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Biosynthesis of linalyl acetate and other terpenes in lemon mint (mentha aquatica var. citrata, lamiaceae) glandular trichomes
Year:
2008
Source of publication :
Israel Journal of Plant Sciences
Authors :
Bar, Einat
;
.
Davidovich-Rikanati, Rachel
;
.
Lewinsohn, Efraim
;
.
Zax, Alon
;
.
Volume :
56
Co-Authors:
Zaks, A., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel, Department of Evolutionary and Environmental Biology, University of Haifa, Haifa 31905, Israel
Rachel, D.-R., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Bar, E., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Inbar, M., Department of Evolutionary and Environmental Biology, University of Haifa, Haifa 31905, Israel
Lewinsohn, E., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Facilitators :
From page:
233
To page:
244
(
Total pages:
12
)
Abstract:
potential to produce and accumulate mono- and sesquiterpenes in lemon mint (Mentha aquatica var. citrata) glandular trichomes was evaluated. Volatiles were extracted using methyl-tert-butyl ether or solid phase micro extraction and determined by gas chromatography-mass spectrometry. The main components of the essential oil of lemon mint are the monoterpene alcohol linalool and its ester linalyl acetate. Sesquiterpenes, such as elemol, (E)-caryophyllene, and germacrene D, as well as the monoterpenes 1,8-cineole, β-myrcene, and β-(E)-ocimene, are also prominent. Most of the essential oil is localized in the glands, as leaves devoid of trichomes had very low essential oil levels. The quantities of all these components per leaf increased during leaf development until reaching the third whorl, and then the levels remained steady. Conversely, the essential oil content per gram fresh weight decreased with leaf development, but the decrease was not statistically significant at p = 0.05. Desalted cell-free extracts derived from isolated glandular trichomes were able to convert geranyl diphosphate into linalool. Lower amounts of geranyl diphosphate were also converted to other monoterpenes such as myrcene, α-pinene, β-pinene, limonene, β-(E)-ocimene, and nerol. Furthermore, the extracts were able to convert farnesyl diphosphate into the sesquiterpene (E)-caryophyllene and lesser amounts of other sesquiterpenes such as d-cadinene, α-humulene, β-(E)-farnesene, and α-gurjunene. These cell-free extracts also efficiently catalyzed the formation of linalyl acetate from linalool and acetyl-coenzyme A. Our findings indicate that glandular trichomes of lemon mint, similar to other members of the Lamiaceae, contain unique enzymatic activities capable of the synthesis of mono- and sesquiterpene components of its essential oil. Copyright © 2008 Science From Israel / LPPltd.
Note:
Related Files :
AATs
Citrus limon
enzyme activity
ester
Gas Chromatography
Linalyl acetate
Mentha
Monoterpenes
terpene
Show More
Related Content
More details
DOI :
10.1560/IJPS.56.3.233
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30092
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:51
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Scientific Publication
Biosynthesis of linalyl acetate and other terpenes in lemon mint (mentha aquatica var. citrata, lamiaceae) glandular trichomes
56
Zaks, A., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel, Department of Evolutionary and Environmental Biology, University of Haifa, Haifa 31905, Israel
Rachel, D.-R., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Bar, E., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Inbar, M., Department of Evolutionary and Environmental Biology, University of Haifa, Haifa 31905, Israel
Lewinsohn, E., Department of Aromatic, Medicinal and Spice Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Biosynthesis of linalyl acetate and other terpenes in lemon mint (mentha aquatica var. citrata, lamiaceae) glandular trichomes
potential to produce and accumulate mono- and sesquiterpenes in lemon mint (Mentha aquatica var. citrata) glandular trichomes was evaluated. Volatiles were extracted using methyl-tert-butyl ether or solid phase micro extraction and determined by gas chromatography-mass spectrometry. The main components of the essential oil of lemon mint are the monoterpene alcohol linalool and its ester linalyl acetate. Sesquiterpenes, such as elemol, (E)-caryophyllene, and germacrene D, as well as the monoterpenes 1,8-cineole, β-myrcene, and β-(E)-ocimene, are also prominent. Most of the essential oil is localized in the glands, as leaves devoid of trichomes had very low essential oil levels. The quantities of all these components per leaf increased during leaf development until reaching the third whorl, and then the levels remained steady. Conversely, the essential oil content per gram fresh weight decreased with leaf development, but the decrease was not statistically significant at p = 0.05. Desalted cell-free extracts derived from isolated glandular trichomes were able to convert geranyl diphosphate into linalool. Lower amounts of geranyl diphosphate were also converted to other monoterpenes such as myrcene, α-pinene, β-pinene, limonene, β-(E)-ocimene, and nerol. Furthermore, the extracts were able to convert farnesyl diphosphate into the sesquiterpene (E)-caryophyllene and lesser amounts of other sesquiterpenes such as d-cadinene, α-humulene, β-(E)-farnesene, and α-gurjunene. These cell-free extracts also efficiently catalyzed the formation of linalyl acetate from linalool and acetyl-coenzyme A. Our findings indicate that glandular trichomes of lemon mint, similar to other members of the Lamiaceae, contain unique enzymatic activities capable of the synthesis of mono- and sesquiterpene components of its essential oil. Copyright © 2008 Science From Israel / LPPltd.
Scientific Publication
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