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Acta Virologica 2016 Acta Virologica Vol.60, No.1, p.34-40, 2016
Acta Virologica 2016 Acta Virologica Vol.60, No.1, p.34-40, 2016
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Acta Virologica Vol.60, No.1, p.34-40, 2016 |
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| Title: Genotypic characterization of Indian isolates of infectious bursal disease virus strains by reverse transcription-polymerase chain reaction combined with restriction fragment length polymorphism analysis | ||
| Author: C. V. PRIYADHARSINI, T. M. A. SENTHILKUMAR, P. RAJA, K. KUMANAN | ||
| Abstract: The reverse transcription PCR (RT-PCR) combined with restriction fragment length polymorphism (RFLP) is used for the differentiation of classical virulent (cv), virulent (v) and very virulent (vv) strains of infectious bursal disease virus (IBDV) isolates from chicken bursal tissues in southern states of India. In the present study, six different isolates (MB11, HY12, PY12, BGE14, VCN14 and NKL14) of IBDV strains were subjected for genotyping along with vaccine virus (Georgia, intermediate strain) using RT-PCR for amplification of a 743 bp sequence in the hypervariable region of VP2 gene followed by restriction enzyme digestion with 5 different restriction enzymes (BspMI, SacI, HhaI, StuI and SspI). The RT-PCR products obtained from vvIBDV strains were digested by SspI enzyme except PY12, BGE14 and MB11 isolates. The SacI digested the isolate MB11, PY12 and the vaccine strain, but it did not cleave the very virulent isolates of IBDV. HhaI cleaved all the isolates with different restriction profile patterns. StuI digested all the vvIBDV isolates and BspMI was not able to differentiate field isolates from vaccine strain. Though RT-PCR combined with RFLP is a genotypic method, further confirmation of serotypes to distinguish the vvIBDV from cvIBDV has to be carried out using pathogenicity studies. |
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| Keywords: infectious bursal disease virus; reverse transcription polymerase chain reaction; restriction fragment length polymorphism; VP2 gene; genotyping | ||
| Published online: 16-Mar-2016 | ||
| Year: 2016, Volume: 60, Issue: 1 | Page From: 34, Page To: 40 | |
| doi:10.4149/av_2016_01_34 |
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