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http://dx.doi.org/10.5423/RPD.2012.18.3.231

Construction of ELISA System for the Detection of Indian citrus ringspot virus  

Shin, Myeung-Ju (Department of Microbiology and Research Institute for Life Science, Gyeongsang National University)
Kwon, Young-Chul (Department of Microbiology and Research Institute for Life Science, Gyeongsang National University)
Ro, Hyeon-Su (Department of Microbiology and Research Institute for Life Science, Gyeongsang National University)
Lee, Hyun-Sook (Department of Microbiology and Research Institute for Life Science, Gyeongsang National University)
Publication Information
Research in Plant Disease / v.18, no.3, 2012 , pp. 231-235 More about this Journal
Abstract
Indian citrus ring spot virus (ICRSV) is known to cause a serious disease to citrus, especially to Kinnow mandarin, the popular cultivated citrus species in India. In this study, we developed diagnostic systems based on enzyme-linked immunosorbent assay (ELISA). In order to generate antibodies against ICRSV coat protein, we overexpressed the coat protein in Escherichia coli using the pET15b expression vector containing an optimized ICRSV coat protein gene. The recombinant ICRSV coat protein was overexpressed as soluble form at $37^{\circ}C$ upon IPTG induction. The protein was purified to 95% in purity by Ni-NTA column chromatography. The purified protein was immunized to rabbit for the generation of polyclonal antibody (PAb). The PAb showed a specific immunoreaction to recombinant ICRSV coat protein in western blot analysis and ELISA. Diluted rabbit antisera (10,000 fold) could detect less than 10 ng and 5 ng of the target protein in western blot and ELISA analysis, respectively.
Keywords
Diagnosis; ELISA; Indian citrus ringspot virus; Polyclonal antibody;
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