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This research aims to identify the pathogen responsible for leaf spot and shoot dieback in Ligustrum japonicum in China.

February 6, 2026Plant Disease

First report of leaf spot and shoot dieback of Ligustrum japonicum caused by Botryosphaeria dothidea in China

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Observations reveal Botryosphaeria dothidea causes leaf spot in Ligustrum japonicum, indicating a new threat to this ornamental plant.

This research aims to identify the pathogen responsible for leaf spot and shoot dieback in Ligustrum japonicum in China.
Observed leaf spot outbreak in Ligustrum japonicum in Baihe Wetland Park, China.
Isolated fungal pathogens from symptomatic tissue on potato dextrose agar plates.
Conducted molecular identification using rDNA and phylogenetic analysis of fungal isolates.
Performed pathogenicity experiments using conidial suspensions on healthy seedlings.
Identified Botryosphaeria dothidea as the causal agent of leaf spots and shoot dieback.
Outbreak displayed up to 29% disease incidence among surveyed plants.
All inoculated seedlings showed symptoms of disease while control plants remained healthy.

Wang et al. (2026) studied this question.

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