Abstract

REICHEL, Helena; CUERVO, Maritza  and  MORALES, Francisco J.. Partial characterization of a Potexvirus isolated from a Musa coccinea plant affected by necrotic streak in Colombia. Agron. colomb. [online]. 2008, vol.26, n.2, pp.285-291. ISSN 0120-9965.

Necrotic streak symptoms were observed on the leaves of a Musa coccinea (scarlet banana) plant from Antioquia (Colombia). Immune capture reverse transcription polymerase chain reaction (ICRT-PCR) amplified a DNA fragment of approximately 377 base pairs showing amino acid sequence identities of 57% with the coat protein of Alstroemeria virus X (AlsVX, AB206396) genus Potexvirus. This is the first report of a Potexvirus infecting M. coccinea. Alignments of the 3'UTRs of the M. coccinea Potexvirus and AlsVX showed that these two viruses differ in a significant way in this region, which suggests that the Potexvirus isolated from M. coccinea in Colombia is a new specie in the genus Potexvirus. We propose the name of Scarlet banana necrotic streak virus (SBanNSV) for the Potexvirus that was isolated from M. coccinea.

Keywords : scarlet; banana, protein coat; Flexiviridae; SBanNSV; 3'UTR.

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