genotyping of different pestiviruse isolates by rt-pcr

Genotyping of Different Pestiviruse Isolates by RT-PCR

1320 blood samples were collected from herds showing clinical signs of pestiviral infections. 39 samples were positive in Ag-ELISA assay. All these 39 samples in addition to 5 cytopathic strains were cultured in MD-BK cell line and presence of pestiviral antigens was confirmed by direct-immunofluorescent test. 27 out of 44 BVDV suspected isolates were detected by RT-PCR using a primer set. Diff...

Serotype Identification of Recent Iranian Isolates of Infectious Bronchitis Virus by Type-Specific Multiplex RT-PCR

Development of a Real Time Rt-pcr Assay for Detecting Genetically Different Pepino Mosaic Virus Isolates

Over a period of few years, Pepino mosaic virus (PepMV) has become one of the most important viral pathogen in tomato production worldwide. So far, five PepMV genotypes (EU, LP, CH2, US2 and US1) have been detected. A real time reverse transcription polymerase chain reaction (RTPCR) procedure, using the fluorescence dye SYBR Green was developed for a rapid and reliable detection of genetically ...

Detection and Genotyping of Hepatitis D Virus from HBsAg Positive Patients in Iran Using RT-PCR

Hepatitis Delta virus (HDV) is a degenerate RNA virus or virusoid and a satellite of Hepatitis B virus (HBV). Three distinct genotypes are described for HDV; genotype I is distributed worldwide but other genotypes appear to be more restricted geographically. In the present study, an RT-nested PCR method was set up to detect delta infection from serum samples. Moreover, the target amplified sequ...

A Real-Time RT-PCR Assay for Genotyping of Rotavirus Strains

Background: Human rotavirus (HRV) is the causative agent of severe gastroenteritis in children and responsible for two million hospitalizations and more than a half-million deaths annually. Sequence characteristics of the gene segments encoding the VP7 and VP4 proteins are used for the genotype classification of rotavirus. A wide variety of molecular methods are available, mainly based on rever...

Rapid detection and differentiation of Newcastle disease virus isolates by a triple one-step RT-PCR.

A triple one-step RT-PCR was developed to screen and differentiate virulent from avirulent Newcastle disease virus (NDV) isolates. Three sets of oligonucleotides were designed, each specific for amplifying NDV fusion protein gene-specific RNA from virulent, avirulent or all isolates respectively. The sensitivity of one-step RT-PCR was determined using viral RNA extracted from serially diluted N...