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Mehravi S, Hanifei M, Gholizadeh A, Khodadadi M. Water deficit stress changes in physiological, biochemical and antioxidant characteristics of anise (Pimpinella anisum L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107806. [PMID: 37379658 DOI: 10.1016/j.plaphy.2023.107806] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 05/14/2023] [Accepted: 05/29/2023] [Indexed: 06/30/2023]
Abstract
This study was designed to evaluate the impact of water deficit stress on the seed yield and its components, physiological functions, fatty acid content and compositions, essential oil (EO) content and compositions, phenolic acids and flavonoids amounts, and antioxidant activities of anise seeds. Plants evaluations were performed under well-watered (WW), moderate water deficit stressed (MWDS), and severe water deficit stressed (SWDS). The results revealed that SWDS significantly reduced seed yield, branch number per plant, seed number, umbel number, and thousand seed weight. Water deficit stress also caused a decrease in chlorophyll content, relative water content, quantum efficiency of photosystem II, and cell membrane stability, while increasing leaf temperature. The analysis of fatty acid composition indicated that petroselinic acid was the main fatty acid and its percentage increased by 8.75% and 14.60% under MWDS and SWDS, respectively. Furthermore, MWDS increased the EO content by 1.48 times, while it decreased by 41.32% under SWDS. The chemotype of EO was altered from t-anethole/estragole in WW seeds to t-anethole/β-bisabolene in treated seeds. Higher levels of total phenolics were detected in stressed seeds. Water deficit stress increased the amount of the major class, naringin, by 1.40 and 1.26 times under MWDS and SWDS. The evaluation of antioxidant activity through reducing power, DPPH, and chelating ability assays indicated that stressed seeds exhibited the highest activity. The study's findings suggest that the application of drought stress before harvesting can regulate the production of bioactive compounds, which can affect the industrial and nutritional values of anise seeds.
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Affiliation(s)
- Shaghayegh Mehravi
- School of Biological Sciences, University of Western Australia, Perth WA 6009, Australia.
| | - Mehrdad Hanifei
- Department of Plant Genetics and Breeding, Faculty of Agriculture, Tarbiat Modares University, Tehran, C.P. 14115-336, Iran.
| | - Amir Gholizadeh
- Crop and Horticultural Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, C.P. 4915677555, Iran.
| | - Mostafa Khodadadi
- Seed and Plant Improvement Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, C.P. 33151-31359, Iran.
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Jafari M, Shahsavar A. The Effect of Foliar Application of Melatonin on Changes in Secondary Metabolite Contents in Two Citrus Species Under Drought Stress Conditions. FRONTIERS IN PLANT SCIENCE 2021; 12:692735. [PMID: 34567024 PMCID: PMC8455919 DOI: 10.3389/fpls.2021.692735] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/28/2021] [Indexed: 05/26/2023]
Abstract
Plant secondary metabolites are compounds that play an important role in plant interactions and defense. Persian lime and Mexican lime as the two most important sour lime varieties with high levels of secondary metabolites, are widely cultivated in tropical and subtropical areas. Melatonin is a pleiotropic molecule that plays a key role in protecting plants against drought stress through regulating the secondary metabolite biosynthesis pathway. This study was performed as a factorial experiment consisting of three factors in a completely randomized design (CRD), including four concentrations of melatonin (0, 50, 100, and 150 μM), three levels of drought stress [100% (control), 75% (moderate stress), and 40% (severe stress) field capacity (FC)], and two Citrus cultivars. The experiment was conducted for 60 days in a greenhouse condition. Based on the results of this study under severe drought stress, melatonin-treated crops had higher total flavonoid and total phenolic contents than the untreated crops. The highest level of essential oils components was observed on 100 μM foliar application of melatonin under severe drought stress in both varieties. The main component of the essential oil was limonene in both Citrus species. Moreover, based on the analysis of the results, hesperidin was the main polyphenol in both varieties. Since the use of melatonin often increases the production of secondary metabolites, this study can be considered as a very effective method for controlling the adverse effects of drought stress in citrus for both industrial and horticultural aims.
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Affiliation(s)
| | - Alireza Shahsavar
- Department of Horticultural Science, College of Agriculture, Shiraz University, Shiraz, Iran
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Yadav B, Jogawat A, Rahman MS, Narayan OP. Secondary metabolites in the drought stress tolerance of crop plants: A review. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101040] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Jogawat A, Yadav B, Lakra N, Singh AK, Narayan OP. Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review. PHYSIOLOGIA PLANTARUM 2021; 172:1106-1132. [PMID: 33421146 DOI: 10.1111/ppl.13328] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/08/2020] [Accepted: 01/01/2021] [Indexed: 05/21/2023]
Abstract
Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis and their signaling networks, which further initiate the biosynthesis of secondary metabolites (SMs). Roots sense drought stress, the signal travels to the above-ground tissues to induce systemic phytohormones signaling. The systemic signals further trigger the biosynthesis of SMs and stomatal closure to prevent water loss. SMs primarily scavenge reactive oxygen species (ROS) to protect plants from lipid peroxidation and also perform additional defense-related functions. Moreover, drought-induced volatile SMs can alert the plant tissues to perform drought stress mitigating functions in plants. Other phytohormone-induced stress responses include cell wall and cuticle thickening, root and leaf morphology alteration, and anatomical changes of roots, stems, and leaves, which in turn minimize the oxidative stress, water loss, and other adverse effects of drought. Exogenous applications of phytohormones and genetic engineering of phytohormones signaling and biosynthesis pathways mitigate the drought stress effects. Direct modulation of the SMs biosynthetic pathway genes or indirect via phytohormones' regulation provides drought tolerance. Thus, phytohormones and SMs play key roles in plant development under the drought stress environment in crop plants.
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Affiliation(s)
| | - Bindu Yadav
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Nita Lakra
- Department of Biotechnology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Amit Kumar Singh
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Om Prakash Narayan
- Biomedical Engineering Department, Tufts University, Medford, Massachusetts, USA
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Saffariha M, Jahani A, Jahani R, Latif S. Prediction of hypericin content in Hypericum perforatum L. in different ecological habitat using artificial neural networks. PLANT METHODS 2021; 17:10. [PMID: 33499873 PMCID: PMC7836460 DOI: 10.1186/s13007-021-00710-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/17/2021] [Indexed: 05/05/2023]
Abstract
BACKGROUND Hypericum is an important genus in the family Hypericaceae, which includes 484 species. This genus has been grown in temperate regions and used for treating wounds, eczema and burns. The aim of this study was to predict the content of hypericin in Hypericum perforatum in varied ecological and phenological conditions of habitat using artificial neural network techniques [MLP (Multi-Layer Perceptron), RBF (Radial Basis Function) and SVM (Support Vector Machine)]. RESULTS According to the results, the MLP model (R2 = 0.87) had an advantage over RBF (R2 = 0.8) and SVM (R2 = 0.54) models and it was relatively accurate in predicting hypericin content in H. perforatum based on the ecological conditions of site including soil types, its characteristics and plant phenological stages of habitat. The results of sensitivity analysis revealed that phenological stages, hill aspects, total nitrogen, altitude and organic carbon are the most influential factors that have an integral effect on the content of hypericin. CONCLUSIONS The designed graphical user interface will help pharmacognosist, manufacturers and producers of medicinal plants and so on to run the MLP model on new data to easily discover the content of hypericin in H. perforatum by entering ecological conditions of site, soil characteristics and plant phenological stages.
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Affiliation(s)
- Maryam Saffariha
- Department of Reclamation of Arid and Mountainous Regions, College of Natural Resources, University of Tehran, Tehran, Iran
| | - Ali Jahani
- Faculty of Natural Environment and Biodiversity Department, College of Environment and Research Center of Environment and Sustainable Development, Standard Square, Karaj, Iran.
| | - Reza Jahani
- Department of Pharmacology and Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajid Latif
- Graham Centre of Agricultural Innovation, Charles Sturt University, Wagga Wagga, Australia
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Thomsen MO, Christensen LP, Grevsen K. Harvest Strategies for Optimization of the Content of Bioactive Alkamides and Caffeic Acid Derivatives in Aerial Parts and in Roots of Echinacea purpurea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11630-11639. [PMID: 30350973 DOI: 10.1021/acs.jafc.8b03420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Aerial parts and roots of Echinacea purpurea were harvested consecutively in order to find the best strategy for harvest of both types of plant material for an optimal content of bioactive alkamides and caffeic acid derivatives. Four caffeic acid derivatives and 15 alkamides were identified and quantified. The aerial parts were harvested in bud, bloom, and wilting stage and the roots were harvested 1 week, 1 month, and 3 months after each harvest of aerial parts. The highest yield per area of both alkamides and caffeic acid derivatives is achieved when the aerial parts are harvested late (wilting stage). To obtain an optimal content of alkamides and caffeic acid derivatives it is not recommendable to harvest the aerial parts and the roots in the same year. If the aerial parts must be harvested, the roots should be harvested 1 week after because this will result in the most optimal concentration of bioactive compounds in both products.
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Affiliation(s)
- Maria O Thomsen
- Department of Food Science, Faculty of Science and Technology , Aarhus University , Kirstinebjergvej 10 , DK-5792 Aarslev , Denmark
| | - Lars P Christensen
- Department of Chemistry and Bioscience, Faculty of Engineering and Science , Aalborg University , Fredrik Bajers Vej 7H , DK-9220 Aalborg Ø , Denmark
| | - Kai Grevsen
- Department of Food Science, Faculty of Science and Technology , Aarhus University , Kirstinebjergvej 10 , DK-5792 Aarslev , Denmark
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Sharifi-Rad M, Mnayer D, Morais-Braga MFB, Carneiro JNP, Bezerra CF, Coutinho HDM, Salehi B, Martorell M, Del Mar Contreras M, Soltani-Nejad A, Uribe YAH, Yousaf Z, Iriti M, Sharifi-Rad J. Echinacea plants as antioxidant and antibacterial agents: From traditional medicine to biotechnological applications. Phytother Res 2018; 32:1653-1663. [PMID: 29749084 DOI: 10.1002/ptr.6101] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 04/01/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022]
Abstract
The genus Echinacea consists of 11 taxa of herbaceous and perennial flowering plants. In particular, Echinacea purpurea (L.) Moench is widely cultivated all over the United States, Canada, and in Europe, exclusively in Germany, for its beauty and reported medicinal properties. Echinacea extracts have been used traditionally as wound healing to improve the immune system and to treat respiratory symptoms caused by bacterial infections. Echinacea extracts have demonstrated antioxidant and antimicrobial activities, and to be safe. This survey aims at reviewing the medicinal properties of Echinacea species, their cultivation, chemical composition, and the potential uses of these plants as antioxidant and antibacterial agents in foods and in a clinical context. Moreover, the factors affecting the chemical composition of Echinacea spp. are also covered.
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Affiliation(s)
- Mehdi Sharifi-Rad
- Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol, Iran
| | - Dima Mnayer
- Department of Agricultural Engineering and Veterinary Medicine, Lebanese University, Beirut, Lebanon
| | - Maria Flaviana Bezerra Morais-Braga
- Laboratório de Microbiologia e Biologia Molecular - LMBM, Departamento de Química Biológica - DQB, Universidade Regional do Cariri - URCA, Av. Cel. Antonio Luiz, 1161. Pimenta, Crato, CE, Brazil
| | - Joara Nályda Pereira Carneiro
- Laboratório de Microbiologia e Biologia Molecular - LMBM, Departamento de Química Biológica - DQB, Universidade Regional do Cariri - URCA, Av. Cel. Antonio Luiz, 1161. Pimenta, Crato, CE, Brazil
| | - Camila Fonseca Bezerra
- Laboratório de Microbiologia e Biologia Molecular - LMBM, Departamento de Química Biológica - DQB, Universidade Regional do Cariri - URCA, Av. Cel. Antonio Luiz, 1161. Pimenta, Crato, CE, Brazil
| | - Henrique Douglas Melo Coutinho
- Laboratório de Microbiologia e Biologia Molecular - LMBM, Departamento de Química Biológica - DQB, Universidade Regional do Cariri - URCA, Av. Cel. Antonio Luiz, 1161. Pimenta, Crato, CE, Brazil
| | - Bahare Salehi
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Miquel Martorell
- Department of Nutrition and Dietetics, School of Pharmacy, University of Concepcion, Concepcion, Chile
| | - María Del Mar Contreras
- Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, Córdoba, E-14071, Spain
| | - Azam Soltani-Nejad
- Department of Genetics and Biotechnology, Osmania University, Hyderabad, India
| | | | - Zubaida Yousaf
- Department of Botany, Lahore College for Women University, Lahore, Pakistan
| | - Marcello Iriti
- Department of Agricultural and Environmental Sciences, Milan State University, Milan, Italy
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Chemistry, Richardson College for the Environmental Science Complex, The University of Winnipeg, Winnipeg, MB, Canada
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Biotechnological production of caffeic acid derivatives from cell and organ cultures of Echinacea species. Appl Microbiol Biotechnol 2014; 98:7707-17. [DOI: 10.1007/s00253-014-5962-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 07/14/2014] [Accepted: 07/15/2014] [Indexed: 02/06/2023]
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9
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The determination of the caffeic acid derivatives of Echinacea purpurea aerial parts under various extraction conditions by supercritical fluid extraction (SFE). J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Fernando Rolim de Almeida L, de Oliveira Portella R, Facanali R, Ortiz Mayo Marques M, Frei F. Dry and wet seasons set the phytochemical profile of theCopaifera langsdorffiiDesf. essential oils. JOURNAL OF ESSENTIAL OIL RESEARCH 2014. [DOI: 10.1080/10412905.2014.889050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Leiss KA, Cristofori G, van Steenis R, Verpoorte R, Klinkhamer PGL. An eco-metabolomic study of host plant resistance to Western flower thrips in cultivated, biofortified and wild carrots. PHYTOCHEMISTRY 2013; 93:63-70. [PMID: 23583013 DOI: 10.1016/j.phytochem.2013.03.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 03/06/2013] [Accepted: 03/13/2013] [Indexed: 05/20/2023]
Abstract
Domestication of plants and selection for agronomic traits may reduce plant secondary defence metabolites relative to their ancestors. Carrot (Daucus carota L.) is an economically important vegetable. Recently, carrot was developed as a functional food with additional health-promoting functions. Biofortified carrots contain increased concentrations of chlorogenic acid as an antioxidant. Chlorogenic acid is involved in host plant resistance to Western Flower Thrips (Frankliniella occidentalis), one of the key agri- and horticultural pests worldwide. The objective of this study was to investigate quantitative host plant resistance to thrips in carrot and to identify candidate compounds for constitutive resistance. As such we explored whether cultivated carrot is more vulnerable to herbivore attack compared to wild carrot. We subjected a set of 14 biofortified, cultivated and wild carrot genotypes to thrips infestation. We compared morphological traits and leaf metabolic profiles of the three most resistant and susceptible carrots using nuclear magnetic resonance spectroscopy (NMR). In contrast to our expectation, wild carrots were not more resistant to thrips than cultivated ones. The most thrips resistant carrot was the cultivar Ingot which is known to be tolerant against carrot root fly (Psila rosae). Biofortified carrots were not resistant to thrips. Plant size, leaf area and number of leaf hairs did not differ between resistant and susceptible carrots. The metabolic profiles of the leaves of resistant carrots were significantly different from those of susceptible carrots. The leaves of resistant carrots contained higher amounts of the flavanoid luteolin, the phenylpropanoid sinapic acid and the amino acid β-alanine. The negative effect of these compounds on thrips was confirmed using in-vitro bioassays. Our results have potential implications for carrot breeders. The natural variation of metabolites present in cultivated carrots can be used for improvement of thrips resistance. This is especially promising in view of the candidate compounds we identified since they do not only confer a negative effect on thrips but as antioxidants also play an important role in the improvement of human health.
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Affiliation(s)
- Kirsten A Leiss
- Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands.
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Selmar D, Kleinwächter M. Stress enhances the synthesis of secondary plant products: the impact of stress-related over-reduction on the accumulation of natural products. PLANT & CELL PHYSIOLOGY 2013; 54:817-26. [PMID: 23612932 DOI: 10.1093/pcp/pct054] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Spice and medicinal plants grown under water deficiency conditions reveal much higher concentrations of relevant natural products compared with identical plants of the same species cultivated with an ample water supply. For the first time, experimental data related to this well-known phenomenon have been collected and a putative mechanistic concept considering general plant physiological and biochemical aspects is presented. Water shortage induces drought stress-related metabolic responses and, due to stomatal closure, the uptake of CO2 decreases significantly. As a result, the consumption of reduction equivalents (NADPH + H(+)) for CO2 fixation via the Calvin cycle declines considerably, generating a large oxidative stress and an oversupply of reduction equivalents. As a consequence, metabolic processes are shifted towards biosynthetic activities that consume reduction equivalents. Accordingly, the synthesis of reduced compounds, such as isoprenoids, phenols or alkaloids, is enhanced.
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Affiliation(s)
- Dirk Selmar
- Institute for Plant Biology, Technische Universität Braunschweig, Mendelssohnstraße 4, D-38106 Braunschweig, Germany.
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El Sherif F, Khattab S, Ibrahim AK, Ahmed SA. Improved silymarin content in elicited multiple shoot cultures of Silybum marianum L. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2013; 19:127-136. [PMID: 24381444 PMCID: PMC3550681 DOI: 10.1007/s12298-012-0141-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Silybum marianum L. extracts are being used as antihepatotoxic therapy for liver diseases. Silymarin is a polyphenolic flavonoid mixture isolated from milk thistle which is believed to be responsible for the plant's hepatoprotective action. Regeneration of Silybum marianum plants from shoot tip explants and assessment of their morphogenic potential, silymarin total concentration and its major constituents upon exposure to medium composition alteration and different elicitors' application was targeted. Different concentrations of NaCl, quercetin, gamma irradiation and dried fungal extracts were used to elicit silymarin production in the cultures. The chemical composition of silymarin and its total concentration was investigated through HPLC at all the experiment stages. Multiple shoots were recorded after 3 weeks of culture on MS medium containing various concentrations of BA and/or NAA. IAA was more effective than NAA and IBA in inducing robust roots in shoot cultures. The flowering plants recorded 20 % and 40 % of the total plants number in the multiplication and rooting stages respectively. The highest total silymarin concentration reached its peak with (10 Gy) gamma-irradiation to be 6.598 % dry weight in the in vitro regenerated shoot tip explants. The in vitro grown flowers showed 1.7 times more sylimarin productivity as compared to that of the wild grown congruent.
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Affiliation(s)
- Fadia El Sherif
- />Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, 41522 Egypt
| | - Salah Khattab
- />Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, 41522 Egypt
| | - Amany K. Ibrahim
- />Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522 Egypt
| | - Safwat A. Ahmed
- />Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522 Egypt
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Torras-Claveria L, Jáuregui O, Codina C, Tiburcio AF, Bastida J, Viladomat F. Analysis of phenolic compounds by high-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry in senescent and water-stressed tobacco. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 182:71-8. [PMID: 22118617 DOI: 10.1016/j.plantsci.2011.02.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 02/17/2011] [Accepted: 02/22/2011] [Indexed: 05/11/2023]
Abstract
Evaluation of a significant part of the phenylpropanoid pathway metabolites is facilitated by the fast high-performance liquid chromatography with electrospray ionization tandem mass spectrometry (LC-MS/MS) analytical method. The technology described was applied in tobacco plants (Nicotiana tabacum L. cv. Wisconsin) to identify 20 phenolic compounds and to detect differences in phenylpropanoid profiles in two types of experiments. In the first one, senescent and non-senescent parts of flowering plants were compared, while in the second, watered plants were compared with water-stressed young plants. The 20 identified phenolic compounds were: seven hydroxycinnamoylquinic acids, seven hydroxycinnamic acid glucosides, one salicylic acid glucoside, two conjugated flavonols with disaccharides, and three hydroxycinnamic acid amides (HCAA) of putrescine. In general, the levels of phenylpropanoid compounds increased under water stress or senescent conditions, with the exception of HCAA, which decreased in senescent samples, and 4-O-p-coumaroylquinic acid and trihydroxycinamic acid-O-glucoside, which did not change in both experiments. The main product in all the samples was 5-O-caffeoylquinic acid (neochlorogenic acid). Another compound, kaempferol-7-O-neohesperidoside, was tentatively identified for the first time in tobacco plants. This method, which can be applied in other plant species, allows a simple and efficient comparative study of metabolite profile variations (qualitative and quantitative) in response to different physiological and/or environmental plant situations.
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Affiliation(s)
- Laura Torras-Claveria
- Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona, Avinguda Joan XXIII s/n, Avda. Diagonal, 643, 08028 Barcelona, Catalonia, Spain
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Giorgi A, Madeo M, Speranza G, Cocucci M. Influence of environmental factors on composition of phenolic antioxidants of Achillea collina Becker ex Rchb. Nat Prod Res 2011; 24:1546-59. [PMID: 20835956 DOI: 10.1080/14786419.2010.490656] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Effects of environmental growth conditions on the antioxidant capacity, total phenolic content and composition of Achillea collina Becker ex Rchb. were investigated. Methanol extracts and infusions obtained from leaves and inflorescences of plants cultivated in the Italian Alps at two different altitudes (600 and 1050 m a.s.l.) were evaluated. Infusions exhibited the highest antioxidant capacity (1/IC(50) values from 4.35 ± 0.72 to 8.90 ± 0.74), total phenolic content (from 31.39 ± 4.92 to 49.36 ± 5.70 mg gallic acid equivalents (GAE) g(-1) DW), chlorogenic acid (from 9.21 ± 1.52 to 31.27 ± 6.88 mg g(-1) DW), 3,5-di-O-caffeoylquinic acid (from 12.28 ± 3.25 to 25.13 ± 1.99 mg g(-1) DW) and 4,5-di-O-caffeoylquinic acid (from 7.38 ± 1.01 to 12.78 ± 2.61 mg g(-1) DW) content. Climate (as influenced by altitude) was shown to be the main environmental factor influencing yarrow composition and properties. Leaf extracts from the higher experimental site showed a 2-4-fold increase of chlorogenic acid level. Achillea collina can be considered as a very good source of bioactive phenolic compounds, and growing it at high altitude may constitute an effective way to significantly enhance its quality for both medicinal and nutritional uses.
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Affiliation(s)
- Annamaria Giorgi
- Dipartimento di Produzione Vegetale, Universita degli Studi di Milano, 20133 Milano, Italy.
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Condori J, Sivakumar G, Hubstenberger J, Dolan MC, Sobolev VS, Medina-Bolivar F. Induced biosynthesis of resveratrol and the prenylated stilbenoids arachidin-1 and arachidin-3 in hairy root cultures of peanut: Effects of culture medium and growth stage. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2010; 48:310-8. [PMID: 20138774 DOI: 10.1016/j.plaphy.2010.01.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 01/08/2010] [Accepted: 01/12/2010] [Indexed: 05/23/2023]
Abstract
Previously, we have shown that hairy root cultures of peanut provide a controlled, sustainable and scalable production system that can be induced to produce stilbenoids. However to leverage peanut hairy roots to study the biosynthesis of this polyphenolic biosynthetic pathway, growing conditions and elicitation kinetics of these tissue cultures must be defined and understood. To this end, a new peanut cv. Hull hairy root (line 3) that produces resveratrol and its prenylated analogues arachidin-1 and arachidin-3 upon sodium acetate-mediated elicitation was established. Two culture media were compared for impact on root growth and stilbenoid biosynthesis/secretion. The levels of ammonium, nitrate, phosphate and residual sugars were monitored along growth and elicitation period. A modified MS (MSV) medium resulted in higher root biomass when compared to B5 medium. The stilbenoid profile after elicitation varied depending on the age of the culture (6, 9, 12, and 15-day old). After elicitation at day 9 (exponential growth in MSV medium), over 90% of the total resveratrol, arachidin-1 and arachidin-3 accumulated in the medium. Our studies demonstrate the benefits of the hairy root culture system to study the biosynthesis of stilbenoids including valuable prenylated polyphenolic compounds.
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Affiliation(s)
- Jose Condori
- Arkansas Biosciences Institute, Arkansas State University, P.O. Box 639, State University, AR 72467, USA
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17
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Spelman K, Wetschler MH, Cech NB. Comparison of alkylamide yield in ethanolic extracts prepared from fresh versus dry Echinacea purpurea utilizing HPLC-ESI-MS. J Pharm Biomed Anal 2009; 49:1141-9. [PMID: 19321283 DOI: 10.1016/j.jpba.2009.02.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Revised: 01/30/2009] [Accepted: 02/10/2009] [Indexed: 11/25/2022]
Abstract
Echinacea purpurea (L.) Moench, a top selling botanical medicine, is currently of considerable interest due to immunomodulatory, anti-inflammatory, antiviral and cannabinoid receptor 2 (CB2) binding activities of its alkylamide constituents. The purpose of these studies was to comprehensively profile the alkylamide (alkamide) content of E. purpurea root, and to compare yields of alkylamide constituents resulting from various ethanolic extraction procedures commonly employed by the dietary supplements industry. To accomplish this goal, a high performance liquid chromatography-electrospray ionization mass spectrometry (HPLC-ESI-MS) method was validated for quantitative analysis of several E. purpurea alkylamides. Using this method, at least 15 alkylamides were identified and it was shown that fresh and dry E. purpurea extracts prepared from equivalent amounts (dry weight) of roots, with exceptions, exhibited similar yield of specific alkylamides. However, the amount of total dissolved solids in the dry extract was higher (by 38%) than the fresh extract. Two extracts prepared from dried roots at different ratios of root:solvent (1:5, w:v and 1:11, w:v) were similar in yield of total dissolved solids, but, there were differences in quantities of specific alkylamides extracted using these two root:solvent ratios. In addition, the important bioactive dodecatetraenoic acid isobutylamides are fully extracted from dry E. purpurea root in 2 days, suggesting that the manufacturing practice of macerating Echinacea extracts for weeks may be unnecessary for optimal alkylamide extraction. Finally, the identification of a new alkylamide has been proposed. These results demonstrate the differences of the described extractions and utility of the analytical methods used to determine the wide-ranging individual alkylamide content of commonly consumed Echinacea extracts.
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Affiliation(s)
- Kevin Spelman
- Department of Chemistry and Biochemistry, The University of North Carolina Greensboro, P.O. Box 26170, Greensboro, NC 27402, USA
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Barnes J, Anderson LA, Gibbons S, Phillipson JD. Echinacea species (Echinacea angustifolia (DC.) Hell., Echinacea pallida (Nutt.) Nutt.,Echinacea purpurea (L.) Moench): a review of their chemistry, pharmacology and clinical properties. J Pharm Pharmacol 2006; 57:929-54. [PMID: 16102249 DOI: 10.1211/0022357056127] [Citation(s) in RCA: 222] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This paper reviews the chemistry, pharmacology and clinical properties of Echinacea species used medicinally. The Echinacea species Echinacea angustifolia, Echinacea pallida and Echinacea purpurea have a long history of medicinal use for a variety of conditions, particularly infections, and today echinacea products are among the best-selling herbal preparations in several developed countries. Modern interest in echinacea is focused on its immunomodulatory effects, particularly in the prevention and treatment of upper respiratory tract infections. The chemistry of Echinacea species is well documented, and several groups of constituents, including alkamides and caffeic acid derivatives, are considered important for activity. There are, however, differences in the constituent profile of the three species. Commercial echinacea samples and marketed echinacea products may contain one or more of the three species, and analysis of samples of raw material and products has shown that some do not meet recognized standards for pharmaceutical quality. Evidence from preclinical studies supports some of the traditional and modern uses for echinacea, particularly the reputed immunostimulant (or immunomodulatory) properties. Several, but not all, clinical trials of echinacea preparations have reported effects superior to those of placebo in the prevention and treatment of upper respiratory tract infections. However, evidence of efficacy is not definitive as studies have included different patient groups and tested various different preparations and dosage regimens of echinacea. On the basis of the available limited safety data, echinacea appears to be well tolerated. However, further investigation and surveillance are required to establish the safety profiles of different echinacea preparations. Safety issues include the possibility of allergic reactions, the use of echinacea by patients with autoimmune diseases and the potential for echinacea preparations to interact with conventional medicines.
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Affiliation(s)
- Joanne Barnes
- Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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