Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2402
Title: Identification and bioactivity of native strains of Bacillus thuringiensis from grain-related habitats in Turkey
Authors: Apaydın, Özgür
Çınar, Çelenk
Turanlı, Ferit
Harsa, Hayriye Şebnem
Güneş, Hatice
Apaydın, Özgür
Çınar, Çelenk
Harsa, Hayriye Şebnem
Izmir Institute of Technology. Food Engineering
Keywords: Bacillus thuringiensis
Bioactivity
Ephestia kuehniella
Serotyping
Spodoptera littoralis
Issue Date: Apr-2008
Publisher: Elsevier Ltd.
Source: Apaydın, Ö., Çınar, Ç., Turanlı, F., Harsa, H. Ş., and Güneş, H. (2008). Identification and bioactivity of native strains of Bacillus thuringiensis from grain-related habitats in Turkey. Biological Control, 45(1), 21-28. doi:10.1016/j.biocontrol.2008.01.011
Abstract: A native collection of Bacillus thuringiensis (Bt) strains originated from grain-related habitats in Turkey was characterized according to serotype, cry1 gene content, and bioactivity against Ephestia kuehniella (Lepidoptera: Phycitidae) and Spodoptera littoralis (Lepidoptera: Noctuidae). Twenty-three different serotypes as well as 24 unknown serotypes were obtained from 56 positively agglutinated strains with previously characterized antisera. Most common serovars were sotto, kim, and tochigiensis with the percentages of 14, 14, and 13, respectively. Among the cry1 gene-positive 36 strains, cry1E (100%), cry1Aa (94%), cry1Ac (92%), and cry1D (83%) genes were the most abundant. Bioactivity tests with 56 Bt strains carrying cry1, cry2, and/or cry9 genes indicated that all of them resulted in growth retardation or inhibition of larvae of both E. kuehniella and S. littoralis; however, only one strain, 85PPb (serovar morrisoni), caused high mortality in both insects (84% and 100%, respectively). Different crystal morphology was observed for the strain 85PPb and the standard strain B. thuringiensis subsp. morrisoni. Finally, no correlation was found among serotype, cry gene content and biotoxicity of Bt strains in the collection.
URI: http://doi.org/10.1016/j.biocontrol.2008.01.011
http://hdl.handle.net/11147/2402
ISSN: 1049-9644
1049-9644
Appears in Collections:Food Engineering / Gıda Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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