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First report of Diaporthe pseudooculi causing stem and pod blight disease of soybean in South Korea

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Randomized trial demonstrates stem and pod blight in soybean, indicating the emergence of a new pathogen in South Korea.

To report the identification of Diaporthe pseudooculi causing stem and pod blight disease in soybean in South Korea.
64 soybean samples were collected showing symptoms of disease from different regions in South Korea.
Isolate NS_72354 was identified through morphological and molecular analysis, including PCR and phylogenetic analysis.
Pathogenicity tests were conducted through stem and pod inoculations on soybean seedlings and pods.
Symptoms appeared in inoculated seedlings 4 days post-inoculation, while control plants exhibited no symptoms.
Inoculated pods were fully colonized by day 21, with control pods remaining asymptomatic.
Molecular methods confirmed the pathogen D. pseudooculi, linking it as an emerging threat to soybean.

Dinsa et al. (2026) studied this question.

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View Full Paper

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Authors

Randomized trial demonstrates stem and pod blight in soybean, indicating the emergence of a new pathogen in South Korea.

To report the identification of Diaporthe pseudooculi causing stem and pod blight disease in soybean in South Korea.
64 soybean samples were collected showing symptoms of disease from different regions in South Korea.
Isolate NS_72354 was identified through morphological and molecular analysis, including PCR and phylogenetic analysis.
Pathogenicity tests were conducted through stem and pod inoculations on soybean seedlings and pods.
Symptoms appeared in inoculated seedlings 4 days post-inoculation, while control plants exhibited no symptoms.
Inoculated pods were fully colonized by day 21, with control pods remaining asymptomatic.
Molecular methods confirmed the pathogen D. pseudooculi, linking it as an emerging threat to soybean.

Dinsa et al. (2026) studied this question.

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