<i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i>
The exploration of new green, ecofriendly bioactive compounds has attracted the attention of researchers and scientists worldwide to avoid the harmful effects of chemically synthesized compounds. <i>Persicaria lapathifolia</i> has been reported to have various bioactive compounds, while...
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MDPI AG
2021-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/9/1798 |
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| author | Ahmed M. Abd-ElGawad Giuliano Bonanomi Sarah A. Al-Rashed Abdelsamed I. Elshamy |
| author_facet | Ahmed M. Abd-ElGawad Giuliano Bonanomi Sarah A. Al-Rashed Abdelsamed I. Elshamy |
| author_sort | Ahmed M. Abd-ElGawad |
| collection | DOAJ |
| description | The exploration of new green, ecofriendly bioactive compounds has attracted the attention of researchers and scientists worldwide to avoid the harmful effects of chemically synthesized compounds. <i>Persicaria lapathifolia</i> has been reported to have various bioactive compounds, while its essential oil (EO) has not been determined yet. The current work dealt with the first description of the chemical composition of the EO from the aerial parts of <i>P. lapathifolia</i>, along with studying its free radical scavenging activity and herbicidal effect on the weed <i>Echinochloa colona</i>. Twenty-one volatile compounds were identified via GC–MS analysis. Nonterpenoids were the main components, with a relative concentration of 58.69%, in addition to terpenoids (37.86%) and carotenoid-derived compounds (1.75%). <i>n</i>-dodecanal (22.61%), α-humulene (11.29%), 2,4-dimethylicosane (8.97%), 2<i>E</i>-hexenoic acid (8.04%), γ-nonalactone (3.51%), and limonene (3.09%) were characterized as main compounds. The extracted EO exhibited substantial allelopathic activity against the germination, seedling root, and shoot growth of the weed <i>E. colona</i> in a dose-dependent manner, showing IC<sub>50</sub> values of 77.27, 60.84, and 33.80 mg L<sup>−1</sup>, respectively. In addition, the <i>P. lapathifolia</i> EO showed substantial antioxidant activity compared to ascorbic acid as a standard antioxidant. The EO attained IC<sub>50</sub> values of 159.69 and 230.43 mg L<sup>−1</sup>, for DPPH and ABTS, respectively, while ascorbic acid exhibited IC<sub>50</sub> values 47.49 and 56.68 mg L<sup>−1</sup>, respectively. The present results showed that the emergent leafy stems of aquatic plants such as <i>P. lapathifolia</i> have considerably low content of the EO, which exhibited substantial activities such as antioxidant and allelopathic activities. Further study is recommended to evaluate the effects of various environmental and climatic conditions on the production and composition of the EOs of <i>P. lapathifolia</i>. |
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| spelling | doaj.art-600eaf208c1e4d50a97808fd78ab4b882023-11-22T14:51:52ZengMDPI AGPlants2223-77472021-08-01109179810.3390/plants10091798<i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i>Ahmed M. Abd-ElGawad0Giuliano Bonanomi1Sarah A. Al-Rashed2Abdelsamed I. Elshamy3Plant Production Department, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDepartment of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, ItalyDepartment of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi ArabiaChemistry of Natural Compounds Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, EgyptThe exploration of new green, ecofriendly bioactive compounds has attracted the attention of researchers and scientists worldwide to avoid the harmful effects of chemically synthesized compounds. <i>Persicaria lapathifolia</i> has been reported to have various bioactive compounds, while its essential oil (EO) has not been determined yet. The current work dealt with the first description of the chemical composition of the EO from the aerial parts of <i>P. lapathifolia</i>, along with studying its free radical scavenging activity and herbicidal effect on the weed <i>Echinochloa colona</i>. Twenty-one volatile compounds were identified via GC–MS analysis. Nonterpenoids were the main components, with a relative concentration of 58.69%, in addition to terpenoids (37.86%) and carotenoid-derived compounds (1.75%). <i>n</i>-dodecanal (22.61%), α-humulene (11.29%), 2,4-dimethylicosane (8.97%), 2<i>E</i>-hexenoic acid (8.04%), γ-nonalactone (3.51%), and limonene (3.09%) were characterized as main compounds. The extracted EO exhibited substantial allelopathic activity against the germination, seedling root, and shoot growth of the weed <i>E. colona</i> in a dose-dependent manner, showing IC<sub>50</sub> values of 77.27, 60.84, and 33.80 mg L<sup>−1</sup>, respectively. In addition, the <i>P. lapathifolia</i> EO showed substantial antioxidant activity compared to ascorbic acid as a standard antioxidant. The EO attained IC<sub>50</sub> values of 159.69 and 230.43 mg L<sup>−1</sup>, for DPPH and ABTS, respectively, while ascorbic acid exhibited IC<sub>50</sub> values 47.49 and 56.68 mg L<sup>−1</sup>, respectively. The present results showed that the emergent leafy stems of aquatic plants such as <i>P. lapathifolia</i> have considerably low content of the EO, which exhibited substantial activities such as antioxidant and allelopathic activities. Further study is recommended to evaluate the effects of various environmental and climatic conditions on the production and composition of the EOs of <i>P. lapathifolia</i>.https://www.mdpi.com/2223-7747/10/9/1798pale smartweedessential oilphytotoxicitygreen chemistryherbicides |
| spellingShingle | Ahmed M. Abd-ElGawad Giuliano Bonanomi Sarah A. Al-Rashed Abdelsamed I. Elshamy <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> Plants pale smartweed essential oil phytotoxicity green chemistry herbicides |
| title | <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> |
| title_full | <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> |
| title_fullStr | <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> |
| title_full_unstemmed | <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> |
| title_short | <i>Persicaria lapathifolia</i> Essential Oil: Chemical Constituents, Antioxidant Activity, and Allelopathic Effect on the Weed <i>Echinochloa colona</i> |
| title_sort | i persicaria lapathifolia i essential oil chemical constituents antioxidant activity and allelopathic effect on the weed i echinochloa colona i |
| topic | pale smartweed essential oil phytotoxicity green chemistry herbicides |
| url | https://www.mdpi.com/2223-7747/10/9/1798 |
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