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Rolling circle amplification to screen yam germplasm for badnavirus infections and to amplify and characterise novel badnavirus genomes

Rolling circle amplification to screen yam germplasm for badnavirus infections and to amplify and characterise novel badnavirus genomes

Bömer, Moritz ORCID: 0000-0003-1003-9622, Turaki, Aliyu, Rathnayake, Ajith, Silva, Goncalo ORCID: 0000-0001-5544-2947, Lava Kumar, P. and Seal, Susan ORCID: 0000-0002-3952-1562 (2018) Rolling circle amplification to screen yam germplasm for badnavirus infections and to amplify and characterise novel badnavirus genomes. Bio-protocol, 8 (1). ISSN 2331-8325 (Online) (doi:https://doi.org/10.21769/BioProtoc.2672)

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Abstract

Since the first discovery of badnaviruses (family Caulimoviridae, genus Badnavirus) in yam (Dioscorea spp.) germplasm in the 1970s (Harrison and Roberts, 1973), several hundred partial badnavirus reverse transcriptase (RT)-ribonuclease H (RNaseH) sequences have been characterised (Kenyon et al., 2008; Bousalem et al., 2009), but only a few complete Dioscorea bacilliform virus (DBV) genome sequences have been reported (Phillips et al., 1999; Seal and Muller, 2007; Bömer et al., 2016 and 2017; Sukal et al., 2017; Umber et al., 2017). We have optimised a workflow involving total nucleic acid extractions and rolling circle amplification (RCA) combined with restriction enzyme analysis for the detection and amplification of DBVs present in yam germplasm. We have employed this approach successfully revealing three novel episomal yam badnaviruses (Bömer et al., 2016). We proposed this to be a complementary method to denaturing gradient gel electrophoresis, which enables a rapid indication of badnavirus diversity as well as the identification of potentially integrated badnavirus sequences in the host genome (Turaki et al., 2017). Here, we describe the step-by-step protocol to screen yam germplasm for badnavirus infections using RCA as an efficient research tool in the amplification and characterization of novel badnavirus genomes.

Item Type: Article
Uncontrolled Keywords: Yam, Dioscorea spp., Episomal badnavirus, Endogenous pararetrovirus, DNA extraction, Diagnostics, Rolling circle amplification, Badna-PCR
Subjects: S Agriculture > S Agriculture (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Agriculture, Health & Environment Department
Faculty of Engineering & Science > Natural Resources Institute > Molecular Virology and Entomology Research Group
Last Modified: 23 Jan 2018 15:24
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/18881

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