In nature, plant pathogens often rely on insect vectors for transmission. Through long-term evolution, plant pathogens and insect vectors have established a mutually beneficial symbiotic relationship. Fire blight, caused by the Gram-negative bacterium Erwinia amylovora (Eam), poses a significant global threat to apple and pear production due to its rapid dissemination among host plants of the Rosaceae family. Despite evidence of E. amylovora transmission by various insects, the association between this pathogen and the pear psylla Cacopsylla chinensis, a common vector insect in pear orchards, remains unclear.

中文翻译：

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火疫病病原体 Erwinia amylovora 对幼年激素信号的操纵介导了梨木虱的繁殖力增强


在自然界中，植物病原体通常依靠昆虫媒介进行传播。通过长期进化，植物病原体和昆虫媒介建立了互惠互利的共生关系。由革兰氏阴性菌 Erwinia amylovora （Eam） 引起的火疫病，由于其在蔷薇科寄主植物中的快速传播，对苹果和梨的生产构成了重大的全球威胁。尽管有证据表明 E. amylovora 通过各种昆虫传播，但这种病原体与梨木虱 Cacopsylla chinensis（梨园中常见的媒介昆虫）之间的关联仍不清楚。