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Denjalli I, Knieper M, Uthoff J, Vogelsang L, Kumar V, Seidel T, Dietz KJ. The centrality of redox regulation and sensing of reactive oxygen species in abiotic and biotic stress acclimatization. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4494-4511. [PMID: 38329465 DOI: 10.1093/jxb/erae041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/06/2024] [Indexed: 02/09/2024]
Abstract
During land plant evolution, the number of genes encoding for components of the thiol redox regulatory network and the generator systems of reactive oxygen species (ROS) expanded, tentatively indicating that they have a role in tailored environmental acclimatization. This hypothesis has been validated both experimentally and theoretically during the last few decades. Recent developments of dynamic redox-sensitive GFP (roGFP)-based in vivo sensors for H2O2 and the redox potential of the glutathione pool have paved the way for dissecting the kinetics changes that occur in these crucial parameters in response to environmental stressors. The versatile cellular redox sensory and response regulatory system monitors alterations in redox metabolism and controls the activity of redox target proteins, and thereby affects most, if not all, cellular processes ranging from transcription to translation and metabolism. This review uses examples to describe the role of the redox- and ROS-dependent regulatory network in realising the appropriate responses to diverse environmental stresses. The selected case studies concern different environmental challenges, namely excess excitation energy, the heavy metal cadmium and the metalloid arsenic, nitrogen or phosphate shortages as examples for nutrient deficiency, wounding, and nematode infestation. Each challenge affects the redox-regulatory and ROS network, but our present state of knowledge also points toward pressing questions that remain open in relation to the translation of redox regulation to environmental acclimatization.
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Affiliation(s)
- Ibadete Denjalli
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Madita Knieper
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
| | - Jana Uthoff
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Lara Vogelsang
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
| | - Vijay Kumar
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Thorsten Seidel
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
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2
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García-Locascio E, Valenzuela EI, Cervantes-Avilés P. Impact of seed priming with Selenium nanoparticles on germination and seedlings growth of tomato. Sci Rep 2024; 14:6726. [PMID: 38509209 PMCID: PMC10954673 DOI: 10.1038/s41598-024-57049-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/13/2024] [Indexed: 03/22/2024] Open
Abstract
Poor germination and seedlings growth can lead to significant economic losses for farmers, therefore, sustainable agricultural strategies to improve germination and early growth of crops are urgently needed. The objective of this work was to evaluate selenium nanoparticles (Se NPs) as nanopriming agents for tomato (Solanum lycopersicum) seeds germinated without stress conditions in both trays and Petri dishes. Germination quality, seedlings growth, synergism-antagonism of Se with other elements, and fate of Se NPs, were determined as function of different Se NPs concentrations (1, 10 and 50 ppm). Results indicated that the germination rate in Petri dishes improved with 10 ppm, while germination trays presented the best results at 1 ppm, increasing by 10 and 32.5%, respectively. Therefore, seedlings growth was measured only in germination trays. Proline content decreased up to 22.19% with 10 ppm, while for same treatment, the total antioxidant capacity (TAC) and total chlorophyll content increased up to 38.97% and 21.28%, respectively. Antagonisms between Se with Mg, K, Mn, Zn, Fe, Cu and Mo in the seed were confirmed. In the case of seedlings, the N content decreased as the Se content increased. Transmission Electron Microscopy (TEM) imaging confirmed that Se NPs surrounded the plastids of the seed cells. By this finding, it can be inferred that Se NPs can reach the embryo, which is supported by the antagonism of Se with important nutrients involved in embryogenesis, such as K, Mg and Fe, and resulted in a better germination quality. Moreover, the positive effect of Se NPs on total chlorophyll and TAC, and the negative correlation with proline content with Se content in the seed, can be explained by Se NPs interactions with proplastids and other organelles within the cells, resulting with the highest length and fresh weight when seeds were exposed to 1 ppm.
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Affiliation(s)
- Ezequiel García-Locascio
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Reserva Territorial Atlixcáyotl, CP 72453, Puebla, Pue, México
| | - Edgardo I Valenzuela
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Reserva Territorial Atlixcáyotl, CP 72453, Puebla, Pue, México
| | - Pabel Cervantes-Avilés
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Reserva Territorial Atlixcáyotl, CP 72453, Puebla, Pue, México.
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3
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Komarov IV, Tolstanova G, Kuznietsova H, Dziubenko N, Yanchuk PI, Shtanova LY, Veselsky SP, Garmanchuk LV, Khranovska N, Gorbach O, Dovbynchuk T, Borysko P, Babii O, Schober T, Ulrich AS, Afonin S. Towards in vivo photomediated delivery of anticancer peptides: Insights from pharmacokinetic and -dynamic data. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 233:112479. [PMID: 35660309 DOI: 10.1016/j.jphotobiol.2022.112479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
An in vivo study of a photoswitchable cytotoxic peptide LMB040 has been undertaken on a chemically induced hepatocellular carcinoma model in immunocompetent rats. We analysed the pharmacokinetic profile of the less toxic photoform ("ring-closed" dithienylethene) of the compound in tumors, plasma, and healthy liver. Accordingly, the peptide can reach a tumor concentration sufficiently high to exert a cytotoxic effect upon photoconversion into the more active ("ring-open") photoform. Tissue morphology, histology, redox state of the liver, and hepatic biochemical parameters in blood serum were analysed upon treatment with (i) the less active photoform, (ii) the in vivo light-activated alternative photoform, and (iii) compared with a reference chemotherapeutic 5-fluorouracil. We found that application of the less toxic form followed by a delayed in vivo photoconversion into the more toxic ring-open form of LMB040 led to a higher overall survival of the animals, and signs of enhanced immune response were observed compared to the untreated animals.
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Affiliation(s)
- Igor V Komarov
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine; Lumobiotics, Karlsruhe, Germany; Enamine, Kyiv, Ukraine.
| | | | - Halyna Kuznietsova
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine; Enamine, Kyiv, Ukraine
| | | | | | | | | | | | | | | | | | | | - Oleg Babii
- Lumobiotics, Karlsruhe, Germany; Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Tim Schober
- Lumobiotics, Karlsruhe, Germany; Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Anne S Ulrich
- Karlsruhe Institute of Technology, Karlsruhe, Germany; Institute of Organic Chemistry of Karlsruhe KIT, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany..
| | - Sergii Afonin
- Karlsruhe Institute of Technology, Karlsruhe, Germany.
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4
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Maresca V, Salbitani G, Moccia F, Cianciullo P, Carraturo F, Sorbo S, Insolvibile M, Carfagna S, Panzella L, Basile A. Antioxidant response to heavy metal pollution of Regi Lagni freshwater in Conocephalum conicum L. (Dum.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113365. [PMID: 35259593 DOI: 10.1016/j.ecoenv.2022.113365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Conocephalum conicum L. is a cosmopolitan liverwort species able to respond to local environmental pollution by changing its biological features. In the present study, we assessed the different biological responses in C. conicum to heavy metal contamination of Regi Lagni channels, a highly polluted freshwater body. As for the in field experiment, we set up moss bags containing collected samples of the local wild growing C. conicum, from the upstream site (non-polluted area), and we exposed them in the three selected sites characterized by different and extreme conditions of heavy metal pollution. In addition, to better understand the contribution of heavy metals to the alterations and response of the liverwort, we performed in vitro tests, using the same concentration of heavy metals measured in the sites at the moment of the exposition. In both experimental settings, bioaccumulation, ultrastructural damage, reactive oxygen species production and localization, antioxidant enzymes activity (superoxide dismutase, catalase and glutathione S-transferases), glutathione (reduced and oxidized) levels, localization of compounds presenting thiol groups and phenolic content were investigated. The results showed that the samples from different sites and conditions (for in vitro tests) showed significant differences. In particular, the ultrastructural alterations show a trend correlated to the different exposure situations; ROS contents, glutathione, antioxidant enzyme activities, and phenolic contents were increased showing an enhancement of the antioxidant defense both by the enzymatic way and by using the synthesis of antioxidant phenolic compounds. This study confirms the ability of C. conicum to respond to heavy metal pollution and the responses studied are, at least partially, correlated to the presence of heavy metals. All the responses considered respond consistently with the pollution trend and they can be proposed as pollution biomarkers. Therefore, we suggest the use of C. conicum to identify local hot spots of pollution in further investigation.
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Affiliation(s)
- Viviana Maresca
- Department of Biology, University of Naples Federico II, Naples, Italy.
| | | | - Federica Moccia
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy.
| | | | | | - Sergio Sorbo
- CeSMA, section of Microscopy, University of Naples Federico II, Naples, Italy.
| | - Marilena Insolvibile
- ISPRA, Italian National Institute for Environmental Protection and Research, Rome, Italy.
| | - Simona Carfagna
- Department of Biology, University of Naples Federico II, Naples, Italy.
| | - Lucia Panzella
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy.
| | - Adriana Basile
- Department of Biology, University of Naples Federico II, Naples, Italy.
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5
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Salbitani G, Perrone A, Rosati L, Laezza C, Carfagna S. Sulfur Starvation in Extremophilic Microalga Galdieria sulphuraria: Can Glutathione Contribute to Stress Tolerance? PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040481. [PMID: 35214814 PMCID: PMC8877276 DOI: 10.3390/plants11040481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/08/2022] [Accepted: 02/08/2022] [Indexed: 05/02/2023]
Abstract
This study reports the effects of sulfur (S) deprivation in cultures of Galdieria sulphuraria (Cyanidiophyceae). Galdieria is a unicellular red alga that usually grows, forming biomats on rocks, in S-rich environments. These are volcanic areas, where S is widespread since H2S is the prevalent form of gas. The glutathione content in Galdieria sulphuraria is much higher than that found in the green algae and even under conditions of S deprivation for 7 days, it remains high. On the other hand, the S deprivation causes a decrease in the total protein content and a significant increase in soluble protein fraction. This suggests that in the conditions of S starvation, the synthesis of enzymatic proteins, that metabolically support the cell in the condition of nutritional stress, could be up regulated. Among these enzymatic proteins, those involved in cell detoxification, due to the accumulation of ROS species, have been counted.
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Affiliation(s)
- Giovanna Salbitani
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Naples, Italy; (G.S.); (A.P.); (L.R.)
| | - Angela Perrone
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Naples, Italy; (G.S.); (A.P.); (L.R.)
| | - Luigi Rosati
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Naples, Italy; (G.S.); (A.P.); (L.R.)
| | - Carmen Laezza
- Dipartimento di Agraria, Università di Napoli Federico II, Portici, 80055 Naples, Italy;
| | - Simona Carfagna
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Naples, Italy; (G.S.); (A.P.); (L.R.)
- Correspondence: ; Tel.: +39-081-2538559
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6
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Orel VE, Krotevych M, Dasyukevich O, Rykhalskyi O, Syvak L, Tsvir H, Tsvir D, Garmanchuk L, Orel VВ, Sheina I, Rybka V, Shults NV, Suzuki YJ, Gychka SG. Effects induced by a 50 Hz electromagnetic field and doxorubicin on Walker-256 carcinosarcoma growth and hepatic redox state in rats. Electromagn Biol Med 2021; 40:475-487. [PMID: 34392747 DOI: 10.1080/15368378.2021.1958342] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We compare the effects of an extremely low-frequency electromagnetic field (EMF) with the chemotherapeutic agent doxorubicin (DOX) on tumor growth and the hepatic redox state in Walker-256 carcinosarcoma-bearing rats. Animals were divided into five groups with one control (no tumor) and four tumor-bearing groups: no treatment, DOX, DOX combined with EMF and EMF. While DOX and DOX + EMF provided greater inhibition of tumor growth, treatment with EMF alone resulted in some level of antitumor effect (p < .05). Superoxide dismutase, catalase activity and glutathione content were significantly decreased in the liver of tumor-bearing animals as compared with the control group (p < .05). The decreases in antioxidant defenses accompanied histological findings of suspected liver damage. However, hepatic levels of thiobarbituric acid reactive substances, an indicator of lipid peroxidation, were three times lower in EMF and DOX + EMF groups than in no treatment and DOX (p < .05). EMF and DOX + EMF showed significantly lower activity of serum ALT than DOX alone (p < .05). These results indicate that EMF treatment can inhibit tumor growth, causing less pronounced oxidative stress damage to the liver. Therefore, EMF can be used as a therapeutic strategy to influence the hepatic redox state and combat cancer with reduced side-effects.
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Affiliation(s)
- Valerii E Orel
- Medical Physics and Bioengineering Research Laboratory, National Cancer Institute, Kyiv, Ukraine.,Biomedical Engineering Department, NTUU "Igor Sikorsky KPI", Kyiv, Ukraine
| | - Mykhailo Krotevych
- Research Department of the Pathological Anatomy, National Cancer Institute, Kyiv, Ukraine
| | - Olga Dasyukevich
- Medical Physics and Bioengineering Research Laboratory, National Cancer Institute, Kyiv, Ukraine
| | - Oleksandr Rykhalskyi
- Medical Physics and Bioengineering Research Laboratory, National Cancer Institute, Kyiv, Ukraine
| | - Liubov Syvak
- Research Department of Chemotherapy Solid Tumors, National Cancer Institute, Kyiv, Ukraine
| | | | - Dmytro Tsvir
- Medical Faculty, Bogomolets National Medical University, Kyiv, Ukraine
| | - Lyudmyla Garmanchuk
- Department of Biomedicine, NSC "Institute of Biology and Medicine" of the Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Valerii В Orel
- Biomedical Engineering Department, NTUU "Igor Sikorsky KPI", Kyiv, Ukraine.,Research Department of Radiodiagnostics, National Cancer Institute, Kyiv, Ukraine
| | - Iryna Sheina
- Department of Medical Physics and Biomedical Nanotechnologies, V. N. Karazin Kharkiv National University, Kharkiv, Ukraine
| | - Vladyslava Rybka
- Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, DC, USA
| | - Nataliia V Shults
- Department of Medical Physics and Biomedical Nanotechnologies, V. N. Karazin Kharkiv National University, Kharkiv, Ukraine
| | - Yuichiro J Suzuki
- Department of Medical Physics and Biomedical Nanotechnologies, V. N. Karazin Kharkiv National University, Kharkiv, Ukraine
| | - Sergiy G Gychka
- Department of Pathological Anatomy 2, Bogomolets National Medical University, Kyiv, Ukraine
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7
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Weenink EFJ, Matthijs HCP, Schuurmans JM, Piel T, van Herk MJ, Sigon CAM, Visser PM, Huisman J. Interspecific protection against oxidative stress: green algae protect harmful cyanobacteria against hydrogen peroxide. Environ Microbiol 2021; 23:2404-2419. [PMID: 33587811 PMCID: PMC8248038 DOI: 10.1111/1462-2920.15429] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 02/08/2021] [Indexed: 11/27/2022]
Abstract
Oceanographic studies have shown that heterotrophic bacteria can protect marine cyanobacteria against oxidative stress caused by hydrogen peroxide (H2O2). Could a similar interspecific protection play a role in freshwater ecosystems? In a series of laboratory experiments and two lake treatments, we demonstrate that freshwater cyanobacteria are sensitive to H2O2 but can be protected by less‐sensitive species such as green algae. Our laboratory results show that green algae degrade H2O2 much faster than cyanobacteria. Consequently, the cyanobacterium Microcystis was able to survive at higher H2O2 concentrations in mixtures with the green alga Chlorella than in monoculture. Interestingly, even the lysate of destructed Chlorella was capable to protect Microcystis, indicating a two‐component H2O2 degradation system in which Chlorella provided antioxidant enzymes and Microcystis the reductants. The level of interspecific protection provided to Microcystis depended on the density of Chlorella. These findings have implications for the mitigation of toxic cyanobacterial blooms, which threaten the water quality of many eutrophic lakes and reservoirs worldwide. In several lakes, H2O2 has been successfully applied to suppress cyanobacterial blooms. Our results demonstrate that high densities of green algae can interfere with these lake treatments, as they may rapidly degrade the added H2O2 and thereby protect the bloom‐forming cyanobacteria.
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Affiliation(s)
- Erik F J Weenink
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Hans C P Matthijs
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - J Merijn Schuurmans
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Tim Piel
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Maria J van Herk
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Corrien A M Sigon
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Petra M Visser
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
| | - Jef Huisman
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, GE, 1090, The Netherlands
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8
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Carfagna S, Salbitani G, Innangi M, Menale B, De Castro O, Di Martino C, Crawford TW. Simultaneous Biochemical and Physiological Responses of the Roots and Leaves of Pancratium maritimum (Amaryllidaceae) to Mild Salt Stress. PLANTS (BASEL, SWITZERLAND) 2021; 10:345. [PMID: 33670404 PMCID: PMC7918514 DOI: 10.3390/plants10020345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 11/17/2022]
Abstract
Pancratium maritimum (Amaryllidaceae) is a bulbous geophyte growing on coastal sands. In this study, we investigated changes in concentrations of metabolites in the root and leaf tissue of P. maritimum in response to mild salt stress. Changes in concentrations of osmolytes, glutathione, sodium, mineral nutrients, enzymes, and other compounds in the leaves and roots were measured at 0, 3, and 10 days during a 10-day exposure to two levels of mild salt stress, 50 mM NaCl or 100 mM NaCl in sandy soil from where the plants were collected in dunes near Cuma, Italy. Sodium accumulated in the roots, and relatively little was translocated to the leaves. At both concentrations of NaCl, higher values of the concentrations of oxidized glutathione disulfide (GSSG), compared to reduced glutathione (GSH), in roots and leaves were associated with salt tolerance. The concentration of proline increased more in the leaves than in the roots, and glycine betaine increased in both roots and leaves. Differences in the accumulation of organic osmolytes and electron donors synthesized in both leaves and roots demonstrate that osmoregulatory and electrical responses occur in these organs of P. maritimum under mild salt stress.
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Affiliation(s)
- Simona Carfagna
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, 80126 Napoli, Italy; (S.C.); (G.S.); (B.M.); (O.D.C.)
| | - Giovanna Salbitani
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, 80126 Napoli, Italy; (S.C.); (G.S.); (B.M.); (O.D.C.)
| | - Michele Innangi
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania Luigi Vanvitelli, 81100 Caserta, Italy;
| | - Bruno Menale
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, 80126 Napoli, Italy; (S.C.); (G.S.); (B.M.); (O.D.C.)
| | - Olga De Castro
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, 80126 Napoli, Italy; (S.C.); (G.S.); (B.M.); (O.D.C.)
| | - Catello Di Martino
- Dipartimento di Agricoltura, Ambiente ed Alimenti, Università degli Studi del Molise, 86100 Campobasso, Italy
| | - Thomas W. Crawford
- Dipartimento di Agricoltura, Ambiente ed Alimenti, Università degli Studi del Molise, 86100 Campobasso, Italy
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9
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Boiangiu RS, Mihasan M, Gorgan DL, Stache BA, Hritcu L. Anxiolytic, Promnesic, Anti-Acetylcholinesterase and Antioxidant Effects of Cotinine and 6-Hydroxy-L-Nicotine in Scopolamine-Induced Zebrafish ( Danio rerio) Model of Alzheimer's Disease. Antioxidants (Basel) 2021; 10:212. [PMID: 33535660 PMCID: PMC7912787 DOI: 10.3390/antiox10020212] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/18/2021] [Accepted: 01/27/2021] [Indexed: 12/20/2022] Open
Abstract
Cotinine (COT) and 6-hydroxy-L-nicotine (6HLN) are two nicotinic derivatives that possess cognitive-improving abilities and antioxidant properties in different rodent models of Alzheimer's disease (AD), eluding the side-effects of nicotine (NIC), the parent molecule. In the current study, we evaluated the impact of COT and 6HLN on memory deterioration, anxiety, and oxidative stress in the scopolamine (SCOP)-induced zebrafish model of AD. For this, COT and 6HLN were acutely administered by immersion to zebrafish that were treated with SCOP before testing. The memory performances were assessed in Y-maze and object discrimination (NOR) tasks, while the anxiety-like behavior was evaluated in the novel tank diving test (NTT). The acetylcholinesterase (AChE) activity and oxidative stress were measured from brain samples. The RT-qPCR analysis was used to evaluate the npy, egr1, bdnf, and nrf2a gene expression. Our data indicated that both COT and 6HLN attenuated the SCOP-induced anxiety-like behavior and memory impairment and reduced the oxidative stress and AChE activity in the brain of zebrafish. Finally, RT-qPCR analysis indicated that COT and 6HLN increased the npy, egr1, bdnf, and nrf2a gene expression. Therefore, COT and 6HLN could be used as tools for improving AD conditions.
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Affiliation(s)
- Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (M.M.); (D.L.G.); (B.A.S.)
| | | | | | | | - Lucian Hritcu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (M.M.); (D.L.G.); (B.A.S.)
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10
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Sulochana SB, Arumugam M. Targeted Metabolomic and Biochemical Changes During Nitrogen Stress Mediated Lipid Accumulation in Scenedesmus quadricauda CASA CC202. Front Bioeng Biotechnol 2020; 8:585632. [PMID: 33195150 PMCID: PMC7604524 DOI: 10.3389/fbioe.2020.585632] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/28/2020] [Indexed: 01/08/2023] Open
Abstract
Scenedesmus quadricauda CASA CC202, a potent freshwater microalga is being used as a biofuel feedstock, which accumulates 2.27 fold lipid during nitrogen stress induction. Upon nitrogen starvation, S. quadricauda undergoes biochemical and metabolic changes that perturb the cell to cope up the stress condition. The nitrogen stress-induced biochemical changes in mitochondrion exhibits due to the oxidative stress-induced Reactive Oxygen species (ROS) generation at high membrane potential (Δψm). The predominant ROS generated during nitrogen starvation was H2O2, OH–, O2⋅− and to suppress them, scavenging enzymes such as peroxidase and catalase increased to about 23.16 and 0.79 U/ml as compared to control (20.2, 0.19 U/ml). The targeted metabolic analysis showed, stress-related non-proteinogenic amino acids and energy equivalents elevated during the initial hours of nitrogen starvation. The nitrogen stress-triggered biochemical and metabolic changes along with other cellular events eventually lead to lipid accumulation in S. quadricauda.
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Affiliation(s)
- Sujitha Balakrishnan Sulochana
- Microbial Processes and Technology Division, Council of Scientific and Industrial Research - National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific and Innovative Research, Ghaziabad, India
| | - Muthu Arumugam
- Microbial Processes and Technology Division, Council of Scientific and Industrial Research - National Institute for Interdisciplinary Science and Technology, Trivandrum, India.,Academy of Scientific and Innovative Research, Ghaziabad, India
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Chlorella sorokiniana Dietary Supplementation Increases Antioxidant Capacities and Reduces Ros Release in Mitochondria of Hyperthyroid Rat Liver. Antioxidants (Basel) 2020; 9:antiox9090883. [PMID: 32957734 PMCID: PMC7555375 DOI: 10.3390/antiox9090883] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/02/2020] [Accepted: 09/15/2020] [Indexed: 01/06/2023] Open
Abstract
The ability of aerobic organisms to cope with the attack of radicals and other reactive oxygen species improves by feeding on foods containing antioxidants. Microalgae contain many molecules showing in vitro antioxidant capacity, and their food consumption can protect cells from oxidative insults. We evaluated the capacity of dietary supplementation with 1% dried Chlorella sorokiniana strain 211/8k, an alga rich in glutathione, α-tocopherol, and carotenoids, to counteract an oxidative attack in vivo. We used the hyperthyroid rat as a model of oxidative stress, in which the increase in metabolic capacities is associated with an increase in the release of mitochondrial reactive oxygen species (ROS) and the susceptibility to oxidative insult. Chlorella sorokiniana supplementation prevents the increases in oxidative stress markers and basal oxygen consumption in hyperthyroid rat livers. It also mitigates the thyroid hormone-induced increase in maximal aerobic capacities, the mitochondrial ROS release, and the susceptibility to oxidative stress. Finally, alga influences the thyroid hormone-induced changes in the factors involved in mitochondrial biogenesis peroxisomal proliferator-activated receptor-γ coactivator (PGC1-1) and nuclear respiratory factor 2 (NRF-2). Our results suggest that Chlorella sorokiniana dietary supplementation has beneficial effects in counteracting oxidative stress and that it works primarily by preserving mitochondrial function. Thus, it can be useful in preventing dysfunctions in which mitochondrial oxidative damage and ROS production play a putative role.
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Kuznietsova H, Dziubenko N, Herheliuk T, Prylutskyy Y, Tauscher E, Ritter U, Scharff P. Water-Soluble Pristine C 60 Fullerene Inhibits Liver Alterations Associated with Hepatocellular Carcinoma in Rat. Pharmaceutics 2020; 12:pharmaceutics12090794. [PMID: 32842595 PMCID: PMC7559840 DOI: 10.3390/pharmaceutics12090794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/15/2020] [Accepted: 08/19/2020] [Indexed: 12/11/2022] Open
Abstract
Excessive production of reactive oxygen species is the main cause of hepatocellular carcinoma (HCC) initiation and progression. Water-soluble pristine C60 fullerene is a powerful and non-toxic antioxidant, therefore, its effect under rat HCC model and its possible mechanisms were aimed to be discovered. Studies on HepG2 cells (human HCC) demonstrated C60 fullerene ability to inhibit cell growth (IC50 = 108.2 μmol), to induce apoptosis, to downregulate glucose-6-phosphate dehydrogenase, to upregulate vimentin and p53 expression and to alter HepG2 redox state. If applied to animals experienced HCC in dose of 0.25 mg/kg per day starting at liver cirrhosis stage, C60 fullerene improved post-treatment survival similar to reference 5-fluorouracil (31 and 30 compared to 17 weeks) and inhibited metastasis unlike the latter. Furthermore, C60 fullerene substantially attenuated liver injury and fibrosis, decreased liver enzymes, and normalized bilirubin and redox markers (elevated by 1.7–7.7 times under HCC). Thus, C60 fullerene ability to inhibit HepG2 cell growth and HCC development and metastasis and to improve animal survival was concluded. C60 fullerene cytostatic action might be realized through apoptosis induction and glucose-6-phosphate dehydrogenase downregulation in addition to its antioxidant activity.
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Affiliation(s)
- Halyna Kuznietsova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Volodymyrska str., 64, 01601 Kyiv, Ukraine; (N.D.); (T.H.); (Y.P.)
- Correspondence: (H.K.); (U.R.); Tel.: +38-095-277-4370 (H.K.); +49-3677-69-3603 (U.R.)
| | - Natalia Dziubenko
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Volodymyrska str., 64, 01601 Kyiv, Ukraine; (N.D.); (T.H.); (Y.P.)
| | - Tetiana Herheliuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Volodymyrska str., 64, 01601 Kyiv, Ukraine; (N.D.); (T.H.); (Y.P.)
| | - Yuriy Prylutskyy
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Volodymyrska str., 64, 01601 Kyiv, Ukraine; (N.D.); (T.H.); (Y.P.)
| | - Eric Tauscher
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer str. 25, 98693 Ilmenau, Germany; (E.T.); (P.S.)
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer str. 25, 98693 Ilmenau, Germany; (E.T.); (P.S.)
- Correspondence: (H.K.); (U.R.); Tel.: +38-095-277-4370 (H.K.); +49-3677-69-3603 (U.R.)
| | - Peter Scharff
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer str. 25, 98693 Ilmenau, Germany; (E.T.); (P.S.)
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Boiangiu RS, Mihasan M, Gorgan DL, Stache BA, Petre BA, Hritcu L. Cotinine and 6-Hydroxy-L-Nicotine Reverses Memory Deficits and Reduces Oxidative Stress in Aβ 25-35-Induced Rat Model of Alzheimer's Disease. Antioxidants (Basel) 2020; 9:E768. [PMID: 32824768 PMCID: PMC7465470 DOI: 10.3390/antiox9080768] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/08/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
The nicotinic derivatives, cotinine (COT), and 6-hydroxy-L-nicotine (6HLN), showed promising cognitive-improving effects without exhibiting the nicotine's side-effects. Here, we investigated the impact of COT and 6HLN on memory impairment and the oxidative stress in the Aβ25-35-induced rat model of Alzheimer's disease (AD). COT and 6HLN were chronically administered to Aβ25-35-treated rats, and their memory performances were assessed using in vivo tasks (Y-maze, novel object recognition, and radial arm maze). By using in silico tools, we attempted to associate the behavioral outcomes with the calculated binding potential of these nicotinic compounds in the allosteric sites of α7 and α4β2 subtypes of the nicotinic acetylcholine receptors (nAChRs). The oxidative status and acetylcholinesterase (AChE) activity were determined from the hippocampal tissues. RT-qPCR assessed bdnf, arc, and il-1β mRNA levels. Our data revealed that COT and 6HLN could bind to α7 and α4β2 nAChRs with similar or even higher affinity than nicotine. Consequently, the treatment exhibited a pro-cognitive, antioxidant, and anti-AChE profile in the Aβ25-35-induced rat model of AD. Finally, RT-qPCR analysis revealed that COT and 6HLN positively modulated the bdnf, arc, and il-1β genes expression. Therefore, these nicotinic derivatives that act on the cholinergic system might represent a promising choice to ameliorate AD conditions.
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Affiliation(s)
- Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (M.M.); (D.L.G.); (B.A.S.)
| | - Marius Mihasan
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (M.M.); (D.L.G.); (B.A.S.)
| | - Dragos Lucian Gorgan
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (M.M.); (D.L.G.); (B.A.S.)
| | - Bogdan Alexandru Stache
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (M.M.); (D.L.G.); (B.A.S.)
- Center for Fundamental Research and Experimental Development in Translation Medicine—TRANSCEND, Regional Institute of Oncology, 700483 Iasi, Romania;
| | - Brindusa Alina Petre
- Center for Fundamental Research and Experimental Development in Translation Medicine—TRANSCEND, Regional Institute of Oncology, 700483 Iasi, Romania;
- Department of Chemistry, Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania
| | - Lucian Hritcu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (R.S.B.); (M.M.); (D.L.G.); (B.A.S.)
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Sulfonamides-induced oxidative stress in freshwater microalga Chlorella vulgaris: Evaluation of growth, photosynthesis, antioxidants, ultrastructure, and nucleic acids. Sci Rep 2020; 10:8243. [PMID: 32427937 PMCID: PMC7237458 DOI: 10.1038/s41598-020-65219-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 04/27/2020] [Indexed: 12/20/2022] Open
Abstract
Sulfadiazine (SD), sulfamerazine (SM1), and sulfamethazine (SM2) are widely used and disorderly discharged into surface water, causing contamination of lakes and rivers. However, microalgae are regard as a potential resource to alleviate and degrade antibiotic pollution. The physiological changes of Chlorella vulgaris in the presence of three sulfonamides (SAs) with varying numbers of –CH3 groups and its SA-removal efficiency were investigated following a 7-day exposure experiment. Our results showed that the growth inhibitory effect of SD (7.9–22.6%), SM1 (7.2–45.9%), and SM2 (10.3–44%) resulted in increased proteins and decreased soluble sugars. Oxidative stress caused an increase in superoxide dismutase and glutathione reductase levels but decreased catalase level. The antioxidant responses were insufficient to cope-up with reactive oxygen species (hydrogen peroxide and superoxide anion) levels and prevent oxidative damage (malondialdehyde level). The ultrastructure and DNA of SA-treated algal cells were affected, as evident from the considerable changes in the cell wall, chloroplast, and mitochondrion, and DNA migration. C. vulgaris-mediated was able to remove up to 29% of SD, 16% of SM1, and 15% of SM2. Our results suggest that certain concentrations of specific antibiotics may induce algal growth, and algal-mediated biodegradation process can accelerate the removal of antibiotic contamination.
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Water-Soluble Pristine C 60 Fullerenes Inhibit Liver Fibrotic Alteration and Prevent Liver Cirrhosis in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8061246. [PMID: 32148657 PMCID: PMC7044474 DOI: 10.1155/2020/8061246] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/11/2020] [Accepted: 01/20/2020] [Indexed: 02/07/2023]
Abstract
Liver cirrhosis is an outcome of a wide range of liver chronic diseases. It is attributed to oxidative stress; therefore, antioxidant usage could be a promising treatment of that. So, exploring the impact of effective free radical scavenger pristine C60 fullerenes on liver fibrosis and cirrhosis and their ability to interact with main growth factor receptors involved in liver fibrogenesis was aimed to be discovered. We used N-diethylnitrosamine/carbon tetrachloride-induced simulations of rat liver fibrosis (10 weeks) and cirrhosis (15 weeks). Pristine C60 fullerene aqueous colloid solution (C60FAS) was injected daily at a dose of 0.25 mg/kg throughout the experiment. Liver morphology and functional and redox states were assessed. C60 fullerenes' ability to interact with epidermal, vasoendothelial, platelet-derived, and fibroblast growth factor receptors (EGFR, VEGFR, PDGFR, and FGFR, respectively) was estimated by computational modeling. We observed that C60FAS reduced the severity of fibrosis in fibrotic rats (0.75 vs. 3.0 points according to Ishak score), attenuated the hepatocyte injury, normalized elevated blood serum alkaline phosphatase (ALP) and lactate dehydrogenase (LDH), and mitigated oxidative stress manifestation in liver tissue restoring its redox balance. When applied to cirrhotic animals, C60FAS reduced connective tissue deposition as well (2.4 vs. 5.4 points according to Ishak score), diminished ALP and LDH (by 16% and 61%), and normalized conjugated and nonconjugated bilirubin, restoring the liver function. Altered liver lipid and protein peroxides and glutathione peroxidase activity were also leveled. Within a computer simulation, it was shown that C60 fullerenes can block hinge prohibiting ATP binding for EGFR and FGFR and thus blocking associated signal pathways. This ability in addition to their antioxidant properties may contribute to C60 fullerene's antifibrotic action. Thus, C60FAS may have a substantial therapeutic potential as an inhibitor of liver fibrosis and cirrhosis.
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Kuznietsova H, Dziubenko N, Byelinska I, Hurmach V, Bychko A, Lynchak O, Milokhov D, Khilya O, Rybalchenko V. Pyrrole derivatives as potential anti-cancer therapeutics: synthesis, mechanisms of action, safety. J Drug Target 2019; 28:547-563. [PMID: 31814456 DOI: 10.1080/1061186x.2019.1703189] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Pyrrole derivatives (PDs) chloro-1-(4-chlorobenzyl)-4-((3-(trifluoromethyl)phenyl)amino)-1H-pyrrole-2,5-dione (MI-1) and 5-amino-4-(1,3-benzothyazol-2-yn)-1-(3-methoxyphenyl)-1,2-dihydro-3H-pyrrole-3-one (D1) were synthesised as inhibitors of several protein kinases including EGFR and VEGFR. The aim of the study was to reveal the exact mechanisms of PDs' action EGFR and VEGFR are involved in. We observed, that both PDs could bind with EGFR and VEGFR and form stable complexes. PDs entered into electrostatic interactions with polar groups of phospholipid heads in cell membrane, and the power of interaction depended on the nature of PD radical substituents (greater for MI-1 and smaller for D1). Partial intercalation of MI-1 into the membrane hydrophobic zone also occurred. PDs concentrations induced apoptosis in malignant cells but normal ones had different sensitivity to those. MI-1 and D1 acted like antioxidants in inflamed colonic tissue, as evidenced by reduce of lipid and protein peroxidation products (by 43-67%) and increase of superoxide dismutase activity (by 40 and 58%) with restoring these values to control ones. MI-1 restored reduced haemoglobin and normalised elevated platelets and monocytes in settings of colorectal cancer, whereas D1 normalised only platelets. Thus, MI-1 and D1 could be used as competitive inhibitors of EGFR and VEGFR and antioxidants, which might contribute to realisation of their anti-inflammatory, proapoptotic and antitumor activity.
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Affiliation(s)
| | | | | | - Vasyl Hurmach
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Andriy Bychko
- Bogomolets National Medical University, Kyiv, Ukraine
| | - Oksana Lynchak
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Demyd Milokhov
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Olga Khilya
- Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
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Sardella A, Marieschi M, Mercatali I, Zanni C, Gorbi G, Torelli A. The relationship between sulfur metabolism and tolerance of hexavalent chromium in Scenedesmus acutus (Spheropleales): Role of ATP sulfurylase. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 216:105320. [PMID: 31590132 DOI: 10.1016/j.aquatox.2019.105320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/23/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Sulfur availability and the end products of its metabolism, cysteine, glutathione and phytochelatins, play an important role in heavy metal tolerance, chromium included. Sulfate and chromate not only compete for the transporters but also for assimilation enzymes and chromium tolerance in various organisms has been associated to differences in this pathway. We investigated the mechanisms of Cr(VI)-tolerance increase induced by S-starvation focusing on the role of ATP sulfurylase (ATS) in two strains of Scenedesmus acutus with different chromium sensitivity. S-starvation enhances the defence potential by increasing sulfate uptake/assimilation and decreasing chromium uptake, thus suggesting a change in the transport system. We isolated two isoforms of the enzyme, SaATS1 and SaATS2, with different sensitivity to sulfur availability, and analysed them in S-sufficient and S-replete condition both in standard and in chromium supplemented medium. SaATS2 expression is different in the two strains and presumably marks a different sulfur perception/exploitation in the Cr-tolerant. Its induction and silencing are compatible with a role in the transient tolerance increase induced by S-starvation. This enzyme can however hardly be responsible for the large cysteine production of the Cr-tolerant strain after starvation, suggesting that cytosolic rather than chloroplastic cysteine production is differently regulated in the two strains.
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Affiliation(s)
- Alessio Sardella
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11A I-43124, Parma, Italy.
| | - Matteo Marieschi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11A I-43124, Parma, Italy.
| | - Isabel Mercatali
- ISPRA - Italian National Institute for Environmental Protection and Research, Via di Castel Romano 100-00128, Rome, Italy.
| | - Corrado Zanni
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11A I-43124, Parma, Italy.
| | - Gessica Gorbi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11A I-43124, Parma, Italy.
| | - Anna Torelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Viale delle Scienze 11A I-43124, Parma, Italy.
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18
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Byelinska I, Kuznietsova H, Dziubenko N, Lynchak O, Rybalchenko T, Prylutskyy Y, Kyzyma O, Ivankov O, Rybalchenko V, Ritter U. Effect of С60 fullerenes on the intensity of colon damage and hematological signs of ulcerative colitis in rats. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:505-517. [DOI: 10.1016/j.msec.2018.08.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 07/06/2018] [Accepted: 08/11/2018] [Indexed: 02/07/2023]
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Bottone C, Camerlingo R, Miceli R, Salbitani G, Sessa G, Pirozzi G, Carfagna S. Antioxidant and anti-proliferative properties of extracts from heterotrophic cultures of Galdieria sulphuraria. Nat Prod Res 2018; 33:1659-1663. [PMID: 29334254 DOI: 10.1080/14786419.2018.1425853] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
This study explores the possibility to use the extremophilic microalga Galdieria sulphuraria (strain 064) as a source of natural biomolecules with beneficial and protective effects on human health. Galdieria was cultivated in heterotrophy conditions and cells extracts for their antioxidant and anti-proliferative properties were tested. Galdieria extracts showed high antioxidant power tested through ABTS assay and revealed high glutathione and phycocyanin contents. Based on Annexin-V FITC/propidium iodide and MTT analysis, algae extracts inhibited the proliferation of human adenocarcinoma A549 cells (51.2% inhibition) through the induction of apoptosis without cell cycle arrest. Besides, cytotoxicity and cytometry assays showed a positive pro-apoptotic mechanism. On these bases, we suggest that G. sulphuraria from heterotrophic culture, for its therapeutic potential, could be considered a good candidate for further studies with the aim to isolate bioactive anti-cancer molecules.
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Affiliation(s)
- Claudia Bottone
- a Dipartimento di Biologia , Università di Napoli Federico II , Napoli , Italy
| | - Rosa Camerlingo
- b Dipartimento della Ricerca , Istituto Nazionale Tumori Fondazione "G. Pascale" , Napoli , Italy
| | - Roberta Miceli
- b Dipartimento della Ricerca , Istituto Nazionale Tumori Fondazione "G. Pascale" , Napoli , Italy
| | - Giovanna Salbitani
- a Dipartimento di Biologia , Università di Napoli Federico II , Napoli , Italy
| | - Giuseppe Sessa
- b Dipartimento della Ricerca , Istituto Nazionale Tumori Fondazione "G. Pascale" , Napoli , Italy
| | - Giuseppe Pirozzi
- b Dipartimento della Ricerca , Istituto Nazionale Tumori Fondazione "G. Pascale" , Napoli , Italy
| | - Simona Carfagna
- a Dipartimento di Biologia , Università di Napoli Federico II , Napoli , Italy
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Venkanna D, Südfeld C, Baier T, Homburg SV, Patel AV, Wobbe L, Kruse O. Knock-Down of the IFR1 Protein Perturbs the Homeostasis of Reactive Electrophile Species and Boosts Photosynthetic Hydrogen Production in Chlamydomonas reinhardtii. FRONTIERS IN PLANT SCIENCE 2017; 8:1347. [PMID: 28824682 PMCID: PMC5540887 DOI: 10.3389/fpls.2017.01347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/19/2017] [Indexed: 05/26/2023]
Abstract
The protein superfamily of short-chain dehydrogenases/reductases (SDR), including members of the atypical type (aSDR), covers a huge range of catalyzed reactions and in vivo substrates. This superfamily also comprises isoflavone reductase-like (IRL) proteins, which are aSDRs highly homologous to isoflavone reductases from leguminous plants. The molecular function of IRLs in non-leguminous plants and green microalgae has not been identified as yet, but several lines of evidence point at their implication in reactive oxygen species homeostasis. The Chlamydomonas reinhardtii IRL protein IFR1 was identified in a previous study, analyzing the transcriptomic changes occurring during the acclimation to sulfur deprivation and anaerobiosis, a condition that triggers photobiological hydrogen production in this microalgae. Accumulation of the cytosolic IFR1 protein is induced by sulfur limitation as well as by the exposure of C. reinhardtii cells to reactive electrophile species (RES) such as reactive carbonyls. The latter has not been described for IRL proteins before. Over-accumulation of IFR1 in the singlet oxygen response 1 (sor1) mutant together with the presence of an electrophile response element, known to be required for SOR1-dependent gene activation as a response to RES, in the promoter of IFR1, indicate that IFR1 expression is controlled by the SOR1-dependent pathway. An implication of IFR1 into RES homeostasis, is further implied by a knock-down of IFR1, which results in a diminished tolerance toward RES. Intriguingly, IFR1 knock-down has a positive effect on photosystem II (PSII) stability under sulfur-deprived conditions used to trigger photobiological hydrogen production, by reducing PSII-dependent oxygen evolution, in C. reinhardtii. Reduced PSII photoinhibition in IFR1 knock-down strains prolongs the hydrogen production phase resulting in an almost doubled final hydrogen yield compared to the parental strain. Finally, IFR1 knock-down could be successfully used to further increase hydrogen yields of the high hydrogen-producing mutant stm6, demonstrating that IFR1 is a promising target for genetic engineering approaches aiming at an increased hydrogen production capacity of C. reinhardtii cells.
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Affiliation(s)
- Deepak Venkanna
- Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld UniversityBielefeld, Germany
| | - Christian Südfeld
- Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld UniversityBielefeld, Germany
| | - Thomas Baier
- Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld UniversityBielefeld, Germany
| | - Sarah V. Homburg
- Faculty of Engineering and Mathematics, Fermentation and Formulation of Biologicals and Chemicals, Bielefeld University of Applied SciencesBielefeld, Germany
| | - Anant V. Patel
- Faculty of Engineering and Mathematics, Fermentation and Formulation of Biologicals and Chemicals, Bielefeld University of Applied SciencesBielefeld, Germany
| | - Lutz Wobbe
- Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld UniversityBielefeld, Germany
| | - Olaf Kruse
- Faculty of Biology, Center for Biotechnology (CeBiTec), Bielefeld UniversityBielefeld, Germany
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Salbitani G, Bottone C, Carfagna S. Determination of Reduced and Total Glutathione Content in Extremophilic Microalga Galdieria phlegrea. Bio Protoc 2017; 7:e2372. [PMID: 34541114 DOI: 10.21769/bioprotoc.2372] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 05/21/2017] [Accepted: 06/06/2017] [Indexed: 11/02/2022] Open
Abstract
Glutathione is an important molecule involved in the primary and secondary metabolism of all organisms. The Glutathione redox status is an indicator of the cellular redox state. Therefore, it is important to have precise methods on hand to determine the glutathione redox status in the cell. In this protocol, we describe an improved spectrophotometric method to estimate the content of reduced (GSH) and oxidized (GSSG) forms of glutathione in the extremophilic microalga Galdieria phlegrea.
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Affiliation(s)
- Giovanna Salbitani
- Dipartimento di Biologia, Università di Napoli Federico II, Via Foria 223, I-80139 Napoli, Italy
| | - Claudia Bottone
- Dipartimento di Biologia, Università di Napoli Federico II, Via Foria 223, I-80139 Napoli, Italy
| | - Simona Carfagna
- Dipartimento di Biologia, Università di Napoli Federico II, Via Foria 223, I-80139 Napoli, Italy
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Woodrow P, Ciarmiello LF, Annunziata MG, Pacifico S, Iannuzzi F, Mirto A, D'Amelia L, Dell'Aversana E, Piccolella S, Fuggi A, Carillo P. Durum wheat seedling responses to simultaneous high light and salinity involve a fine reconfiguration of amino acids and carbohydrate metabolism. PHYSIOLOGIA PLANTARUM 2017; 159:290-312. [PMID: 27653956 DOI: 10.1111/ppl.12513] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 08/22/2016] [Accepted: 09/07/2016] [Indexed: 05/03/2023]
Abstract
Durum wheat plants are extremely sensitive to drought and salinity during seedling and early development stages. Their responses to stresses have been extensively studied to provide new metabolic targets and improving the tolerance to adverse environments. Most of these studies have been performed in growth chambers under low light [300-350 µmol m-2 s-1 photosynthetically active radiation (PAR), LL]. However, in nature plants have to face frequent fluctuations of light intensities that often exceed their photosynthetic capacity (900-2000 µmol m-2 s-1 ). In this study we investigated the physiological and metabolic changes potentially involved in osmotic adjustment and antioxidant defense in durum wheat seedlings under high light (HL) and salinity. The combined application of the two stresses decreased the water potential and stomatal conductance without reducing the photosynthetic efficiency of the plants. Glycine betaine (GB) synthesis was inhibited, proline and glutamate content decreased, while γ-aminobutyric acid (GABA), amides and minor amino acids increased. The expression level and enzymatic activities of Δ1-pyrroline-5-carboxylate synthetase, asparagine synthetase and glutamate decarboxylase, as well as other enzymatic activities of nitrogen and carbon metabolism, were analyzed. Antioxidant enzymes and metabolites were also considered. The results showed that the complex interplay seen in durum wheat plants under salinity at LL was simplified: GB and antioxidants did not play a main role. On the contrary, the fine tuning of few specific primary metabolites (GABA, amides, minor amino acids and hexoses) remodeled metabolism and defense processes, playing a key role in the response to simultaneous stresses.
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Affiliation(s)
- Pasqualina Woodrow
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Loredana F Ciarmiello
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Maria Grazia Annunziata
- Department of Metabolic Networks, Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
| | - Severina Pacifico
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Federica Iannuzzi
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Antonio Mirto
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Luisa D'Amelia
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Emilia Dell'Aversana
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Simona Piccolella
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Amodio Fuggi
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
| | - Petronia Carillo
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università degli Studi di Napoli, Caserta, 81100, Italy
- Department of Metabolic Networks, Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
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Chokshi K, Pancha I, Ghosh A, Mishra S. Nitrogen starvation-induced cellular crosstalk of ROS-scavenging antioxidants and phytohormone enhanced the biofuel potential of green microalga Acutodesmus dimorphus. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:60. [PMID: 28293290 PMCID: PMC5345260 DOI: 10.1186/s13068-017-0747-7] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/01/2017] [Indexed: 05/08/2023]
Abstract
BACKGROUND Microalgae accumulate a considerable amount of lipids and carbohydrate under nutrient-deficient conditions, which makes them one of the promising sustainable resources for biofuel production. In the present study, to obtain the biomass with higher lipid and carbohydrate contents, we implemented a short-term nitrogen starvation of 1, 2, and 3 days in a green microalga Acutodesmus dimorphus. Few recent reports suggest that oxidative stress-tolerant microalgae are highly efficient for biofuel production. To study the role of oxidative stress due to nitrogen deficiency, responses of various stress biomarkers like reactive oxygen species (ROS), cellular enzymatic antioxidants superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and non-enzymatic scavengers proline and polyphenols were also evaluated. Further, the endogenous levels of phytohormones abscisic acid (ABA) and indole-3-acetic acid (IAA) were also determined to study their response to nitrogen deficiency. RESULTS We observed that nitrogen starvation of 2 days is effective to produce biomass containing 29.92% of lipid (comprising about 75% of neutral lipid) and 34.80% of carbohydrate, which is significantly higher (about 23 and 64%, respectively) than that of the control culture. Among all nitrogen-starved cultures, the accumulations of ROS were lower in 2 days starved culture, which can be linked with the several folds higher activities of SOD and CAT in this culture. The accumulations of proline and total polyphenols were also significantly higher (about 4.7- and 1.7-folds, respectively, than that of the control) in 2 days nitrogen-starved culture. The levels of phytohormones once decreased significantly after 1 day, increased continuously up to 3 days of nitrogen starvation. CONCLUSION The findings of the present study highlight the interaction of nitrogen starvation-induced oxidative stress with the signaling involved in the growth and development of microalga. The study presents a comprehensive picture of the adaptive mechanisms of the cells from a physiological perspective along with providing the strategy to improve the biofuel potential of A. dimorphus through a short-term nitrogen starvation.
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Affiliation(s)
- Kaumeel Chokshi
- Division of Salt & Marine Chemicals, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
- Academy of Scientific & Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
| | - Imran Pancha
- Division of Salt & Marine Chemicals, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503 Japan
| | - Arup Ghosh
- Academy of Scientific & Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
- Division of Plant Omics, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
| | - Sandhya Mishra
- Division of Salt & Marine Chemicals, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
- Academy of Scientific & Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002 India
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24
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Carfagna S, Bottone C, Cataletto PR, Petriccione M, Pinto G, Salbitani G, Vona V, Pollio A, Ciniglia C. Impact of Sulfur Starvation in Autotrophic and Heterotrophic Cultures of the Extremophilic Microalga Galdieria phlegrea (Cyanidiophyceae). PLANT & CELL PHYSIOLOGY 2016; 57:1890-8. [PMID: 27388343 DOI: 10.1093/pcp/pcw112] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 06/03/2016] [Indexed: 05/18/2023]
Abstract
In plants and algae, sulfate assimilation and cysteine synthesis are regulated by sulfur (S) accessibility from the environment. This study reports the effects of S deprivation in autotrophic and heterotrophic cultures of Galdieria phlegrea (Cyanidiophyceae), a unicellular red alga isolated in the Solfatara crater located in Campi Flegrei (Naples, Italy), where H2S is the prevalent form of gaseous S in the fumarolic fluids and S is widespread in the soils near the fumaroles. This is the first report on the effects of S deprivation on a sulfurous microalga that is also able to grow heterotrophically in the dark. The removal of S from the culture medium of illuminated cells caused a decrease in the soluble protein content and a significant decrease in the intracellular levels of glutathione. Cells from heterotrophic cultures of G. phlegrea exhibited high levels of internal proteins and high glutathione content, which did not diminish during S starvation, but rather glutathione significantly increased. The activity of O-acetylserine(thiol)lyase (OASTL), the enzyme synthesizing cysteine, was enhanced under S deprivation in a time-dependent manner in autotrophic but not in heterotrophic cells. Analysis of the transcript abundance of the OASTL gene supports the OASTL activity increase in autotrophic cultures under S deprivation.
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Affiliation(s)
- Simona Carfagna
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Claudia Bottone
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Pia Rosa Cataletto
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Milena Petriccione
- Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Unità di ricerca per la Frutticoltura, Via Torrino 2, I-81100 Caserta, Italy
| | - Gabriele Pinto
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Giovanna Salbitani
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Vincenza Vona
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Antonino Pollio
- Department of Biology, University of Naples Federico II, Via Foria 223, I-80139 Naples, Italy
| | - Claudia Ciniglia
- Department of Biological and Pharmaceutical Science and Technology, Second University of Naples, Via Vivaldi 43, I-81100 Caserta, Italy
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25
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Nagy V, Vidal-Meireles A, Tengölics R, Rákhely G, Garab G, Kovács L, Tóth SZ. Ascorbate accumulation during sulphur deprivation and its effects on photosystem II activity and H2 production of the green alga Chlamydomonas reinhardtii. PLANT, CELL & ENVIRONMENT 2016; 39:1460-72. [PMID: 26714836 DOI: 10.1111/pce.12701] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/25/2015] [Accepted: 12/18/2015] [Indexed: 05/10/2023]
Abstract
In nature, H2 production in Chlamydomonas reinhardtii serves as a safety valve during the induction of photosynthesis in anoxia, and it prevents the over-reduction of the photosynthetic electron transport chain. Sulphur deprivation of C. reinhardtii also triggers a complex metabolic response resulting in the induction of various stress-related genes, down-regulation of photosynthesis, the establishment of anaerobiosis and expression of active hydrogenase. Photosystem II (PSII) plays dual role in H2 production because it supplies electrons but the evolved O2 inhibits the hydrogenase. Here, we show that upon sulphur deprivation, the ascorbate content in C. reinhardtii increases about 50-fold, reaching the mM range; at this concentration, ascorbate inactivates the Mn-cluster of PSII, and afterwards, it can donate electrons to tyrozin Z(+) at a slow rate. This stage is followed by donor-side-induced photoinhibition, leading to the loss of charge separation activity in PSII and reaction centre degradation. The time point at which maximum ascorbate concentration is reached in the cell is critical for the establishment of anaerobiosis and initiation of H2 production. We also show that ascorbate influenced H2 evolution via altering the photosynthetic electron transport rather than hydrogenase activity and starch degradation.
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Affiliation(s)
- Valéria Nagy
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
| | - André Vidal-Meireles
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
| | - Roland Tengölics
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726, Szeged, Hungary
| | - Gábor Rákhely
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726, Szeged, Hungary
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
| | - Győző Garab
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
| | - László Kovács
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
| | - Szilvia Z Tóth
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Temesvári krt. 62, H-6726, Szeged, Hungary
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26
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Tahir J, Dijkwel P. β-Substituting alanine synthases: roles in cysteine metabolism and abiotic and biotic stress signalling in plants. FUNCTIONAL PLANT BIOLOGY : FPB 2016; 43:307-323. [PMID: 32480463 DOI: 10.1071/fp15272] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/10/2015] [Indexed: 06/11/2023]
Abstract
Cysteine is required for the synthesis of proteins and metabolites, and is therefore an indispensable compound for growth and development. The β-substituting alanine synthase (BSAS) gene family encodes enzymes known as O-acetylserine thiol lyases (OASTLs), which carry out cysteine biosynthesis in plants. The functions of the BSAS isoforms have been reported to be crucial in assimilation of S and cysteine biosynthesis, and homeostasis in plants. In this review we explore the functional variation in this classic pyridoxal-phosphate-dependent enzyme family of BSAS isoforms. We discuss how specialisation and divergence in BSAS catalytic activities makes a more dynamic set of biological routers that integrate cysteine metabolism and abiotic and biotic stress signalling in Arabidopsis thaliana (L.) Heynh. and also other species. Our review presents a universal scenario in which enzymes modulating cysteine metabolism promote survival and fitness of the species by counteracting internal and external stress factors.
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Affiliation(s)
- Jibran Tahir
- Institute of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
| | - Paul Dijkwel
- Institute of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
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