Effect of penconazole and drought stress on the essential oil composition and gene expression of Mentha pulegium L. (Lamiaceae) at flowering stage

2014 ◽  
Vol 36 (5) ◽  
pp. 1167-1175 ◽  
Author(s):  
Halimeh Hassanpour ◽  
Ramazan Ali Khavari-Nejad ◽  
Vahid Niknam ◽  
Khadijeh Razavi ◽  
Farzaneh Najafi
Keyword(s):  
Gene Expression ◽  
Drought Stress ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Mentha Pulegium

Effect of elevation and phenological stages on essential oil composition of Stachys

2017 ◽  
Vol 42 (6) ◽  
Author(s):  
Masomeh Alimohammadi ◽  
Mehrab Yadegari ◽  
Hamze Ali Shirmardi
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Natural Habitats ◽  
Phenological Stages ◽  
Methyl Chavicol ◽  
Full Flowering ◽  
Germacrene D

AbstractObjective:Determine the best elevation and phenological stages effects on essential oil content and composition inMaterials and methods:Three phenological stages (vegetative, full flowering and seeding) and three elevation ranges (2500–2700, 2700–2900 and over 2900 m), shoots of plants collected from Kallar mountain as natural habitats from Chaharmahal and Bakhtiari Province. Composition of essential oil detected by GC/MS.Results:The maximum amount of secondary metabolites of β-ocimene, methyl chavicol, germacrene-D, 1,8 cineole and phthalate had measured in vegetative stage and various of elevation ranges. The most essential oil content (0.145%) was obtained in 2700–2900 m and full flowering stage. The most components in full flowering were β-eudesmol, menthol and γ-eudesmol. The most of germacrene-D, levomenol, β-thujene, β-caryophyllene, β-sesquiphellandrene, α-eudesmol and delta-cadinene was achieved in seeding stage.Conclusion:Elevation and phenological stages had significant effect on essential oil of

scholarly journals Essential Oil Composition of Thymus fedtschenkoi Ronniger at Different Growing Altitudes in Mazandaran, Iran

2018 ◽  
Vol 51 (2) ◽  
pp. 75-83 ◽  
Author(s):  
H. Ghelichnia
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Mazandaran Province ◽  
Aerial Parts ◽  
Negative Effect ◽  
North Of Iran ◽  
And Function ◽  
Positive Effect

Abstract Thymus fedtschenkoi Ronniger (Lamiaceae) is a permanent, that grows in some mountain rangelands of Iran, including Mazandaran province. The aerial parts of Thymus fedtschenkoi were collected during flowering stage in June 2012, from mountain rangelands of Mazandaran province, in north of Iran. Samples were collected from five altitudes (1300 m, 1600 m, 2000 m, 2400 m and 3000 m) in mountain region of Mazandaran province. The goal of current research was to assessment the effect of altitude on the chemical composition and function of essential oil in Thymus fedtschenkoi. The essential oil were obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas spectrometry (GC-MS). Based on the results, the essential oil content is between 0.92-1.31%, at different altitudes. The highest content of essential oil (1.31%%) was extracted in the highest altitude (3000 m), while it was opposite (0.92%) in the lowest altitude (1300 m). The main essential oil compounds of Thymus fedtschenkoi samples were thymol (8.62%-36.86%), carvacrol (6.787%-68.39%), γ-terpinene (1.473T-6.461%), p-cymen (5.764%-16.204%) and linalool (0.465%-6.457 6.8%). According to the results, altitude has a positive effect on the percentage of essential oils and essential oil increases with increasing altitude. The altitude has a negative effect on the percentage of thymol and the content of thymol decreased with increasing altitude. The altitude has a positive effect on the percentage of carvacrol and the content of carvacrol increased with increasing altitude.

scholarly journals ESSENTIAL OIL COMPOSITION OF THYMUS FALLAX FISCH. & C.A. MEY. AT DIFFERENT GROWING ALTITUDES IN MAZANDARAN, IRAN

2020 ◽  
Vol 53 (3) ◽  
Author(s):  
H.assan GHELICHNIA
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Mazandaran Province ◽  
Aerial Parts ◽  
Negative Effect ◽  
North Of Iran ◽  
And Function ◽  
Positive Effect

Thymus fallax Fisch. & C.A. Mey. (Lamiaceae) is a permanent plant that grows in some mountain rangelands of Mazandaran province in Iran. The aerial parts of Thymus fallax were collected during flowering stage from mountain rangelands of Mazandaran province, in North of Iran. Around samples were collected from three altitudes (2400 m, 2700 m and 3000 m a.s.l.), in mountain regions of Mazandaran province. The goal of current research was to assess the effect of altitude on the chemical composition and function of essential oil in Thymus fallax. The essential oil was obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas spectrometry (GC-MS). Based on the results, the essential oil content is between 1.12 - 1.61% at different altitudes. The result of study shows that the highest concentrated essential oil (1.61%) was extracted in the lowest altitude (2400 m), while it was opposite, (0.1.12%) in the highest altitude (3000 m). The main compounds of essential oil are: thymol (5.95% - 10.06%), carvacrol (13.63% - 69.04%), p-cymene (4.19% - 12.18%) and borneol (4.72% - 5.66%). According to the results, altitude has a negative effect on the percentage of essential oils and essential oil decreases with increasing altitude. The altitude has a negative effect on the percentage of thymol and the content of thymol decreased with increasing altitude. The altitude has a positive effect on the percentage of carvacrol and the content of carvacrol increased with increasing altitude.

scholarly journals Essential Oil Composition of Thymus × citriodorus (Pers.) Schreb. at Different Harvest Stages

2017 ◽  
Vol 45 (1) ◽  
pp. 185-189 ◽  
Author(s):  
Ozlem TONCER ◽  
Sengul KARAMAN ◽  
Emel DIRAZ ◽  
Tahsin SOGUT ◽  
Suleyman KIZIL
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Biologically Active ◽  
Bornyl Acetate ◽  
Oil Composition ◽  
Flowering Stage ◽  
Phenological Stages ◽  
Full Flowering ◽  
Total Oil ◽  
Active Substances

Thymus is represented by 39 species (60 taxa) in Turkey and the rate of its endemism is 45% in Turkey. The herb is widely used for several purposes. Its essential oil compositions and biologically active substances are affected by the phenological stages. Therefore, the aim of this study is to evaluate the variations in the essential oil composition of Thymus × citriodorus (Pers.) Schreb. growing in Southeastern Anatolia Region of Turkey at different phenological stages (pre-flowering, full flowering, post flowering). The oils were obtained by hydrodistillation of air-dried samples. The yields of oils (w/w %) at different phenological stages was respectively 2.0% at pre-flowering state, 1.9% at flowering stage, and 1.3% at post-flowering stage. T. × citriodorus was determined mainly by using GC/MS. A total of 21 compounds, representing 93.9% in the pre-flowering stage, 98.8% in the flowering stage and 98.91% in post-flowering of the total oil, were identified. Monoterpene hydrocarbons (terpinolene) and oxygenated monoterpenes (α-terpineol) were observed to have the highest percentage in T. × citriodorus oil. The major compounds of the oil were terpinolene, α- terpineol, linalool, bornyl acetate and borneol. The highest percentage of terpinolene was determined to be 71% in flowering stages.

scholarly journals Analysis of the essential oil composition of three cultivated Nepeta species from Iran

2020 ◽  
Vol 75 (7-8) ◽  
pp. 247-254 ◽  
Author(s):  
Fatemeh Zahra Amirmohammadi ◽  
Majid Azizi ◽  
Seyyed Hossein Nemati ◽  
Marcello Iriti ◽  
Sara Vitalini
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Mass Spectroscopy ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Plant Materials ◽  
Nepeta Cataria ◽  
Full Flowering ◽  
Main Components

AbstractEssential oils (EOs) of three Iranian cultivated Nepeta species were investigated. The oils were obtained by hydrodistillation of air-dried plant materials at full flowering stage and analyzed by gas chromatography (GC) and gas chromatography coupled to mass spectroscopy (GC/MS). In total, 89 compounds were detected. In over 2 years, a number of constituents were identified in the EO of Nepeta binaloudensis first and second years (26 and 37, respectively), Nepeta cataria (25 and 32, respectively), and Nepeta assurgens (45 and 50, respectively). In the oils of N. binaloudensis, 4a-α,7-α,7a-α-nepetalactone (NL) 59.7% and 1,8-cineole (19.6%) during the first and second years, respectively, were the main constituents. The main components of N. cataria were 4a-α,7-α,7a-β-NL (72.8%) and 4a-α,7-β,7a-α-NL (73.9%) during the first and second years, respectively, and 4a–α,7-α,7a-α-NL (55.5%) and 1,8-cineole (24.1%) during the first and second years, respectively, were the main constituents of N. assurgens. The results showed that NLs isomers and 1,8-cineole were the main components of the oils of three cultivated Nepeta species.

Essential oil composition of Hyssop (Hyssopus officinalis L.) under salt stress at flowering stage

2016 ◽  
Vol 28 (5) ◽  
pp. 458-464 ◽  
Author(s):  
Omolbanin Jahantigh ◽  
Farzaneh Najafi ◽  
Hassanali Naghdi Badi ◽  
Ramazan Ali Khavari-Nejad ◽  
Forough Sanjarian
Keyword(s):  
Salt Stress ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Hyssopus Officinalis

scholarly journals Essential Oil Composition of Thymus trauvetteri Klokov & Desj. at Different Growing Altitudes in Mazandaran, Iran

2019 ◽  
Vol 52 (2) ◽  
pp. 197-205
Author(s):  
H. Ghelichnia
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Individual Variability ◽  
Oil Composition ◽  
Flowering Stage ◽  
Mazandaran Province ◽  
Aerial Parts ◽  
Significant Difference ◽  
North Of Iran ◽  
And Function

Abstract Thymus trauvetteri Klokov & Desj. (Lamiaceae) is a permanent species that grows in some mountain rangeland of Iran including Mazandaran province. The aerial parts of Thymus trauvetteri were collected during flowering stage in June 2014, from mountain rangelands of Mazandaran province,in North of Iran. Around samples collected from four altitudes (2100 m, 2400 m, 2700 m and 3000 m) in mountain region of Mazandaran province. The goal of current research was to assess the effect of altitude on the chemical composition and function of essential oil in Thymus trauvetteri. The essential oil were obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas spectrometry (GC-MS). Based on the results, the essential oil content is between 1.01-1.51% at different altitudes. The highest essential oil (1.51%%) was extracted at an altitude of 2400 m, while it was opposite (1.01%) at an altitude of 3000 m. The main compounds essential oil of Thymus trauvetteri samples were identified: thymol (5.93%-49.75%), carvacrol (1.78%-54.02%), and p-cymen (6.98%-19.07%). According to the results, altitude was significantly (p≤ 0.05) effective on essential oil, thymol, carvacrol and p-cymen rates according to results of correlation analysis. The highest percentage of essential oil is at an altitude of 2400 m and the lowest is 3000 m above sea level. The highest percentage of thymol is in L3 (2700 m) and lowest is in L1 (2100 m). The highest percentage of carvacrol is in L3 (2700 m) and lowest is in L4 (3000 m). The highest percentage of p-cymen is in L1, L2, L3 (2100, 2400 and 2700 m, no significant difference) and lowest is in L4 (3000 m). Variations in essential oil rates and compositions may be due to on genetic, ecological or individual variability.

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