TY - JOUR T1 - Gökkuşağı Alabalıklarından (Oncorhynchus mykiss) İzole Edilen Patojen Bakteri İzolatlarının Hidrolitik Enzim Aktiviteleri ve Siderofor Üretim Yetenekleri TT - Hydrolytic Enzyme Activities and Siderophore Production Capabilities of Pathogenic Bacterial Isolates from Rainbow Trout (Oncorhynchus mykiss) AU - Taşkın, Bilgin AU - Önalan, Şükrü PY - 2022 DA - December DO - 10.53433/yyufbed.1082784 JF - Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi JO - YYUFBED PB - Van Yüzüncü Yıl Üniversitesi WT - DergiPark SN - 1300-5413 SP - 512 EP - 520 VL - 27 IS - 3 LA - tr AB - Kısa sürede büyük miktarlarda kültürlenebilmeleri, genetik manipülasyonlara açık olmaları ve ürettikleri enzimlerin hayvansal ve bitkisel enzimlerden daha aktif ve istikrarlı oluşu bakterilerin çok önemli enzim ve ikincil metabolit kaynakları olarak değerlendirilmelerine sebep olmaktadır. Ayrıca ekstraselüler hidrolitik enzimler ve sideroforlar patojen bakteriler için çok önemli virülans faktörleri olarak bilinmektedir. Bu çalışmada, Van ilinde faaliyet gösteren çiftliklerde, gökkuşağı alabalıklarından (Oncorhynchus mykiss) izole edilerek kültüre alınmış dokuz adet bakteri izolatının çeşitli ekstraselüler hidrolitik enzimleri ve siderofor üretme yetenekleri ilk defa araştırılmıştır. Sonuçlar, test edilen izolatlardan dokuzunun proteaz, sekizinin lipaz, beşinin selülaz, ikisinin pektinaz aktivitesine sahip olduğu, ayrıca yedisinin siderofor üretme yeteneğine sahip olduğunu göstermiştir. Amilaz ve ksilinaz aktiviteleri hiçbir izolatta gözlemlenmemiştir. Ayrıca bu izolatlar morfolojik olarak olası üç ana gruba ayrılmış ve her bir izolat, türe özel geliştirilmiş primerler ile moleküler tanımlamaya tabi tutulmuştur. Türe özgü primerler kullanılarak yapılan moleküler tanımlama, bu izolatların balık patojeni Listonella anguillarum, Yersinia ruckeri ve Lactococcus garvieae olduklarını ortaya koymuştur. KW - Ekstraselüler enzim KW - Patojen bakteri KW - Siderofor N2 - The fact that they can be cultured in large quantities in a short time, that they are open to genetic manipulations, and that the enzymes they produce are more active and stable than animal and plant enzymes, cause bacteria to be considered as very important enzyme and secondary metabolite sources. Also, extracellular hydrolytic enzymes and siderophores are known as very important virulence factors for pathogenic bacteria. In this study, the ability to produce various extracellular hydrolytic enzymes and siderophores of nine bacterial isolates isolated from rainbow trout (Oncorhynchus mykiss) from farms operating in Van province was investigated for the first time. 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Applied Microbiology and Biotechnology, 106, 3985-4004. doi: 10.1007/s00253-022-11995-y UR - https://doi.org/10.53433/yyufbed.1082784 L1 - https://dergipark.org.tr/tr/download/article-file/2289790 ER -