Ralstonia solanacearum, (race 1): Findings in ornamental Rosa plants for planting

Date de publication

lun, 26 Oct 2015, 14:54

Dernière mise à jour effectuée le

oct. 26, 2015, 2:58 après-midi

Report Number

NLD-40/2

Pays

Netherlands, Kingdom of the

Identité de l'organisme nuisible

Ralstonia solanacearum race 1 - (PSDMSO)

Situation du signalement

Préliminaire

Hôtes

Rosa

Pest Status (old values from ISPM 8 -1998 )

• Transient: actionable, under eradication

Pest Status (ISPM 8 - 2021)

• Present: transient

Résumé

This report concerns the official finding of Ralstonia solanacearum in the Netherlands at a glasshouse company producing Rosa cut flowers, variety ‘Armando’. The finding was triggered following symptoms observed. The identity was confirmed on September 11 2015. Trace-back and trace-forward have revealed two more suspicions, including a propagation company. Investigations are on-going. Most likely the interception concerns race 1 of R. solanacearum (under investigation). Many plants at various locations in one block of the variety ‘Armando’, within the greenhouse exhibited symptoms. This finding is the first record of R. solanacearum on Rosa sp. Measures have been taken aimed at eradication and for preventing spread. The possible source of the outbreak is unknown and under investigation. Thus far no link is established with an earlier finding of Ralstonia solanacearum (race 1) on Anthurium (see NL pest report August 2015) and an earlier finding on Curcuma plants for planting in 2014 (see NL pest report August 2014). To further investigate a possible link a comparative DNA analysis is planned on all three isolates of these R. solanacearum findings. Completion of a specific surveillance amongst Curcuma growers confirmed eradication for this crop. Eradication measures for the finding in Anthurium plants for cut flower production have been completed. A specific surveillance for confirming absence in Anthurium plants is planned for the coming year.

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Ralstonia solanacearum, (race 1): Findings in ornamental Rosa plants for planting

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