Detection of Cowpea mild mottle virus (Carlavirus) in Queensland

Date de publication

jeu, 18 Mai 2017, 01:49

Dernière mise à jour effectuée le

juin 23, 2023, 5:19 matin

Report Number

AUS-83/2

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).

Pest Status (old values from ISPM 8 -1998 )

• Present: only in some areas

Pest Status (ISPM 8 - 2021)

• Present: not widely distributed and not under official control

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 [email protected]

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