First Insight into Genetic Variation and Population Structure of The Emerging Citrus chlorotic dwarf-associated virus (CCDaV, genus Citlodavirus)

Citrus spp. is widely planted in tropical and subtropical regions, including Turkey other Mediterranean countries. Due to its widespread vector climate change, chlorotic dwarf-associated virus (CCDaV), a member of the newly formed genus Citlodavirus, one emerging viruses that can be serious constraint crops production coming years. Therefore, in-silico analysis on all available isolates NCBI GenBank was performed provide first insight into genetic population evolution CCDaV, which may contribute control. CCDaV phylogroups based full genome, complete movement protein, coat protein sequences were found not associated with isolate origins or host species, also shared high identity among them. However, neutrality tests indicated current populations are expanding, driven by new mutations. Low Fixation index (FST) values (0.00000-0.36207) confirmed no separation different ORFs from three The constructed TimeTree suggested emergence very recent compared members Citlodavirus. obtained results this study could expand our knowledge even more obscure citladovirus plant DNA viruses, still less studied than RNA viruses.