Schulz Lindsay, Popova Inna, Dandurand Louise-Marie
Department of Entomology, Plant Pathology, and Nematology, University of Idaho, Moscow, ID 83844.
Department of Soil Science, University of Wisconsin-Madison, Madison, WI 53706.
J Nematol. 2024 Aug 8;56(1):20240027. doi: 10.2478/jofnem-2024-0027. eCollection 2024 Mar.
, the pale cyst nematode, is a quarantined potato pest first found in Idaho in 2006. The containment and eradication of this economically devastating pest has been the focus of control since its discovery. survives for 30+ years in soil and can cause up to 80% yield loss in susceptible potato varieties. Soil fumigants have been key to eradication efforts but many have been banned. Therefore, new control methods are needed. induces hatching but limits reproduction and can be used as an alternative control measure. However, as has little economic value as a crop and its seeds are largely unavailable, it has not been widely adopted by potato producers. There is evidence that this plant kills the nematode by producing toxins, although this is poorly understood. Liquid-liquid extraction of leaf and stem tissues by hexane and 1-butanol reduced hatch by 49.5%, and 68.3%, respectively, compared with the potato root diffusate control. Many chemicals may be responsible for this toxic effect, including steroidal glycoalkaloids produced by plants in the Solanaceae family. The discovery of novel chemistries for nematicide development would be valuable for potato cyst nematode control.
马铃薯白线虫是一种检疫性马铃薯害虫，2006年首次在爱达荷州被发现。自发现以来，控制和根除这种对经济有毁灭性影响的害虫一直是防治工作的重点。它在土壤中能存活30多年，可导致易感马铃薯品种减产高达80%。土壤熏蒸剂一直是根除工作的关键，但许多已被禁止使用。因此，需要新的防治方法。某植物诱导孵化但限制繁殖，可作为一种替代防治措施。然而，由于该植物作为作物几乎没有经济价值且其种子大多无法获取，它尚未被马铃薯种植者广泛采用。有证据表明这种植物通过产生毒素杀死线虫，尽管对此了解甚少。与马铃薯根渗出液对照相比，用己烷和1-丁醇对该植物叶和茎组织进行液-液萃取分别使孵化率降低了49.5%和68.3%。许多化学物质可能导致这种毒性作用，包括茄科植物产生的甾体糖苷生物碱。发现用于杀线虫剂开发的新化学物质对防治马铃薯孢囊线虫将具有重要价值。
