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Dmitrieva VA, Tyutereva EV, Voitsekhovskaja OV. What can reactive oxygen species (ROS) tell us about the action mechanism of herbicides and other phytotoxins? Free Radic Biol Med 2024; 220:92-110. [PMID: 38663829 DOI: 10.1016/j.freeradbiomed.2024.04.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/09/2024]
Abstract
Reactive oxygen species (ROS) are formed in plant cells continuously. When ROS production exceeds the antioxidant capacity of the cells, oxidative stress develops which causes damage of cell components and may even lead to the induction of programmed cell death (PCD). The levels of ROS production increase upon abiotic stress, but also during pathogen attack in response to elicitors, and upon application of toxic compounds such as synthetic herbicides or natural phytotoxins. The commercial value of many synthetic herbicides is based on weed death as result of oxidative stress, and for a number of them, the site and the mechanism of ROS production have been characterized. This review summarizes the current knowledge on ROS production in plants subjected to different groups of synthetic herbicides and natural phytotoxins. We suggest that the use of ROS-specific fluorescent probes and of ROS-specific marker genes can provide important information on the mechanism of action of these toxins. Furthermore, we propose that, apart from oxidative damage, elicitation of ROS-induced PCD is emerging as one of the important processes underlying the action of herbicides and phytotoxins.
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Affiliation(s)
- Valeria A Dmitrieva
- Laboratory of Molecular and Ecological Physiology, Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, 197022, Russia; Laboratory of Phytotoxicology and Biotechnology, All-Russian Institute of Plant Protection, Saint Petersburg, 196608, Russia
| | - Elena V Tyutereva
- Laboratory of Molecular and Ecological Physiology, Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, 197022, Russia
| | - Olga V Voitsekhovskaja
- Laboratory of Molecular and Ecological Physiology, Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, 197022, Russia.
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Mu X, Wang Y, Qian B, Liu G, Xu J, Zeng F. Monitoring of organophosphorus pesticide residues in plant and vegetable tissues by a novel silver nanocluster probe. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:762-770. [PMID: 36661345 DOI: 10.1039/d2ay01903e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
More and more attention has been paid to the problem of pesticide residues, especially in plants and vegetables, due to their close relationship with human health and food safety. Compared to conventional detecting techniques, the fluorescence sensing method has achieved good results for pesticides detection. However, most of the reported fluorescent probes needed two or more steps to achieve the detection of pesticide residues, which greatly limited their application for in vivo imaging and in situ analysis of agricultural residues in plants and vegetables. In this paper, an Ag nanoclusters (AgNCs) based fluorescent probe is developed for one-step detection of pesticide residues. The novel nanoprobe displayed impressive advantages, such as a selective response to glyphosate pesticide, rapid response within 1 min and an ultralow detection limit of 21 nM. The sensing mechanism is attributed to the unique coordination interaction between AgNCs and glyphosate, which not only increased the size of AgNCs to form big Ag particles, but also caused the fluorescence quenching of AgNCs system. Due to its favorable properties, the probe has been successfully applied to imaging the organophosphorus pesticide of glyphosate in the leave tissues of Arabidopsis thaliana and the root tip cells of lettuce for the first time.
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Affiliation(s)
- Xiqiong Mu
- Research & Development Center for Eco-Material and Eco-Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou 730101, P. R. China
| | - Yinquan Wang
- College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou 730101, P. R. China
| | - Bo Qian
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Gang Liu
- Research & Development Center for Eco-Material and Eco-Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
| | - Jian Xu
- Research & Development Center for Eco-Material and Eco-Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
| | - Fankui Zeng
- Research & Development Center for Eco-Material and Eco-Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
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Ladhari A, Andolfi A, DellaGreca M. Physiological and Oxidative Stress Responses of Lettuce to Cleomside A: A Thiohydroximate, as a New Allelochemical from Cleome arabica L. Molecules 2020; 25:E4461. [PMID: 32998390 PMCID: PMC7582273 DOI: 10.3390/molecules25194461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/23/2020] [Accepted: 09/26/2020] [Indexed: 11/16/2022] Open
Abstract
The inclination toward natural products have led the onset for the discovery of new bioactive metabolites that could be targeted for specific therapeutic or agronomic applications. This study aimed to isolate bioactive compounds from Cleome arabica L., and subsequently determine the unexplored mechanism of action of the newly identified compounds on Lactuca sativa L. Chemical investigation of the ethyl acetate fraction of methanolic silique extract of C. arabica afforded seven secondary metabolites belonging to different classes such as flavonoids, triterpene, and a new thiohydroximate derivative, named cleomside A. Among phytotoxic assays, the growth of lettuce was totally inhibited by cleomside A compared to the other identified compounds. This effect was associated with the increased levels of electrolyte leakage, malondialdehyde, and hydrogen peroxide indicating disruption of membrane integrity and induction of oxidative stress. Activities of the antioxidant enzymes SOD, CAT, and APX were also elevated, thereby demonstrating the enhanced generation of reactive oxygen species upon identified allelochemical exposure. Thus, the changes caused by cleomside A described herein can contribute to better understanding the allelochemical actions of thiohydroximate and the potential use of these substances in the production of natural herbicides compared to the other identified flavonoids and triterpene.
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Affiliation(s)
- Afef Ladhari
- Laboratoire GREEN-TEAM (LR17AGR01), Institut National Agronomique de Tunisie (INAT), Universite de Carthage, 43 Avenue Charles Nicolle, Tunis 1082, Tunisia
- Dipartimento di Scienze Chimiche, Università Federico II, Complesso Universitario Monte S. Angelo, via Cintia, 4, 80126 Napoli, Italy; (A.A.); (M.D.)
| | - Anna Andolfi
- Dipartimento di Scienze Chimiche, Università Federico II, Complesso Universitario Monte S. Angelo, via Cintia, 4, 80126 Napoli, Italy; (A.A.); (M.D.)
- BAT Center-Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Napoli ‘Federico II’, 80138 Naples, Italy
| | - Marina DellaGreca
- Dipartimento di Scienze Chimiche, Università Federico II, Complesso Universitario Monte S. Angelo, via Cintia, 4, 80126 Napoli, Italy; (A.A.); (M.D.)
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Physiological and Biochemical Mechanisms Mediated by Allelochemical Isoliquiritigenin on the Growth of Lettuce Seedlings. PLANTS 2020; 9:plants9020245. [PMID: 32070007 PMCID: PMC7076364 DOI: 10.3390/plants9020245] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 12/12/2022]
Abstract
Isoliquiritigenin, a natural chalcone-type flavonoid, has been recognized as an allelochemical with phytotoxicity to lettuce; however, not enough attention has been paid to the mechanisms of this secondary metabolite. In this work, we investigated the physiological and biochemical mechanisms of isoliquiritigenin on lettuce seedlings. The results show that isoliquiritigenin has a concentration-dependent inhibitory effect on radicle elongation of lettuce seedlings, but no significant impact on lettuce germination. Microscopy analyses suggest that the surface morphology of lettuce radicle tips was atrophied and the intracellular tissue structure deformed at high concentrations. Isoliquiritigenin induced the overproduction of reactive oxygen species (ROS), which led to loss of cell viability in the radicle cells. In addition, malondialdehyde (a product of lipid peroxidation) and free proline levels were found to have increased, while chlorophyll content in lettuce seedlings decreased. All these changes suggest that the primary allelopathic mechanism of isoliquiritigenin by which it inhibits radicle elongation in lettuce seedlings might be due to the overproduction of ROS, which causes oxidative damage to membrane lipids and cell death.
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Bouknana D, Jodeh S, Sbaa M, Hammouti B, Arabi M, Darmous A, Slamini M, Haboubi K. A phytotoxic impact of phenolic compounds in olive oil mill wastewater on fenugreek "Trigonella foenum-graecum". ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:405. [PMID: 31144085 DOI: 10.1007/s10661-019-7541-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
The objective of this study is the determination of the chemical structure of nine phenolic molecules responsible for the phytotoxic action on the germination of the plant species "Trigonella foenum-graecum". The phytotoxic action was evaluated by calculating the germination index of the plant species for a period of 5 days of incubation. The analysis of the physicochemical properties of phenolic molecules shows that hydrophobicity is a key factor in phytotoxicity. The sublethal concentration varies as follows: hydroquinone (0.91 mM), 4-aminophenol (0.85 mM), phenol (0.75 mM), gallic acid (0.59 mM), caffeic acid (0.56 mM), 3,5-di-tert-butylcatechol (0,45 mM), quercetin (0.33 mM), oleuropein (0.3 mM), and catechol (0.13 mM). Phytotoxicity varies depending on the nature and position of the substituents on the aromatic ring. The reactivity of this type of molecule is partly linked to the presence of catechol function that can play the main role in phytotoxicity of the Fenugreek.
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Affiliation(s)
- Driss Bouknana
- Department of Chemistry, Laboratory of Applied Analytical Chemistry, Materials and Environment, Faculty of Sciences, University Mohammed first, BP 4808, 60046, Oujda, Morocco.
- Department of Biology, Laboratory of Water Sciences, Ecology and Sustainable Development (LWESD), Faculty of Sciences, University Mohammed first, BC 717, 60000, Oujda, Morocco.
| | - Shehdeh Jodeh
- Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, State of Palestine, Palestine.
| | - Mohamed Sbaa
- Department of Biology, Laboratory of Water Sciences, Ecology and Sustainable Development (LWESD), Faculty of Sciences, University Mohammed first, BC 717, 60000, Oujda, Morocco
| | - Belkheir Hammouti
- Department of Chemistry, Laboratory of Applied Analytical Chemistry, Materials and Environment, Faculty of Sciences, University Mohammed first, BP 4808, 60046, Oujda, Morocco
| | - Mourad Arabi
- Department of Biology, Laboratory of Water Sciences, Ecology and Sustainable Development (LWESD), Faculty of Sciences, University Mohammed first, BC 717, 60000, Oujda, Morocco
| | - Ahmed Darmous
- Department of Biology, Laboratory of Water Sciences, Ecology and Sustainable Development (LWESD), Faculty of Sciences, University Mohammed first, BC 717, 60000, Oujda, Morocco
| | - Maryam Slamini
- Department of Biology, Laboratory of Water Sciences, Ecology and Sustainable Development (LWESD), Faculty of Sciences, University Mohammed first, BC 717, 60000, Oujda, Morocco
| | - Khadija Haboubi
- Head of the Research Team "Materials, Energy and Environment" National School of Applied Sciences, Al Hoceima, Morocco
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Pan L, Li XZ, Yan ZQ, Guo HR, Qin B. Phytotoxicity of umbelliferone and its analogs: Structure-activity relationships and action mechanisms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 97:272-7. [PMID: 26509496 DOI: 10.1016/j.plaphy.2015.10.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 10/10/2015] [Accepted: 10/16/2015] [Indexed: 05/13/2023]
Abstract
Two coumarins, umbelliferone and daphnoretin, were isolated from roots of Stellera chamaejasme L; the former had been identified as one of the main allelochemicals in our previous studies. Both of them have the skeleton of 7-hydroxycoumarin, but showed different phytotoxic effects. Umbelliferone and its analogs were then prepared to investigate the structure-activity relationship of hydroxycoumarins and screened for phytotoxicity. The inhibitory effects varied observably in response to the coumarin derivatives, especially umbelliferone (1), 7-hydroxy-4-methylcoumarin (3) and coumarin (10) displayed strong inhibition of lettuce and two field weeds, Setaria viridis and Amaranthus retroflexus, and compounds 11 and 12 also exhibited phytotoxic activity with species specificity. The number and location of hydroxyl groups were importantly responsible for the phytotoxicity. A C7 hydroxyl group was considered to be a potentially active site and methyl substitution at the C4 position contributed significantly to the activity. The phytotoxic mechanism was briefly studied with umbelliferone by evaluating the reactive oxygen species (ROS) and chlorophylls level in lettuce seedlings. The results showed that umbelliferone induced the accumulation of ROS in the root tip and significantly decreased the chlorophyll content in the leaves. Thus, a ROS-mediated regulation pathway and the inhibition of photosynthesis were definitely involved in the phytotoxicity of umbelliferone.
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Affiliation(s)
- Le Pan
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiu-Zhuang Li
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhi-Qiang Yan
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hong-Ru Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Qin
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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Sukkhaeng S, Sanevas N, Suwanwong S. Nostoc sp. extract induces oxidative stress-mediated root cell destruction in Mimosa pigra L. BOTANICAL STUDIES 2015; 56:3. [PMID: 28510812 PMCID: PMC5432888 DOI: 10.1186/s40529-014-0081-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 12/15/2014] [Indexed: 05/06/2023]
Abstract
BACKGROUND Mimosa pigra is an invasive weed in some regions of South East Asia and Australia. Our previous study has revealed that a cyanobacterium, Nostoc sp., extract can inhibit root growth in M. pigra seedlings. In this study, some physiological processes involve oxidative stress-mediated cell death and root ultrastructure were investigated to clarify the mechanisms of root growth suppression and bioherbicidal potential of the extract. RESULTS Nostoc sp. extract enhanced overproduction of reactive oxygen species (ROS) at 24 h, the intensity of red fluorescence increased at 72 h, and caused a slightly increased H2O2 consistent with the activation of scavenging enzymes (catalase, ascorbic acid peroxidase, glutathione reductase, and peroxidases). This suggests that oxidative stress occurred in the presence of the extract which was supported by increased cell death and lipid peroxidation at 24 h. Reduction of malondialdehyde content and an increase in cell death at 72 h indicated oxidative damage and cellular leakage. Ultrastructural changes were determined at 72 h by scanning electron micrographs which confirmed the damage of epidermal and root cap cells and the disaggregation and destruction of root tip cells. Transmission electron micrographs showed the dissolution of the middle lamella, deposition of some substances in vacuoles, and abnormal mitochondria (swollen mitochondria and indistinct cristae). CONCLUSIONS Nostoc sp. extract enhance oxidative stress by ROS production resulting in lipid peroxidation and massive cell death despite the activation of antioxidative enzymes. Understanding mechanism of action of Nostoc sp. extract will provide information for application of the extract to use as natural herbicide for control of M. pigra.
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Affiliation(s)
- Siriphan Sukkhaeng
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok, 10900 Thailand
| | - Nuttha Sanevas
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok, 10900 Thailand
| | - Srisom Suwanwong
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok, 10900 Thailand
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Yu XZ, Zhang XH. DNA-protein cross-links involved in growth inhibition of rice seedlings exposed to Ga. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:10830-10838. [PMID: 25772880 DOI: 10.1007/s11356-015-4305-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Hydroponic experiments were conducted with rice seedlings (Oryza sativa L. cv. XZX45) exposed to gallium nitrate (Ga(3+)) to investigate the accumulation of Ga in plant tissues and phytotoxic responses. Results showed that phyto-transport of Ga was apparent, and roots were the dominant site for Ga accumulation. The total accumulation rates of Ga responded biphasically to Ga treatments by showing increases at low (1.06-8.52 mg Ga/L) and constants at high (8.52-15.63 mg Ga/L) concentrations, suggesting that accumulation kinetics of Ga followed a typical saturation curve. Higher amount of Ga accumulation in plant tissues led to significant inhibition in relative growth rate and water use efficiency in a dose-dependent manner. DNA-protein cross-links (DPCs) analysis revealed that overaccumulation of Ga in plant tissues positively stimulated formation of DPCs in roots. Likewise, the measure of root cell viability evaluated by Evan blue uptake showed a similar trend. These results suggested that Ga can be absorbed, transported, and accumulated in plant materials of rice seedlings. Overaccumulation of Ga in plant tissues provoked the formation of DPCs in roots, which resulted in cell death and growth inhibition of rice seedlings.
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Affiliation(s)
- Xiao-Zhang Yu
- The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, College of Environmental Science & Engineering, Guilin University of Technology, Guilin, 541004, People's Republic of China,
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Yan ZQ, Wang DD, Ding L, Cui HY, Jin H, Yang XY, Yang JS, Qin B. Mechanism of artemisinin phytotoxicity action: induction of reactive oxygen species and cell death in lettuce seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 88:53-9. [PMID: 25658194 DOI: 10.1016/j.plaphy.2015.01.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 01/29/2015] [Indexed: 05/27/2023]
Abstract
Artemisinin has been recognized as an allelochemical that inhibits growth of several plant species. However, its mode of action is not well clarified. In this study, the mechanism of artemisinin phytotoxicity on lettuce seedlings was investigated. Root and shoot elongation of lettuce seedlings were inhibited by artemisinin in a concentration-dependent manner. The compound effectively arrested cell division and caused loss of cell viability in root tips of lettuce. Overproduction of reactive oxygen species (ROS) was induced by artemisinin. Lipid peroxidation, proline overproduction and reduction of chlorophyll content in lettuce seedlings were found after treatments. These results suggested that artemisinin could induce ROS overproduction, which caused membrane lipids peroxidation and cell death, and impacted mitosis and physiological processes, resulting in growth inhibition of receptor plants.
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Affiliation(s)
- Zhi-Qiang Yan
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Dan-Dan Wang
- College of Life Science, Northwest Normal University, Lanzhou 730070, China
| | - Lan Ding
- College of Life Science, Northwest Normal University, Lanzhou 730070, China
| | - Hai-Yan Cui
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hui Jin
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Key Laboratory of Tobacco Diseases and Insect Pests Monitoring Controlling and Integrated Management, Institute of Tobacco Research, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Xiao-Yan Yang
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jian-She Yang
- College of Life Science, Northwest Normal University, Lanzhou 730070, China
| | - Bo Qin
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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Babula P, Vaverkova V, Poborilova Z, Ballova L, Masarik M, Provaznik I. Phytotoxic action of naphthoquinone juglone demonstrated on lettuce seedling roots. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2014; 84:78-86. [PMID: 25240266 DOI: 10.1016/j.plaphy.2014.08.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 08/20/2014] [Indexed: 06/03/2023]
Abstract
Juglone, 5-hydroxy-1,4-naphthoquinone, is the plant secondary metabolite with allelopathic properties, which was isolated especially from the plant species belonging to family Juglandaceae A. Rich. ex Kunth (walnut family). The mechanism of phytotoxic action of juglone was investigated on lettuce seedlings Lactuca sativa L. var. capitata L. cv. Merkurion by determining its effect at different levels. We have found that juglone inhibits mitosis (mitotic index 8.5 ± 0.6% for control versus 2.2 ± 0.9% for 250 μM juglone), changes mitotic phase index with accumulation of the cells in prophase (56.5 ± 2.6% for control versus 85.3 ± 5.0% for 250 μM juglone), and decreases meristematic activity in lettuce root tips (51.07 ± 3.62% for control versus 5.27 ± 2.29% for 250 μM juglone). In addition, juglone induced creation of reactive oxygen species and changed levels of reactive nitrogen species. Amount of malondialdehyde, a product of lipid peroxidation, increased from 24.0 ± 4.0 ng g(-1) FW for control to 55.5 ± 5.4 ng g(-1) FW for 250 μM juglone. We observed also changes in cellular structure, especially changes in the morphology of endoplasmic reticulum. Reactive oxygen species induced damage of plasma membrane. All these changes resulted in the disruption of the mitochondrial membrane potential, increase in free intracellular calcium ions, and DNA fragmentation and programmed cell death that was revealed by two methods, TUNEL test and DNA electrophoresis. The portion of TUNEL-positive cells increase from 0.96 ± 0.5% for control to 7.66 ± 1.5% for 250 μM juglone. Results of the study indicate complex mechanism of phytotoxic effect of juglone in lettuce root tips and may indicate mechanism of allelopathic activity of this compound.
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Affiliation(s)
- Petr Babula
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, CZ-61242 Brno, Czech Republic; International Clinical Research Center - Biomedical Engineering Center, St. Anne's University Hospital Brno, Pekarska 53, Brno, CZ-656 91, Czech Republic.
| | - Veronika Vaverkova
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, CZ-61242 Brno, Czech Republic
| | - Zuzana Poborilova
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, CZ-61242 Brno, Czech Republic
| | - Ludmila Ballova
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, CZ-61242 Brno, Czech Republic
| | - Michal Masarik
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, CZ-625 00 Brno, Czech Republic
| | - Ivo Provaznik
- International Clinical Research Center - Biomedical Engineering Center, St. Anne's University Hospital Brno, Pekarska 53, Brno, CZ-656 91, Czech Republic; Department of Biomedical Engineering, Brno University of Technology, Kolejni 4, Brno, CZ-612 00, Czech Republic
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Portmann C, Sieber S, Wirthensohn S, Blom JF, Da Silva L, Baudat E, Kaiser M, Brun R, Gademann K. Balgacyclamides, antiplasmodial heterocyclic peptides from Microcystis aeruguinosa EAWAG 251. JOURNAL OF NATURAL PRODUCTS 2014; 77:557-562. [PMID: 24392715 DOI: 10.1021/np400814w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The isolation and structural characterization of three new heterocyclic and macrocyclic peptides, balgacyclamides A-C, from Microcystis aeruginosa EAWAG 251 are reported. The constitutions were determined by 2D-NMR methods and mass spectrometry, and the configurations were assigned after ozonolysis and hydrolysis by HPLC-MS methods using Marfey's method as well as GC-MS using authentic standards. Balgacyclamides A and B were active against Plasmodium falciparum K1 in the low micromolar range, while displaying low toxicity to rat myoblasts.
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Affiliation(s)
- Cyril Portmann
- Chemical Synthesis Laboratory, SB-ISIC-LSYNC, Swiss Federal Institute of Technology (EPFL) , CH-1015 Lausanne, Switzerland
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