Major monoterpenoids from Dracocephalum moldavica essential oil act as insecticides against Culex quinquefasciatus with synergistic and antagonistic effects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F24%3A10177094" target="_blank" >RIV/00027006:_____/24:10177094 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/journal/industrial-crops-and-products/vol/219/suppl/C" target="_blank" >https://www.sciencedirect.com/journal/industrial-crops-and-products/vol/219/suppl/C</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.indcrop.2024.119060" target="_blank" >10.1016/j.indcrop.2024.119060</a>
Alternative languages
Result language
angličtina
Original language name
Major monoterpenoids from Dracocephalum moldavica essential oil act as insecticides against Culex quinquefasciatus with synergistic and antagonistic effects
Original language description
Essential oils (EOs) are considered effective, safe, and eco-friendly alternatives to synthetic products for the management of insect pests and vectors. Dragonhead (Dracocephalum moldavica L., Lamiaceae) is an aromatic crop widely cultivated in Iran for its valuable citrus-like EO. This work aimed to investigate the dragonhead EO efficacy on Culex quinquefasciatus Say, the major lymphatic filariasis vector. Moreover, the main EO components (geranyl acetate, geraniol, citral, and linalool) and their binary mixtures were tested to assess the possible antagonistic or synergistic interactions aiming to propose artificial mixtures to be exploited in the agrochemical field. The assays demonstrated the EO larvicidal efficacy (LC50 of 33.8 ppm) as well as its tarsal contact toxicity and fumigant effect on adults (LC50 of 37.5 and 5.6 ppm, respectively). The time needed to achieve larval mortality after application of the EO at its LC90 was significantly different among the three larval stages. Specifically, the 90 % mortality in 2nd instar larvae was observed after 182.7 min, a significantly shorter period of time compared with that of the 3rd and 4th instar (LT90 estimated at 355.3 and 302.8 min, respectively). Regarding the EO components, citral and geranyl acetate showed the best larvicidal action (LC50 of 73.3 and 80.9 ppm, respectively), even if all the tested binary mixtures demonstrated a synergistic effect. Regarding tarsal contact toxicity and fumigant effects, these were more significant for citral (LC50 of 11.6 mu g cm-2 and 0.23 ppm, respectively) and geraniol (LC50 15.4 mu g cm-2 and 1.13 ppm, respectively). Moreover, the fumigation test revealed a synergism only for the mixture linalool/citral, while the binary mixtures geranyl acetate/geraniol, linalool/geraniol, and geraniol/citral demonstrated an antagonistic effect. This study reported for the first time the insecticidal potential of D. moldavica EO and its components on C. quinquefasciatus. The results obtained, together with the already well-established cultivation of the plant, support the possible industrial application of this EO and artificial mixtures made up of its main constituents as effective insecticidal agents.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)
Result continuities
Project
<a href="/en/project/FW06010376" target="_blank" >FW06010376: Development of new plant protection products based on plant extracts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INDUSTRIAL CROPS AND PRODUCTS
ISSN
0926-6690
e-ISSN
1872-633X
Volume of the periodical
219
Issue of the periodical within the volume
NOV 1 2024
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
119060
UT code for WoS article
001264228800001
EID of the result in the Scopus database
2-s2.0-85197024277