Institute of Food and Agricultural Technology-XaRTA-CIDSAV, University of Girona, Girona, 17003, Spain.
Phytopathology. 2022 Sep;112(9):1907-1916. doi: 10.1094/PHYTO-12-21-0525-R. Epub 2022 Aug 8.
is a plant pathogenic bacterium that has been introduced in the European Union (EU), causing significant yield losses in economically important Mediterranean crops. Almond leaf scorch (ALS) is currently one of the most relevant diseases observed in Spain, and no cure has been found to be effective for this disease. In previous reports, the peptide BP178 has shown a strong bactericidal activity in vitro against and to other plant pathogens, and to trigger defense responses in tomato plants. In the present work, BP178 was applied by endotherapy to almond plants of cultivar Avijor using preventive and curative strategies. The capacity of BP178 to reduce the population levels of and to decrease disease symptoms and its persistence over time were demonstrated under greenhouse conditions. The most effective treatment consisted of a combination of preventive and curative applications, and the peptide was detected in the stem up to 60 days posttreatment. Priming plants with BP178 induced defense responses mainly through the salicylic acid pathway, but also overexpressed some genes of the jasmonic acid and ethylene pathways. It is concluded that the bifunctional peptide is a promising candidate to be further developed to manage ALS caused by .[Formula: see text] Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
是一种植物病原细菌，已引入欧盟（EU），对地中海地区具有重要经济价值的作物造成了重大产量损失。杏仁叶枯病（ALS）是目前在西班牙观察到的最相关疾病之一，目前尚无有效的治疗方法。在之前的报告中，肽 BP178 表现出对 和其他植物病原体的强烈杀菌活性，并在番茄植物中引发防御反应。在本工作中，BP178 通过内疗法应用于杏仁品种 Avijor 的植株，采用预防和治疗策略。在温室条件下证明了 BP178 降低 种群水平、减少疾病症状及其随时间持续存在的能力。最有效的治疗方法包括预防和治疗联合应用，肽在处理后 60 天内在茎中仍可检测到。用 BP178 对植物进行激发诱导了主要通过水杨酸途径的防御反应，但也过表达了茉莉酸和乙烯途径的一些基因。结论是，双功能肽是一种很有前途的候选物，可以进一步开发用于管理由 引起的 ALS。
