Genetic characterization of Sri Lanka cassava mosaic virus infecting cassava in Vietnam

Abstract

Cassava mosaic disease, causes by Geminiviridae family, is one of ten most importance plant viral diseases that causes heavy economic loss in crop industry all around the world. In this study, we successfully detected SLCMV from the cassava leaves with typical cassava mosaic disease collected from Tay Ninh, Ninh Thuan, Dong Nai, Ba Ria-Vung Tau, and Ho Chi Minh City. Genetic characterization of the genome A and genome B revealed that the studied SLCMV strains shared the highest nucleotide and amino acid identity each others and shared closely relationship with the SLCMV strains isolated in Sri Lanka, India, Cambodia, and China, suggesting that these strains shared common ancestor. The results also suggested that the circulating SLCMV in Vietnam may infected from SLCMV isolated in one of those contries, especially Cambodia where sharing the border with Vietnam. These results provided important information on the biological and molecular characterization of the circulating SLCMV in Vietnam, as well as the evident for control and predict the circulation of SLCMV in future.