Department of Entomology, Plant Pathology, and Nematology, University of Idaho, Moscow, ID.
Department of Entomology, Plant Pathology, and Nematology, and Kimberly Research and Extension Center, University of Idaho, Kimberly, ID.
Environ Entomol. 2021 Apr 23;50(2):382-389. doi: 10.1093/ee/nvaa179.
Zebra chip, is a potato disease associated with the bacterium 'Candidatus Liberibacter solanacearum' (Lso) and vectored by the potato psyllid, Bactericera cockerelli Šulc. Potato psyllids are native to North America, where four haplotypes have been described. They are able to colonize a wide range of solanaceous species, crops, and weeds. The epidemiology of zebra chip disease is still poorly understood and might involve the different haplotypes of psyllids as well as two haplotypes of Lso. As several perennial weeds have been recognized as potential host for potato psyllids and Lso, a yearly monitoring of several patches of bittersweet nightshade (Solanum dulcamara) and field bindweed (Convolvulus arvensis) located in the potato-growing region of southern Idaho was conducted from 2013 to 2017, to gain insight into psyllid dynamics in non-potato hosts and Lso presence in the fields. Potato psyllids caught on each host were individually tested for Lso, and a subset were haplotyped based on the CO1 gene, along with the haplotyping of Lso in positive samples. On bittersweet nightshade, the Northwestern haplotype was numerically dominant, with around 2.7% of psyllids found to be carrying either Lso haplotype A or B, suggesting a limited role in zebra chip persistence, which has infected Idaho fields at a low occurrence since the 2012 outbreak. Field bindweed was found to be a transient, non-overwintering host for potato psyllid of Northwestern, Western and Central haplotypes late in the season, suggesting minor, if any, role in persistence of Lso and field infestation by potato psyllids.
斑马纹病是一种与细菌“韧皮部杆菌属韧皮部溃疡病菌”（Lso）相关的马铃薯病害，由马铃薯木虱，Bactericera cockerelli Šulc 传播。马铃薯木虱原产于北美，那里已经描述了四个单倍型。它们能够在广泛的茄科物种、作物和杂草中定殖。斑马纹病的流行病学仍然知之甚少，可能涉及不同的木虱单倍型以及两种 Lso 单倍型。由于几种多年生杂草已被认为是马铃薯木虱和 Lso 的潜在宿主，因此 2013 年至 2017 年在爱达荷州南部马铃薯种植区对苦茄（Solanum dulcamara）和田旋花（Convolvulus arvensis）的几个斑块进行了每年监测，以了解非马铃薯宿主中的木虱动态和田间 Lso 的存在情况。在每个宿主上捕获的马铃薯木虱都单独进行了 Lso 检测，部分根据 CO1 基因进行了单倍型分析，并对阳性样本中的 Lso 进行了单倍型分析。在苦茄上，西北单倍型在数量上占优势，约有 2.7%的木虱携带 Lso 单倍型 A 或 B，这表明其在斑马纹病持续存在中的作用有限，自 2012 年爆发以来，这种病已经在爱达荷州的田地中低频率发生。田间发现西北、西部和中部单倍型的马铃薯木虱在季节后期是临时的、非越冬的苦茄宿主，这表明 Lso 和马铃薯木虱田间感染的持续存在作用很小，如果有的话。
