Effect of altitude on essential oil composition and on glandular trichome density in three "Nepeta" species ("N. sessilifolia", "N. heliotropifolia" and "N. fissa")

Talebi, Seyed Mehdi; Nohooji, Majid Ghorbani; Yarmohammadi, Mahboobeh; Khani, Musa; Matsyura, А. V.

doi:10.5209/mbot.59730

Cited by 22 publications

(8 citation statements)

References 40 publications

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“…Oxygenated monoterpene ratios mathematically decreased with increasing altitudes, but there was no linear increase or decrease in oxygenated sesquiterpene ratios. Similar findings were also reported by [42]. Oxygenated monoterpenes were respectively followed by phenolic monoterpene (3.29 -25.91%), sesquiterpene hydrocarbons (2.92 -5.94%), oxygenated sesquiterpene (0.92 -1.63%) and monoterpenes hydrocarbons (0.04 -0.17%) (Table 2).…”

Section: Essential Oil Componentssupporting

confidence: 89%

Effects of Different Altitudes on Essential Oil Composition of <em>Origanum majorana</em> Species

Öner¹,

Yeşil²

2023

Preprint

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Altitude is an important ecological factor that significantly affects essential oil content, yield and composition. The Origanum majorana, belonging to Origanum genus of Lamiaceae family, is a species with antibacterial and antiviral effects, widely used as a spice and also used in folk medicine for treatment of diseases such as asthma, indigestion, headache and rheumatism. In this study, conducted to examine the effects of altitude on essential oil content and composition of origanum majorana, plant samples were collected from the southern region of Turkey at the beginning of flowering period from seven different altitudes (700-800 m, 800-900 m, 900-1000 m, 1000-1100 m, 1100-1200 m, 1200-1300 m and 1300-1400 m) at 100 m intervals. The highest percentage of essential oil (6.50%) obtained by hydro-distillation was determined at 700-800 m altitudes. The GC-MS analyses revealed that low altitude affected some essential oil components positively. The linalool ratio, which is the major component of the essential oil of Origanum majorana species, was the highest at 700-800 m (79.84%) altitudes. Borneol (0.97%), linalool oxide (1.28%), trans-linalool oxide (1.47%), caryophyllene (2.78%), a- humulene (0.21%), germacrene-D (0.31%) and bicyclogermacrene (2.64%) components yielded high values at 800-900 m altitudes. Thymol (6.28%) and a-terpineol (1.04%), which have an important place in the essential oil composition, increased at 1100-1200 m altitudes; a- terpinene (0.17%), cis-sabinene hydrate (0.82%), terpinene-4-ol (0.55%) and carvacrol (21.50%) increased at 1300-1400 m altitudes.

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Section: Essential Oil Componentssupporting

confidence: 89%

Effects of Different Altitudes on Essential Oil Composition of <em>Origanum majorana</em> Species

Öner¹,

Yeşil²

2023

Preprint

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“…Differently, 34 , 39 , 40 , reported that oxygenated sesquiterpene (35.3% and 33.14%) and oxygenated monoterpene (49%) were the main components of this essential oil obtained from plants collected in Ghamshelo and Arak, Iran. Hence, the high content of acids is a unique characteristic of the plants harvested from Isfahan province of Iran and can be strongly affected by the location, climatic and ecological conditions, field operations, growth stage, and genetic traits 41 .…”

Section: Discussionmentioning

confidence: 92%

Evaluation of the composition and antimicrobial activities of essential oils from four species of Lamiaceae Martinov native to Iran

Ghavam

Bacchetta

Castangia

et al. 2022

Sci Rep

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In this study the essential oils obtained from four different plant species belonging to the Lamiaceae family were extracted by means of hydrodistillation and their composition and antimicrobial activity were evaluated. About 66 components were identified by using gas chromatography-mass spectrometry (GC–MS), and among all, thymol (67.7%), oleic acid (0.5–62.1%), (−)-caryophyllene oxide (0.4–24.8%), α-pinene (1.1–19.4%), 1,8-cineole (0.2–15.4%), palmitic acid (0.32–13.28%), ( +)spathulenol (11.16%), and germacrene D (0.3–10.3%) were the most abundant in all the species tested (i.e. Thymus daenensis, Nepeta sessilifolia, Hymenocrater incanus, and Stachys inflata). In particular, only the composition of essential oils from H. incanus was completely detected (99.13%), while that of the others was only partially detected. Oxygenated monoterpenes (75.57%) were the main compounds of essential oil from T. daenensis; sesquiterpenes hydrocarbons (26.88%) were the most abundant in S. inflata; oxygenated sesquiterpenes (41.22%) were mainly detected in H. incanus essential oil, while the essential oil from N. sessilifolia was mainly composed of non-terpene and fatty acids (77.18%). Due to their slightly different composition, also the antibacterial activity was affected by the essential oil tested. Indeed, the highest antibacterial and antifungal activities were obtained with the essential oil from T. daenensis by means of the inhibition halo (39 ± 1 and 25 ± 0 mm) against Gram-positive strains such as Staphylococcus aureus and Aspergillus brasiliensis. The minimal inhibitory concentration (MIC) and minimal bactericidal/fungicidal concentration (MBC/MFC) of the essential oils obtained from the four species varied from 16 to 2000 μg/mL and were strictly affected by the type of microorganism tested. As an example, the essential oils from H. incanus and S. inflata were the most effective against the Gram-negative bacterium Pseudomonas aeruginosa (MIC 16 and 63 μg/ml, respectively), which is considered one of the most resistant bacterial strain. Therefore, the essential oils obtained from the four species contained a suitable phytocomplexes with potential applications in different commercial area such as agriculture, food, pharmaceutical and cosmetic industries. Moreover, these essential oils can be considered a valuable natural alternative to some synthetic antibiotics, thanks to their ability to control the growth of different bacteria and fungi.

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“…The application of salinity stress (in the absence of nanoparticles) also created similar results, as with an increase in salinity stress, the amount of artemisinin decreased. Exogenous factors have strong effect on production of different plant metabolites (Talebi et al, 2019(Talebi et al, , 2020. For example, Aftab et al (2010) reported a synergistic relationship between endogenous H 2 O 2 and artemisinin contents, as both contents increased under low levels of salinity (50 and 100 mM) and decreased thereafter.…”

Section: Discussionmentioning

confidence: 99%

TiO2 nanoparticles and salinity stress in relation to artemisinin production and ADS and DBR2 expression in Artemisia absinthium L.

et al. 2022

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Artemisia absinthium L. is an important herb that is widely cultivated in different parts of the world for its medicinal properties. The present study evaluated the effects of four concentrations of nanoparticles treatment (0, 10, 20 and 30 mg L-1) and NaCl salinity stress (0, 50, 100 and 150 mM NaCl) and their interactions with respect to the expression of two key genes, i.e. DBR2 and ADS, in the biosynthesis pathway of artemisinin in A. absinthium. Total RNA was extracted and a relative gene expression analysis was carried out using Real-Time PCR. The amount of artemisinin was also determined by HPLC. All the experiments were performed as factorial in a completely randomized design in three replications. The results revealed that salinity stress and nanoparticles treatment and their interaction affected the expressions of these genes significantly. The highest levels of ADS gene expression were observed in the 30 mg L-1 nanoparticles–treated plants in the presence of 150 mM salinity stress and the lowest levels in the 10 mg L-1 nanoparticles–treated plants under 50 mM salinity stress. The maximum DBR2 gene expression was recorded in the 10 mg L-1 nanoparticles–treated plants in the absence of salinity stress and the minimum expression in the 100 mM salinity-stressed plants in the absence of nanoparticles treatment. Moreover, the smallest amounts of artemisinin were observed in the 150 mM salinity-stressed plants in the absence of nanoparticles and the highest amounts in the 30 mg L-1 nanoparticles–treated plants. The maximum amounts of artemisinin and ADS gene expression were reported from the plants in the same nanoparticles treatment and salinity stress conditions. In this regard, the amount of artemisinin was decreased by half in the plants containing the highest DBR2 gene expression. Meanwhile, no significant correlation was observed between these gene expressions and the artemisinin amount in the other nanoparticles–treated plants under different levels of salinity stress. The biosynthetic pathway of secondary metabolites appears to be very complex and dose not directly dependent on these gene expressions.

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Effect of altitude on essential oil composition and on glandular trichome density in three "Nepeta" species ("N. sessilifolia", "N. heliotropifolia" and "N. fissa")

Cited by 22 publications

References 40 publications

Effects of Different Altitudes on Essential Oil Composition of <em>Origanum majorana</em> Species

Effects of Different Altitudes on Essential Oil Composition of <em>Origanum majorana</em> Species

Evaluation of the composition and antimicrobial activities of essential oils from four species of Lamiaceae Martinov native to Iran

TiO2 nanoparticles and salinity stress in relation to artemisinin production and ADS and DBR2 expression in Artemisia absinthium L.

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