Araştırma Makalesi

Isolation and characterization of Bacillus megaterium isolates from dead pentatomids and their insecticidal activity to Palomena prasina nymphs

Cilt: 7 Sayı: 1 15 Temmuz 2018
  • Hasan Murat Aksoy
  • Celal Tuncer
  • İslam Saruhan *
  • İsmail Erper
  • Murat Öztürk
  • İzzet Akca
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Isolation and characterization of Bacillus megaterium isolates from dead pentatomids and their insecticidal activity to Palomena prasina nymphs

Öz

Bacillus megaterium isolates, were demonstrated to be efficient biocontrol agents against the green shield bug (Palomena prasina L., Heteroptera: Pentatomidae). Firstly hazelnut orchards were surveyed and four B. megaterium isolates were obtained from P. prasina. The morphological, physiological and biochemical characteristics of B. megaterium isolates were determined according to the standardized methodology. Additionally 16S rRNA gene sequence analyse was performed to determine the isolates. Analysis of the 16S rRNA gene confirmed that isolates Sa-1, Sa-5, SAk-2 and SAkc-19 are B. megaterium, with 100% sequence homology to the type strains of B. megaterium. Effectiveness of these isolates was tested against P. prasina nymphs in laboratory, at 25±1°C and 70±5 RH. Isolates were bioassayed against nymphs and dead individuals were counted daily, following a 12 days lasting treatment. Lethal time (LT50 and LT90) values of B. megaterium isolates were calculated. LT50 values of the two most active isolates were 1.91 and 11.18 days. The highest mortality rate was 98% obtained with the treatment of SAkc-2 isolates at concentrations of 108 cfu ml-1 on the 12th day of post treatment.

Anahtar Kelimeler

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

-

Bölüm

Araştırma Makalesi

Yazarlar

Hasan Murat Aksoy Bu kişi benim

Celal Tuncer Bu kişi benim

İsmail Erper Bu kişi benim

Murat Öztürk Bu kişi benim

İzzet Akca Bu kişi benim

Yayımlanma Tarihi

15 Temmuz 2018

Gönderilme Tarihi

19 Aralık 2017

Kabul Tarihi

-

Yayımlandığı Sayı

Yıl 1970 Cilt: 7 Sayı: 1

Kaynak Göster

APA
Aksoy, H. M., Tuncer, C., Saruhan, İ., Erper, İ., Öztürk, M., & Akca, İ. (2018). Isolation and characterization of Bacillus megaterium isolates from dead pentatomids and their insecticidal activity to Palomena prasina nymphs. Akademik Ziraat Dergisi, 7(1), 21-28. https://doi.org/10.29278/azd.440586

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