TY  - JOUR
AU  - Lazarević, Jelica
AU  - Jevremović, Stojan
AU  - Kostić, Igor
AU  - Vuleta, Ana
AU  - Manitasević-Jovanović, Sanja
AU  - Kostic, Miroslav
AU  - Seslija-Jovanović, Darka
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1533
AB  - Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae: Bruchinae), is one of the most important pests of the common bean Phaseolus vulgaris L. Without appropriate management it may cause significant seed loss in storages. In search for means of environmentally safe and effective protection of beans we assessed biological activity of thymol, an oxygenated monoterpene present in essential oils of many aromatic plants. We studied contact toxicity of thymol on bean seeds and its effects on adult longevity and emergence in F1 generation. Furthermore, we determined acetylcholinesterase (AChE), superoxide dismutase (SOD), catalase (CAT), mixed-function oxidase (MFO), carboxylesterases (CarE) and glutathione S-transferase (GST) activities in response to 24 h exposure of beetles to sublethal and lethal thymol concentrations. Our results showed that thymol decreased adult survival, longevity and percentage of adult emergence. Higher median lethal concentration (LC50) was recorded in females indicating their higher tolerance comparing to males. Overall, activities of SOD, CAT and CarE increased at sublethal and MFO increased at both sublethal and lethal thymol concentrations. On the other hand, GST and AChE activities decreased along with the increase in thymol concentrations from sublethal (1/5 of LC50, 1/2 of LC50) to lethal (LC50). Enzyme responses to the presence of thymol on bean seed were sex-specific. In the control group females had lower CarE and higher SOD, CAT and GST activity than males. In treatment groups, females had much higher CAT activity and much lower CarE activity than males. Our results contribute to deeper understanding of physiological mechanisms underlying thymol toxicity and tolerance which should be taken into account in future formulation of a thymol-based insecticide.
PB  - Frontiers Media Sa, Lausanne
T2  - Frontiers in Physiology
T1  - Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say
VL  - 13
DO  - 10.3389/fphys.2022.842314
ER  - 

@article{
author = "Lazarević, Jelica and Jevremović, Stojan and Kostić, Igor and Vuleta, Ana and Manitasević-Jovanović, Sanja and Kostic, Miroslav and Seslija-Jovanović, Darka",
year = "2022",
abstract = "Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae: Bruchinae), is one of the most important pests of the common bean Phaseolus vulgaris L. Without appropriate management it may cause significant seed loss in storages. In search for means of environmentally safe and effective protection of beans we assessed biological activity of thymol, an oxygenated monoterpene present in essential oils of many aromatic plants. We studied contact toxicity of thymol on bean seeds and its effects on adult longevity and emergence in F1 generation. Furthermore, we determined acetylcholinesterase (AChE), superoxide dismutase (SOD), catalase (CAT), mixed-function oxidase (MFO), carboxylesterases (CarE) and glutathione S-transferase (GST) activities in response to 24 h exposure of beetles to sublethal and lethal thymol concentrations. Our results showed that thymol decreased adult survival, longevity and percentage of adult emergence. Higher median lethal concentration (LC50) was recorded in females indicating their higher tolerance comparing to males. Overall, activities of SOD, CAT and CarE increased at sublethal and MFO increased at both sublethal and lethal thymol concentrations. On the other hand, GST and AChE activities decreased along with the increase in thymol concentrations from sublethal (1/5 of LC50, 1/2 of LC50) to lethal (LC50). Enzyme responses to the presence of thymol on bean seed were sex-specific. In the control group females had lower CarE and higher SOD, CAT and GST activity than males. In treatment groups, females had much higher CAT activity and much lower CarE activity than males. Our results contribute to deeper understanding of physiological mechanisms underlying thymol toxicity and tolerance which should be taken into account in future formulation of a thymol-based insecticide.",
publisher = "Frontiers Media Sa, Lausanne",
journal = "Frontiers in Physiology",
title = "Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say",
volume = "13",
doi = "10.3389/fphys.2022.842314"
}

Lazarević, J., Jevremović, S., Kostić, I., Vuleta, A., Manitasević-Jovanović, S., Kostic, M.,& Seslija-Jovanović, D.. (2022). Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say. in Frontiers in Physiology
Frontiers Media Sa, Lausanne., 13.
https://doi.org/10.3389/fphys.2022.842314

Lazarević J, Jevremović S, Kostić I, Vuleta A, Manitasević-Jovanović S, Kostic M, Seslija-Jovanović D. Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say. in Frontiers in Physiology. 2022;13.
doi:10.3389/fphys.2022.842314 .

Lazarević, Jelica, Jevremović, Stojan, Kostić, Igor, Vuleta, Ana, Manitasević-Jovanović, Sanja, Kostic, Miroslav, Seslija-Jovanović, Darka, "Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say" in Frontiers in Physiology, 13 (2022),
https://doi.org/10.3389/fphys.2022.842314 . .

TY  - JOUR
AU  - Lazarević, Jelica
AU  - Jevremović, Stojan
AU  - Kostić, Igor
AU  - Kostic, Miroslav
AU  - Vuleta, Ana
AU  - Manitasević-Jovanović, Sanja
AU  - Seslija-Jovanović, Darka
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1320
AB  - Simple Summary Compounds of botanical origin, including essential oils (EOs), which coevolved as plant defense mechanism against herbivores and pathogens have been proposed as a promising strategy for post-harvest control of stored product insects. Despite several drawbacks, such as low stability, phytotoxicity and food odor changes at high concentrations, EOs are believed to be safe for human and environmental health and thus have an advantage comparing to conventional insecticides. The present study was aimed to examine acute toxicity and effects of thyme (Thymus vulgaris) EO on longevity, behavior and physiology of the bean weevil (Acanthoscelides obtectus), a major pest of stored bean seeds. We found that exposure to thyme oil reduced adult survival and longevity and induced damages to lipids and proteins in a concentration-dependent manner. Sublethal EO concentrations also deterred female egg laying and strongly inhibited adult emergence. Efficacy of such low EO concentrations in suppression of adult emergence implies that thyme EO might be cost-effective and environmentally low risk botanical insecticide for bean seed protection against A. obtectus. The bean weevil Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae: Bruchinae) can cause significant losses in production of its primary host common bean Phaseolus vulgaris L. To avoid bean protection with environmentally risky chemical insecticides and provide sustainable and safe production of food, new pest management methods based on natural compounds are investigated. In the present study, we evaluated protective potential of the essential oil (EO) from the common thyme Thymus vulgaris L. applied on bean seeds. We assessed residual contact toxicity of thyme EO and its effects on A. obtectus longevity, oviposition and adult emergence. Furthermore, to elucidate the role of oxidative stress in thyme EO toxicity, we estimated the levels of oxidatively damaged proteins and lipids, as well as the level of thiols which have important role for antioxidant capacity. We found that thyme oil significantly reduced adult survival and longevity, induced oxidative damage to lipids and proteins and depleted protein and non-protein thiols in a concentration-dependent manner. Females appeared to be more tolerant to thyme oil treatment than males. Sublethal EO concentrations affected oxidative stress indices, deterred oviposition and strongly inhibited adult emergence. The results suggest that thyme oil has the potential to be used as an ecofriendly insecticide for A. obtectus control.
PB  - MDPI, Basel
T2  - Insects
T1  - Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus
IS  - 9
VL  - 11
DO  - 10.3390/insects11090563
ER  - 

@article{
author = "Lazarević, Jelica and Jevremović, Stojan and Kostić, Igor and Kostic, Miroslav and Vuleta, Ana and Manitasević-Jovanović, Sanja and Seslija-Jovanović, Darka",
year = "2020",
abstract = "Simple Summary Compounds of botanical origin, including essential oils (EOs), which coevolved as plant defense mechanism against herbivores and pathogens have been proposed as a promising strategy for post-harvest control of stored product insects. Despite several drawbacks, such as low stability, phytotoxicity and food odor changes at high concentrations, EOs are believed to be safe for human and environmental health and thus have an advantage comparing to conventional insecticides. The present study was aimed to examine acute toxicity and effects of thyme (Thymus vulgaris) EO on longevity, behavior and physiology of the bean weevil (Acanthoscelides obtectus), a major pest of stored bean seeds. We found that exposure to thyme oil reduced adult survival and longevity and induced damages to lipids and proteins in a concentration-dependent manner. Sublethal EO concentrations also deterred female egg laying and strongly inhibited adult emergence. Efficacy of such low EO concentrations in suppression of adult emergence implies that thyme EO might be cost-effective and environmentally low risk botanical insecticide for bean seed protection against A. obtectus. The bean weevil Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae: Bruchinae) can cause significant losses in production of its primary host common bean Phaseolus vulgaris L. To avoid bean protection with environmentally risky chemical insecticides and provide sustainable and safe production of food, new pest management methods based on natural compounds are investigated. In the present study, we evaluated protective potential of the essential oil (EO) from the common thyme Thymus vulgaris L. applied on bean seeds. We assessed residual contact toxicity of thyme EO and its effects on A. obtectus longevity, oviposition and adult emergence. Furthermore, to elucidate the role of oxidative stress in thyme EO toxicity, we estimated the levels of oxidatively damaged proteins and lipids, as well as the level of thiols which have important role for antioxidant capacity. We found that thyme oil significantly reduced adult survival and longevity, induced oxidative damage to lipids and proteins and depleted protein and non-protein thiols in a concentration-dependent manner. Females appeared to be more tolerant to thyme oil treatment than males. Sublethal EO concentrations affected oxidative stress indices, deterred oviposition and strongly inhibited adult emergence. The results suggest that thyme oil has the potential to be used as an ecofriendly insecticide for A. obtectus control.",
publisher = "MDPI, Basel",
journal = "Insects",
title = "Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus",
number = "9",
volume = "11",
doi = "10.3390/insects11090563"
}

Lazarević, J., Jevremović, S., Kostić, I., Kostic, M., Vuleta, A., Manitasević-Jovanović, S.,& Seslija-Jovanović, D.. (2020). Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus. in Insects
MDPI, Basel., 11(9).
https://doi.org/10.3390/insects11090563

Lazarević J, Jevremović S, Kostić I, Kostic M, Vuleta A, Manitasević-Jovanović S, Seslija-Jovanović D. Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus. in Insects. 2020;11(9).
doi:10.3390/insects11090563 .

Lazarević, Jelica, Jevremović, Stojan, Kostić, Igor, Kostic, Miroslav, Vuleta, Ana, Manitasević-Jovanović, Sanja, Seslija-Jovanović, Darka, "Toxic, Oviposition Deterrent and Oxidative Stress Effects of Thymus vulgaris Essential Oil against Acanthoscelides obtectus" in Insects, 11, no. 9 (2020),
https://doi.org/10.3390/insects11090563 . .