Detection of Cowpea mild mottle virus (Carlavirus) in Queensland

Date de publication
jeu, 18 Mai 2017, 03:49
Dernière mise à jour effectuée le
mai 18, 2017, 3:49 matin
Report Number
AUS-83/1
Pays
Australia
Identité de l'organisme nuisible
Cowpea mild mottle carlavirus - (CPMMV0)
Situation du signalement
Final
Hôtes
Common bean (Phaseolus vulgaris), peanut (Arachis hypogaea), tomato (Solanum lycopersicum), chia (Salvia hispanica), cowpea (Vigna unguiculata) and soybean (Glycine max).
Situation de l’organisme nuisible
  • Present: only in some areas
Distribution géographique
Fassifern and Lockyer Valley, Queensland
Résumé

Cowpea mild mottle virus is known to cause severe distortion, twisting and discolouration of the pods as well as mosaic/mottling symptoms on leaves in beans. The virus infects peanut (Arachis hypogaea) and tomato (Solanum lycopersicum), in addition to chia, common bean (Phaseolus vulgaris), cowpea (Vigna unguiculata) and soybean. Cowpea mild mottle virus is transmitted by whitefly (Bemisia tabaci) in a non-persistent manner. The virus is also transmitted through cowpea and soybean seed. Disease incidence in bean crops inspected in Fassifern, Queensland was high-between 50%-90% symptomatic plants. Several bean crops were not harvested due to severe pod damage and beans from other crops have been downgraded or require considerable sorting in the pack house to remove affected pods.

Work to determine host range and mode of transmission, reduce disease inoculum over winter and to minimise impact on growers is in progress.

Danger
Cowpea mild mottle virus has been detected in Australia in two locations (Fassifern and Lockyer Valley, Queensland) on three hosts French bean cv Wyatt (mainly) (Phaseolus vulgaris), soybean (Glycine max) and chia (Salvia hispanica).
Contact pour demandes d'information
Australian Chief Plant Protection Officer Australian Government Department of Agriculture and Water Resources GPO Box 858 Canberra ACT 2601 IPPC.contactpoint@agriculture.gov.au
Mots-clés associés au thème
Pest reporting
Mots-clés associés à la marchandise

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