Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS

Thyme species, including Thymus vulgaris, T. kotschyanus (drought-tolerant) and T. serpyllum (drought-sensitive), are valuable medicinal herbs. They are often grown in arid regions and are increasingly suffering from water stress due to climate change. Here, we analyzed the metabolome and expression...

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Main Authors: Maryam Alipour, Maryam Haghighi, Mehdi Rahimmalek, Michael Reichelt, Laure Martinelli, Karin Groten, Axel Mithöfer
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-03-01
Series:Frontiers in Plant Science
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Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2025.1557446/full
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author Maryam Alipour
Maryam Alipour
Maryam Haghighi
Mehdi Rahimmalek
Michael Reichelt
Laure Martinelli
Karin Groten
Axel Mithöfer
author_facet Maryam Alipour
Maryam Alipour
Maryam Haghighi
Mehdi Rahimmalek
Michael Reichelt
Laure Martinelli
Karin Groten
Axel Mithöfer
author_sort Maryam Alipour
collection DOAJ
description Thyme species, including Thymus vulgaris, T. kotschyanus (drought-tolerant) and T. serpyllum (drought-sensitive), are valuable medicinal herbs. They are often grown in arid regions and are increasingly suffering from water stress due to climate change. Here, we analyzed the metabolome and expression of selected genes in leaves of these species under drought stress with and without treatment with the phytohormone abscisic acid (ABA). Among the terpenes, dominant metabolites in thyme, thymol was the most important terpenoid component, followed by thymoquinone, carvacrol and p-cymene in all three species. Drought stress reduced terpene concentrations, while moderate ABA levels increased them. T. kotschyanus showed the highest concentrations of thymol and carvacrol after combined treatment with drought and ABA. Metabolite accumulation was partially correlated with genes related to terpenoid biosynthesis. The combined treatment of drought stress and ABA resulted in a significant reduction of the stress hormone jasmonic acid and an increase of its biosynthetic precursor, OPDA (cis-12-oxophytodienoic acid), in all species. The present research results indicate that ABA treatment at moderate concentrations could be used as a measure to increase the production of some pharmaceutically active phenolic monoterpenes in T. vulgaris, T. serpyllum and T. kotschyanus and increase the stress resistance of the plants.
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spelling doaj-art-1e31aefab84848b2a32a47fabe3a89a32025-08-20T02:57:53ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-03-011610.3389/fpls.2025.15574461557446Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MSMaryam Alipour0Maryam Alipour1Maryam Haghighi2Mehdi Rahimmalek3Michael Reichelt4Laure Martinelli5Karin Groten6Axel Mithöfer7Department of Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, GermanyDepartment of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, IranDepartment of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, IranDepartment of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, IranDepartment of Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, GermanyDepartment of Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, GermanyDepartment of Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, GermanyDepartment of Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, GermanyThyme species, including Thymus vulgaris, T. kotschyanus (drought-tolerant) and T. serpyllum (drought-sensitive), are valuable medicinal herbs. They are often grown in arid regions and are increasingly suffering from water stress due to climate change. Here, we analyzed the metabolome and expression of selected genes in leaves of these species under drought stress with and without treatment with the phytohormone abscisic acid (ABA). Among the terpenes, dominant metabolites in thyme, thymol was the most important terpenoid component, followed by thymoquinone, carvacrol and p-cymene in all three species. Drought stress reduced terpene concentrations, while moderate ABA levels increased them. T. kotschyanus showed the highest concentrations of thymol and carvacrol after combined treatment with drought and ABA. Metabolite accumulation was partially correlated with genes related to terpenoid biosynthesis. The combined treatment of drought stress and ABA resulted in a significant reduction of the stress hormone jasmonic acid and an increase of its biosynthetic precursor, OPDA (cis-12-oxophytodienoic acid), in all species. The present research results indicate that ABA treatment at moderate concentrations could be used as a measure to increase the production of some pharmaceutically active phenolic monoterpenes in T. vulgaris, T. serpyllum and T. kotschyanus and increase the stress resistance of the plants.https://www.frontiersin.org/articles/10.3389/fpls.2025.1557446/fullthyme speciesterpenoidsphenolicsphytohormonesabscisic acidgene expression
spellingShingle Maryam Alipour
Maryam Alipour
Maryam Haghighi
Mehdi Rahimmalek
Michael Reichelt
Laure Martinelli
Karin Groten
Axel Mithöfer
Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
Frontiers in Plant Science
thyme species
terpenoids
phenolics
phytohormones
abscisic acid
gene expression
title Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
title_full Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
title_fullStr Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
title_full_unstemmed Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
title_short Integrated metabolomics, transcriptomic, and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in Thymus species using LC-MS/MS
title_sort integrated metabolomics transcriptomic and phytohormonal analyses to study the effects of water stress and foliar abscisic acid application in thymus species using lc ms ms
topic thyme species
terpenoids
phenolics
phytohormones
abscisic acid
gene expression
url https://www.frontiersin.org/articles/10.3389/fpls.2025.1557446/full
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