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Abstract <p>A blighted-like symptom on wild pigeonpea (<i>C. scarabaeoides</i>) was observed during 2023-24 at ICAR-Indian Institute of Pulses Research (IIPR), Kanpur, India. Alterneria blight-infected wild pigeonpea leaf and stem samples were collected from the infected wild pigeonpea accession <i>C. scarabaeoides</i> to isolate, identify, and characterize the pathogen causing a huge loss. Pathogenicity confirmed on cultivar <i>C. scarabaeoides </i> to confirm the aggressiveness of the pathogen. Further, molecular characterization was done by using the internal transcribed spacer (ITS) region. The phylogenetic tree based on rDNA ITS analysis showed that the <i>Alternaria alternata</i> causing Alternaria blight in wild pigeonpea (<i>C. scarabaeoides)</i> is very distinct from the other Alternaria isolate reported from different hosts. On the basis of available literature, this is the first report of molecular identification of <i>Alternaria alternata</i> causing Alternaria blight in wild pigeonpea (<i>C. scarabaeoides)</i> from India.</p>

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First report of Alterneria alternata causing leaf blight disease on wild derivatives of pigeon pea (C. scarabaeoides) from India

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Raj K. Mishra,
  • Sonika Pandey,
  • Abhishek Tiwari,
  • Abhishek Bohra

摘要

Abstract

A blighted-like symptom on wild pigeonpea (C. scarabaeoides) was observed during 2023-24 at ICAR-Indian Institute of Pulses Research (IIPR), Kanpur, India. Alterneria blight-infected wild pigeonpea leaf and stem samples were collected from the infected wild pigeonpea accession C. scarabaeoides to isolate, identify, and characterize the pathogen causing a huge loss. Pathogenicity confirmed on cultivar C. scarabaeoides to confirm the aggressiveness of the pathogen. Further, molecular characterization was done by using the internal transcribed spacer (ITS) region. The phylogenetic tree based on rDNA ITS analysis showed that the Alternaria alternata causing Alternaria blight in wild pigeonpea (C. scarabaeoides) is very distinct from the other Alternaria isolate reported from different hosts. On the basis of available literature, this is the first report of molecular identification of Alternaria alternata causing Alternaria blight in wild pigeonpea (C. scarabaeoides) from India.