| Autor: |
Liu L; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China., Sun Z; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China., Tang R; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China., Shi JH; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China., Zhang LQ; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China., Abdelnabby H; Department of Plant Protection, Faculty of Agriculture, Benha University, Banha, Qalyubia 13736, Egypt., Zhang A; Invasive Insect Biocontrol and Behavior Laboratory, Beltsville Agricultural Research Center-West, USDA, ARS, Beltsville, Maryland 20705-2350, United States., Wang MQ; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China. |
| Abstrakt: |
Mechanical stimuli can affect plant growth, development, and defenses. The role of water spray stimulation, as a prevalent mechanical stimulus in the environment, in crop growth and defense cannot be overlooked. In this study, the effects of water spray on tomato plant growth and defense against the chewing herbivore Helicoverpa armigera and necrotrophic fungus Botrytis cinerea were investigated. Suprathreshold water spray stimulus (LS) was found to enhance tomato plant defenses against pests and pathogens while concurrently modifying plant architecture. The results of the phytohormone and chemical metabolite analysis revealed that LS improved the plant defense response via jasmonic acid (JA) signaling. LS significantly elevated the level of a pivotal defensive metabolite, chlorogenic acid, and reduced the emissions of volatile organic compounds (VOCs) from tomato plants, thereby defending against pest and pathogen attacks. The most obvious finding to emerge from this study is that LS enhances tomato plant defenses against biotic stresses, which will pave the way for further work on the application of mechanical stimuli for pest management. |
