Resumo

BERMUDEZ-GUZMAN, Manuel de Jesús et al. Detection of Sugarcane mosaic virus (SCMV) in Saccharum spp. in Mexico and phylogenetic origin of one isolate from Jalisco. Rev. mex. fitopatol [online]. 2018, vol.36, n.1, pp.16-34. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.1709-2.

Sugarcane mosaic virus (SCMV) is one of the main viral agents that infect sugarcane (Saccharum spp.). SCMV detection in Mexico has been based on typical symptomatology of the disease, which is not conclusive. Additionally, there is limited information about their phylogenetic origin. The objective of this work was to detect the presence and distribution of SCMV in the sugarcane growing areas of the Mexican Pacific using RT-PCR, and to determine the phylogenetic origin of one isolate from Jalisco. The results showed the wide distribution of SCMV in sugarcane areas of the Mexican Pacific. The virus was found in 33 of the 242 samples analyzed, corresponding to 13.63%. The varieties Mex 69-290 and CP 72-2086 presented the most severe mosaic symptoms. Phylogenetic analysis using partial HC-Pro sequences of SCMV isolate from Jalisco (JalMex-126) suggests a close relationship with isolates from India, Australia, China and Argentina, and thus likely share a common genetic origin and have been dispersed to through infected sugarcane germplasm.

Palavras-chave : sugarcane; virus; RNA; phylogeny.