selcuk j agr food sci Selcuk Journal of Agriculture and Food Sciences 2458-8377 2458-8377 Selçuk Üniversitesi 10.15316/selcukjafsci.1619096 Phytopathology Fitopatoloji Domates Kök ve Kökboğazı Çürüklüğü Hastalığının Kontrolünde Düşük Abiotik Stres ve DL-β-Aminobütirik Asit ile Asibenzolar-S-metil'in Priming Uygulamasında Karşılaştırılması Priming by Low Abiotic Stress and DL-β-Aminobutyric Acid Compared to Acibenzolar-S- methyl to Control of Tomato Crown and Root Rot Disease https://orcid.org/0000-0001-6547-3747 Silme Ragıp Soner İSTANBUL ÜNİVERSİTESİ, BİYOTEKNOLOJİ VE GENETİK MÜHENDİSLİĞİ UYGULAMA VE ARAŞTIRMA MERKEZİ 04 28 2026 40 1 142 151 01 14 2025 02 15 2026 Copyright © 1991, Selcuk Journal of Agriculture and Food Sciences 1991 Selcuk Journal of Agriculture and Food Sciences

Fusarium oxysporum f.sp. radicis-lycopersici (FORL) tarafından neden olunan taç ve kök çürüklüğü hastalığı, Türkiye'deki seralarda domates (Lycopersicon esculentum Mill) fidelerinde ve olgun bitkilerinde yıkıcı bir patojendir. Bilinen kimyasal savunma uyarıcılarından DL-β-Aminobütirik asit (BABA) ile abiyotik stresin (100 mM NaCl) sinerjik etkisi domates bitkilerinde test edilmiştir. Bitkilerin kökleri 125 ve 500 µg mL-1 BABA'ya daldırılmış veya bitkilerin yapraklarına ayrı ayrı BABA (125, 500 µg mL-1) püskürtülmüş ve ardından bitkiler, işlemden sonraki 1. günde spor süspansiyonu ile aşılanmıştır. Ayrıca, sadece BABA ve abiyotik stres (yaprak spreyi) ile yapılan başka bir çalışmada, bitkiler BABA (125 µg mL-1) çözeltisine daldırıldığında bitki hastalıklarına karşı kayda değer bir direnç gözlemlenmiştir. Bu kombinasyon, bitkiler üzerinde olumlu bir etki yaratmış ve bu etki, en yüksek BABA konsantrasyonu olan 500 µg mL-1'e daldırılan bitkilerle karşılaştırılabilir düzeyde olmuştur. Abiyotik stres ve BABA kombinasyonunun kullanıldığı bitkilerdeki hastalık şiddeti, kontrol grubuna ve sadece 500 µg mL-1 BABA'nın püskürtüldüğü (kontrol) bitkilere göre, aşılamadan sonraki 20. güne kadar daha düşük olmuştur. Bu nedenle, tuz stresi ve BABA'nın sinerjik etkisinin, bitkilerin FORL'ye karşı direncinde rol oynayabileceği öne sürülebilir.

Crown and root rot disease caused by Fusarium oxysporum f.sp. radicis-lycopersici (FORL) is a destructive pathogen on the seedling and mature tomato (Lycopersicon esculentum Mill) plants in greenhouses of Turkey. The synergistic effect of abiotic stress (100 mM NaCl) by known chemical defense inducers DL-β-Aminobutryric acid (BABA) to FORL was tested on tomato plants. The roots of plants were immersed into 125, and 500 µg mL-1 BABA or foliages of plants were separately sprayed by BABA (125, 500 µg mL-1) before the plants were inoculated with fungal spore suspension by day 1 post treatment. Furthermore, in another study conducted on only by BABA and abiotic stress (foliar spray) resulted in remarkable plant disease resistance if the plants were detached into BABA (125 µg mL-1) solution. This combination caused a positive effect on plants, which was comparable with the plants detached into the highest BABA concentration at 500 µg mL-1. Disease severity of plants on which abiotic stress and BABA combination used was also lower than the control and BABA sprayed at 500 µg mL-1 to nontreated (control) plants alone until the 20th day post inoculation. Therefore, synergistic effect by salt stress and BABA can be suggested for plant resistance to FORL.

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