, R. solani AG-4 and binücleic Rhizoctonia AG-K in tomatoes were found to be more pathogenic. In this study, R. solani AG-5 and R. solani AG-3 from pepper, R. solani AG-2 from tomato and pepper, binucleic Rhizoctonia AG-K from tomato were isolated and anastomosis groups were determined for the first time in Van.

Determination of fungal root and stem rot agents of melons grown in Kumluca/Antalya

“…This pathogen also caused decrease on plant fresh and dry weights and root lengths of melon plants. F. equiseti caused 46.3% severity but it did not significantly change plant growth parameters, whereas F. solani decreased root lengths of the plants with 53% severity (Teniz and Demirer Durak 2023). In this study, M. phaseolina and R. solani isolates also caused severe disease on melon seedlings.…”

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

“…Özellikle R solani, dünya çapında yıllık ürün kaybına (%20-40) neden olan Solanaceae familyasına ait tarımsal ürünlerde farklı hastalıklara neden olan, toprak kaynaklı önemli bir fungal bitki patojenidir (Ghosh et al, 2017). Domateste oluşturduğu zarar ile öne çıkan bu patojenin virülensliği, anastomosis grupları ve mücadelesi ülkemizde yoğun bir şekilde çalışılmıştır (Tuncer & Erdiller, 1990;Demirci & Döken, 1995;Yildiz & Döken, 2002;Buhur, 2014;Yıldırım, 2017;Aşkın vd., 2018;Durak & Ok, 2019;Eken & Tuncer, 2019;Teniz, 2020). Bu hastalıkların mücadelesinde bitki atıklarının yok edilmesi, solarizasyon, ekim nöbeti ve fungisit uygulamaları gibi yöntemler önerilmektedir.…”

The Complex Interplay between Arbuscular Mycorrhizal Fungi and Strigolactone: Mechanisms, Sinergies, Applications and Future Directions

“…They are not only a source of food for humans and animals and the main point of entrance of solar energy and organic carbon in ecosystems, but they also play a critical role in regulating the Earth's climate and sustaining the planet's biodiversity. However, plants are constantly under threat from various biotic and abiotic stresses, such as pests, diseases and environmental factors, like drought and salinity [1][2][3]. Under the current context of anthropogenic global warming, forest and cultivated plants must adapt to the novel conditions or become extinct [4,5].…”