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This research aims to identify and classify the causative fungus behind leaf spot symptoms on Cathaya argyrophylla in China.

First report of leaf spot disease in Cathaya argyrophylla Caused by Diaporthe eres in China

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Randomized trial demonstrates leaf spot disease in Cathaya argyrophylla, indicating potential impacts on plant health.

This research aims to identify and classify the causative fungus behind leaf spot symptoms on Cathaya argyrophylla in China.
Conducted field observations in Dashahe National Nature Reserve, Guizhou Province.
Isolated and identified Diaporthe eres from infected leaves using molecular techniques.
Performed pathogenicity tests on C. argyrophylla plants to demonstrate symptoms.
217 out of 866 observed trees showed leaf spot symptoms, resulting in a disease incidence rate of approximately 25%.
Confirmed the pathogen as Diaporthe eres through morphological and molecular methods, including ITS and TEF1 sequences.
Inoculated plants exhibited symptoms consistent with field observations after 14 days, fulfilling Koch's postulates.

Yang et al. (2026) studied this question.

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