Essential oils from Varronia curassavica (Cordiaceae) accessions and their compounds (E)-caryophyllene and α-humulene as an alternative to control Dorymyrmex thoracius (Formicidae: Dolichoderinae)

Oliveira, Bruna Maria Santos de; Melo, Carlisson R.; Santos, Ane Caroline Celestino; Nascimento, Luis F. A.; Nízio, Daniela Aparecida Castro; Cristaldo, Paulo F.; Blank, Arie Fitzgerald; Bacci, Leandro

doi:10.1007/s11356-018-4044-1

Cited by 25 publications

(14 citation statements)

References 56 publications

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“…Ciência Rural, v.52, n.3, 2022. Barazetti et al In addition to medicinal properties, some studies have demonstrated various biological activities for the species, such as repellent for the control of urban ant Dorymyrmex thoracicus (OLIVEIRA et al 2019), as well as antibacterial (RODRIgUES et al 2012), anti-allergic (PASSOS et al, 2007, antifungal, and antiprotozoal action (NIZIO et al 2018).…”

Section: Biologymentioning

confidence: 99%

Growth, leaf gas exchange and mycorrhizal colonization of three medicinal species submitted to different irradiance levels

et al. 2022

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This study o evaluated growth, leaf gas exchange and arbuscular mycorrhizal fungi root colonization in three medicinal plant species under different irradiance intensities. Fridericia chica (Bonpl.) L.G.Lohmann, Mikania laevigata Sch.Bip. ex Baker and Varronia curassavica Jacq. were propagated by cutting and cultivated for 120 days in artificially shaded environments using black shade-type screens, obtaining four irradiance levels: 100%, 70%, 50% and 30%. The experimental design was completely randomized in a 3 x 4 factorial scheme (three plant species and four irradiation levels) with seven replicates. The three medicinal species showed higher liquid assimilation, mass growth and arbuscular mycorrhizal fungi root colonization rates when exposed to environments with 70% light availability. In relation to physiological responses, V. curassavica presented higher photosynthetic rate, stomatal conductance and transpiration when submitted to 70% irradiance, being able to be cultivated in more open environments with higher irradiation levels. Conversely F. chica and M. laevigata presented shade tolerance characteristics. At the initial growth phase, the results obtained can be used as indicators to recommend the ideal cultivation environment for these species in agroforestry systems.

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Section: Biologymentioning

confidence: 99%

Growth, leaf gas exchange and mycorrhizal colonization of three medicinal species submitted to different irradiance levels

et al. 2022

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“…Serial dilutions in acetone of P. cablin EO (5,10,30,40,50, and 60 µg of EO per mg of insect) and the EObased emulsion (10,20,30,50, and 60 µg of emulsion per mg of insect) were prepared to estimate lethal doses through dose-mortality curves (i.e., toxicity) for females with similar weight (0.45 ± 0.02 mg).…”

Section: Dose-mortality Bioassaymentioning

confidence: 99%

Sublethal exposure to an emulsion based on Pogostemon cablin (Lamiaceae) essential oil impairs digestibility, feeding, fecundity, and mobility of the coffee berry borer, Hypothenemus hampei

Santos

Farder-Gomes

Ribeiro

et al. 2022

Preprint

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The global search for eco-friendly and human-safe pesticides has intensified, and research on essential oils (EOs) has expanded due to their remarkable insecticidal activities and apparent human-safe. Despite this, most of the literature focuses on short-term and simplified efforts to understand lethal effects, with only a few comprehensive studies addressing sublethal exposures. To fill this shortcoming, we explore the lethal and sublethal effects of Pogostemon cablin (Lamiaceae) EO and an EO-based emulsion (18%) using the coffee berry borer Hypothenemus hampei Ferrari (Coleoptera: Curculionidae: Scolytinae) as a model. First, we determine the toxicity of EO and EO-based emulsion using dose-mortality curves and lethal times. Second, we subjected adult females of H. hampei to sublethal doses to assess whether they affected their behavior, reproductive output, and histological features. Our findings reveal that patchoulol (43.05%), α-Guaiene (16.06%), and α-Bulnesene (13.69%) were the main components of the EO. Furthermore, the EO and its emulsion had similar toxicity, with dose-mortality curves and lethal times overlapping 95% confidence intervals. We also observed that sublethal exposure of females of H. hampei reduces reproduction and feeding, increases walking activity, and causes histopathological changes in the midgut. This study advances the knowledge of sublethal effects of an eco-friendly substance on insects.

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“…Caryophyllene has also been proposed as a control agent of the south American ant species Dorymyrmex thoracius as an alternative of synthetic insecticides [61]. The authors showed that the compound was toxic to the insects at relatively high concentrations (LD 50 = 1.49 µL L −1 , for worker ants upon a 48-hour exposure).…”

Section: Predominant Volatile Compounds In the Cecropia/azteca Symbiosismentioning

confidence: 99%

Volatile Organic Compounds in the Azteca/Cecropia Ant-Plant Symbiosis and the Role of Black Fungi

Mayer

Hoog

Cristescu

et al. 2021

JoF

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Black fungi of the order Chaetothyriales are grown by many tropical plant-mutualistic ants as small so-called “patches” in their nests, which are located inside hollow structures provided by the host plant (“domatia”). These fungi are introduced and fostered by the ants, indicating that they are important for the colony. As several species of Chaetothyriales tolerate, adsorb, and metabolize toxic volatiles, we investigated the composition of volatile organic compounds (VOCs) of selected domatia in the Azteca/Cecropia ant-plant mutualism. Concentrations of VOCs in ant-inhabited domatia, empty domatia, and background air were compared. In total, 211 compounds belonging to 19 chemical families were identified. Ant-inhabited domatia were dominated by ketones with 2-heptanone, a well-known ant alarm semiochemical, as the most abundant volatile. Empty domatia were characterized by relatively high concentrations of the monoterpenes d-limonene, p-cymene and b-phellandrene, as well as the heterocyclic sulphur-containing compound, benzothiazole. These compounds have biocidal properties and are primarily biosynthesized by plants as a defense mechanism. Interestingly, most of the latter compounds were present at lower concentrations in ant inhabited domatia than in non-colonized ones. We suggest that Chaetothyriales may play a role in reducing the VOCs, underlining that the mutualistic nature of these fungi as VOCs accumulation might be detrimental for the ants, especially the larvae.

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Essential oils from Varronia curassavica (Cordiaceae) accessions and their compounds (E)-caryophyllene and α-humulene as an alternative to control Dorymyrmex thoracius (Formicidae: Dolichoderinae)

Cited by 25 publications

References 56 publications

Growth, leaf gas exchange and mycorrhizal colonization of three medicinal species submitted to different irradiance levels

Growth, leaf gas exchange and mycorrhizal colonization of three medicinal species submitted to different irradiance levels

Sublethal exposure to an emulsion based on Pogostemon cablin (Lamiaceae) essential oil impairs digestibility, feeding, fecundity, and mobility of the coffee berry borer, Hypothenemus hampei

Volatile Organic Compounds in the Azteca/Cecropia Ant-Plant Symbiosis and the Role of Black Fungi

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