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Chang Y, Harmon PF, Treadwell DD, Carrillo D, Sarkhosh A, Brecht JK. Biocontrol Potential of Essential Oils in Organic Horticulture Systems: From Farm to Fork. Front Nutr 2022; 8:805138. [PMID: 35096947 PMCID: PMC8792766 DOI: 10.3389/fnut.2021.805138] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/20/2021] [Indexed: 11/30/2022] Open
Abstract
In recent decades, increasing attention has been paid to food safety and organic horticulture. Thus, people are looking for natural products to manage plant diseases, pests, and weeds. Essential oils (EOs) or EO-based products are potentially promising candidates for biocontrol agents due to their safe, bioactive, biodegradable, ecologically, and economically viable properties. Born of necessity or commercial interest to satisfy market demand for natural products, this emerging technology is highly anticipated, but its application has been limited without the benefit of a thorough analysis of the scientific evidence on efficacy, scope, and mechanism of action. This review covers the uses of EOs as broad-spectrum biocontrol agents in both preharvest and postharvest systems. The known functions of EOs in suppressing fungi, bacteria, viruses, pests, and weeds are briefly summarized. Related results and possible modes of action from recent research are listed. The weaknesses of applying EOs are also discussed, such as high volatility and low stability, low water solubility, strong influence on organoleptic properties, and phytotoxic effects. Therefore, EO formulations and methods of incorporation to enhance the strengths and compensate for the shortages are outlined. This review also concludes with research directions needed to better understand and fully evaluate EOs and provides an outlook on the prospects for future applications of EOs in organic horticulture production.
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Affiliation(s)
- Yuru Chang
- Horticultural Sciences Department, University of Florida, Gainesville, FL, United States
| | - Philip F. Harmon
- Plant Pathology Department, University of Florida, Gainesville, FL, United States
| | - Danielle D. Treadwell
- Horticultural Sciences Department, University of Florida, Gainesville, FL, United States
| | - Daniel Carrillo
- Tropical Research and Education Center, University of Florida, Homestead, FL, United States
| | - Ali Sarkhosh
- Horticultural Sciences Department, University of Florida, Gainesville, FL, United States
| | - Jeffrey K. Brecht
- Horticultural Sciences Department, University of Florida, Gainesville, FL, United States
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Mo F, Hu X, Ding Y, Li R, Long Y, Wu X, Li M. Naturally produced magnolol can significantly damage the plasma membrane of Rhizoctonia solani. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 178:104942. [PMID: 34446208 DOI: 10.1016/j.pestbp.2021.104942] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/20/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Rice sheath blight is a destructive fungal disease caused by Rhizoctonia solani. To find a safe and green measure, the biological activity of six plant extracts against R. solani was determined by mycelial growth rate method. The results showed that magnolol possessed better antifungal activities against R. solani, with an EC50 value of 7.47 mg/L. further action mechanism of magnolol against R. solani was carried out. Studies by scanning electron microscopy (SEM) showed that the morphology of R. solani mycelia was deformation and surface folds. Transmission electron microscope (TEM) observation on treated R. solani showed that magnolol could induce cytoplasmic membrane rupture and cytoplasmic membrane even disappeared completely accompanied with cellular debris was covered around this fungal, and the mycelia treated with magnolol showed fluorescence after PI staining. Further study showed that the content of malondialdehyde (MDA) and activity of chitinase, β-1,3-glucanase and relative conductivity of mycelia were increased, while the content of soluble protein and activities of catalase (CAT), polyphenol oxidase (PPO), superoxide dismutase (SOD), succinate dehydrogenase (SDH) and NAD-malate dehydrogenase (NAD-MDH) were significantly decreased. These results indicated that magnolol could significantly damage the plasma membrane of R. solani, and interfere with cell respiratory metabolism, thus inhibiting the growth of mycelium.
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Affiliation(s)
- Feixu Mo
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xianfeng Hu
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Yi Ding
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Rongyu Li
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China.
| | - Youhua Long
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xiaomao Wu
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Ming Li
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China; The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China; College of Agriculture, Guizhou University, Guiyang 550025, China.
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Galvan D, Effting L, Torres Neto L, Conte-Junior CA. An overview of research of essential oils by self-organizing maps: A novel approach for meta-analysis study. Compr Rev Food Sci Food Saf 2021; 20:3136-3163. [PMID: 34125485 DOI: 10.1111/1541-4337.12773] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 03/13/2021] [Accepted: 04/24/2021] [Indexed: 12/17/2022]
Abstract
Essential oils (EOs) are commercially important products, sources of compounds with antioxidant and antimicrobial activities considered indispensable for several fields, such as the food industry, cosmetics, perfumes, pharmaceuticals, sanitary and agricultural industries. In this context, this systematic review and meta-analysis, a novel approach will be presented using chemometric tools to verify and recognize patterns of antioxidant, antibacterial, and antifungal activities of EOs according to their geographic, botanical, chemical, and microbiological distribution. Scientific papers were selected following the Preferred Reporting Items for Systematic Review and Meta-Analyses statement flow diagram, and the data were evaluated by the self-organizing map and hierarchical cluster analysis. Overall, this novel approach allowed us to draw an overview of antioxidants and antimicrobials activities of EOs reported in 2019, through 585 articles evaluated, obtaining a dataset with more than 10,000 data, distributed in more than 80 countries, 290 plant genera, 150 chemical compounds, 30 genera of bacteria, and 10 genera of fungi. The networks for geographic, botanical, chemical, and microbiological distribution indicated that Brazil, Asia, the botanical genus Thymus, species Thymus vulgaris L. "thyme," the Lamiaceae family, limonene, and the oxygenated monoterpene class were the most representative in the dataset, while the species Escherichia coli and Candida albicans were the most used to assess the antimicrobial activity of EOs. This work can be seen as a guide for the processing of metadata using a novel approach with non-conventional statistical methods. However, this preliminary approach with EOs can be extended to other sources or areas of food science.
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Affiliation(s)
- Diego Galvan
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil
| | - Luciane Effting
- Chemistry Department, State University of Londrina (UEL), Londrina, Paraná, Brazil
| | - Luiz Torres Neto
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil.,Graduate Program in Food Science (PPGCAL), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil
| | - Carlos Adam Conte-Junior
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.,Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil.,Graduate Program in Food Science (PPGCAL), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil
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