%0 Journal Article
%T Levantamento revela a predominancia do Lettuce mottle virus em tr¨ºs regi es produtoras de alface no Estado de S o Paulo Frequency of LMV, LeMoV and BiMV in three lettuce producing areas from S o Paulo State
%A Bruno Rossitto De Marchi
%A David Marques de Almeida Spadotti
%A Milena Leite de Oliveira
%A M¨¢rcio Martinello Sanches
%J Summa Phytopathologica
%D 2012
%I Grupo Paulista de Fitopatologia
%R 10.1590/s0100-54052012000300012
%X Entre os problemas fitossanit¨¢rios da cultura da alface est o as doen as causadas por v¨ªrus. Tr¨ºs v¨ªrus causam sintomas de mosaico praticamente indistingu¨ªveis: o Lettuce mosaic virus (LMV, Potyvirus), o Lettuce mottle virus (LeMoV, Sequivirus) e o Bidens mosaic virus (BiMV, Potyvirus). Atrav¨¦s de RT-PCR utilizando-se oligonucleot¨ªdeos espec¨ªficos para cada um destes v¨ªrus, amostras de alface e plantas invasoras, preferencialmente com sintoma de mosaico, foram coletadas em campos de produ  o de alface das regi es de Mogi das Cruzes, Campinas e Bauru no Estado de S o Paulo e analisadas para a presen a dos v¨ªrus. Verificou-se que o LeMoV foi o v¨ªrus encontrado com maior freq¨¹¨ºncia, seguido do LMV. A ocorr¨ºncia de BiMV em alface foi extremamente baixa e restrita ¨¤s regi es de Campinas e Bauru, onde tamb¨¦m foi verificado em plantas invasoras como Bidens pilosa e Galinsoga parviflora. Esta ultima ¨¦ hospedeira dos tr¨ºs v¨ªrus. Among the phytosanitary problems affecting lettuce culture are the diseases caused by viruses. Three viruses cause almost indistinguishable mosaic symptoms: Lettuce mosaic virus (LMV, Potyvirus), Lettuce mottle virus (LeMoV, Sequivirus) and Bidens mosaic virus (BiMV, Potyvirus). By RT-PCR using specific primers for each virus, lettuce and weed samples, preferably with mosaic symptoms, and collected from lettuce fields in the regions of Mogi das Cruzes, Campinas and Bauru, S o Paulo State, Brazil, were analyzed for the presence of these viruses. LeMoV was the most frequently found virus, followed by LMV. The occurrence of BiMV in lettuce was extremely low and restricted to the regions of Campinas and Bauru, where it was also found in weeds such as Bidens pilosa and Galinsoga parviflora. The latter plant is the host of these three viruses.
%K LMV
%K LeMoV
%K BiMV
%K LMV
%K LeMoV
%K BiMV
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052012000300012