Seasonal variations in chemical composition and fumigant activity of five Eucalyptus essential oils against three moth pests of stored dates in Tunisia

Jemâa, Jouda Médiouni Ben; Haouel, Soumaya; Bouaziz, Mohamed; Khouja, Mohamed Larbi

doi:10.1016/j.jspr.2011.10.001

Cited by 91 publications

(50 citation statements)

References 32 publications

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“…Terpenoids are abundant also in the foliage of E. camaldulensis, providing the characteristic smell as well as being valuable economically and influencing ecological interactions (Leicach, 2010;Külheim et al, 2015). Moreover, in E. camaldulensis oil, monoterpenes were prevalent while sesquiterpene hydrocarbons and oxygenated sesquiterpenes were less represented (Mediouni Ben Jemâa, 2012).…”

Section: Figurementioning

confidence: 99%

Insecticidal activity of three plants extracts against Myzus persicae (Sulzer, 1776) and their phytochemical screening

Nia

Frah

Azoui

2015

AAS

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To reduce the use of synthetic pesticides and their negative effects on the environment, leaves extracts of Artemisia herbaalba Asso, Eucalyptus camaldulensis Dehnh and Rosmarinus officinalis L. were obtained with petroleum ether, ethanol and distilled water as solvents. These extracts were evaluated under laboratory conditions for their insecticidal effect against 3 to 4 days-old Myzus persicae individuals (Homoptera: Aphididae) at 1, 2.5, 5, and 10 %. We made observations after 24 hours. Etheric extract of all plants was effective and caused mortalities (100 %, 53 % and 60 % respectively) at the highest concentration. However, ethanolic and aqueous extracts did not show any significant insecticidal effect. The phytochemical screening showed the richness of etheric extract in terpenes. The results obtained suggest that we can make bioinsecticides based on leaves etheric extracts from these plants for use in integrated pest management.

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Section: Figurementioning

confidence: 99%

Insecticidal activity of three plants extracts against Myzus persicae (Sulzer, 1776) and their phytochemical screening

Nia

Frah

Azoui

2015

AAS

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“…Seasonal variation involves abrupt changes in temperature and soil moisture, causing deviations of biosynthetic pathways of primary and secondary metabolites (Taiz and Zeiger, 2006). Many studies have reported changes in the content of secondary metabolites during different seasons, especially the greater accumulation of phytotoxins and expression of biological activities in the dry season (Jemâa et al, 2012;Castelo et al, 2012;Sahoo et al, 2012). The accumulation of secondary metabolites often occurs in plants subjected to biotic and abiotic stresses (Ramakrishna and Ravishankar, 2011).…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of different classes of secondary metabolites in response to environmental factors is part of an adaptive strategy that allows tolerance to biotic and abiotic stresses (Ramakrishna and Ravishankar, 2011). Studies have shown changes in the amount, composition and expression of biological activities of plant secondary metabolites associated with seasonal variations (Castelo et al, 2012, Jemâa et al, 2012. The knowledge of these variations allows the definition of periods wherein some constituents are in greater proportion in the plant, which may be related to different physiological demands associated with defenses against enemies and reproduction (Darrow and Bowers, 1997), as well as contributing to the knowledge of the ecological interactions of plants with their environment.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation in phytotoxicity of Drimys brasiliensis Miers

Anese¹,

Grisi²,

Jatobá³

et al. 2014

Idesia

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Drimys brasiliensis Miers (Winteraceae), commonly called casca d'anta, is found in the Atlantic Forest and in Cerrado domain. It is considered an important source of natural compounds with pharmacological properties, however little is known about their phytotoxic potential on other plants. This study aims to evaluate the phytotoxic effects of D. brasiliensis leaf extracts collected in two seasons (dry and rainy) on the germination and seedling growth of Sesamum indicum L., as well as evaluating the effect of the most active extract on metaxylem cell size in the roots of the target species. The aqueous extract was prepared with 10 g of dried, ground leaves dissolved in 100 mL of distilled water, resulting in a 10% extract concentrate. Dilutions were made with distilled water to 7.5; 5.0; 2.5% and 0% (control). The leaf extracts showed phytotoxicity on germination and early growth of sesame, with more pronounced activity in leaves collected in the dry season. The inhibitory effects were observed at the cellular level in sesame roots, with a significant reduction in the size of the metaxylem cells in the presence of all concentrations of leaf extract. The extract from leaves of D. brasiliensis may constitute a promising source in the search for natural phytotoxins for use in sustainable agriculture practices.Key words: inhibition, seasonality, germinability, metaxylem, sesame. RESUMEN Drimys brasiliensis

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“…In addition, the biological activity of the essential oil is mainly correlated with its chemical composition. A number of studies have been reported previously in relation to seasonal influences in the yield and chemical composition of essential oils from various plant species and showed great variations in the concentration of essential oil components [12,[17][18][19] The study of the influence of seasonal variation on the essential oil composition of A. koreana twigs is required to increase the quality and quantity of essential oil production. Further, there have been no reports on seasonal variation in the essential oil composition of A. koreana twigs.…”

Section: Introductionmentioning

confidence: 99%

Influence of Harvesting Time on Chemical Composition of the Essential Oil of Abies Koreana Twigs

Seo

Sowndhararajan

Kim³

2016

Int J Pharm Pharm Sci

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Objective: In the present study, the influence of harvesting time (April, June, August and October 2015) on the essential oil composition of Abies koreana twigs from Korea was investigated. Methods:The essential oil from the twigs of A. koreana was isolated by steam distillation and its chemical composition was determined by gas chromatography-mass spectrometry (GC-MS). Results:The essential oil yield was found to vary from 0.76 to 1.20% depending on the month of harvesting. The GC-MS analysis revealed the identification of 26 different essential oil components from the twigs harvested in the months of April, June, August and October, which were mostly monoterpene hydrocarbons (57.63-72.38%) followed by oxygenated monoterpenes (18.82-25.96%). Harvesting time mainly influenced on the concentration of the major components of the essential oil from the twigs of A. koreana. Limonene (17.38-31.13%), bornyl acetate (13.22-21.17%), camphene (12.56-13.26%), α-pinene (11.05-13.02%), β-pinene (4.55-5.70%), 3-carene (5.21-6.43%) and β-eudesmol (1.49-8.24%) were detected as the major components in the essential oil. Conclusion:The main differences between the essential oil compositions of four different months can be referred to limonene and bornyl acetate. The results showed considerable variations in the composition of essential oil, particularly quantitative variation during different harvesting months.

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Seasonal variations in chemical composition and fumigant activity of five Eucalyptus essential oils against three moth pests of stored dates in Tunisia

Cited by 91 publications

References 32 publications

Insecticidal activity of three plants extracts against Myzus persicae (Sulzer, 1776) and their phytochemical screening

Insecticidal activity of three plants extracts against Myzus persicae (Sulzer, 1776) and their phytochemical screening

Seasonal variation in phytotoxicity of Drimys brasiliensis Miers

Influence of Harvesting Time on Chemical Composition of the Essential Oil of Abies Koreana Twigs

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