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September 10, 2025Plant Disease

First report of leaf blight caused by Alternaria tectorum on Pseudostellaria heterophylla in China

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The outbreak of leaf blight caused by Alternaria tectorum resulted in 70%-75% disease incidence in Pseudostellaria heterophylla.
Morphological and molecular analyses confirmed the identity of the pathogen, achieving 98.14 to 99.80% sequence identity to known A. tectorum.
Inoculation of healthy plants with A. tectorum isolates caused necrotic lesions similar to field symptoms, supporting its pathogenicity.
This first report highlights the need for management strategies for Alternaria tectorum on P. heterophylla to prevent economic losses.

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Observational analysis found 70%-75% leaf blight incidence on Pseudostellaria heterophylla, suggesting significant economic impacts.

Liu et al. (2025) studied this question.

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