Pesticides Chemistry and Toxicology Department, Faculty of Agriculture, Kafrelsheikh University, Kafr Elsheikh, Egypt.
Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt.
Pest Manag Sci. 2022 Aug;78(8):3587-3595. doi: 10.1002/ps.7001. Epub 2022 Jun 10.
Zucchini yellow mosaic virus (ZYMV) infects cucurbits and has been identified as a major limiting factor in their production. The purpose of this study was to create copper oxide nanostructures (CONS) to control ZYMV in squash plants. Protection of squash against ZYMV was assessed in terms of virus severity, ZYMV concentration, transcription of pathogenesis-related genes and growth enhancement of treated squash.
The findings revealed that squash plants treated with CONS had a significant reduction in disease severity when compared with untreated plants. In squash plants treated with CONS, defense genes associated with the salicylic acid signaling pathway were strongly expressed compared with untreated plants. The structural characteristics of CONS, such as their small size and appropriate shape, added to their excellent anti-ZYMV efficacy. CONS-treated squash plants show significantly improved growth traits compared with untreated plants.
Based on the results of this study, CONS may be a new strategy for the control of ZYMV in squash. This represents an unconventional solution to control this virus, particularly as no chemical pesticides can control viral diseases. © 2022 Society of Chemical Industry.
南瓜黄花叶病毒（ZYMV）感染葫芦科植物，是其生产的主要限制因素。本研究旨在制备氧化铜纳米结构（CONS）来控制南瓜中的 ZYMV。通过病毒严重程度、ZYMV 浓度、与发病相关的基因转录以及处理后的南瓜生长增强来评估南瓜对 ZYMV 的保护。
研究结果表明，与未处理的植物相比，用 CONS 处理的南瓜植物的疾病严重程度显著降低。与未处理的植物相比，用 CONS 处理的南瓜中与水杨酸信号通路相关的防御基因表达强烈。CONS 的结构特征，如小尺寸和适当的形状，增强了其对 ZYMV 的优异防治效果。与未处理的植物相比，用 CONS 处理的南瓜植物的生长特性显著提高。
根据本研究的结果，CONS 可能是防治南瓜中 ZYMV 的一种新策略。这代表了一种控制这种病毒的非传统方法，特别是因为没有化学农药可以控制病毒性疾病。 © 2022 英国化学学会。
