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Abstract
Pinus bungeana is a rare and endangered plant in China with high ornamental value. In September 2022, P. bungeana shoot blight was discovered in Changzhou, Jiangsu, China. This disease led to the chlorosis, withering and death of the stems and needles of shoot tips of the host. It seriously affected the growth of plants. The fungus was identified to be Diplodia sapinea, based on morphological characteristics and multilocus phylogenetic analyses of ITS region (the internal transcribed spacer) and EF gene (elongation factor 1-alpha). The pathogenicity test was carried out by inoculating the tips of the shoots using conidial suspension, and the Koch's postulates were confirmed. This is the first report of P. bungeana blight caused by D. sapinea in the world.
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