Composition of Essential Oil of Cinnamomum tetragonum

Đài, Đỗ Ngọc; Lam, Nguyen Tien; Cuong, Nguyen Tien; Ngan, Truong Quang; Truong, Nguyen Cong; Ogunwande, Isiaka A.

doi:10.1007/s10600-020-03086-z

Cited by 2 publications

(1 citation statement)

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“…This requires research into new and more active molecules, such as essential oils, their main compounds, and plant extracts. Among others, 1,8-cineole (eucalyptol), a monoterpene cyclic ether, which was used in this study, is commonly found in many plants with essential oils, such as plants belonging to the genera Rosmarinus , Eucalyptus , Cinnamomum, and Laurus [ 32 , 33 , 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Treatment with Glyphosate Induces Tolerance of Citrus Pathogens to Glyphosate and Fungicides but Not to 1,8-Cineole

et al. 2022

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During the postharvest period, citrus fruits are exposed to Penicillium italicum, Penicillium digitatum, and Geotrichum candidum. Pesticides such as imazalil (IMZ), thiabendazole (TBZ), orthophenylphenol (OPP), and guazatine (GUA) are commonly used as antifungals. Glyphosate (GP) is also used in citrus fields to eliminate weed growth. The sensitivity of fungal pathogens of citrus fruit to these pesticides and 1,8-cineole was evaluated, and the effect of GP on the development of cross-resistance to other chemicals was monitored over a period of 3 weeks. IMZ most effectively inhibited the mycelial growth and spore germination of P. digitatum and P. italicum, with minimum inhibitory concentrations (MICs) of 0.01 and 0.05 mg/mL, respectively, followed by 1,8-cineole, GP, and TBZ. 1,8-Cineole and GP more effectively inhibited the mycelial growth and spore germination of G. candidum, with minimum inhibitory concentrations (MICs) of 0.2 and 1.0 mg/mL, respectively, than OPP or GUA. For the spore germination assay, all substances tested showed a total inhibitory effect. Subculturing the fungal strains in culture media containing increasing concentrations of GP induced fungal tolerance to GP as well as to the fungicides. In soil, experiments confirmed that GP induced the tolerance of P. digitatum to TBZ and GP and the tolerance of P. italicum to IMZ, TBZ, and GP. However, no tolerance was recorded against 1,8-cineole. In conclusion, it can be said that 1,8-cineole may be recommended as an alternative to conventional fungicides. In addition, these results indicate that caution should be taken when using GP in citrus fields.

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