Genomic diversity of Capillovirus uniheveae (Betaflexiviridae) infecting Hevea brasiliensis Muell. Arg. in Hainan, China

RTV1 was identified in approximately 50% of samples with TPD syndrome collected in Hainan, China, with phylogroup A being the most prevalent. Considerable variations were observed in RTV1 nucleotide sequences among different phylogroups. These findings lay a foundation for accurate diagnostics, etiological characterization, and elucidation of the evolutionary relationships of RTV1 populations, providing a strong guarantee for obtaining virus-free rubber tree seedlings, and promoting the healthy and sustainable development of rubber tree plantations.