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<p>Rust symptoms were observed in the matured leaves of <i>Xanthium strumarium</i> L. plants near paddy fields in the Chengalpattu district of Tamil Nadu, India. The teliospores were observed under microscope and their morphological characters were studied. To further confirm the identity of the pathogen, the spores were collected in sterile distilled water and DNA was extracted using CTAB method. The phylogeny analysis revealed that the pathogen observed was <i>Puccinia xanthii</i> Schw. The pathogen was closely related to other isolates of <i>Puccina xanthii</i> Schw. reported from <i>X. oriantale</i> from Okcheon-gun, Korea. This is the first report of <i>Puccinia xanthii</i> Schw. in <i>Xanthium strumarium</i> L. reported in India.</p>

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First report of Puccinia xanthii Schw. causing rust on Xanthium strumarium L. in India

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Rageshwari Selvaraj,
  • Rajasulochana Nallan,
  • Sundar Manavalan,
  • Vinod Kumar Selvaraj

摘要

Rust symptoms were observed in the matured leaves of Xanthium strumarium L. plants near paddy fields in the Chengalpattu district of Tamil Nadu, India. The teliospores were observed under microscope and their morphological characters were studied. To further confirm the identity of the pathogen, the spores were collected in sterile distilled water and DNA was extracted using CTAB method. The phylogeny analysis revealed that the pathogen observed was Puccinia xanthii Schw. The pathogen was closely related to other isolates of Puccina xanthii Schw. reported from X. oriantale from Okcheon-gun, Korea. This is the first report of Puccinia xanthii Schw. in Xanthium strumarium L. reported in India.