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Kobylińska A, Posmyk MM. Melatonin Protects Tobacco Suspension Cells against Pb-Induced Mitochondrial Dysfunction. Int J Mol Sci 2021; 22:13368. [PMID: 34948164 PMCID: PMC8703733 DOI: 10.3390/ijms222413368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
Recent studies have shown that melatonin is an important molecule in plant physiology. It seems that the most important is that melatonin effectively eliminates oxidative stress (direct and indirect antioxidant) and switches on different defence strategies (preventive and interventive actions) during environmental stresses. In the presented report, exogenous melatonin potential to protect Nicotiana tabacum L. line Bright Yellow 2 (BY-2) exposed to lead against death was examined. Analyses of cell proliferation and viability, the level of intracellular calcium, changes in mitochondrial membrane potential (ΔΨm) as well as possible translocation of cytochrome c from mitochondria to cytosol and subsequent caspase-like proteolytic activity were conducted. Our results indicate that pretreatment BY-2 with melatonin protected tobacco cells against mitochondrial dysfunction and caspase-like activation caused by lead. The findings suggest the possible role of this indoleamine in the molecular mechanism of mitochondria, safeguarding against potential collapse and cytochrome c release. Thus, it seems that applied melatonin acted as an effective factor, promoting survival and increasing plant tolerance to lead.
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Affiliation(s)
| | - Małgorzata Maria Posmyk
- Department of Plant Ecophysiology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Łódź, Poland;
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Eskandari H, Ehsanpour AA, Al-Mansour N, Bardania H, Sutherland D, Mohammad-Beigi H. Rosmarinic acid inhibits programmed cell death in Solanum tuberosum L. calli under high salinity. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 147:54-65. [PMID: 31841962 DOI: 10.1016/j.plaphy.2019.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 11/10/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
Oxidative stress induced by salinity is a prime cause of cell death when Na+ toxicity becomes unbearable. We explored the effect of rosmarinic acid (RA) on the Solanum tuberosum L. cv. Desiree calli against salt-induced programmed cell death (PCD). We showed that PCD events were triggered in calli under 250 mM NaCl by the loss of plasma membrane integrity as measured by the amount of malondialdehyde (MDA) in the cytoplasm, the degree of DNA degradation resulting from the cleavage of nuclear DNA into oligonucleosomal fragments in apoptotic cells, the presence of TUNEL-positive nuclei (90 ± 0.005%) damage in genomic DNA, and activation of caspase 3-like protease. Callus Formation Medium (CFM) supplemented with RA led to the suppression of salt-induced cell death and a dramatic decrease in the MDA level and frequency of TUNEL-positive nuclei under salinity to 4 ± and 7.3 ± % in the presence of 50 and 350 μM RA, respectively. The application of RA also resulted in an increase in GSH content and maintenance of a high GSH/GSSG ratio. Interestingly, these reductions in PCD were accompanied by inhibiting caspase 3-like protease activities due to RA under salinity. Molecular docking predicted high binding energies of RA for binding to subtilisin-like protease (StSCTc-3), which has caspase-3 like activity in Solanum tuberosum, near the active site. This finding supports the notion of a role for RA in PCD protection in plants, which is consistent with earlier reports in animal cells.
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Affiliation(s)
- Hoda Eskandari
- Department of Biology, University of Isfahan, Isfahan, Iran; Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | | | - Naemah Al-Mansour
- Faculty of Science, Department of Biological Sciences, University of Kuwait, Kuwait.
| | - Hassan Bardania
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Duncan Sutherland
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | - Hossein Mohammad-Beigi
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
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Hüve K, Bichele I, Rasulov B, Niinemets U. When it is too hot for photosynthesis: heat-induced instability of photosynthesis in relation to respiratory burst, cell permeability changes and H₂O₂ formation. PLANT, CELL & ENVIRONMENT 2011; 34:113-26. [PMID: 21029116 DOI: 10.1111/j.1365-3040.2010.02229.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Photosynthesis rate (A(n)) becomes unstable above a threshold temperature, and the recovery upon return to low temperature varies because of reasons not fully understood. We investigated responses of A(n), dark respiration and chlorophyll fluorescence to supraoptimal temperatures of varying duration and kinetics in Phaseolus vulgaris asking whether the instability of photosynthesis under severe heat stress is associated with cellular damage. Cellular damage was assessed by Evans blue penetration (enhanced membrane permeability) and by H₂O₂ generation [3,3'-diaminobenzidine 4HCl (DAB)-staining]. Critical temperature for dark fluorescence (F(0) ) rise (T(F)) was at 46-48 °C, and a burst of respiration was observed near T(F). However, A(n) was strongly inhibited already before T(F) was reached. Membrane permeability increased with temperature according to a switch-type response, with enhanced permeability observed above 48 °C. Experiments with varying heat pulse lengths and intensities underscored the threshold-type loss of photosynthetic function, and indicated that the degree of photosynthetic deterioration and cellular damage depended on accumulated heat-dose. Beyond the 'point of no return', propagation of cellular damage and reduction of photosynthesis continued upon transfer to lower temperatures and photosynthetic recovery was slow or absent. We conclude that instability of photosynthesis under severe heat stress is associated with time-dependent propagation of cellular lesions.
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Affiliation(s)
- Katja Hüve
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu 51014, Estonia
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Qu GQ, Liu X, Zhang YL, Yao D, Ma QM, Yang MY, Zhu WH, Yu S, Luo YB. Evidence for programmed cell death and activation of specific caspase-like enzymes in the tomato fruit heat stress response. PLANTA 2009; 229:1269-1279. [PMID: 19296126 DOI: 10.1007/s00425-009-0908-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2008] [Accepted: 02/10/2009] [Indexed: 05/26/2023]
Abstract
The tomato (Lycopersicon esculentum) fruit is the best available model to study the stress response of fleshy fruit. Programmed cell death (PCD) plays an important role in stress responses in mammals and plants. In this study, we provide evidence that PCD is triggered in the tomato fruit heat stress response by detection of the sequential diagnostic PCD events, including release of cytochrome c, activation of caspase-like proteases and the presence of TUNEL-positive nuclei. Investigating the time course of these events for 12 h after heat treatment indicated that cytochrome c release and caspase-like protease activation occurred rapidly and were consistent with the onset of DNA fragmentation. In addition, LEHDase and DEVDase enzymes were specifically activated in tomato fruit pericarp during the heat treatment and recovery time. There was no significant activation of YVADase or IETDase proteases. Preincubation of pericarp discs with the broad-spectrum, cell-permeable caspase inhibitor Z-VAD-FMK, suppressed heat-induced cell death measured by trypan blue, accompanied by a decrease in LEHDase and DEVDase activities.
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Affiliation(s)
- Gui-Qin Qu
- College of Food Science & Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, 100083, Beijing, China.
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Aranha MM, Matos AR, Teresa Mendes A, Vaz Pinto V, Rodrigues CMP, Arrabaça JD. Dinitro-o-cresol induces apoptosis-like cell death but not alternative oxidase expression in soybean cells. JOURNAL OF PLANT PHYSIOLOGY 2007; 164:675-84. [PMID: 17223224 DOI: 10.1016/j.jplph.2006.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2006] [Revised: 09/14/2006] [Accepted: 09/15/2006] [Indexed: 05/13/2023]
Abstract
In plants, programmed cell death is thought to be activated during differentiation and in response to biotic and abiotic stresses. Although its mechanisms are far less clear, several morphological and biochemical features have been described in different experimental systems, including DNA laddering and cytosolic protease activation. Moreover, plant mitochondria have an alternative terminal oxidase (AOX), which is thought to be involved in protection against increased reactive oxygen species production, perhaps representing a mechanism to prevent programmed cell death. In this study, we analysed cell death induced by the herbicide dinitro-o-cresol (DNOC) in soybean (Glycine max) suspension cell cultures and evaluated biochemical and molecular events associated with programmed cell death. AOX capacity and expression were also determined. DNOC-treated cells showed fragmented nuclear DNA as assessed by an in situ assay that detects 3'-OH ends. In addition, specific colorimetric assays and immunoblot analysis revealed activation of caspase-3-like proteins and release of cytochrome c from mitochondria, respectively, confirming the apoptotic-like phenotype. Surprisingly, AOX capacity and protein levels decreased in DNOC-treated cells, suggesting no association between cell death and AOX under these experimental conditions. In conclusion, the results show that DNOC induces programmed cell death in soybean cells, suggesting that plants and animals might share similar pathways. Further, the role of AOX in cell death has not been confirmed, and may depend on the nature and intensity of stress conditions.
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Affiliation(s)
- Márcia M Aranha
- Centro de Engenharia Biológica and Departamento de Biologia Vegetal, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisbon, Lisbon, Portugal
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Zuppini A, Bugno V, Baldan B. Monitoring programmed cell death triggered by mild heat shock in soybean-cultured cells. FUNCTIONAL PLANT BIOLOGY : FPB 2006; 33:617-627. [PMID: 32689271 DOI: 10.1071/fp06015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Accepted: 03/29/2006] [Indexed: 06/11/2023]
Abstract
Programmed cell death (PCD) is a common form of cellular demise during plant response to environmental stresses. The pathway of PCD has been partially clarified in plants although the underlying molecular mechanisms are still poorly defined. We have investigated the signalling cascade induced by a mild heat treatment causing PCD in soybean cells (Glycine max L.). The data show that heat shock led to the onset of PCD in soybean cells involving H2O2 production and mitochondrial damage. Cytochrome c release accompanies the presence of caspase 9-like and caspase 3-like protease activities. Concomitantly, cells were severely damaged with a progressive cell shrinkage, chloroplast alteration and detachment of the plasma membrane from the cell wall. Chromatin condensation and DNA damage were observed. It is proposed that a mild heat stress induces PCD in soybean cells through a caspase-like-dependent pathway.
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Affiliation(s)
- Anna Zuppini
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Valentina Bugno
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Barbara Baldan
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
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Foster HA, Bridger JM. The genome and the nucleus: a marriage made by evolution. Genome organisation and nuclear architecture. Chromosoma 2005; 114:212-29. [PMID: 16133352 DOI: 10.1007/s00412-005-0016-6] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2005] [Revised: 06/29/2005] [Accepted: 07/04/2005] [Indexed: 01/15/2023]
Abstract
Genomes are housed within cell nuclei as individual chromosome territories. Nuclei contain several architectural structures that interact and influence the genome. In this review, we discuss how the genome may be organised within its nuclear environment with the position of chromosomes inside nuclei being either influenced by gene density or by chromosomes size. We compare interphase genome organisation in diverse species and reveal similarities and differences between evolutionary divergent organisms. Genome organisation is also discussed with relevance to regulation of gene expression, development and differentiation and asks whether large movements of whole chromosomes are really observed during differentiation. Literature and data describing alterations to genome organisation in disease are also discussed. Further, the nuclear structures that are involved in genome function are described, with reference to what happens to the genome when these structures contain protein from mutant genes as in the laminopathies.
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Affiliation(s)
- Helen A Foster
- Laboratory of Nuclear and Genomic Health, Cell and Chromosome Biology Group, Division of Biosciences, School of Health Sciences and Social Care, Brunel University, Uxbridge UB8 3PH, UK
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Ge ZQ, Yang S, Cheng JS, Yuan YJ. Signal role for activation of caspase-3-like protease and burst of superoxide anions during Ce4+-induced apoptosis of cultured Taxus cuspidata cells. Biometals 2005; 18:221-32. [PMID: 15984567 DOI: 10.1007/s10534-005-0582-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The signal events of 1 mM Ce4+ (Ce(NH4)2(NO3)6)-induced apoptosis of cultured Taxus cuspidata cells were investigated. The percentage of apoptotic cells increased from 0.82% to 51.32% within 6 days. Caspase-3-like protease activity became notable during the second day of Ce4+-treatment, and the maximum activity was 5-fold higher than that of control cells at the fourth day. When the experiment system was pretreated with acetyl-Asp-Glu-Val-Asp-aldehyde (Ac-DEVD-CHO) at 100 microM, caspase-3-like activity resulted in distinct inhibition by 70% and 77.3% after 3 and 4 days of induction. Furthermore, 100 microM Ac-DEVD-CHO partially reduced the apoptotic cells by 58.6% and 60.8% at day 4 and 5 respectively. Ce4+ induced superoxide anions (O2*-) transient burst, and the first peak appeared at around 3.7-4 h, the second appeared at about 7 h. Both O2*- burst and cell apoptosis were effectively suppressed by application of diphenyl iodonium (NADPH oxidase inhibitor). Inhibition of O2*- production attenuated caspase-3-like activation by 49% and 53.6% during day 3 and 4 respectively. In addition, a total of 15 protein spots changed in response to caspase-3-like protease activation were identified by two-dimensional gel electrophoresis. These results suggest that Ce4+ of 1 mM induces apoptosis in suspension cultures of T. cuspidata through O2*- burst as well as caspase-3-like protease activation. The burst of O2*- exerts its activity as an upstream of caspase-3-like activation. Our results also implicate that other signal pathways independent of an O2*- burst possibly participate in mediating caspase-3-like protease activation.
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Affiliation(s)
- Zhi-Qiang Ge
- Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Weijin Road 92#, Nankai District, Tianjin 300072, P.R. China
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Zuppini A, Baldan B, Millioni R, Favaron F, Navazio L, Mariani P. Chitosan induces Ca 2+ -mediated programmed cell death in soybean cells. THE NEW PHYTOLOGIST 2004; 161:557-568. [PMID: 33873499 DOI: 10.1046/j.1469-8137.2003.00969.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
• Chitosan, a component of the cell wall of many fungi, has been widely used to mimic pathogen attack and has been shown to induce several defence responses. • Here we show that low concentrations (50 µg ml-1 ) of chitosan are able to induce an increase in cytosolic Ca2+ concentration ([Ca2+ ]cyt ), accumulation of H2 O2 in the culture medium, induction of the defence gene chalcone synthase (chs), and cell death in soybean cells (Glycine max). • Chitosan-induced cell death occurred through cytoplasmic shrinkage, chromatin condensation and activation of caspase 3-like protease, suggesting the activation of a programmed cell death (PCD) pathway. Buffering extracellular Ca2+ with the Ca2+ chelator EGTA prevents [Ca2+ ]cyt elevation, H2 O2 production and all downstream PCD features, but not cell death. • Higher doses (200 µg ml-1 ) of chitosan evoked neither Ca2+ transient and H2 O2 production nor caspase 3-like activation, but caused cell death, possibly as a result of plasma membrane disturbance.
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Affiliation(s)
- Anna Zuppini
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Barbara Baldan
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Renato Millioni
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Francesco Favaron
- Dipartimento Te. S.A.F., Sez. Patologia Vegetale, Università di Padova, str. Romea 16, 35020 Legnaro, Padova, Italy
| | - Lorella Navazio
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
| | - Paola Mariani
- Dipartimento di Biologia, Università di Padova, via U. Bassi 58/B, 35131 Padova, Italy
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