What question did this study set out to answer?

To identify Neocosmospora ipomoeae as the pathogen responsible for root rot in Panax notoginseng.

August 5, 2026Plant Disease

First report of Neocosmospora ipomoeae causing root rot on Panax notoginseng in Wenshan, China

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Randomized trial demonstrates root rot caused by Neocosmospora ipomoeae in Panax notoginseng, indicating a need for management strategies.

To identify Neocosmospora ipomoeae as the pathogen responsible for root rot in Panax notoginseng.
Isolated pathogens from symptomatic roots of diseased plants and conducted pathogenicity tests.
Used morphological and molecular techniques for identification, including TEF1, rpb2, and ITS gene sequencing.
Inoculated one-year-old Panax notoginseng plants with conidial suspensions and observed symptom development.
Disease incidence observed was approximately 10% in the affected planting area.
Identified strain LHGF12-3 showed 99.9% identity with Neocosmospora ipomoeae sequences in GenBank.
Inoculated plants developed root rot symptoms, confirming strain pathogenicity.

Long et al. (2026) studied this question.

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Randomized trial demonstrates root rot caused by Neocosmospora ipomoeae in Panax notoginseng, indicating a need for management strategies.