Faculty of Life Sciences Bar Ilan University, Ramat Gan, Israel.
Department of Chemistry Bar Ilan University, Ramat Gan, Israel.
Pest Manag Sci. 2023 Mar;79(3):1102-1112. doi: 10.1002/ps.7280. Epub 2022 Nov 22.
Oxathiapiprolin (OXPT; FRAC code 49) is a new piperidinyl-thiazole isooxazoline anti-oomycete fungicide that targets oxysterol-binding proteins. The fungicide is known to translocate acropetally from root to shoot to protect plants against fungal attack.
OXPT is ambimobile. It can also translocate basipetally from shoot to root. OXPT exhibits an unprecedented capacity for trans-plant protection. When two tomato plants are grown in one pot, and one is treated with OXPT (on the stem, leaves or apex), while the other plant and soil surface are adequately covered, both plants become protected against late blight caused by Phytophthora infestans.
Trans-plant systemic protection induced by OXPT involves translocation of the fungicide from the shoot of the treated plant to its root, exudation into the soil and uptake by the root of the neighboring untreated plant to protect it against the disease. Liquid chromatography-tandem mass spectrometry analyses confirmed the occurrence of OXPT in root exudates of OXPT-treated tomato plants in quantities sufficient to protect detached tomato leaves and intact plants against P. infestans. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
唑吡坦（OXPT；FRAC 代码 49）是一种新型的哌啶基噻唑异噁唑啉类杀卵菌剂，作用靶点是甾醇结合蛋白。该杀菌剂从根部向顶部转移，从而保护植物免受真菌攻击，这是已知的。
OXPT 具有双向传导性。它也可以从顶部向根部向下传导。OXPT 表现出前所未有的跨植物保护能力。当两株番茄植物种植在一个盆中，一株用 OXPT（在茎、叶或顶端）处理，而另一株植物和土壤表面都得到充分覆盖时，两株植物都能免受由致病疫霉引起的晚疫病的侵害。
OXPT 诱导的跨植物系统性保护涉及到杀菌剂从处理植物的顶部向其根部转移、分泌到土壤中以及被未处理的相邻植物根部吸收，从而保护其免受疾病侵害。液质联用分析证实，在施用过 OXPT 的番茄植物的根部分泌物中存在 OXPT，其数量足以保护离体番茄叶片和完整植物免受致病疫霉的侵害。© 2022 作者。害虫管理科学由 John Wiley & Sons Ltd 代表化学工业协会出版。
