5441337078

Overview of Musa virus diseases

G. Pieter sen" and J.E. Thomas^b

Agricultural Research Council, Plant Protection Research Institute,

PB XI34, Pretoria, 0001, South Africa Queensland Horticulture Institute, DPI, 80 Meiers Road,

Indooroopilly, Qld, Australia 4068

Abstract

Bananas and other Musa spp. are affected by five known, relatively well-characterized viruses: these are Banana bunchy top virus (BBTV) genus Nanavirus\ Banana streak virus (BSV) genus Badnavirus, Cucumber mosaic virus (CMV) genus Cucumovi-rus, Banana bract mosaic virus (BBrMV) genus Potyvirus, and Abaca mosaic virus (AbaMV) genus Potyvirus. Recently, new filamentous virus particles have been noted in bananas from Africa, the Americas, southeast Asia, and Australia. The virus has been isolated and characterized and the name Banana mild mosaic virus proposed. Another new virus, Banana die-back virus, has also just been described from Nigeria. Currently known properties of these viruses, their distribution and importance, diagnosis and control will be discussed.

Resume

Les bananes et d’autres Musa spp sont affectees par cinq virus connus relativement bien caracterises. II s’agit du virus du renflement de la partie superieure (Nanavirus); du virus de la stirure de la banane (Badnavirus); du virus de la mosaiąue du concom-bre (Cucumovirus), du virus de la mosai'que de la banane (Potyvirus) et du virus de la mosai'que abaka (Potyvirus). Recemment, de nouvelles particules virales filamenteuses ont ete signalees sur la banane en provenance d’Afrique, des Ameriques, d’Asie du Sud-est et d’Australie. Le virus a ete isole et caracterise et 1’appellation « mosai'que legere de la banane » a ete proposee. Un autre nouveau virus, le virus du deperissement terminal de la banane vient d’etre decrit au Nigeria. Cette presentation fera le point sur les caracteristiques connus de ces virus, leur distribution et importance , ainsi que les methodes de diagnostic et de lutte.

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