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      • Record: found
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      Effects of Essential Oil from Hinoki Cypress, Chamaecyparis obtusa, on Physiology and Behavior of Flies

      research-article
      Author(s): , , *
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      Journal: PLoS ONE
      Publisher: Public Library of Science

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          Abstract

          Phytoncides, which are volatile substances emitted from plants for protection against plant pathogens and insects, are known to have insecticidal, antimicrobial, and antifungal activities. In contrast to their negative effects on microorganisms and insects, phytoncides have been shown to have beneficial effects on human health. Essential oil from Hinoki cypress ( Chamaecyparis obtusa) is mostly used in commercial products such as air purifiers. However, the physiological/behavioral impact of essential oil from C. obtusa on insects is not established. In this study, we tested the effects of essential oil extracted from C. obtusa on the physiologies and behaviors of Drosophila melanogaster and Musca domestica. Exposure to essential oil from C. obtusa decreased the lifespan, fecundity, locomotive activity, and developmental success rate of D. melanogaster. In addition, both fruit flies and house flies showed strong repellent behavioral responses to the essential oil, with duration times of about 5 hours at 70 μg/ml. These results suggest that essential oil from C. obtusa can be used as a ‘human-friendly’ alternative insect repellent.

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          Repellent activity of essential oils: a review.

          Luz Nerio, Jesus Olivero-Verbél, Elena Stashenko (2010)
          Currently, the use of synthetic chemicals to control insects and arthropods raises several concerns related to environment and human health. An alternative is to use natural products that possess good efficacy and are environmentally friendly. Among those chemicals, essential oils from plants belonging to several species have been extensively tested to assess their repellent properties as a valuable natural resource. The essential oils whose repellent activities have been demonstrated, as well as the importance of the synergistic effects among their components are the main focus of this review. Essential oils are volatile mixtures of hydrocarbons with a diversity of functional groups, and their repellent activity has been linked to the presence of monoterpenes and sesquiterpenes. However, in some cases, these chemicals can work synergistically, improving their effectiveness. In addition, the use of other natural products in the mixture, such as vanillin, could increase the protection time, potentiating the repellent effect of some essential oils. Among the plant families with promising essential oils used as repellents, Cymbopogon spp., Ocimum spp. and Eucalyptus spp. are the most cited. Individual compounds present in these mixtures with high repellent activity include alpha-pinene, limonene, citronellol, citronellal, camphor and thymol. Finally, although from an economical point of view synthetic chemicals are still more frequently used as repellents than essential oils, these natural products have the potential to provide efficient, and safer repellents for humans and the environment.
          Article 0 comments Cited 231 times – based on 0 reviews     Review now
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            Antimicrobial activity of individual and mixed fractions of dill, cilantro, coriander and eucalyptus essential oils.

            Kareen Stanich, Benoît Girard, G Mazza … (2002)
            Essential oils from dill (Anethum graveolens L.), coriander (seeds of Coriandrum sativum L.), cilantro (leaves of immature C. sativum L.) and eucalyptus (Eucalyptus dives) were separated into heterogeneous mixtures of components by fractional distillation and were analyzed by gas chromatography-mass spectroscopy. Minimum inhibitory concentrations against gram-positive bacteria, gram-negative bacteria and Saccharomyces cerevisiae were determined for the crude oils and their fractions. Essential oil of cilantro was particularly effective against Listeria monocytogenes, likely due to the presence of long chain (C6-C10) alcohols and aldehydes. The strength and spectrum of inhibition for the fractions often exceeded those determined in the crude oils. Mixing of fractions resulted in additive, synergistic or antagonistic effects against individual test microorganisms.
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              Rapid iterative negative geotaxis (RING): a new method for assessing age-related locomotor decline in Drosophila.

              Julia Gargano, Ian Martin, Poonam Bhandari … (2005)
              Age-related behavioral declines are common manifestations of aging in animals. Negative geotaxis, an innate escape response during which flies ascend the wall of a cylinder after being tapped to its bottom, is one of the behaviors that senesces in Drosophila. Many laboratories, including ours, have used a variety of negative geotaxis assays based on the performance of single flies. To circumvent limitations of single-fly assays, we developed a new method for assessing negative geotaxis called rapid iterative negative geotaxis (RING). In RING assays, digital photography is used to document negative geotaxis in multiple groups of animals simultaneously. We show that performance in RING assays is not influenced by the density of flies being tested, the time of day, or repeated testing. We used the RING assay to demonstrate that negative geotaxis declines with the age of animals as previously shown in single fly studies and that senescence of negative geotaxis is sensitive to genetic background. Finally, we used RING assays to show that long-lived Indy and chico mutants exhibit delayed senescence of negative geotaxis. Our results demonstrate that RING is a powerful method for assessing negative geotaxis that should facilitate the search for manipulations that influence behavioral aging in Drosophila.
              Article 0 comments Cited 157 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Hiromu Tanimoto: Role: Editor
                Journal
                Journal ID (nlm-ta): PLoS One
                Journal ID (iso-abbrev): PLoS ONE
                Journal ID (publisher-id): plos
                Journal ID (pmc): plosone
                Title: PLoS ONE
                Publisher: Public Library of Science (San Francisco, CA USA )
                ISSN (Electronic): 1932-6203
                Publication date (Electronic): 1 December 2015
                Publication date Collection: 2015
                Volume: 10
                Issue: 12
                Electronic Location Identifier: e0143450
                Affiliations
                [001]Department of Biological Sciences, Inha University, Incheon, Korea
                Tohoku University, JAPAN
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                Conceived and designed the experiments: KJM. Performed the experiments: HSD. Analyzed the data: SHL KJM. Wrote the paper: SHL HSD KJM.

                Article
                Publisher ID: PONE-D-15-35679
                DOI: 10.1371/journal.pone.0143450
                PMC ID: 4666656
                PubMed ID: 26624577
                SO-VID: 5ea13ca4-b4d6-4d02-af85-88a8bbaace33
                Copyright statement: Copyright @ 2015
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

                History
                Date received : 13 August 2015
                Date accepted : 4 November 2015
                Page count
                Figures: 6, Tables: 2, Pages: 14
                Funding
                This work was supported by National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2015R1A2A2A01005580, www.nrf.re.kr) and grant funded by Inha University (No 51753-01, www.inha.ac.kr) to KJM. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
                Categories
                Subject: Research Article
                Custom metadata
                Data Availability All relevant data are within the paper.

                ScienceOpen disciplines: Uncategorized
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                ScienceOpen disciplines: Uncategorized

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