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J Virol Methods. 2013 Feb;187(2):321-6. doi: 10.1016/j.jviromet.2012.10.006. Epub 2012 Nov 6.

Rapid detection and identification of viroids in the genus Coleviroid using a universal probe.

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1
Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China.

Abstract

A simple, low-cost hybridization assay using a universal DIG-labeled riboprobe for the rapid detection and identification of coleus viroids is presented. An octamer of 32-nucleotide sequence derived from the central conserved region (CCR) of viroids in the genus Coleviroid was used to develop a universal cRNA probe (8-central-conserved-region probe, 8CCR probe) for coleus viroids. Dot-blot hybridization assays demonstrated that the sensitivity of this probe was similar to specific probes for each CbVd, and Northern hybridization results revealed that at least four coleus viroids could be distinguished readily and simultaneously using the 8CCR probe. Batch detection assay showed that hybridization using the 8CCR probe can identify coleus viroids rapidly and effectively. This rapid and low-cost molecular hybridization technique is an effective way to survey the occurrence of coleus viroids, and has reference for the detection of other viroids and possibly viruses.

PMID:
23142252
DOI:
10.1016/j.jviromet.2012.10.006
[Indexed for MEDLINE]
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