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May 9, 2026Plant Disease

First Report of Neocosmospora Stem Rot of Soybean Caused by Fusarium neocomosporiellum in Missouri

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Authors

AHAlexandria HaafkeJAJéssica ArgentaJSJenish Simon

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Overview

Randomized trial confirms Neocosmospora stem rot caused by Fusarium neocomosporiellum in soybean, indicating potential threat to crops.

Key Points

  • This research aimed to confirm the presence of Fusarium neocomosporiellum as the cause of stem rot in soybean plants in Missouri and establish its disease impact.
  • Soybean plants exhibiting symptoms were collected from a research center in Missouri.
  • Fusarium neocomosporiellum was cultured and used to inoculate soybean seedlings under controlled greenhouse conditions.
  • Koch’s postulates were completed to confirm the pathogen's role in causing disease.
  • Non-inoculated plants remained healthy, while inoculated plants showed stem browning after four weeks.
  • Perithecia resembling the pathogen developed on symptomatic stems after re-isolation processes were performed.
  • This report marks the first identification of F. neocomosporiellum causing Neocosmospora stem rot in Missouri.

Cite This Study

Haafke et al. (2026) studied this question.

synapsesocial.com/papers/69fed0abb9154b0b82877cb4https://doi.org/10.1094/pdis-01-26-0235-pdn
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1First Report of Soybean Root Rot Caused by <i>Fusarium falciforme</i> in the Republic of Korea2024 · 4 citations
  2. 2First Report of Red Crown Rot of Soybean ( <i>Glycine max</i> ), Caused by <i>Calonectria ilicicola</i> , in Wisconsin2026
  3. 3First Report of Red Crown Rot of Soybean Caused by <i>Calonectria ilicicola</i> in Minnesota2026
  4. 4First report of <i>Diaporthe pseudooculi</i> causing stem and pod blight disease of soybean in South Korea2026
  5. 5First Report of <i>Neocosmospora pisi</i> (syn. <i>Fusarium vanettenii</i> ) Causing Root Rot on <i>Astragalus membranaceus</i> in China2026