The potato psyllid, Bactericera cockerelli (Šulc), is a major pest of potato (Solanum tuberosum L.; Solanales: Solanaceae) as a vector of 'Candidatus Liberibacter solanacearum', the pathogen that causes zebra chip. Management of zebra chip is challenging in part because the noncrop sources of Liberibacter-infected psyllids arriving in potato remain unknown. Adding to this challenge is the occurrence of distinct genetic haplotypes of both potato psyllid and Liberibacter that differ in host range. Longleaf groundcherry (Physalis longifolia Nutt.) has been substantially overlooked in prior research as a potential noncrop source of Liberibacter-infected B. cockerelli colonizing fields of potato. The objective of this study was to assess the suitability of P. longifolia to the three common haplotypes of B. cockerelli (central, western, and northwestern haplotypes), and to two haplotypes of 'Ca. L. solanacearum' (Liberibacter A and B haplotypes). Greenhouse bioassays indicated that B. cockerelli of all three haplotypes produced more offspring on P. longifolia than on potato and preferred P. longifolia over potato during settling and egg-laying activities. Greenhouse and field trials showed that P. longifolia was also highly susceptible to Liberibacter. Additionally, we discovered that infected rhizomes survived winter and produced infected plants in late spring that could then be available for psyllid colonization and pathogen acquisition. Results show that P. longifolia is susceptible to both B. cockerelli and 'Ca. L. solanacearum' and must be considered as a potentially important source of infective B. cockerelli colonizing potato fields in the western United States.

中文翻译：

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长叶酸浆（茄属：茄科）对可卡氏杆菌（半翅目：三齿科）和‘青枯菌念珠菌’的敏感性

马铃薯木虱 Bactericera cockerelli (Šulc) 是马铃薯 (Solanum tuberosum L.；Solanales: Solanaceae) 的主要害虫，是引起斑马屑病的病原体“Candidatus Liberibacter solanacearum”的载体。斑马芯片的管理具有挑战性，部分原因是到达马铃薯的受 Liberibacter 感染的木虱的非作物来源仍然未知。增加这一挑战的是马铃薯木虱和 Liberibacter 在宿主范围上不同的不同遗传单倍型的出现。长叶地樱桃（Physalis longifolia Nutt.）在先前的研究中被严重忽视，因为它是受 Liberibacter 感染的 B. cockerelli 在马铃薯田中定殖的潜在非作物来源。本研究的目的是评估 P. longifolia 对 B. cockerelli（中部、西部、和西北单倍型），以及'Ca 的两种单倍型。L. solanacearum'（Liberibacter A 和 B 单倍型）。温室生物测定表明，所有三种单倍型的 B. cockerelli 在 P. longifolia 上产生的后代多于在马铃薯上产生的后代，并且在沉降和产卵活动中更喜欢 P. longifolia 而不是马铃薯。温室和田间试验表明 P. longifolia 也对 Liberibacter 高度敏感。此外，我们发现受感染的根茎在冬季存活并在晚春生产受感染的植物，然后可用于木虱定植和病原体获取。结果表明 P. longifolia 对 B. cockerelli 和 'Ca 均敏感。L. solanacearum' 并且必须被视为感染 B.