College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
Engineering and Technology Centers of Biopesticide in Shaanxi, Yangling, Shaanxi 712100, China.
Plant Dis. 2023 Jul;107(7):2144-2152. doi: 10.1094/PDIS-09-22-2246-RE. Epub 2023 Jul 16.
The essential oil of is the most widely consumed and used spice in the world today. It has therapeutic effects in medicine and has been shown to have good antibacterial and bacteriostatic effects in agriculture. This study found that oil significantly induced plant disease resistance activity. Linalool, its main active component, significantly induced plant disease resistance activity (67.49% at a concentration of 800 μg/ml) over the same concentration of the chitosan oligosaccharide positive control but had no direct effect on tobacco mosaic virus (TMV). In this study of its antiviral mechanism, linalool induced hypersensitive reaction (HR); the overexpression of related defense enzymes SOD, CAT, POD, and PAL; and the accumulation of HO and SA content in . Besides, linalool induced crops resistance against , , , and . Taken together, the anti-TMV mechanism of linalool involved the induction of plant disease resistance through activation of a plant immune response mediated by salicylic acid. Linalool-induced plant disease resistance activity has a long duration, broad spectrum, and rich resources; linalool thus has the potential to be developed as a new plant-derived antiviral agent and plant immune activator.
是当今世界上使用最广泛的香料之一。它在医学上具有治疗作用，并且在农业上已被证明具有良好的抗菌和抑菌作用。本研究发现，油显著诱导植物抗病活性。其主要活性成分芳樟醇在相同浓度的壳寡糖阳性对照物下，显著诱导植物抗病活性（浓度为 800μg/ml 时为 67.49%），但对烟草花叶病毒（TMV）没有直接作用。在本研究其抗病毒机制中，芳樟醇诱导过敏反应（HR）；相关防御酶 SOD、CAT、POD 和 PAL 的过表达；以及 HO 和 SA 含量在 中的积累。此外，芳樟醇诱导作物对 、 、 和 。综上所述，芳樟醇抗 TMV 的机制涉及通过激活水杨酸介导的植物免疫反应诱导植物抗病性。芳樟醇诱导的植物抗病活性具有作用时间长、谱广、资源丰富等特点；因此，芳樟醇具有开发为新型植物源抗病毒剂和植物免疫激活剂的潜力。
