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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (1): 66-72.doi: 10.16420/j.issn.0513-353x.2024-0108

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Analysis of the Diversity of Banana Streak Virus Infecting Bananas in South China Using Metagenomic Sequencing

CHEN Huazhou, LIU Runpei, LU Yongsi, RAO Xueqin*()   

  1. College of Plant Protection,South China Agricultural University,Guangdong Province Key Laboratory of Microbial Signals and Disease Control,Guangzhou 510642,China
  • Received:2024-10-15 Revised:2024-11-27 Online:2025-01-25 Published:2025-01-18
  • Contact: RAO Xueqin

Abstract:

Macrogenomic sequencing was used to analyze virus infecting bananas in South China,and 16 different viruses were found,most of them belonging to the genus Badnavirus of the family Caulimoviridae. Among these,seven were banana streak virus(BSV). To confirm the findings of macrogenomic sequencing,immunocaptured PCR(IC-PCR)was used. The results indicated that five BSVs were identified,namely banana streak OL virus(BSOLV),banana streak GF virus(BSGFV),banana streak MY virus(BSMYV),banana streak IM virus(BSIMV),and banana streak VN virus(BSVNV). The nucleotide sequences of these viruses amplified by IC-PCR showed greater than 93% identity with the corresponding viral sequences in GenBank. Phylogenetic tree analysis revealed that these BSVs belonged to Clade I and were episomal. Additionally,BSOLV,BSGFV,BSMYV,BSIMV,and BSVNV were detected in 41 banana samples from Guangdong by IC-PCR,and BSOLV was identified as the dominant BSV.

Key words: banana, Badnavirus, banana streak virus, metagenomic sequencing