# Council Directive 98/57/EC of 20 July 1998 on the control of Ralstonia solanacearum (Smith) Yabuuchi et al., Division 1.3: Symptoms on other hosts

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

Solanum dulcamara and S. nigrum plants . Under natural conditions, wilting symptoms are rarely observed in these weed hosts unless soil temperatures exceed 25 °C or inoculum levels are extremely high (e.g. as for S. nigrum growing adjacent to diseased potato or tomato plants). When wilting does occur, the symptoms are as described for tomato. Non-wilting S. dulcamara plants growing with stems and roots in water may show internal light brown discolouration of vascular tissues on transverse section of the stem base or underwater stem parts. Bacteria may ooze from cut vascular tissues or form threads of slime if the cut stem is placed vertically in water, even in the absence of wilting symptoms.

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Source: https://www.legislation.gov.uk/eudr/1998/57/annex/II/section/II/division/1/division/1.3 (the official version)
Page: https://openlegislation.uk/eu-directive-1998-57/annex-II/section-II/division-1/division-1.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.