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Scientia Agricola

On-line version ISSN 1678-992X


MACIEL, Scheila da Conceição; NAKANO, Daniel Hiroshi; REZENDE, Jorge Alberto Marques  and  VIEIRA, Maria Lúcia Carneiro. Screening of Passiflora species for reaction to Cowpea aphid-borne mosaic virus reveals an immune wild species. Sci. agric. (Piracicaba, Braz.) [online]. 2009, vol.66, n.3, pp.414-418. ISSN 1678-992X.

Cowpea aphid-borne mosaic virus (CABMV) is a potyvirus that causes the most serious virus disease of passion fruit crops in Brazil. It is transmitted by several species of aphids in a non-persistent, non-circulative manner. The reaction of 16 species of Passiflora to infection by mechanical inoculation with four Brazilian isolates of CABMV was evaluated under greenhouse conditions. Only P. suberosa, a wild species, was resistant to infection by all virus isolates, in two independent assays. P. suberosa grafted onto infected P. edulis f. flavicarpa did not develop symptoms; neither was the virus detected by RT-PCR in the upper leaves, suggesting that this species is immune to CABMV.

Keywords : Passifloraceae; potyvirus; resistance.

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