Inhibitory activities of essential oils from Syzygium aromaticum inhibition of Echinochloa crus-galli.

Autor: Ni X; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China.; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Bai H; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China.; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Han J; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Zhou Y; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Bai Z; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China.; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Luo S; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China., Xu J; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China., Jin C; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China., Li Z; Hunan Provincial Key Laboratory for Biology and Control of Weeds, Collaborative Innovation Center for Field Weeds Control, Science and Technology, Hunan University of Humanities, Loudi, China.; Key Laboratory of Pesticide Assessment, Ministry of Agriculture and Rural Affairs, P.R. China, Hunan Academy of Agricultural Sciences, Changsha, China.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Jun 21; Vol. 19 (6), pp. e0304863. Date of Electronic Publication: 2024 Jun 21 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0304863
Abstrakt: Echinochloa crus-galli is a serious weed species in rice paddies. To obtain a new potential bioherbicide, we evaluated the inhibitory activities of 13 essential oils and their active substances against E. crus-galli. Essential oil from Syzygium aromaticum (L.) Merr. & L. M. Perry (SAEO) exhibited the highest herbicidal activity (EC50 = 3.87 mg mL-1) among the 13 essential oils evaluated. The SAEO was isolated at six different temperatures by vacuum fractional distillation, including 164°C, 165°C (SAEO-165), 169°C, 170°C 175°C and 180°C. The SAEO-165 had the highest inhibitory rate against E. crus-galli. Gas chromatography-mass spectrometry and high phase liquid chromatography identified eugenol (EC50 = 4.07 mg mL-1), α-caryophyllene (EC50 = 17.34 mg mL-1) and β-caryophyllene (EC50 = 96.66 mg mL-1) as the three compounds in SAEO. Results from a safety bioassay showed that the tolerance of rice seedling (~ 20% inhibition) was higher than that of E. crus-galli (~ 70% inhibition) under SAEO stress. SAEO induced excessive generation of reactive oxygen species leading to oxidative stress and ultimately tissue damage in E. crus-galli. Our results indicate that SAEO has a potential for development into a new selective bio-herbicide. They also provide an example of a sustainable management strategy for E. crus-galli in rice paddies.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Ni et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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