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Inhibitory activities of essential oils from Syzygium aromaticum inhibition of Echinochloa crus-galli.
In: PLoS ONE, Jg. 19 (2024-06-21), Heft 6, S. 1-15
Online
academicJournal
Zugriff:
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. [ABSTRACT FROM AUTHOR]
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Inhibitory activities of essential oils from Syzygium aromaticum inhibition of Echinochloa crus-galli.
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Autor/in / Beteiligte Person: | Ni, Xianzhi ; Bai, Haodong ; Han, Jincai ; Zhou, Yong ; Bai, Zhendong ; Luo, Siquan ; Xu, Jingjing ; Jin, Chenzhong ; Li, Zuren |
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Zeitschrift: | PLoS ONE, Jg. 19 (2024-06-21), Heft 6, S. 1-15 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1932-6203 (print) |
DOI: | 10.1371/journal.pone.0304863 |
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