ArticleBMC biotechnology2016
Protoplast transformation as a potential platform for exploring gene function in Verticillium dahliae.
Article in BMC biotechnology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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35 citing papers in PubMed, 57 citations in OpenAlex.
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLarge efforts have focused on screening for genes involved in the virulence and pathogenicity of Verticillium dahliae, a destructive fungal pathogen of numerous plant species that is difficult to control once the plant is infected. Although Agrobacterium tumefaciens-mediated transformation (ATMT) has been widely used for gene screening, a quick and easy method has been needed to facilitate transformation.
resultsHigh-quality protoplasts, with excellent regeneration efficiency (65 %) in TB3 broth (yeast extract 30 g, casamino acids 30 g and 200g sucrose in 1L H20), were generated using driselase (Sigma D-9515) and transformed with the GFP plasmid or linear GFP cassette using PEG or electroporation. PEG-mediated transformation yielded 600 transformants per microgram DNA for the linear GFP cassette and 250 for the GFP plasmid; electroporation resulted in 29 transformants per microgram DNA for the linear GFP cassette and 24 for the GFP plasmid. To determine whether short interfering RNAs (siRNAs) can be delivered to the protoplasts and used for silencing genes, we targeted the GFP gene of Vd-GFP (V. dahliae GFP strain obtained in this study) by delivering one of four different siRNAs-19-nt duplex with 2-nt 3' overhangs (siRNA-gfp1, siRNA-gfp2, siRNA-gfp3 and siRNA-gfp4)-into the Vd-GFP protoplasts using PEG-mediated transformation. Up to 100 % silencing of GFP was obtained with siRNA-gfp4; the other siRNAs were less effective (up to 10 % silencing). Verticillium transcription activator of adhesion (Vta2) gene of V. dahliae was also silenced with four siRNAs (siRNA-vta1, siRNA-vta2, siRNA-vta3 and siRNA-vta4) independently and together using the same approach; siRNA-vta1 had the highest silencing efficiency as assessed by colony diameter and quantitative real time PCR (qRT-PCR) analysis.
conclusionOur quick, easy transformation method can be used to investigate the function of genes involved in growth, virulence and pathogenicity of V. dahliae.
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