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<p>In April 2025 in Kamphaeng Phet Province, we collected mung bean (<i>Vigna radiata</i>) plants with yellow mosaic symptoms like those caused by mungbean yellow mosaic India virus (MYMIV), a bipartite begomovirus transmitted by whiteflies (<i>Bemisia tabaci</i>) that had not yet been reported in Thailand. Molecular phylogenetic analysis of a partial DNA-A region showed that our Thai isolates formed a distinct clade with Indian and Indonesian MYMIV isolates. A whitefly transmission assay confirmed infectivity; characteristic symptoms developed on plants within 20 to 25 days. This is the first report of MYMIV-like virus in Thailand and highlights its potential threat.</p>

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First report of a begomovirus closely related to mungbean yellow mosaic India virus (MYMIV) in mung bean (Vigna radiata) in Thailand

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Khomkrit Jenjai,
  • Athidtaya Kumvinit,
  • Mongkol Sratongjun,
  • Milan C. Samarakoon

摘要

In April 2025 in Kamphaeng Phet Province, we collected mung bean (Vigna radiata) plants with yellow mosaic symptoms like those caused by mungbean yellow mosaic India virus (MYMIV), a bipartite begomovirus transmitted by whiteflies (Bemisia tabaci) that had not yet been reported in Thailand. Molecular phylogenetic analysis of a partial DNA-A region showed that our Thai isolates formed a distinct clade with Indian and Indonesian MYMIV isolates. A whitefly transmission assay confirmed infectivity; characteristic symptoms developed on plants within 20 to 25 days. This is the first report of MYMIV-like virus in Thailand and highlights its potential threat.