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Pinto GFS, Roma LP, Kolb RM. Phytotoxicity of organic extracts of five medicinal plants of the Neotropical savanna. BRAZ J BIOL 2023; 83:e270122. [PMID: 37075426 DOI: 10.1590/1519-6984.270122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 03/29/2023] [Indexed: 04/21/2023] Open
Abstract
Medicinal plants produce a high diversity of secondary metabolites with different biological activities, which are commonly evaluated when prospecting for bioherbicides. We analyzed the phytotoxic activity of organic extracts from the leaves of five medicinal species, Byrsonima intermedia, Moquiniastrum polymorphum, Luehea candicans, Miconia chamissois, and Qualea cordata. Phytotoxicity was evaluated on the initial growth of cucumber seedlings through tests with different concentrations of hexane, ethyl acetate, and methanol extracts. The results showed that all organic extracts and all concentrations affected cucumber development, with methanol extracts generally showing the greatest negative effect on the initial growth of the target species. The only exception was for M. chamissois extracts, in which the hexane extract had the greatest phytotoxicity. Furthermore, the organic extracts were subjected to preliminary phytochemical analysis, revealing the widespread presence of alkaloids along with other chemical classes. All the study species are thus potential candidates for use as natural herbicides.
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Affiliation(s)
- G F S Pinto
- Universidade Estadual Paulista - UNESP, Faculdade de Ciências e Letras, Departamento de Ciências Biológicas, Laboratório de Anatomia e Fisiologia Ecológica de Plantas, Câmpus de Assis, Assis, SP, Brasil
| | - L P Roma
- Universidade de São Paulo - USP, Instituto de Biociências, Departamento de Botânica, Laboratório de Fitoquímica, São Paulo, SP, Brasil
| | - R M Kolb
- Universidade Estadual Paulista - UNESP, Faculdade de Ciências e Letras, Departamento de Ciências Biológicas, Laboratório de Anatomia e Fisiologia Ecológica de Plantas, Câmpus de Assis, Assis, SP, Brasil
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Phytochemical Profile and Herbicidal (Phytotoxic), Antioxidants Potential of Essential Oils from Calycolpus goetheanus (Myrtaceae) Specimens, and in Silico Study. Molecules 2022; 27:molecules27154678. [PMID: 35897853 PMCID: PMC9331371 DOI: 10.3390/molecules27154678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 12/10/2022] Open
Abstract
The essential oil (EO) of Calycolpus goetheanus (Myrtaceae) specimens (A, B, and C) were obtained through hydrodistillation. The analysis of the chemical composition of the EOs was by gas chromatography coupled with mass spectrometry CG-MS, and gas chromatography coupled with a flame ionization detector CG-FID. The phytotoxic activity of those EOs was evaluated against two weed species from common pasture areas in the Amazon region: Mimosa pudica L. and Senna obtusifolia (L.) The antioxidant capacity of the EOs was determined by (DPPH•) and (ABTS•+). Using molecular docking, we evaluated the interaction mode of the major EO compounds with the molecular binding protein 4-hydroxyphenylpyruvate dioxygenase (HPPD). The EO of specimen A was characterized by β-eudesmol (22.83%), (E)-caryophyllene (14.61%), and γ-eudesmol (13.87%), while compounds 1,8-cineole (8.64%), (E)-caryophyllene (5.86%), δ-cadinene (5.78%), and palustrol (4.97%) characterize the chemical profile of specimen B’s EOs, and specimen C had α-cadinol (9.03%), δ-cadinene (8.01%), and (E)-caryophyllene (6.74%) as the majority. The phytotoxic potential of the EOs was observed in the receptor species M. pudica with percentages of inhibition of 30%, and 33.33% for specimens B and C, respectively. The EOs’ antioxidant in DPPH• was 0.79 ± 0.08 and 0.83 ± 0.02 mM for specimens A and B, respectively. In the TEAC, was 0.07 ± 0.02 mM for specimen A and 0.12 ± 0.06 mM for specimen B. In the results of the in silico study, we observed that the van der Waals and hydrophobic interactions of the alkyl and pi-alkyl types were the main interactions responsible for the formation of the receptor–ligand complex.
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Caputo L, Smeriglio A, Trombetta D, Cornara L, Trevena G, Valussi M, Fratianni F, De Feo V, Nazzaro F. Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii. Front Microbiol 2020; 11:409. [PMID: 32351456 PMCID: PMC7174609 DOI: 10.3389/fmicb.2020.00409] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 02/27/2020] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to characterize the chemical composition and to evaluate the antimicrobial and phytotoxic properties of the essential oils (EOs) obtained from leaves of Leptospermum petersonii chemotype "Variety B" and Eucalyptus gunnii, native to Australia. Geranyl acetate, γ-terpinene, geraniol, terpinolene, α-pinene, p-cimene, and linalool were the main components in L. petersonii EO, confirming also the existence of several chemotypes in such taxa; on the other hand, 1,8-cineole, trans-sabinene hydrate acetate, globulol, longicyclene, terpinolene, and camphene were present in major amounts in the E. gunnii EO. Chemical analysis of L. petersonii revealed that it belongs to the variety "B." E. gunnii EO showed good antibacterial activity, with an MIC of 0.5 and 2 μg/mL against Staphylococcus aureus, and Pectobacterium carotovorum, respectively. The activity of E. gunnii EO was stronger than L. petersonii EO, whose maximum MIC reached 5 μg/mL. E. gunnii and L. petersonii EOs were particularly effective in inhibiting the biofilm formation by S. aureus, already at a concentration of 0.01 μg/mL. The other strains were resistant to both EOs up to a dose of 0.05 μg/mL. The maximum inhibition on biofilm formed by P. carotovorum was recorded for E. gunnii EO, reaching a value of 93.12% at 1.0 μg/mL. This is the first manuscript which studies the biofilm inhibition by EOs and evaluates their effects on biofilm metabolism. Both EOs were more effective against P. carotovorum. In addition, even though L. petersonii EO 0.1 μg/mL was unable to inhibit biofilm formation by Escherichia coli, it decreased the metabolic activity of the biofilm to 78.55% compared to control; furthermore, despite it inducing a relatively low inhibition (66.67%) on biofilm formation, it markedly affected metabolic activity, which decreased to 16.09% with respect to the control. On the contrary, L. petersonii EO 0.5 μg/mL induced a 79.88% inhibition of S. aureus biofilm, maintaining a high metabolic activity (90.89%) compared to the control. Moreover, this EO showed inhibitory activity against radical elongation of Solanum lycopersicum and the germination of radish. On the contrary, E. gunnii EO showed no phytotoxic activity.
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Affiliation(s)
- Lucia Caputo
- Department of Pharmacy, University of Salerno, Fisciano, Italy
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Domenico Trombetta
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Laura Cornara
- Department for the Earth, Environment and Life Sciences, School of Mathematical, Physical and Natural Sciences, University of Genoa, Genoa, Italy
| | - Greg Trevena
- Essentially Australia, Byron Bay, NSW, Australia
| | - Marco Valussi
- European Herbal and Traditional Medicine Practitioners Association, Norwich, United Kingdom
| | - Florinda Fratianni
- Institute of Food Sciences, CNR-ISA, Italian National Research Council, Avellino, Italy
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, Fisciano, Italy
| | - Filomena Nazzaro
- Institute of Food Sciences, CNR-ISA, Italian National Research Council, Avellino, Italy
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Pilatti DM, Fortes AMT, Jorge TCM, Boiago NP. Comparison of the phytochemical profiles of five native plant species in two different forest formations. BRAZ J BIOL 2018; 79:233-242. [PMID: 29924133 DOI: 10.1590/1519-6984.179526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 11/16/2017] [Indexed: 11/22/2022] Open
Abstract
The expression of chemical compounds by individual plants of the same species in different locations may be affected by abiotic factors resulting in differences in the production of allelopathic compounds. The objective of this study was to compare the phytochemical profiles of plant species from two different forest formations in the state of Paraná, Brazil. The forest formations were Seasonal Semideciduous Forest (SSF) and Lowland Ombrophilous Dense Forest (LODF), and the five study species were Jacaranda micrantha, Cecropia pachystachya, Mimosa bimucronata, Schinus terebinthifolius and Cedrela fissilis. Secondary metabolites were extracted by exhaustive extraction with methanol, and the crude extract was fractionated using column chromatography. The fractions were used to calculate the retention factor of the main compounds using thin layer chromatography and phytochemical tests. The classes of compounds identified were practically the same among the analyzed species, however, at different levels of concentration. The type of tannins found in S. terebinthifolius differed between the two forest formations.
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Affiliation(s)
- D M Pilatti
- Grupo de Pesquisa Plasticidade Fenotípica em Plantas, Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Programa de Pós-graduação em Ecologia e Conservação, Departamento de Zoologia, Setor de Ciências Biológicas, Universidade Federal do Paraná - UFPR, Av. Coronel. Francisco Heráclito dos Santos, 100, Jardim das Américas, CEP 81530-000, Curitiba, PR, Brasil
| | - A M T Fortes
- Grupo de Pesquisa Monitoramento e Preservação de Ecossistemas, Laboratório de Fisiologia Vegetal, Programa de Pós-graduação em Conservação e Manejo de Recursos Naturais, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná - Unioeste, Rua Universitária, 2069, Universitário, CEP 85819-110, Cascavel, PR, Brasil
| | - T C M Jorge
- Grupo de Pesquisa Prospecção de Microrganismos e Substâncias Bioativas com Aplicações em Saúde, Laboratório de Química, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná - Unioeste, Rua Universitária, 2069, Universitário, CEP 85819-110, Cascavel, PR, Brasil
| | - N P Boiago
- Grupo de Pesquisa de Otimização de Sistemas Agroindustriais do Oeste do Paraná, Laboratório de Controle de qualidade de produtos agrícolas, Programa de Pós-graduação em Engenharia Agrícola, Centro de Ciências Exatas e Tecnológicas, Universidade Estadual do Oeste do Paraná - Unioeste, Rua Universitária, 2069, Universitário, CEP 85819-110, Cascavel, PR, Brasil
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