Are phytotoxic effects of Eucalyptus saligna (Myrtaceae) essential oil related to its major compounds?

2021 ◽  
Author(s):  
Eliane R. Silva ◽  
José M. Igartuburu ◽  
Gerhard E. Overbeck ◽  
Geraldo L. G. Soares ◽  
Francisco A. Macías
Keyword(s):  
Essential Oil ◽  
Eucalyptus Saligna ◽  
Phytotoxic Effects

Phytotoxic effects of extract and essential oil of Eucalyptus saligna (Myrtaceae) leaf litter on grassland species

2017 ◽  
Vol 65 (2) ◽  
pp. 172 ◽  
Author(s):  
Eliane R. Silva ◽  
Diana C. Lazarotto ◽  
Joséli Schwambach ◽  
Gerhard E. Overbeck ◽  
Geraldo L. G. Soares
Keyword(s):  
Essential Oil ◽  
Leaf Litter ◽  
Aqueous Extract ◽  
Seedling Growth ◽  
Electrolyte Leakage ◽  
Membrane Damage ◽  
Initial Growth ◽  
Eucalyptus Saligna ◽  
Allelopathic Potential ◽  
Grassland Species

Under Eucalyptus plantations in the South Brazilian grassland region, few plants establish, and allelopathy may be involved in shaping this pattern. We aimed to assess the phytotoxicity of essential oil and aqueous extract of Eucalyptus saligna Sm. leaf litter on grassland species. We tested the effects of E. saligna pure oil and extract on germination, seedling growth, H2O2 levels and electrolyte leakage of seedling membranes of Paspalum notatum Flüggé, Eragrostis plana Ness (Poaceae), Trifolium repens L. and Lotus corniculatus L. (Fabaceae). Essential oil and aqueous extract of E. saligna affected all recipient species, even at the lowest amounts/concentrations, inhibiting germination and initial growth, and also increasing H2O2 levels and electrolyte leakage of seedling membranes. Essential oil consisted mainly of monoterpenes and presented α-pinene and 1,8-cineole as the major compounds. The extract contained phenolics, and lower levels of these compounds in the extract were associated with decreased phytotoxicity. We conclude that E. saligna contains phytotoxic compounds in leaf litter that generate oxidative stress and lead to membrane damage, affecting seeds and seedling growth. In addition, we relate E. saligna phytotoxicity to monoterpenes that may be released from leaf litter by volatilisation, and phenolics that may be leached by rainfall. Our study indicates that E. saligna has allelopathic potential on the tested grassland species.

Phytotoxic effects of essential oil from Cymbopogon citratus and its physiological mechanisms on barnyardgrass (Echinochloa crus-galli)

2013 ◽  
Vol 41 ◽  
pp. 403-407 ◽  
Author(s):  
Tanatson Poonpaiboonpipat ◽  
Udomporn Pangnakorn ◽  
Umporn Suvunnamek ◽  
Montinee Teerarak ◽  
Patchanee Charoenying ◽  
...  
Keyword(s):  
Essential Oil ◽  
Cymbopogon Citratus ◽  
Physiological Mechanisms ◽  
Phytotoxic Effects

Phytotoxic effects of Salvia rosmarinus essential oil on Acacia saligna seedling growth

Flora ◽  
2020 ◽  
Vol 269 ◽  
pp. 151639
Author(s):  
Alfredo Maccioni ◽  
Andrea Santo ◽  
Danilo Falconieri ◽  
Alessandra Piras ◽  
Emmanuele Farris ◽  
...  
Keyword(s):  
Essential Oil ◽  
Seedling Growth ◽  
Acacia Saligna ◽  
Phytotoxic Effects

scholarly journals Phytotoxic Effects of Commercial Eucalyptus citriodora, Lavandula angustifolia, and Pinus sylvestris Essential Oils on Weeds, Crops, and Invasive Species

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2847 ◽  
Author(s):  
Ibáñez ◽  
Blázquez
Keyword(s):  
Invasive Species ◽  
Seed Germination ◽  
Essential Oil ◽  
Pinus Sylvestris ◽  
Essential Oils ◽  
In Vitro Assays ◽  
Eucalyptus Citriodora ◽  
Nicotiana Glauca ◽  
Lavandula Angustifolia ◽  
Phytotoxic Effects

Background: essential oils are well known for their pharmacological effectiveness as well as their repellent, insecticide, and herbicide activities. The emergence of resistant weeds, due to the overuse of synthetic herbicides, makes it necessary to find natural alternatives for weed control. The aim of this study was to evaluate the phytotoxic effects of Eucalyptus citriodora, Lavandula angustifolia, and Pinus sylvestris, three common commercial essential oils, on weeds (Portulaca oleracea, Lolium multiflorum, and Echinochloa crus-galli), food crops (tomato and cucumber), and the invasive species Nicotiana glauca. Methods: to determine herbicidal effects, essential oils were tested at different concentrations (0.125–1µL/mL). The index of germination and seedling length data were recorded over 14 days. Results: the in vitro assays showed that L. angustifolia with linalool (38.7 ± 0.1%), 1,8-cineole (26.5 ± 0.1%), and camphor (14.2 ± 0.1%) as the main compounds showed the most phytotoxic effects affecting seed germination in weeds and tomato, and the aforementioned invasive species. L. multiflorum was the most sensitive weed, particularly to lavender essential oil, which decreased the growth of its hypocotyl and radicle by 87.8% and 76.7%, respectively, at a dose of 1 µL/mL. Cucumber was the most resistant food crop, with no significant reduction observed in seed germination and hypocotyl growth with E. citriodora and L. angustifolia essential oils. Conclusions: lavender essential oil represents a promising candidate for the development of effective and safe herbicides in the management of L. multiflorum affecting cucumber crops.

Phytotoxic effects of Heterothalamus psiadioides (Asteraceae) essential oil on adventitious rooting

2014 ◽  
Vol 36 (12) ◽  
pp. 3163-3171 ◽  
Author(s):  
Diana Carla Lazarotto ◽  
Ângela Pawlowski ◽  
Eliane Regina da Silva ◽  
Joséli Schwambach ◽  
Geraldo Luiz Gonçalves Soares
Keyword(s):  
Essential Oil ◽  
Adventitious Rooting ◽  
Phytotoxic Effects

Bioherbicide Potential of Eucalyptus saligna Leaf Litter Essential Oil

2020 ◽  
Author(s):  
Eliane R. Silva ◽  
José M. Igartuburu ◽  
Gerhard E. Overbeck ◽  
Geraldo L. G. Soares ◽  
Francisco A. Macías
Keyword(s):  
Essential Oil ◽  
Leaf Litter ◽  
Eucalyptus Saligna

Essential oil from Zanthoxylum tingoassuiba loaded into multilamellar liposomes useful as antimicrobial agents

2009 ◽  
pp. 1-8 ◽  
Author(s):  
C. B. Detoni ◽  
E. C. M. Cabral-Albuquerque ◽  
S. V. A. Hohlemweger ◽  
C. Sampaio ◽  
T. F. Barros ◽  
...  
Keyword(s):  
Essential Oil ◽  
Antimicrobial Agents ◽  
Multilamellar Liposomes
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