Viruses infecting banana and their transgenic management
Ramasamy Selvarajan, Chelliah Anuradha, Velusamy Balasubramanian, Sivalingam Elayabalan and Kanicheluam Prasanya Selvam
from: Genes, Genetics and Transgenics for Virus Resistance in Plants (Edited by: Basavaprabhu L. Patil). Caister Academic Press, U.K. (2018) Pages: 255-276.
Viral pathogens cause serious diseases in banana and plantains leading to a greater loss on the production and productivity. Banana Bunchy Top disease, Banana Streak, Banana Bract Mosaic and Infectious chlorosis or Banana mosaic pose serious concern in banana cultivation across the world. BBTV infection can result into 100% yield loss whereas other three diseases cause ca. 9 -70% yield loss. Breeding for virus disease resistance is not attempted probably owing to lack of resistance source, inherent problem in Musa due to sterility, parthenocarpic nature and compatibility. At present the management is mainly through timely identification of the diseased plants and eradication, and supply of certified virus free quality planting material to the farmers. Transgenic approaches have been attempted in a few labs across the world and came out with promising results for BBTV resistance but for other viruses attempts were not yet made. Transgenic resistance lines using RNAi has been developed for BBTV successfully but field level release and deployment in the farmers field is yet to take place. Multiple virus resistance targeting the suppressor of gene silencing with RNAi strategy is being attempted at ICAR-National Research Centre on Banana (ICAR-NRCB). CRISPR-Cas9 approach of genome editing for resistance and removal of eBSVs are the future goals of banana virologists to achieve the better management through molecular approaches. In this paper, we have reviewed and discussed about the important viruses of banana and transgenic management of them read more ...