Effect of drought stress on metabolite adjustments in drought tolerant and sensitive thyme
Autor: | Mohammad-Reza Azimi-Moqadam, Mohsen Kompany-Zareh, Farid Shekari, Mohsen Ashrafi, Parviz Moradi, Ehsan Mohsenifard |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
0301 basic medicine Fumaric acid Sucrose Physiology Proton Magnetic Resonance Spectroscopy Metabolite Drought tolerance Plant Science 01 natural sciences Thymus Plant 03 medical and health sciences chemistry.chemical_compound Species Specificity Stress Physiological Genetics Principal Component Analysis fungi food and beverages Adaptation Physiological Droughts Horticulture 030104 developmental biology chemistry Succinic acid Chlorophyll Metabolome Malic acid Sugars Citric acid Metabolic Networks and Pathways 010606 plant biology & botany |
Zdroj: | Plant Physiology and Biochemistry. 132:391-399 |
ISSN: | 0981-9428 |
Popis: | Drought is one of the most important threats to plants and agriculture; therefore, understanding of the mechanism of drought tolerance is crucial for breeding of drought tolerant plants. Here, we assessed effects of four levels of drought (90%, 55%, 40% and 25% FC) on some physiological criteria and metabolite adjustment of two different drought-responsive thyme plants (Thymus vulgaris as drought sensitive and T. Kotschyanus as drought tolerant species), using 1H-NMR. Among three physiological parameters and 18 identified metabolites, species × treatment effects were significant (P ≤ 0.01) for leaf temperature, acetic acid, citric acid, fumaric acid, malic acid, succinic acid, fructose, sucrose and serine. RWC, chlorophyll and carotenoids content, glucose, alanine and choline were affected by simple effects of species and treatment. Correlation analysis revealed that there is a different correlation between physiological parameters and metabolites in both species. This analysis also revealed that, by ignoring the correlation between malic acid and succinic acid in T. vulgaris, there was no significant correlation between TCA intermediate in both species. According to results, sugars, amino acid and energy metabolism were affected by drought and, among them, TCA intermediates had more alternation in two studied species so, this cycle and its intermediates probably have more prominent role than other identified metabolites in the induction of drought tolerance. |
Databáze: | OpenAIRE |
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