Effet aphicide de l’huile essentielle de &lt;i&gt;Ocimum basilicum&lt;/i&gt; L. et de son composé majoritaire sur le puceron du cotonnier &lt;i&gt;Aphis gossypii&lt;/i&gt; Glover (Homoptera : Aphididae) au Togo

Akantetou, Pikassalé Komlan; Nadio, Nafadjara A.; Bokobana, Magnim E.; Tozoou, Panawé; Kilimou, Pali; Koba, Koffi; Poutouli, Wiyao; Raynaud, Christine; Sanda, Komla

doi:10.4314/ijbcs.v14i1.8

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…The results showed an increase in aphid mortality rate with increasing doses of the mixtures used, 24 hours after the release of the aphids on the treated cotton leaves. This direct correlation between aphid mortality rates on the one hand and product concentration on the other hand (in accordance with the classical dose-effect relationship) was similar to those observed in the tests carried out with O. canum and O. basilicum essential oils separately 9,12 . The results also showed that low concentrations of O. canum essential oil mixed with O. basilicum essential oil in higher proportion induced more mortality than the opposite case.…”

Section: Discussionsupporting

confidence: 88%

“…Thus, in recent years, much work has been carried out to propose alternative protection methods that respect the environment, such as plant extracts with an insecticidal effect and inert substances 6 . Indeed, studies carried out with the essential oils of certain plants have given effective insecticidal effects on several crop pests [7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

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In vitro evaluation of the interaction of extemporaneous mixtures of essential oils of Ocimum canum Sims and Ocimum basilicum L. on Aphis gossypii Glover, 1877 (Homoptera: Aphididae)

2021

IJGHC

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The recognition of the loss of sensitivity of insect pests to several synthetic active ingredients is putting crop phytosanitary protection programs in difficulty. In order to exploit the different modes of action of the active compounds of natural pesticides for an effective and lasting control of pests, the aphicidal effect of extemporaneous mixtures of the essential oil of Ocimum canum and that of Ocimum basilicum L., two plants of the Togolese flora, was evaluated in vitro on Aphis gossypii. The tests were carried out in the laboratory according to the IRAC N° 1 Version 2 methodology. The results obtained showed that the essential oil of O. canum potentiates the action of the essential oil of O. basilicum, using small amounts of O. canum mixed with high amounts of O. basilicum. The inhibition ratios (IR) confirmed these results In vitro evaluation …

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

In vitro evaluation of the interaction of extemporaneous mixtures of essential oils of Ocimum canum Sims and Ocimum basilicum L. on Aphis gossypii Glover, 1877 (Homoptera: Aphididae)

2021

IJGHC

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“…L'action antifongique des huiles essentielles est de nos jours bien établie. En effet plusieurs travaux ont été réalisés pour l'étude de leurs pouvoirs inhibiteurs dans les domaines médicaux et vétérinaires, sur les champignons pathogènes et les insectes (Alemayehu, 2014;Rosello et al, 2015 ;Wafa et Sofiane, 2020 ;Akantetou et al, 2020). Par ailleurs, au Burkina Faso, la plante entière de Lippia multiflora, de Ocimum basilicum et de Ocimum americanum étaient beaucoup utilisées traditionnellement par les populations comme insectifuges dans les habitations (elles le sont aujourd'hui mais de moins en moins); les rameaux fructifères de Cymbopogon schoenanthus étaient utilisées pour conserver certains produits de récolte (niébé, voandzou, …) dans les sacs.…”

Section: Discussionunclassified

“…Cela s'expliquerait par la qualité et la quantité des molécules antifongiques que renferme chaque huile essentielle et aussi à la structure chimique des molécules (Zarith et al, 2018). Par exemple, l'huile essentielle de Ocimum basilicum est constituée de 24 composés (Akantetou et al, 2020) dont les plus majoritaires sont les monoterpènes oxygénés représentés principalement par l'estragol (38,78%), le linalol (19,45%) et le méthyleugénol (9,98%). Ils sont suivis par le bergamotène (8,48 %) qui est un sesquiterpène hydrocarboné (Ngom et al, 2014).…”

Section: Discussionunclassified

Effets de quatre huiles essentielles sur la croissance mycélienne radiale d’un isolat de <i>Alternaria sp.</i> au Burkina Faso

Sirima¹,

Sereme²,

Sérémé³

et al. 2020

Int. J. Bio. Chem. Sci

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L’alternariose de la tomate est une maladie cryptogamique dévastatrice dans les zones maraichères du Burkina Faso. Tous les organes de la plante (tiges, feuilles, fruits) sont attaqués, entrainant une baisse importante du rendement et une dépréciation de la qualité de la production. Dans la présente étude, quatre huiles essentielles de plantes aromatiques locales (Cymbopogon schoenanthus, Lippia multiflora, Ocimum americanum, et Ocimum basilicum) ont été testées, pour évaluer leurs propriétés d'inhibition sur la croissance radiale du mycélium d’un isolat pathogène de Alternaria sp. Le test in vitro des doses de 100%, 50%, 10%, 5% et 1% a montré que toutes ces huiles essentielles possèdent une activité antifongique sur ledit isolat. Les taux d’inhibition des huiles essentielles sur la croissance du champignon étudié vont de 25,96% à 100%. La meilleure inhibition a été enregistrée avec l’huile essentielle de Cymbopogon schoenanthus, de Ocimum basilicum et de Lippia multiflora pour les concentrations supérieures à 1%. Il ressort donc de cette étude que trois huiles essentielles, stoppent la croissance mycélienne de l’isolat pour des doses allant de 5% à 100%. Ces huiles (Cymbopogon schoenanthus, Ocimum basilicum et Lippia multiflora) pourraient être utilisées pour la mise au point de phytopesticides afin d'atténuer l’utilisation intensive et hasardeuse des pesticides.Mots clés: Alternariose, activité antifongique, plante aromatique, tomate. English Title: Effects of four essential oils on radial mycelial growth of an isolate of Alternaria sp. in Burkina Faso Early blight of tomato is a devastating cryptogamic disease in the vegetable gardens in Burkina Faso. All plant’s organs (stems, leaves, fruits) are attacked causing a significant decrease in the yield and a depreciation of the quality of the production in the field. In the present study, four essential oils of aromatic plants (Cymbopogon schoenanthus, Lippia multiflora, Ocimum americanum, and Ocimum basilicum) were tested to evaluate the inhibition properties of these oils on the radial growth of the mycelium of an isolated pathogen of Alternaria sp. In vitro tests at doses of 100%, 50%, 10%, 5% and 1% showed that all these essential oils tested have antifungal activity on said strain. The inhibition rates of essential oils on the growth of the fungus studied range from 25.96% to 100%. The best inhibition was recorded with the essential oil of Cymbopogon schoenanthus, Ocimum basilicum and Lippia multiflora for applied concentrations more than 1%. It therefore emerges from this study that three essential oils stop the mycelial growth of the isolate for doses ranging from 5% to 100%. These oils (Cymbopogon schoenanthus, Ocimum basilicum and Lippia multiflora) could be used for the development of phytopesticides in order to reduce the intensive and hazardous use of pesticides.Keywords: Early blight, antifungal activity, aromatic plant, tomato.

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“…Its cultivation is prone to attack by bioaggressors, among whom entomological fauna is one of the most important and difficult to control (Matthews, 1989). In Togo, losses from pest complexes without phytosanitary protection range from 60 to 80% on average (Akantetou, 2014). The geographical extension of this culture, its alternation or association with vegetable and food crops and its genetic improvement have as consequences the evolution of the diversity of the parasitic features with an economic impact of some pests considered as minor a few years ago.…”

Section: Introductionmentioning

confidence: 99%

Cotton plant devastators (Heteroptera) associated with the reproduction phase of cotton: species richness and abundance in the Agro-ecological regions of Togo (West Africa)

TOZOOU,

AKANTETOU,

GOMINA

et al. 2023

Int.J.Zool.Appl.Biosci

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It is worth controlling arthropods, cotton plant devastators for a production in quantity and quality. Phytophagous bugs, secondary devastators before 1980 in Togo constitute nowadays an important entomological factor with regard to their density and damage they cause. Their inventory was conducted through young plant felling and threshing in 4 agro-ecological regions. This process shows that these insects connected to floral and fruit-bearing phase are abundant and diversified. 55 species belonging to 7 families have been counted. The family of Pentatomidae is the most represented in species. In contrary, the family of Miridae is the most abundant followed respectively by Pyrrhocoridae and Pentatomidae. The four (4) agro-ecological regions are similar in terms of bugs’ diversity. These results can be useful in the improvement of fighting strategies.

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Effet aphicide de l’huile essentielle de <i>Ocimum basilicum</i> L. et de son composé majoritaire sur le puceron du cotonnier <i>Aphis gossypii</i> Glover (Homoptera : Aphididae) au Togo

Cited by 3 publications

References 4 publications

In vitro evaluation of the interaction of extemporaneous mixtures of essential oils of Ocimum canum Sims and Ocimum basilicum L. on Aphis gossypii Glover, 1877 (Homoptera: Aphididae)

In vitro evaluation of the interaction of extemporaneous mixtures of essential oils of Ocimum canum Sims and Ocimum basilicum L. on Aphis gossypii Glover, 1877 (Homoptera: Aphididae)

Effets de quatre huiles essentielles sur la croissance mycélienne radiale d’un isolat de <i>Alternaria sp.</i> au Burkina Faso

Cotton plant devastators (Heteroptera) associated with the reproduction phase of cotton: species richness and abundance in the Agro-ecological regions of Togo (West Africa)

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