# Commission Directive 2006/56/EC of 12 June 2006 amending the Annexes to Council Directive 93/85/EEC on the control of potato ring rot, Division 9.3: PCR test

Extent: E+W+S+N.I.

(a) Prepare a suspension of approximately 106 cells per ml in ultra pure water (UPW).
(b) Heat 100 µl of the cell suspension in closed tubes in a heating block or boiling waterbath at 100 °C for four minutes. If required, addition of freshly-prepared NaOH to a final concentration of 0,05M may assist cell lysis. The samples may then be stored at -16 to -24 °C until required.
(c) Apply appropriate PCR procedures to amplify C. m. subsp. sepedonicus specific amplicons (e. g. Pastrik, 2000; see Appendix 4; Li and de Boer, 1995; Mills et al., 1997; Pastrik and Rainey, 1999; Schaad et al., 1999.
(d) A positive identification of C. m. subsp.sepedonicus is achieved if the PCR amplicons are the same size and have the same restriction fragment length polymorphisms as for the positive control strain.

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Source: https://www.legislation.gov.uk/eudr/2006/56/annex/I/division/9/division/9.3 (the official version)
Page: https://openlegislation.uk/eu-directive-2006-56/annex-I/division-9/division-9.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.