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Schlößer M, Moseler A, Bodnar Y, Homagk M, Wagner S, Pedroletti L, Gellert M, Ugalde JM, Lillig CH, Meyer AJ. Localization of four class I glutaredoxins in the cytosol and the secretory pathway and characterization of their biochemical diversification. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:1455-1474. [PMID: 38394181 DOI: 10.1111/tpj.16687] [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: 09/06/2023] [Revised: 01/31/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
Class I glutaredoxins (GRXs) are catalytically active oxidoreductases and considered key proteins mediating reversible glutathionylation and deglutathionylation of protein thiols during development and stress responses. To narrow in on putative target proteins, it is mandatory to know the subcellular localization of the respective GRXs and to understand their catalytic activities and putative redundancy between isoforms in the same compartment. We show that in Arabidopsis thaliana, GRXC1 and GRXC2 are cytosolic proteins with GRXC1 being attached to membranes through myristoylation. GRXC3 and GRXC4 are identified as type II membrane proteins along the early secretory pathway with their enzymatic function on the luminal side. Unexpectedly, neither single nor double mutants lacking both GRXs isoforms in the cytosol or the ER show phenotypes that differ from wild-type controls. Analysis of electrostatic surface potentials and clustering of GRXs based on their electrostatic interaction with roGFP2 mirrors the phylogenetic classification of class I GRXs, which clearly separates the cytosolic GRXC1 and GRXC2 from the luminal GRXC3 and GRXC4. Comparison of all four studied GRXs for their oxidoreductase function highlights biochemical diversification with GRXC3 and GRXC4 being better catalysts than GRXC1 and GRXC2 for the reduction of bis(2-hydroxyethyl) disulfide. With oxidized roGFP2 as an alternative substrate, GRXC1 and GRXC2 catalyze the reduction faster than GRXC3 and GRXC4, which suggests that catalytic efficiency of GRXs in reductive reactions depends on the respective substrate. Vice versa, GRXC3 and GRXC4 are faster than GRXC1 and GRXC2 in catalyzing the oxidation of pre-reduced roGFP2 in the reverse reaction.
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Affiliation(s)
- Michelle Schlößer
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Anna Moseler
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Yana Bodnar
- Institute for Medical Biochemistry and Molecular Biology, University Medicine, University of Greifswald, Ferdinand-Sauerbruch-Straße, D-17475, Greifswald, Germany
| | - Maria Homagk
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Stephan Wagner
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Luca Pedroletti
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Manuela Gellert
- Institute for Medical Biochemistry and Molecular Biology, University Medicine, University of Greifswald, Ferdinand-Sauerbruch-Straße, D-17475, Greifswald, Germany
| | - José M Ugalde
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Christopher H Lillig
- Institute for Medical Biochemistry and Molecular Biology, University Medicine, University of Greifswald, Ferdinand-Sauerbruch-Straße, D-17475, Greifswald, Germany
| | - Andreas J Meyer
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
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Li L, Xie G, Dong P, Tang H, Wu L, Zhang L. Anticyanobacterial effect of p-coumaric acid on Limnothrix sp. determined by proteomic and metabolomic analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171632. [PMID: 38471589 DOI: 10.1016/j.scitotenv.2024.171632] [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: 11/01/2023] [Revised: 02/23/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024]
Abstract
Regulating photosynthetic machinery is a powerful but challenging strategy for selectively inhibiting bloom-forming cyanobacteria, in which photosynthesis mainly occurs in thylakoids. P-coumaric acid (p-CA) has several biological properties, including free radical scavenging and antibacterial effects, and studies have shown that it can damage bacterial cell membranes, reduce chlorophyll a in cyanobacteria, and effectively inhibit algal growth at concentrations exceeding 0.127 g/L. Allelochemicals typically inhibit cyanobacteria by inhibiting photosynthesis; however, research on inhibiting harmful algae using phenolic acids has focused mainly on their inhibitory and toxic effects and metabolite levels, and the molecular mechanism by which p-CA inhibits photosynthesis remains unclear. Thus, we examined the effect of p-CA on the photosynthesis of Limnothrix sp. in detail. We found that p-CA inhibits algal growth and damages photosynthesis-related proteins in Limnothrix sp., reduces carotenoid and allophycocyanin levels, and diminishes the actual quantum yield of Photosystem II (PSII). Moreover, p-CA significantly altered algal cell membrane protein systems, and PSII loss resulting from p-CA exposure promoted reactive oxygen species production. It significantly altered algae cell membrane protein systems. Finally, p-CA was found to be environmentally nontoxic; 80 % of 48-h-old Daphnia magna larvae survived when exposed to 0.15 g/L p-CA. These findings provide insight into the mechanism of cyanobacterial inhibition by p-CA, providing a more practical approach to controlling harmful algal blooms.
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Affiliation(s)
- Lingzhi Li
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Gengxin Xie
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
| | - Pan Dong
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Hui Tang
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Liping Wu
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Liang Zhang
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
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Kim SY, Rasmussen U, Rydberg S. Impact of the neurotoxin β-N-methylamino-L-alanine on the diatom Thalassiosira pseudonana using metabolomics. MARINE POLLUTION BULLETIN 2024; 202:116299. [PMID: 38581736 DOI: 10.1016/j.marpolbul.2024.116299] [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: 10/27/2023] [Revised: 03/14/2024] [Accepted: 03/24/2024] [Indexed: 04/08/2024]
Abstract
The neurotoxin β-N-methylamino-L-alanine (BMAA) has emerged as an environmental factor related to neurodegenerative diseases. BMAA is produced by various microorganisms including cyanobacteria and diatoms, in diverse ecosystems. In the diatom Phaeodactylum tricornutum, BMAA is known to inhibit growth. The present study investigated the impact of BMAA on the diatom Thalassiosira pseudonana by exposing it to different concentrations of exogenous BMAA. Metabolomics was predominantly employed to investigate the effect of BMAA on T. pseudonana, and MetaboAnalyst (https://www.metabo-analyst.ca/) was used to identify BMAA-associated metabolisms/pathways in T. pseudonana. Furthermore, to explore the unique response, specific metabolites were compared between treatments. When the growth was obstructed by BMAA, 17 metabolisms/pathways including nitrogen and glutathione (i.e. oxidative stress) metabolisms, were influenced in T. pseudonana. This study has further determined that 11 out of 17 metabolisms/pathways could be essentially affected by BMAA, leading to the inhibition of diatom growth.
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Affiliation(s)
- Sea-Yong Kim
- Department of Ocean Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ulla Rasmussen
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE 10691 Stockholm, Sweden
| | - Sara Rydberg
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE 10691 Stockholm, Sweden.
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Rudenko NN, Vetoshkina DV, Marenkova TV, Borisova-Mubarakshina MM. Antioxidants of Non-Enzymatic Nature: Their Function in Higher Plant Cells and the Ways of Boosting Their Biosynthesis. Antioxidants (Basel) 2023; 12:2014. [PMID: 38001867 PMCID: PMC10669185 DOI: 10.3390/antiox12112014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
Plants are exposed to a variety of abiotic and biotic stresses leading to increased formation of reactive oxygen species (ROS) in plant cells. ROS are capable of oxidizing proteins, pigments, lipids, nucleic acids, and other cell molecules, disrupting their functional activity. During the process of evolution, numerous antioxidant systems were formed in plants, including antioxidant enzymes and low molecular weight non-enzymatic antioxidants. Antioxidant systems perform neutralization of ROS and therefore prevent oxidative damage of cell components. In the present review, we focus on the biosynthesis of non-enzymatic antioxidants in higher plants cells such as ascorbic acid (vitamin C), glutathione, flavonoids, isoprenoids, carotenoids, tocopherol (vitamin E), ubiquinone, and plastoquinone. Their functioning and their reactivity with respect to individual ROS will be described. This review is also devoted to the modern genetic engineering methods, which are widely used to change the quantitative and qualitative content of the non-enzymatic antioxidants in cultivated plants. These methods allow various plant lines with given properties to be obtained in a rather short time. The most successful approaches for plant transgenesis and plant genome editing for the enhancement of biosynthesis and the content of these antioxidants are discussed.
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Affiliation(s)
- Natalia N. Rudenko
- Institute of Basic Biological Problems, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, Pushchino 142290, Russia; (D.V.V.); (M.M.B.-M.)
| | - Daria V. Vetoshkina
- Institute of Basic Biological Problems, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, Pushchino 142290, Russia; (D.V.V.); (M.M.B.-M.)
| | - Tatiana V. Marenkova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630090, Russia;
| | - Maria M. Borisova-Mubarakshina
- Institute of Basic Biological Problems, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, Pushchino 142290, Russia; (D.V.V.); (M.M.B.-M.)
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Vojta L, Rac-Justament A, Zechmann B, Fulgosi H. Thylakoid Rhodanese-like Protein-Ferredoxin:NADP + Oxidoreductase Interaction Is Integrated into Plant Redox Homeostasis System. Antioxidants (Basel) 2023; 12:1838. [PMID: 37891917 PMCID: PMC10604066 DOI: 10.3390/antiox12101838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/27/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
In vascular plants, the final photosynthetic electron transfer from ferredoxin (Fd) to NADP+ is catalyzed by the flavoenzyme ferredoxin:NADP+ oxidoreductase (FNR). FNR is recruited to thylakoid membranes via an integral membrane protein TROL (thylakoid rhodanese-like protein) and the membrane associated protein Tic62. We have previously demonstrated that the absence of TROL triggers a very efficient superoxide (O2•-) removal mechanism. The dynamic TROL-FNR interaction has been shown to be an apparently overlooked mechanism that maintains linear electron flow before alternative pathway(s) is(are) activated. In this work, we aimed to further test our hypothesis that the FNR-TROL pair could be the source element that triggers various downstream networks of chloroplast ROS scavenging. Tandem affinity purification followed by the MS analysis confirmed the TROL-FNR interaction and revealed possible interaction of TROL with the thylakoid form of the enzyme ascorbate peroxidase (tAPX), which catalyzes the H2O2-dependent oxidation of ascorbate and is, therefore, the crucial component of the redox homeostasis system in plants. Further, EPR analyses using superoxide spin trap DMPO showed that, in comparison with the wild type, plants overexpressing TROL (TROL OX) propagate more O2•- when exposed to high light stress. This indicates an increased sensitivity to oxidative stress in conditions when there is an excess of membrane-bound FNR and less free FNR is found in the stroma. Finally, immunohistochemical analyses of glutathione in different Arabidopsis leaf cell compartments showed highly elevated glutathione levels in TROL OX, indicating an increased demand for this ROS scavenger in these plants, likely needed to prevent the damage of important cellular components caused by reactive oxygen species.
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Affiliation(s)
- Lea Vojta
- Laboratory for Molecular Plant Biology and Biotechnology, Division of Molecular Biology, Institute Ruđer Bošković, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Anja Rac-Justament
- Laboratory for Molecular Plant Biology and Biotechnology, Division of Molecular Biology, Institute Ruđer Bošković, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Bernd Zechmann
- Center for Microscopy and Imaging (CMI), Baylor University, One Bear Place #97046, Waco, TX 76798-7046, USA
| | - Hrvoje Fulgosi
- Laboratory for Molecular Plant Biology and Biotechnology, Division of Molecular Biology, Institute Ruđer Bošković, Bijenička cesta 54, HR-10000 Zagreb, Croatia
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Bagnato L, Tosato E, Gurrieri L, Trost P, Forlani G, Sparla F. Arabidopsis thaliana Sucrose Phosphate Synthase A2 Affects Carbon Partitioning and Drought Response. BIOLOGY 2023; 12:biology12050685. [PMID: 37237499 DOI: 10.3390/biology12050685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
Sucrose is essential for plants for several reasons: It is a source of energy, a signaling molecule, and a source of carbon skeletons. Sucrose phosphate synthase (SPS) catalyzes the conversion of uridine diphosphate glucose and fructose-6-phosphate to sucrose-6-phosphate, which is rapidly dephosphorylated by sucrose phosphatase. SPS is critical in the accumulation of sucrose because it catalyzes an irreversible reaction. In Arabidopsis thaliana, SPSs form a gene family of four members, whose specific functions are not clear yet. In the present work, the role of SPSA2 was investigated in Arabidopsis under both control and drought stress conditions. In seeds and seedlings, major phenotypic traits were not different in wild-type compared with spsa2 knockout plants. By contrast, 35-day-old plants showed some differences in metabolites and enzyme activities even under control conditions. In response to drought, SPSA2 was transcriptionally activated, and the divergences between the two genotypes were higher, with spsa2 showing reduced proline accumulation and increased lipid peroxidation. Total soluble sugars and fructose concentrations were about halved compared with wild-type plants, and the plastid component of the oxidative pentose phosphate pathway was activated. Unlike previous reports, our results support the involvement of SPSA2 in both carbon partitioning and drought response.
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Affiliation(s)
- Laura Bagnato
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy
| | - Edoardo Tosato
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy
| | - Libero Gurrieri
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy
| | - Paolo Trost
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy
| | - Giuseppe Forlani
- Department of Life Science and Biotechnology, University of Ferrara, 44121 Ferrara, Italy
| | - Francesca Sparla
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, 40126 Bologna, Italy
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Manna I, Bandyopadhyay M. The impact of engineered nickel oxide nanoparticles on ascorbate glutathione cycle in Allium cepa L. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:663-678. [PMID: 37363417 PMCID: PMC10284763 DOI: 10.1007/s12298-023-01314-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 06/28/2023]
Abstract
Engineered nickel oxide nanoparticle (NiO-NP) can inflict significant damages on exposed plants, even though very little is known about the modus operandi. The present study investigated effects of NiO-NP on the crucial stress alleviation mechanism Ascorbate-Glutathione Cycle (Asa-GSH cycle) in the model plant Allium cepa. Cellular contents of reduced glutathione (GSH) and oxidised glutathione (GSSG), was disturbed upon NiO-NP exposure. The ratio of GSH to GSSG changed from 20:1 in NC to 4:1 in roots exposed to 125 mg L-1 NiO-NP. Even the lowest treatments of NiO-NP (10 mg L-1) increased ascorbic acid (2.9-folds) and cysteine contents (1.6-folds). Enzymes like glutathione reductase, ascorbate peroxidase, glutathione peroxidase and glutathione-S-transferase also showed altered activities in the affected tissues. Further, intracellular methylglyoxal, a harbinger of ROS (Reactive oxygen species), increased significantly (~ 26 to 65-fold) across different concentrations NiO-NP. Intracellular H2O2 (hydrogen peroxide) and ROS levels increased with NiO-NP doses, as did electrolytic leakage from damaged cells. The present work indicated that multiple pathways were compromised in NiO-NP affected plants and this information can bolster our general understanding of the actual mechanism of its toxicity on living cells, and help formulate strategies to thwart ecological pollution. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01314-8.
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Affiliation(s)
- Indrani Manna
- Plant Molecular Cytogenetics Laboratory, Centre of Advanced Study, Department of Botany, Ballygunge Science College, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019 India
| | - Maumita Bandyopadhyay
- Plant Molecular Cytogenetics Laboratory, Centre of Advanced Study, Department of Botany, Ballygunge Science College, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019 India
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Wang M, Li G, Feng Z, Liu Y, Yuan X, Uscola M. A wider spectrum of avoidance and tolerance mechanisms explained ozone sensitivity of two white poplar ploidy levels. ANNALS OF BOTANY 2023; 131:655-666. [PMID: 36694346 PMCID: PMC10147324 DOI: 10.1093/aob/mcad019] [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: 11/16/2022] [Accepted: 01/23/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND AIMS Polyploidization can improve plant mass yield for bioenergy support, yet few studies have investigated ozone (O3) sensitivity linked to internal regulatory mechanisms at different ploidy levels. METHODS Diploid and triploid Populus tomentosa plants were exposed to ambient and ambient plus 60 ppb [O3]. We explored their differences in sensitivity (leaf morphological, physiological and biochemical traits, and plant mass) as well as mechanisms of avoidance (stomatal conductance, xanthophyll cycle, thermal dissipation) and tolerance (ROS scavenging system) in response to O3 at two developmental phases. KEY RESULTS Triploid plants had the highest plant growth under ambient O3, even under O3 fumigation. However, triploid plants were the most sensitive to O3 and under elevated O3 showed the largest decreases in photosynthetic capacity and performance, as well as increased shoot:root ratio, and the highest lipid peroxidation. Thus, plant mass production could be impacted in triploid plants under long-term O3 contamination. Both diploid and triploid plants reduced stomatal aperture in response to O3, thereby reducing O3 entrance, yet only in diploid plants was reduced stomatal aperture associated with minimal (non-significant) damage to photosynthetic pigments and lower lipid peroxidation. CONCLUSIONS Tolerance mechanisms of plants of both ploidy levels mainly focused on the enzymatic reduction of hydrogen peroxide through catalase and peroxidase, yet these homeostatic regulatory mechanisms were higher in diploid plants. Our study recommends triploid white poplar as a bioenergy species only under short-term O3 contamination. Under continuously elevated O3 over the long term, diploid white poplar may perform better.
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Affiliation(s)
- Miaomiao Wang
- Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - Guolei Li
- Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083, China
- Research Center of Deciduous Oaks, Beijing Forestry University, Beijing 100083, China
- National Innovation Alliance of Valuable Deciduous Tree Industry, Beijing Forestry University, Beijing 100083, China
| | - Zhaozhong Feng
- Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Yong Liu
- Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083, China
- Research Center of Deciduous Oaks, Beijing Forestry University, Beijing 100083, China
- National Innovation Alliance of Valuable Deciduous Tree Industry, Beijing Forestry University, Beijing 100083, China
| | - Xiangyang Yuan
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Mercedes Uscola
- Universidad de Alcalá, Forest Ecology and Restoration Group, Departamento de Ciencias de la Vida, U.D. Ecología, Apdo. 20, E-28805, Alcalá de Henares, Madrid, Spain
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Chen L, Wang M, Wang H, Zhou C, Yuan J, Li X, Pan Y. Isothermal Storage Delays the Senescence of Post-Harvest Apple Fruit through the Regulation of Antioxidant Activity and Energy Metabolism. Foods 2023; 12:foods12091765. [PMID: 37174303 PMCID: PMC10178556 DOI: 10.3390/foods12091765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
The purpose of this work was to elucidate the influence of TF (5 ± 5 °C, and 5 ± 1 °C) and CT (5 ± 0.1 °C served as an isothermal state) storage environment on the antioxidant ability and energy metabolism in post-harvest apple fruit during storage. Specifically, compared with fruit in TFs groups, the quality attributes of apples in the CT group, including firmness, fresh weight, contents of SSC, and TA were maintained at a higher level. In addition, fruit stored in the CT environment revealed a suppressed respiration rate and EL, lower MDA, O2·-, and H2O2 accumulation but increased the activities of SOD, CAT, APX, and GR. At the end of storage, the SOD, CAT, APX, and GR activities of fruit in the CT group were 38.14%,48.04%, 115.29%, and 34.85% higher than that of the TF5 group, respectively. Fruit in the CT environment also revealed higher AsA, GSH, total phenols, and total flavonoid content. In addition, fruit stored in the CT environment maintained higher ATP content, EC, and more active H+-ATPase, Ca2+-ATPase, CCO, and SDH. At the end of storage, the SDH and CCO activities of fruit in the TF0.1 group were 1.74, and 2.59 times higher than that in the TF5 group, respectively. Taken together, we attributed the fact that a constant temperature storage environment can retard the fruit senescence to the enhancement of antioxidant capacities and maintaining of higher energy status in apple fruit.
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Affiliation(s)
- Lan Chen
- International Centre in Fundamental and Engineering Thermophysics, Tianjin University of Commerce, Tianjin 300134, China
- Institute of Food Science and Technology, Chinese Academic of Agricultural Sciences, Beijing 100193, China
- Shanxi Fruit Industry Cold Chain New Material Co., Ltd., Tongchuan 727100, China
| | - Mengya Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Haifen Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Cong Zhou
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Junwei Yuan
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xihong Li
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yanfang Pan
- Institute of Food Science and Technology, Chinese Academic of Agricultural Sciences, Beijing 100193, China
- Tianjin Gasin-DH Preservation Technologies Co., Ltd., Tianjin 300300, China
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Rai GK, Kumar P, Choudhary SM, Singh H, Adab K, Kosser R, Magotra I, Kumar RR, Singh M, Sharma R, Corrado G, Rouphael Y. Antioxidant Potential of Glutathione and Crosstalk with Phytohormones in Enhancing Abiotic Stress Tolerance in Crop Plants. PLANTS (BASEL, SWITZERLAND) 2023; 12:1133. [PMID: 36903992 PMCID: PMC10005112 DOI: 10.3390/plants12051133] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/19/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Glutathione (GSH) is an abundant tripeptide that can enhance plant tolerance to biotic and abiotic stress. Its main role is to counter free radicals and detoxify reactive oxygen species (ROS) generated in cells under unfavorable conditions. Moreover, along with other second messengers (such as ROS, calcium, nitric oxide, cyclic nucleotides, etc.), GSH also acts as a cellular signal involved in stress signal pathways in plants, directly or along with the glutaredoxin and thioredoxin systems. While associated biochemical activities and roles in cellular stress response have been widely presented, the relationship between phytohormones and GSH has received comparatively less attention. This review, after presenting glutathione as part of plants' feedback to main abiotic stress factors, focuses on the interaction between GSH and phytohormones, and their roles in the modulation of the acclimatation and tolerance to abiotic stress in crops plants.
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Affiliation(s)
- Gyanendra Kumar Rai
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu 180009, India
| | - Pradeep Kumar
- Division of Integrated Farming System, ICAR—Central Arid Zone Research Institute, Jodhpur 342003, India
| | - Sadiya M. Choudhary
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu 180009, India
| | - Hira Singh
- Department of Vegetable Science, Punjab Agricultural University, Ludhiana 141004, India
| | - Komal Adab
- Department of Biotechnology, BGSB University, Rajouri 185131, India
| | - Rafia Kosser
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu 180009, India
| | - Isha Magotra
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu 180009, India
| | - Ranjeet Ranjan Kumar
- Division of Biochemistry, ICAR—Indian Agricultural Research Institute, New Delhi 110001, India
| | - Monika Singh
- GLBajaj Institute of Technology and Management, Greater Noida 201306, India
| | - Rajni Sharma
- Department of Agronomy, Punjab Agricultural University, Ludhiana 141004, India
| | - Giandomenico Corrado
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
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Hipsch M, Michael Y, Lampl N, Sapir O, Cohen Y, Helman D, Rosenwasser S. Early detection of late blight in potato by whole-plant redox imaging. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:649-664. [PMID: 36534114 DOI: 10.1111/tpj.16071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Late blight caused by the oomycete Phytophthora infestans is a most devastating disease of potatoes (Solanum tuberosum). Its early detection is crucial for suppressing disease spread. Necrotic lesions are normally seen in leaves at 4 days post-inoculation (dpi) when colonized cells are dead, but early detection of the initial biotrophic growth stage, when the pathogen feeds on living cells, is challenging. Here, the biotrophic growth phase of P. infestans was detected by whole-plant redox imaging of potato plants expressing chloroplast-targeted reduction-oxidation sensitive green fluorescent protein (chl-roGFP2). Clear spots on potato leaves with a lower chl-roGFP2 oxidation state were detected as early as 2 dpi, before any visual symptoms were recorded. These spots were particularly evident during light-to-dark transitions, and reflected the mislocalization of chl-roGFP2 outside the chloroplasts. Image analysis based on machine learning enabled systematic identification and quantification of spots, and unbiased classification of infected and uninfected leaves in inoculated plants. Comparing redox with chlorophyll fluorescence imaging showed that infected leaf areas that exhibit mislocalized chl-roGFP2 also showed reduced non-photochemical quenching and enhanced quantum PSII yield (ΦPSII) compared with the surrounding leaf areas. The data suggest that mislocalization of chloroplast-targeted proteins is an efficient marker of late blight infection, and demonstrate how it can be utilized for non-destructive monitoring of the disease biotrophic stage using whole-plant redox imaging.
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Affiliation(s)
- Matanel Hipsch
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, 7610000, Israel
| | - Yaron Michael
- Department of Soil & Water Sciences, Institute of Environmental Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Nardy Lampl
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, 7610000, Israel
| | - Omer Sapir
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, 7610000, Israel
| | - Yigal Cohen
- Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, 5290000, Israel
| | - David Helman
- Department of Soil & Water Sciences, Institute of Environmental Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
- The Advanced School for Environmental Studies, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shilo Rosenwasser
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, 7610000, Israel
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12
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Lee BR, Park SH, La VH, Bae DW, Kim TH. Drought-Induced Xylem Sulfate Activates the ABA-Mediated Regulation of Sulfate Assimilation and Glutathione Redox in Brassica napus Leaves. Metabolites 2022; 12:1190. [PMID: 36557228 PMCID: PMC9781433 DOI: 10.3390/metabo12121190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/13/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Drought intensity modifies the assimilatory pathway of glutathione (GSH) synthesis. Abscisic acid (ABA) is a representative signaling hormone involved in regulating plant stress responses. This study aimed to investigate an interactive regulation of sulfate and/or ABA in GSH metabolism and redox. The drought-responsive alterations in sulfate assimilation and GSH-based redox reactions were assessed relative to ABA responses on the time-course of drought intensity. Drought-responsive H2O2 concentrations were divided into two distinct phases-an initial 4 days of no change (Ψw ≥ -0.49 MPa) and a phase of higher accumulation during the late phase of the drought (days 10-14; Ψw ≤ -1.34 MPa). During the early phase of the drought, GSH/GSSG redox state turned to the slightly reduced state with a transient increase in GSH, resulting from a strong activation of H2O2 scavenging enzymes, ascorbate peroxidase (APOX) and glutathione reductase (GR). The late phase of the drought was characterized by a decrease in GSH due to cysteine accumulation, shifting GSH- and NADPH-based redox states to higher oxidization, increasing sulfate and ABA in xylem, and causing ABA accumulation in leaves. Regression analysis revealed that sulfate in xylem sap was positively correlated with H2O2 concentrations and ABA was closely related to decreases in the GSH pool and the oxidation of GSH catalyzed by glutathione peroxidase (GPOX). These results indicate that drought-induced oxidation proceeds through the suppression of GSH synthesis and further GSH oxidation in a sulfate-activated ABA-dependent manner.
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Affiliation(s)
- Bok-Rye Lee
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
- Institute of Environmentally-Friendly Agriculture (IEFA), Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sang-Hyun Park
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Van Hien La
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
- Center of Crop Research for Adaption to Climate Change (CRCC), Thai Nguyen University of Agriculture and Forestry, Thai Nguyen 24000, Vietnam
| | - Dong-Won Bae
- Biomaterial Analytical Laboratory, Central Instruments Facility, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Tae-Hwan Kim
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
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13
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Lee BR, La VH, Park SH, Mamun MA, Bae DW, Kim TH. Dimethylthiourea Alleviates Drought Stress by Suppressing Hydrogen Peroxide-Dependent Abscisic Acid-Mediated Oxidative Responses in an Antagonistic Interaction with Salicylic Acid in Brassica napus Leaves. Antioxidants (Basel) 2022; 11:2283. [PMID: 36421468 PMCID: PMC9687642 DOI: 10.3390/antiox11112283] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 08/01/2023] Open
Abstract
In plants, prolonged drought induces oxidative stress, leading to a loss of reducing potential in redox components. Abscisic acid (ABA) is a representative hormonal signal regulating stress responses. This study aimed to investigate the physiological significance of dimethylthiourea (DMTU, an H2O2 scavenger) in the hormonal regulation of the antioxidant system and redox control in rapeseed (Brassica napus L.) leaves under drought stress. Drought treatment for 10 days provoked oxidative stress, as evidenced by the increase in O2•- and H2O2 concentrations, and lipid peroxidation levels, and a decrease in leaf water potential. Drought-induced oxidative responses were significantly alleviated by DMTU treatment. The accumulation of O2•- and H2O2 in drought-treated plants coincided with the enhanced expression of the NADPH oxidase and Cu/Zn-SOD genes, leading to an up-regulation in oxidative signal-inducible 1 (OXI1) and mitogen-activated protein kinase 6 (MAPK6), with a concomitant increase in ABA levels and the up-regulation of ABA-related genes. DMTU treatment under drought largely suppressed the drought-responsive up-regulation of these genes by depressing ABA responses through an antagonistic interaction with salicylic acid (SA). DMTU treatment also alleviated the drought-induced loss of reducing potential in GSH- and NADPH-based redox by the enhanced expression of glutathione reductase 1 (GR1) and up-regulation of oxidoreductase genes (TRXh5 and GRXC9). These results indicate that DMTU effectively alleviates drought-induced oxidative responses by suppressing ABA-mediated oxidative burst signaling in an antagonistic regulation of SA.
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Affiliation(s)
- Bok-Rye Lee
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
- Institute of Environmentally-Friendly Agriculture (IEFA), Chonnam National University, Gwangju 61186, Republic of Korea
| | - Van Hien La
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
- Center of Crop Research for Adaption to Climate Change (CRCC), Thai Nguyen University of Agriculture and Forestry, Thai Nguyen 24000, Vietnam
| | - Sang-Hyun Park
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Md Al Mamun
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong-Won Bae
- Central Instrument Facility, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Tae-Hwan Kim
- Grassland Science Laboratory, Department of Animal Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Science, Chonnam National University, Gwangju 61186, Republic of Korea
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14
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Rafeie M, Shabani L, Sabzalian MR, Gharibi S. Pretreatment with LEDs regulates antioxidant capacity and polyphenolic profile in two genotypes of basil under salinity stress. PROTOPLASMA 2022; 259:1567-1583. [PMID: 35318557 DOI: 10.1007/s00709-022-01746-1] [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: 12/05/2021] [Accepted: 02/10/2022] [Indexed: 05/09/2023]
Abstract
In the present study, we evaluated a pretreatment with four LED light sources (red, blue, red + blue, and white) in two genotypes (green and purple) of basil on the growth parameters, stress oxidative markers, non-enzymatic antioxidants, osmoprotectant compounds, ion content, and polyphenolic profile under both control and salinity stress conditions. The results indicated that 150 mM of NaCl decreased biomass, RWC, and K+/Na+ ratio but increased the content of proline and antioxidant capacity in the leaves of both genotypes of basil grown under GH (greenhouse) conditions. The results suggested that RB LED-exposed plants in the green genotype and R LED-exposed plants in the purple genotype improved accumulation of shoot biomass, K+/Na+ ratio, proline and soluble sugars, glutathione and ascorbate, polyphenolic profile, and thioredoxin reductase activity in the leaves of basil under both control and salinity stress conditions. NaCl stress (150 mM) increased oxidative markers, which are responsible for disturbance of routine functions of various plant cellular modules. LED light pretreatments diminished these markers under both control and salinity stress conditions. It could be concluded that intensification of non-enzymatic antioxidant systems during light-mediated priming can diminish the deleterious effects of ROS induced by NaCl stress (150 mM) through preventing the lipid peroxidation, scavenging cytotoxic H2O2, and enhancement of antioxidant potentials. Therefore, usage of LED lighting systems as a pretreatment or to supplement natural photoperiods under both control and salinity stress conditions may be advantageous for increasing biomass and phytochemical accumulation in basil.
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Affiliation(s)
- Masoomeh Rafeie
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran
| | - Leila Shabani
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran.
- Research Institute of Biotechnology, Shahrekord University, Shahrekord, Iran.
| | - Mohammad R Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran.
| | - Shima Gharibi
- Core Research Facilities (CRF), Isfahan University of Medical Sciences, Isfahan, Iran
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15
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Martin RE, Postiglione AE, Muday GK. Reactive oxygen species function as signaling molecules in controlling plant development and hormonal responses. CURRENT OPINION IN PLANT BIOLOGY 2022; 69:102293. [PMID: 36099672 PMCID: PMC10475289 DOI: 10.1016/j.pbi.2022.102293] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 07/05/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Reactive oxygen species (ROS) serve as second messengers in plant signaling pathways to remodel plant growth and development. New insights into how enzymatic ROS-producing machinery is regulated by hormones or localized during development have provided a framework for understanding the mechanisms that control ROS accumulation patterns. Signaling-mediated increases in ROS can then modulate the activity of proteins through reversible oxidative modification of specific cysteine residues. Plants also control the synthesis of antioxidants, including plant-specialized metabolites, to further define when, where, and how much ROS accumulate. The availability of sophisticated imaging capabilities, combined with a growing tool kit of ROS detection technologies, particularly genetically encoded biosensors, sets the stage for improved understanding of ROS as signaling molecules.
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Affiliation(s)
- R Emily Martin
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA; Department of Biology and the Center for Molecular Signaling, Wake Forest University, Winston-Salem, NC, 27109, USA
| | - Anthony E Postiglione
- Department of Biology and the Center for Molecular Signaling, Wake Forest University, Winston-Salem, NC, 27109, USA
| | - Gloria K Muday
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, 27101, USA; Department of Biology and the Center for Molecular Signaling, Wake Forest University, Winston-Salem, NC, 27109, USA.
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16
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Kim SY, Rasmussen U, Rydberg S. Effect and function of β-N-methylamino-L-alanine in the diatom Phaeodactylum tricornutum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154778. [PMID: 35341850 DOI: 10.1016/j.scitotenv.2022.154778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
The neurotoxin β-N-methylamino-L-alanine (BMAA) is an environmental factor connected to neurodegenerative diseases. BMAA can be produced by various microorganisms (e.g. bacteria, cyanobacteria, dinoflagellates and diatoms) present in diverse ecosystems. No previous study has revealed the function of BMAA in diatoms. In the present study, we combined physiological data with metabolomic and transcriptional data in order to investigate the effect and function of BMAA in the diatom Phaeodactylum tricornutum. P. tricornutum, exposed to different concentrations of exogenous BMAA, showed concentration dependent responses. When the concentration of supplemented BMAA was sufficient to arrest the growth of P. tricornutum, oxidative stress and obstructed carbon fixation were obtained from the specific metabolite and transcriptional data. Results also indicated increased concentration of intracellular chlorophyll a and alterations in the GS-GOGAT cycle, whereas the urea cycle was suppressed. We therefore conclude that BMAA represents a toxic metabolite able to control the growth of P. tricornutum by triggering oxidative stress, and further influencing photosynthesis and nitrogen metabolisms.
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Affiliation(s)
- Sea-Yong Kim
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE 10691 Stockholm, Sweden
| | - Ulla Rasmussen
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE 10691 Stockholm, Sweden
| | - Sara Rydberg
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE 10691 Stockholm, Sweden.
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17
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Balogh E, Kalapos B, Ahres M, Boldizsár Á, Gierczik K, Gulyás Z, Gyugos M, Szalai G, Novák A, Kocsy G. Far-Red Light Coordinates the Diurnal Changes in the Transcripts Related to Nitrate Reduction, Glutathione Metabolism and Antioxidant Enzymes in Barley. Int J Mol Sci 2022; 23:ijms23137479. [PMID: 35806480 PMCID: PMC9267158 DOI: 10.3390/ijms23137479] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 11/16/2022] Open
Abstract
Spectral quality, intensity and period of light modify many regulatory and stress signaling pathways in plants. Both nitrate and sulfate assimilations must be synchronized with photosynthesis, which ensures energy and reductants for these pathways. However, photosynthesis is also a source of reactive oxygen species, whose levels are controlled by glutathione and other antioxidants. In this study, we investigated the effect of supplemental far-red (735 nm) and blue (450 nm) lights on the diurnal expression of the genes related to photoreceptors, the circadian clock, nitrate reduction, glutathione metabolism and various antioxidants in barley. The maximum expression of the investigated four photoreceptor and three clock-associated genes during the light period was followed by the peaking of the transcripts of the three redox-responsive transcription factors during the dark phase, while most of the nitrate and sulfate reduction, glutathione metabolism and antioxidant-enzyme-related genes exhibited high expression during light exposure in plants grown in light/dark cycles for two days. These oscillations changed or disappeared in constant white light during the subsequent two days. Supplemental far-red light induced the activation of most of the studied genes, while supplemental blue light did not affect or inhibited them during light/dark cycles. However, in constant light, several genes exhibited greater expression in blue light than in white and far-red lights. Based on a correlation analysis of the gene expression data, we propose a major role of far-red light in the coordinated transcriptional adjustment of nitrate reduction, glutathione metabolism and antioxidant enzymes to changes of the light spectrum.
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18
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Yang W, Guo R, Pi A, Ding Q, Hao L, Song Q, Chen L, Dou X, Na L, Li S. Long non-coding RNA-EN_181 potentially contributes to the protective effects of N-acetylcysteine against non-alcoholic fatty liver disease in mice. Br J Nutr 2022; 129:1-15. [PMID: 35710106 DOI: 10.1017/s0007114522001829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
N-acetylcysteine (NAC) possesses a strong capability to ameliorate high-fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD) in mice, but the underlying mechanism is still unknown. Our study aimed to clarify the involvement of long non-coding RNA (lncRNA) in the beneficial effects of NAC on HFD-induced NAFLD. C57BL/6J mice were fed a normal-fat diet (10 % fat), a HFD (45 % fat) or a HFD plus NAC (2 g/l). After 14-week of intervention, NAC rescued the deleterious alterations induced by HFD, including the changes in body and liver weights, hepatic TAG, plasma alanine aminotransferase, plasma aspartate transaminase and liver histomorphology (haematoxylin and eosin and Oil red O staining). Through whole-transcriptome sequencing, 52 167 (50 758 known and 1409 novel) hepatic lncRNA were detected. Our cross-comparison data revealed the expression of 175 lncRNA was changed by HFD but reversed by NAC. Five of those lncRNA, lncRNA-NONMMUT148902·1 (NO_902·1), lncRNA-XR_001781798·1 (XR_798·1), lncRNA-NONMMUT141720·1 (NO_720·1), lncRNA-XR_869907·1 (XR_907·1), and lncRNA-ENSMUST00000132181 (EN_181), were selected based on an absolute log2 fold change value of greater than 4, P-value < 0·01 and P-adjusted value < 0·01. Further qRT-PCR analysis showed the levels of lncRNA-NO_902·1, lncRNA-XR_798·1, and lncRNA-EN_181 were decreased by HFD but restored by NAC, consistent with the RNA sequencing. Finally, we constructed a ceRNA network containing lncRNA-EN_181, 3 miRNA, and 13 mRNA, which was associated with the NAC-ameliorated NAFLD. Overall, lncRNA-EN_181 might be a potential target in NAC-ameliorated NAFLD. This finding enhanced our understanding of the biological mechanisms underlying the beneficial role of NAC.
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Affiliation(s)
- Wenwen Yang
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Rui Guo
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Institute of Nutrition and Health, School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Aiwen Pi
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Qinchao Ding
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Liuyi Hao
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Institute of Nutrition and Health, School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Qing Song
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Lin Chen
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Institute of Nutrition and Health, School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
| | - Xiaobing Dou
- School of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
| | - Lixin Na
- Public Health College, Shanghai University of Medicine & Health Sciences, Shanghai201318, People's Republic of China
| | - Songtao Li
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Institute of Nutrition and Health, School of Public Health, Zhejiang Chinese Medical University, Hangzhou310053, People's Republic of China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang310053, People's Republic of China
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19
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Wang L, Han M, Cui Y, Wang X, Shan X, Wang C. Pretreatment with high oxygen controlled atmosphere enhanced fresh-cut white mushroom (Agaricus bisporus) quality via activating wounding stress defenses. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3359-3369. [PMID: 34820866 DOI: 10.1002/jsfa.11683] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/14/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND High oxygen treatment has been proven to be effective in fresh-cut white mushroom preservation, however, the preservation effect and possible mechanisms in high oxygen controlled atmosphere pretreatment (HOCAP) on wounding stress are incompletely understood. RESULTS In this study, based on the time chosen of HOCAP research, whole white mushrooms treated with 3 h HOCAP (80% O2 + 20% CO2 ) and the wounding resistant responses of their slices were mainly investigated through phenylpropane pathway, reactive oxygen species (ROS) scavenging system, and ascorbate-glutathione (AsA-GSH) cycle. Results showed that 3 h HOCAP can induce the production of hydrogen peroxide (H2 O2 ) and superoxide anion (O2 -• ) in the early stage, as well as the NADPH oxidase activity. Enzymes and endogenous antioxidants involved in ROS scavenging were enhanced by HOCAP during the whole storage. Besides, HOCAP maintained high level of phenylalanine ammonia-lyase (PAL) activity, enhanced the content of total phenolic and lignin, accelerated the AsA-GSH cycle. CONCLUSION The results demonstrated that HOCAP induced defense responses by increasing the ROS in the early stage which stimulated the activities of ROS scavenging enzymes, along with the capability of increasing for wounding stress defense and resistance. This study provides a theoretical pretreatment technology for fresh-cut white mushroom preservation. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Liang Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
| | - Minjie Han
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
| | - Yingjun Cui
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
| | - Xiangyou Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
| | - Xinhe Shan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
| | - Chongqing Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zi'bo, China
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20
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Yang J, Xia X, Guo M, Zhong L, Zhang X, Duan X, Liu J, Huang R. 2-Methoxy-1,4-naphthoquinone regulated molecular alternation of Fusarium proliferatum revealed by high-dimensional biological data. RSC Adv 2022; 12:15133-15144. [PMID: 35702436 PMCID: PMC9112881 DOI: 10.1039/d2ra02425j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/02/2022] [Indexed: 11/21/2022] Open
Abstract
Fungi Fusarium proliferatum and the toxins it produces are hazardous to agricultural plants, animals, and human health. However, there is a lack of more effective and environment-friendly natural anti-F. proliferatum agents. In the search for natural anti-fungal agents, we found that naturally originated 2-methoxy-1,4-naphthoquinone (MNQ) with a minimal inhibitory dose of 8.0 mg L-1 possessed a potential inhibitory effect on F. proliferatum. The results of transcriptomic, proteomic, and metabolomic reveal a total of 1314 differential expression genes (DEGs, 873 up-regulated and 441 down-regulated), 259 differential expression proteins (DEPs, 104 up-regulated and 155 down-regulated), and 86 differential accumulation metabolites (DAMs, 49 up-regulated and 37 down-regulated) in MNQ-induced F. proliferatum. Further, the correlation analysis of transcriptomic, proteomic, and metabolomic indicated that these DEGs, DEPs, and DAMs were co-mapped in the pathways of glyoxylate and dicarboxylate metabolism, glycine, serine, and threonine metabolism, and pyruvate metabolism that linked to the TCA cycle. Furthermore, the key DEGs of the significantly co-mapped pathways were verified with qPCR analysis, which was related to the permeability of the cell membrane of F. proliferatum. Thus, these findings will provide fundamental scientific data on the molecular shifts of MNQ-induced F. proliferatum.
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Affiliation(s)
- Jiajia Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University Guangzhou 510642 China
| | - Xuewei Xia
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University Guangzhou 510642 China
| | - Meixia Guo
- Guangzhou Inspection Testing and Certification Group Co., Ltd. Guangzhou 511447 China
| | - Li Zhong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University Guangzhou 510642 China
| | - Xiaoyong Zhang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University Guangzhou 510642 China
| | - Xuewu Duan
- South China Botanical Garden Guangzhou 510650 China
| | - Jun Liu
- Laboratory of Pathogenic Biology, Guangdong Medical University Zhanjiang 524023 China
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University Guangzhou 510642 China
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21
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Dong B, Zhu D, Yao Q, Tang H, Ding X. Hydrogen-rich water treatment maintains the quality of Rosa sterilis fruit by regulating antioxidant capacity and energy metabolism. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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22
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Kiessling E, Peters F, Ebner LJ, Merolla L, Samardzija M, Baumgartner MR, Grimm C, Froese DS. HIF1 and DROSHA are involved in MMACHC repression in hypoxia. Biochim Biophys Acta Gen Subj 2022; 1866:130175. [DOI: 10.1016/j.bbagen.2022.130175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/03/2022] [Accepted: 05/23/2022] [Indexed: 11/25/2022]
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Boro P, Sultana A, Mandal K, Chattopadhyay S. Interplay between glutathione and mitogen-activated protein kinase 3 via transcription factor WRKY40 under combined osmotic and cold stress in Arabidopsis. JOURNAL OF PLANT PHYSIOLOGY 2022; 271:153664. [PMID: 35279560 DOI: 10.1016/j.jplph.2022.153664] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 02/27/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Glutathione (GSH) plays a fundamental role in plant defense. Recent reports showed that enhanced GSH content activates mitogen-activated protein kinases (MPKs). However, the molecular mechanism behind this GSH-mediated MPKs expression during environmental challenges is unexplored. Here, we found that under control and combined abiotic stress-treated conditions, GSH feeding activates MPK3 expression in Arabidopsis thaliana by inducing its promoter, as established through the promoter activation assay. Additionally, transgenic A. thaliana overexpressing the LeMPK3 gene (AtMPK3 line) showed increased γ-ECS expression, which was decreased in mpk3, the MPK3-depleted mutant. An in-gel kinase assay exhibited hyperphosphorylation of Myelin Basic Protein (MBP) in the GSH-fed AtMPK3 transgenic line. Under control and combined abiotic stress treated conditions, expression of transcription factor WRKY40 binding to MPK3 promoter was up-regulated under enhanced GSH condition. Interestingly, GSH feeding was rendered ineffective in altering MPK3 expression in the Atwrky40 mutant, emphasizing the involvement of WRKY40 in GSH-MPK3 interplay. This was further confirmed by a wrky40 co-transformation assay. The immunoprecipitation assay followed by ChIP-qPCR showed a significant increase in the binding of WRKY40 to MPK3 promoter, which further established MPK3-WRKY40 association upon GSH feeding. In conclusion, this study demonstrated that GSH modulates MPK3 expression via WRKY40 in response to stress.
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Affiliation(s)
- Priyanka Boro
- Plant Biology Laboratory, CSIR- Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, West Bengal, India
| | - Asma Sultana
- Department of Botany, JK College, Purulia, West bengal 723 101, India
| | - Kajal Mandal
- Plant Biology Laboratory, CSIR- Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, West Bengal, India
| | - Sharmila Chattopadhyay
- Plant Biology Laboratory, CSIR- Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, West Bengal, India.
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Hernández-Cruz EY, Amador-Martínez I, Aranda-Rivera AK, Cruz-Gregorio A, Pedraza Chaverri J. Renal damage induced by cadmium and its possible therapy by mitochondrial transplantation. Chem Biol Interact 2022; 361:109961. [DOI: 10.1016/j.cbi.2022.109961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/05/2022] [Accepted: 04/22/2022] [Indexed: 12/14/2022]
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25
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Wang Y, Zhang T, Wang J, Xu S, Shen W. Regulation of chlorothalonil degradation by molecular hydrogen. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127291. [PMID: 34583156 DOI: 10.1016/j.jhazmat.2021.127291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/06/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
Pesticides can accumulate throughout the food chain to potentially endanger human health. Although molecular hydrogen (H2) is widely used in industry and medicine, its application in agriculture is just beginning. This study showed that H2 enhances the degradation of the fungicide chlorothalonil (CHT) in plants, but does not reduce its antifungal efficacy. Pharmacological evidence confirmed the contribution of H2-stimulated brassinosteroids (BRs) in the above responses. The genetic increased endogenous H2 with overexpression of hydrogenase 1 gene (CrHYD1) from Chlamydomonas reinhardtii in Arabidopsis not only increased BRs levels, but also eventually intensified the degradation of CHT. Expression of genes encoding some enzymes responsible for detoxification in tomato and Arabidopsis were also stimulated. Contrasting responses were observed after the pharmacological removal of endogenous BR. We further proved that H2 control of CHT degradation was relatively universal, with at least since its degradation in Chinese cabbage, cucumber, radish, alfalfa, rice, and rapeseed were differentially enhanced by H2. Collectively, above results clearly indicated that both exogenously and endogenously applied with H2 could stimulate degradation of CHT partially via BR-dependent detoxification. These results may open a new window for environmental-friendly hydrogen-based agriculture.
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Affiliation(s)
- Yueqiao Wang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Tong Zhang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jun Wang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai 200240, China.
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26
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Li Y, Huang F, Tao Y, Zhou Y, Bai A, Yu Z, Xiao D, Zhang C, Liu T, Hou X, Li Y. BcGR1.1, a Cytoplasmic Localized Glutathione Reductase, Enhanced Tolerance to Copper Stress in Arabidopsis thaliana. Antioxidants (Basel) 2022; 11:389. [PMID: 35204271 PMCID: PMC8869148 DOI: 10.3390/antiox11020389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 11/17/2022] Open
Abstract
Copper is a mineral element, which is necessary for the normal growth and development of plants, but high levels of copper will seriously damage plants. Studies have shown that AtGR1 improves the tolerance of Arabidopsis to aluminum and cadmium stress. However, the role of GR in the copper stress response of plants is still unclear. Here, we identified four genes (named BcGR1.1, BcGR1.2, BcGR2.1 and BcGR2.2, respectively) encoding glutathione reductase (GR) in non-heading Chinese cabbage (Brassica campestris (syn. Brassica rapa) ssp. chinensis), which could be divided into two types based on the subcellular localization. Among them, BcGR1.1, which belonged to the cytoplasmic localization type, was significantly upregulated under copper stress. Compared to WT (the wild type), Arabidopsis thaliana heterologously overexpressed BcGR1.1 had longer roots, higher fresh weight, higher GSH levels and GSH/GSSG (oxidized form of GSH) ratio, and accumulated more superoxide dismutase and peroxidase under copper stress. However, in the AsA-GSH cycle under copper stress, the contents of AsA and AsA/DHA were significantly downregulated, and the contents of DHA and T-AsA (total AsA) were upregulated, in the BcGR1.1-overexpressing Arabidopsis. Therefore, BcGR1.1 could improve the scavenging ability of reactive oxygen species (ROS) by increasing the activity of GR, antioxidant enzymes and the utilization of AsA, and then enhance the copper stress tolerance of plants.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Ying Li
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs of the P. R. China, Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education of the P. R. China, Nanjing Agricultural University, Nanjing 210095, China; (Y.L.); (F.H.); (Y.T.); (Y.Z.); (A.B.); (Z.Y.); (D.X.); (C.Z.); (T.L.); (X.H.)
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Wang C, Chen C, Zhao X, Wu C, Kou X, Xue Z. Propyl Gallate Treatment Improves the Postharvest Quality of Winter Jujube (Zizyphus jujuba Mill. cv. Dongzao) by Regulating Antioxidant Metabolism and Maintaining the Structure of Peel. Foods 2022; 11:foods11020237. [PMID: 35053969 PMCID: PMC8775024 DOI: 10.3390/foods11020237] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/06/2022] [Accepted: 01/11/2022] [Indexed: 02/04/2023] Open
Abstract
The quality and color of winter jujube fruits are easy to change after harvest. We studied the regulation mechanism of propyl gallate (PG) on post-harvest physiological quality of winter jujube, from the perspective of antioxidant metabolism and peel structure. In our research, winter jujube fruits were treated with 0.001 mol L−1 PG solution for 20 min. Our results showed that PG delayed the development of peel color, and improved the firmness, total soluble solids (TSS), and titratable acid (TA) of winter jujube. Meanwhile, the PG treatment had higher content of total phenols, total flavonoids, ascorbic acid (AsA), and reduced glutathione (GSH), and kept the enzyme activity including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxidase (POD) at a higher level. PG treatment reduced membrane oxidative damage and maintained the integrity of pericarp structure by reducing electrolyte leakage (EL), lipoxygenase activity (LOX), hydrogen peroxide (H2O2), and malondialdehyde (MDA) content in the peel. Accordingly, PG improved the postharvest quality of jujube fruits by regulating antioxidant metabolism and maintaining the structure of peel. The appropriate concentration of PG has good application potential in the storage and preservation of fresh fruits such as winter jujube.
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Affiliation(s)
- Chao Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (C.W.); (X.Z.); (Z.X.)
| | - Cunkun Chen
- National Engineering Technology Research Center for Preservation of Agricultural Products, Key Laboratory of Storage of Agricultural Products, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, Tianjin 300384, China;
| | - Xiaoyang Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (C.W.); (X.Z.); (Z.X.)
| | - Caie Wu
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China;
| | - Xiaohong Kou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (C.W.); (X.Z.); (Z.X.)
- Correspondence:
| | - Zhaohui Xue
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (C.W.); (X.Z.); (Z.X.)
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Yuan Y, Song T, Yu J, Zhang W, Hou X, Kong Ling Z, Cui G. Genome-Wide Investigation of the Cysteine Synthase Gene Family Shows That Overexpression of CSase Confers Alkali Tolerance to Alfalfa ( Medicago sativa L.). FRONTIERS IN PLANT SCIENCE 2022; 12:792862. [PMID: 35058952 PMCID: PMC8765340 DOI: 10.3389/fpls.2021.792862] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Alfalfa is widely grown worldwide as a perennial high-quality legume forage and as a good ecological landcover. The cysteine synthase (CSase) gene family is actively involved in plant growth and development and abiotic stress resistance but has not been systematically investigated in alfalfa. We identified 39 MsCSase genes on 4 chromosomes of the alfalfa genome. Phylogenetic analysis demonstrated that these genes were clustered into six subfamilies, and members of the same subfamily had similar physicochemical properties and sequence structures. Overexpression of the CSase gene in alfalfa increased alkali tolerance. Compared with control plants, the overexpression lines presented higher proline, soluble sugars, and cysteine and reduced glutathione contents and superoxide dismutase and peroxidase activities as well as lower hydrogen peroxide and superoxide anion contents after alkali stress. The relative expression of γ-glutamyl cysteine synthetase gene (a downstream gene of CSase) in the overexpression lines was much higher than that in the control line. The CSase gene enhanced alkalinity tolerance by regulating osmoregulatory substances and improving antioxidant capacity. These results provide a reference for studying the CSase gene family in alfalfa and expanding the alkali tolerance gene resources of forage plants.
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29
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Ugalde JM, Fecker L, Schwarzländer M, Müller-Schüssele SJ, Meyer AJ. Live Monitoring of ROS-Induced Cytosolic Redox Changes with roGFP2-Based Sensors in Plants. Methods Mol Biol 2022; 2526:65-85. [PMID: 35657512 DOI: 10.1007/978-1-0716-2469-2_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Plant cells produce reactive oxygen species (ROS) as by-products of oxygen metabolism and for signal transduction. Depending on their concentration and their site of production, ROS can cause oxidative damage within the cell and must be effectively scavenged. Detoxification of the most stable ROS, hydrogen peroxide (H2O2), via the glutathione-ascorbate pathway may transiently alter the glutathione redox potential (EGSH). Changes in EGSH can thus be considered as an indicator of the oxidative load in the cell. Genetically encoded probes based on roGFP2 enable extended opportunities for in vivo monitoring of H2O2 and EGSH dynamics. Here, we provide detailed protocols for live monitoring of both parameters in the cytosol with the probes Grx1-roGFP2 for EGSH and roGFP2-Orp1 for H2O2, respectively. The protocols have been adapted for live cell imaging with high lateral resolution on a confocal microscope and for multi-parallel measurements in whole organs or intact seedlings in a fluorescence microplate reader. Elicitor-induced ROS generation is used for illustration of the opportunities for dynamic ROS measurements that can be transferred to other research questions and model systems.
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Affiliation(s)
- José Manuel Ugalde
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Lara Fecker
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | | | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany.
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30
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Ugalde JM, Lamig L, Herrera-Vásquez A, Fuchs P, Homagk M, Kopriva S, Müller-Schüssele SJ, Holuigue L, Meyer AJ. A dual role for glutathione transferase U7 in plant growth and protection from methyl viologen-induced oxidative stress. PLANT PHYSIOLOGY 2021; 187:2451-2468. [PMID: 34599589 PMCID: PMC8644736 DOI: 10.1093/plphys/kiab444] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 08/23/2021] [Indexed: 05/17/2023]
Abstract
Plant glutathione S-transferases (GSTs) are glutathione-dependent enzymes with versatile functions, mainly related to detoxification of electrophilic xenobiotics and peroxides. The Arabidopsis (Arabidopsis thaliana) genome codes for 53 GSTs, divided into seven subclasses; however, understanding of their precise functions is limited. A recent study showed that class II TGA transcription factors TGA2, TGA5, and TGA6 are essential for tolerance of UV-B-induced oxidative stress and that this tolerance is associated with an antioxidative function of cytosolic tau-GSTs (GSTUs). Specifically, TGA2 controls the expression of several GSTUs under UV-B light, and constitutive expression of GSTU7 in the tga256 triple mutant is sufficient to revert the UV-B-susceptible phenotype of tga256. To further study the function of GSTU7, we characterized its role in mitigation of oxidative damage caused by the herbicide methyl viologen (MV). Under non-stress conditions, gstu7 null mutants were smaller than wild-type (WT) plants and delayed in the onset of the MV-induced antioxidative response, which led to accumulation of hydrogen peroxide and diminished seedling survival. Complementation of gstu7 by constitutive expression of GSTU7 rescued these phenotypes. Furthermore, live monitoring of the glutathione redox potential in intact cells with the fluorescent probe Grx1-roGFP2 revealed that GSTU7 overexpression completely abolished the MV-induced oxidation of the cytosolic glutathione buffer compared with WT plants. GSTU7 acted as a glutathione peroxidase able to complement the lack of peroxidase-type GSTs in yeast. Together, these findings show that GSTU7 is crucial in the antioxidative response by limiting oxidative damage and thus contributes to oxidative stress resistance in the cell.
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Affiliation(s)
- José Manuel Ugalde
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53113 Bonn, Germany
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Liliana Lamig
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Ariel Herrera-Vásquez
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Philippe Fuchs
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53113 Bonn, Germany
| | - Maria Homagk
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53113 Bonn, Germany
| | - Stanislav Kopriva
- Institute for Plant Sciences, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674 Cologne, Germany
| | | | - Loreto Holuigue
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53113 Bonn, Germany
- Author for communication:
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Hipsch M, Lampl N, Zelinger E, Barda O, Waiger D, Rosenwasser S. Sensing stress responses in potato with whole-plant redox imaging. PLANT PHYSIOLOGY 2021; 187:618-631. [PMID: 33823032 PMCID: PMC8491016 DOI: 10.1093/plphys/kiab159] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 03/22/2021] [Indexed: 05/03/2023]
Abstract
Environmental stresses are among the major factors that limit crop productivity and plant growth. Various nondestructive approaches for monitoring plant stress states have been developed. However, early sensing of the initial biochemical events during stress responses remains a significant challenge. In this work, we established whole-plant redox imaging using potato (Solanum tuberosum) plants expressing a chloroplast-targeted redox-sensitive green fluorescence protein 2 (roGFP2), which reports the glutathione redox potential (EGSH). Ratiometric imaging analysis demonstrated the probe response to redox perturbations induced by H2O2, DTT, or a GSH biosynthesis inhibitor. We mapped alterations in the chloroplast EGSH under several stress conditions including, high-light (HL), cold, and drought. An extremely high increase in chloroplast EGSH was observed under the combination of HL and low temperatures, conditions that specifically induce PSI photoinhibition. Intriguingly, we noted a higher reduced state in newly developed compared with mature leaves under steady-state and stress conditions, suggesting a graded stress sensitivity as part of the plant strategies for coping with stress. The presented observations suggest that whole-plant redox imaging can serve as a powerful tool for the basic understanding of plant stress responses and applied agricultural research, such as toward improving phenotyping capabilities in breeding programs and early detection of stress responses in the field.
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Affiliation(s)
- Matanel Hipsch
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Nardy Lampl
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Einat Zelinger
- Center for Scientific Imaging Core Facility, The Robert H. Smith Faculty of Agriculture, Food & Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Orel Barda
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Daniel Waiger
- Center for Scientific Imaging Core Facility, The Robert H. Smith Faculty of Agriculture, Food & Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Shilo Rosenwasser
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
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32
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Lin P, Di H, Wang G, Li Z, Li H, Zhang F, Sun B. Modified Atmosphere Packaging Maintains the Sensory and Nutritional Qualities of Post-harvest Baby Mustard During Low-Temperature Storage. Front Nutr 2021; 8:730253. [PMID: 34552956 PMCID: PMC8450372 DOI: 10.3389/fnut.2021.730253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/16/2021] [Indexed: 11/14/2022] Open
Abstract
Baby mustard is a popular, yet highly perishable, Brassica vegetable. There is a need to develop effective methods for maintaining post-harvest qualities of baby mustard. Here, the lateral buds of baby mustard were packed in transparent polyethylene bags with no holes (M0), 6 mm in diameter holes (M1), or 12 mm in diameter holes (M2) and stored at 4°C. The effect of different modified atmosphere packaging (MAP) treatments on the sensory quality, health-promoting compounds, and antioxidant capacity was investigated by comparison with non-wrapped baby mustard. M1 and M2 delayed sensory quality deterioration and slowed declines in the content of ascorbic acid, total phenolics, and glucosinolates and antioxidant capacity during storage. M1 was most effective in prolonging the shelf life (three additional days compared with control lateral buds) and maintaining the content of glucosinolates. However, M0 accelerated the decline in the odor score, acceptability score, and ascorbic acid content and shortened the shelf life of baby mustard by more than 5 d compared with the control. These findings indicate that the effect of MAP treatment depends on the size of the holes in the bag. Based on these results, M1 was an alternative method for prolonging the shelf life and maintaining post-harvest qualities of baby mustard stored at 4°C.
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Affiliation(s)
- Peixing Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Hongmei Di
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Guiyuan Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zhiqing Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Huanxiu Li
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Fen Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Bo Sun
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
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Haber Z, Lampl N, Meyer AJ, Zelinger E, Hipsch M, Rosenwasser S. Resolving diurnal dynamics of the chloroplastic glutathione redox state in Arabidopsis reveals its photosynthetically derived oxidation. THE PLANT CELL 2021; 33:1828-1844. [PMID: 33624811 PMCID: PMC8254480 DOI: 10.1093/plcell/koab068] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/23/2021] [Indexed: 05/05/2023]
Abstract
Plants are subjected to fluctuations in light intensity, and this might cause unbalanced photosynthetic electron fluxes and overproduction of reactive oxygen species (ROS). Electrons needed for ROS detoxification are drawn, at least partially, from the cellular glutathione (GSH) pool via the ascorbate-glutathione cycle. Here, we explore the dynamics of the chloroplastic glutathione redox potential (chl-EGSH) using high-temporal-resolution monitoring of Arabidopsis (Arabidopsis thaliana) lines expressing the reduction-oxidation sensitive green fluorescent protein 2 (roGFP2) in chloroplasts. This was carried out over several days under dynamic environmental conditions and in correlation with PSII operating efficiency. Peaks in chl-EGSH oxidation during dark-to-light and light-to-dark transitions were observed. Increasing light intensities triggered a binary oxidation response, with a threshold around the light saturating point, suggesting two regulated oxidative states of the chl-EGSH. These patterns were not affected in npq1 plants, which are impaired in non-photochemical quenching. Oscillations between the two oxidation states were observed under fluctuating light in WT and npq1 plants, but not in pgr5 plants, suggesting a role for PSI photoinhibition in regulating the chl-EGSH dynamics. Remarkably, pgr5 plants showed an increase in chl-EGSH oxidation during the nights following light stresses, linking daytime photoinhibition and nighttime GSH metabolism. This work provides a systematic view of the dynamics of the in vivo chloroplastic glutathione redox state during varying light conditions.
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Affiliation(s)
- Zechariah Haber
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture,
The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Nardy Lampl
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture,
The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), Rheinische
Friedrich–Wilhelms Universität Bonn, Friedrich-Ebert-Allee 144, D-53113
Bonn, Germany
| | - Einat Zelinger
- The Interdepartmental Equipment Unit, The Robert H. Smith Faculty of
Agriculture, Food and Environment, The Hebrew University of Jerusalem,
Rehovot 7610001, Israel
| | - Matanel Hipsch
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture,
The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Shilo Rosenwasser
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture,
The Hebrew University of Jerusalem, Rehovot 7610000, Israel
- Author for correspondence:
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Alamri S, Siddiqui MH, Kushwaha BK, Singh VP, Ali HM. Mitigation of arsenate toxicity by indole-3-acetic acid in brinjal roots: Plausible association with endogenous hydrogen peroxide. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124336. [PMID: 33153795 DOI: 10.1016/j.jhazmat.2020.124336] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/31/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
The role of indole-3-acetic acid (IAA) and hydrogen peroxide (H2O2) crosstalk in regulating metal stress is still less known. Herein, role of IAA in alleviating arsenate (AsV) toxicity in brinjal seedlings along with its probable relation with endogenous H2O2 was investigated. Arsenate hampered root growth due to greater accumulation of As and decrease in phosphorus uptake that resulted into inhibited photosynthesis and cell death. Further, AsV induced oxidative stress markers and damage to macromolecules (lipids and proteins) due to alterations in redox status of glutathione as a result of inhibition in activity of glutathione synthetase and glutathione reductase. However, application of IAA with AsV improved root growth by significantly declining As accumulation and oxidative stress markers, sequestrating As into vacuoles, and improving redox status of glutathione which collectively protected roots from cell death. Interestingly, addition of diphenylene iodonium (DPI, an inhibitor of NADPH oxidase) further increased AsV toxicity even in the presence of IAA. However, application of H2O2 rescued negative effect of DPI. Overall, the results suggested that in IAA-mediated mitigation of AsV toxicity in brinjal roots, endogenous H2O2 might have acted as a downstream signal.
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Affiliation(s)
- Saud Alamri
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 2455, Saudi Arabia
| | - Manzer H Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 2455, Saudi Arabia.
| | - Bishwajit Kumar Kushwaha
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj 211002, India
| | - Vijay Pratap Singh
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj 211002, India
| | - Hayssam M Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 2455, Saudi Arabia
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Silva JNDA, Monteiro NR, Antunes PA, Favareto APA. Maternal and developmental toxicity after exposure to formulation of chlorothalonil and thiophanate-methyl during organogenesis in rats. AN ACAD BRAS CIENC 2020; 92:e20191026. [PMID: 33206784 DOI: 10.1590/0001-3765202020191026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/14/2020] [Indexed: 02/02/2023] Open
Abstract
Chlorothalonil and thiophanate-methyl are fungicides widely used in agriculture. The aim of this study was to assess maternal toxicity and embryotoxic potential of exposure to chlorothalonil and thiophanate-methyl during organogenesis period in rats. Pregnant rats were divided into four groups: control and exposed to 400 (CT400), 800 (CT800) and 1200 mg-1kg bw-1 day (CT1200) of commercial formulation constituted of 200 g of thiophanate-methyl kg-1 and 500 g of chlorothalonil kg-1 by gavage, from 6th to 15th gestational day. Maternal toxicity, liver, kidney and placenta histology, reproductive performance, and external, skeletal and visceral malformations of fetuses were evaluated. Maternal liver weight was decreased in CT1200 group and focal necrosis and microvesicular steatosis, inflammatory infiltrate and hepatocytes with pyknotic nucleus were observed in CT800 and CT1200 groups. Reproductive performance was similar among groups. The percentage of fetuses small for pregnancy age was increase in CT400 and CT800 groups. Moreover, incidence of skeletal anomalies was increased in the three groups exposed to fungicides. Chlorothalonil and thiophanate-methyl exposure showed affect the prenatal development and induce maternal toxicity.
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Affiliation(s)
- Jaqueline N DA Silva
- Universidade do Oeste Paulista/ UNOESTE, Faculdade de Artes, Ciências e Letras de Presidente Prudente/FACLEPP, Rodovia Raposo Tavares, Km 572, Limoeiro, 19067-175 Presidente Prudente, SP, Brazil.,Programa de Pós-Graduação em Meio Ambiente e Desenvolvimento Regional, Universidade do Oeste Paulista/UNOESTE, Rodovia Raposo Tavares, Km 572, Limoeiro, 19067-175 Presidente Prudente, SP, Brazil
| | - Nayara R Monteiro
- Universidade do Oeste Paulista/ UNOESTE, Faculdade de Artes, Ciências e Letras de Presidente Prudente/FACLEPP, Rodovia Raposo Tavares, Km 572, Limoeiro, 19067-175 Presidente Prudente, SP, Brazil
| | - Patricia A Antunes
- Universidade do Oeste Paulista/ UNOESTE, Faculdade de Artes, Ciências e Letras de Presidente Prudente/FACLEPP, Rodovia Raposo Tavares, Km 572, Limoeiro, 19067-175 Presidente Prudente, SP, Brazil
| | - Ana Paula A Favareto
- Programa de Pós-Graduação em Meio Ambiente e Desenvolvimento Regional, Universidade do Oeste Paulista/UNOESTE, Rodovia Raposo Tavares, Km 572, Limoeiro, 19067-175 Presidente Prudente, SP, Brazil
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36
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Wang H, Fan H, Liu H, Jin M, Du S, Li D, Zhang P, Ruan S, Qiu J. Oxidative stress response mechanism of Scenedesmus obliquus to ionic liquids with different number of methyl-substituents. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:122847. [PMID: 32531673 DOI: 10.1016/j.jhazmat.2020.122847] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/23/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Ionic liquids (ILs) have become persistent contaminants in water because of their good solubility and low biodegradability. The oxidative stress responses of Scenedesmus obliquus to three imidazole ILs with different number of methyl-substituents, i.e., 1-decyl-imidazolium chloride ([C10IM]Cl), 1-decyl-3-methylimidazolium chloride ([C10MIM]Cl), and 1-decyl-2,3-dimethylimidazolium chloride ([C10DMIM]Cl), were studied. There was a positive correlation between ROS level and IL concentration. The activities of antioxidant enzymes, i.e., superoxide dismutase, catalase, peroxidase, ascorbate peroxidase, and glutathione peroxidase, and the content of antioxidants, i.e., ascorbic acid and glutathione, changed in IL treatment with a concentration-dependent effect. Proline accumulation increased with increasing IL concentration. Integrated biomarker response (IBR) index analysis, based on the eight oxidative stress response indicators, revealed that the toxicity order was: [C10IM]Cl < [C10DMIM]Cl < [C10MIM]Cl. Proteomic analysis showed that IL affect the type and distribution of proteins in S. obliquus. Chloroplast and photosystem II were affected as cellular component, and the proteins related to oxidative stress are annotated in GO categories. IBR index and proteomic analysis indicate that oxidative stress response is one of the main biomarkers of IL stress.
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Affiliation(s)
- Huan Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Huiyang Fan
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Huijun Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China.
| | - Mingkang Jin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Shaoting Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Dexiao Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Ping Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China
| | - Songlin Ruan
- Laboratory of Plant Molecular Biology & Proteomics, Institute of Biotechnology, Hangzhou Academy of Agricultural Sciences, Hangzhou 310024, China
| | - Jieren Qiu
- Laboratory of Plant Molecular Biology & Proteomics, Institute of Biotechnology, Hangzhou Academy of Agricultural Sciences, Hangzhou 310024, China
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Aliyeva DR, Aydinli LM, Zulfugarov IS, Huseynova IM. Diurnal changes of the ascorbate-glutathione cycle components in wheat genotypes exposed to drought. FUNCTIONAL PLANT BIOLOGY : FPB 2020; 47:998-1006. [PMID: 32564782 DOI: 10.1071/fp19375] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 04/17/2020] [Indexed: 05/19/2023]
Abstract
The ascorbate-glutathione (AsA-GSH) cycle is a major pathway of H2O2 scavenging in plants. The effect of diurnal variations in hydrogen peroxide (H2O2) content, the intensity of lipid peroxidation (malondialdehyde, MDA), photosynthesis, antioxidants and antioxidative enzyme activities involved in AsA-GSH metabolism has been studied comparatively in leaves of durum (Triticum durum Desf.) and bread (Triticum aestivum L.) wheat genotypes exposed to soil drought. Drought stress caused an increase in the content of H2O2, MDA, alterations in the activities of AsA-GSH cycle enzymes and quantitative changes in AsA and GSH content during the day. PSII efficiency was significantly lower in the control and drought exposed leaves at the highest temperature in the afternoon. The ascorbate peroxidase activity was found to increase and ascorbic acid amount decreased with increasing temperature during the day. Further, the glutathione amount and glutathione reductase activity increased at the expense of the regeneration of the oxidised form of glutathione. Our results revealed that wheat can tolerate drought stress by enhancing the antioxidant enzyme activities and alteration of the concentration of ascorbate and glutathione.
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Affiliation(s)
- Durna R Aliyeva
- Institute of Molecular Biology and Biotechnologies, Azerbaijan National Academy of Sciences, 11 Izzat Nabiyev Str., Baku AZ 1073, Azerbaijan
| | - Lala M Aydinli
- Institute of Molecular Biology and Biotechnologies, Azerbaijan National Academy of Sciences, 11 Izzat Nabiyev Str., Baku AZ 1073, Azerbaijan
| | - Ismayil S Zulfugarov
- Institute of Molecular Biology and Biotechnologies, Azerbaijan National Academy of Sciences, 11 Izzat Nabiyev Str., Baku AZ 1073, Azerbaijan; and Department of Integrated Biological Science and Department of Molecular Biology, Pusan National University, Busan 46241, Korea; and Department of Biology, North-Eastern Federal University, 58 Belinsky Str., Yakutsk 677-027, Republic of Sakha (Yakutia), Russian Federation
| | - Irada M Huseynova
- Institute of Molecular Biology and Biotechnologies, Azerbaijan National Academy of Sciences, 11 Izzat Nabiyev Str., Baku AZ 1073, Azerbaijan; and Corresponding author.
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38
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Müller-Schüssele SJ, Wang R, Gütle DD, Romer J, Rodriguez-Franco M, Scholz M, Buchert F, Lüth VM, Kopriva S, Dörmann P, Schwarzländer M, Reski R, Hippler M, Meyer AJ. Chloroplasts require glutathione reductase to balance reactive oxygen species and maintain efficient photosynthesis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:1140-1154. [PMID: 32365245 DOI: 10.1111/tpj.14791] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 05/27/2023]
Abstract
Thiol-based redox-regulation is vital for coordinating chloroplast functions depending on illumination and has been throroughly investigated for thioredoxin-dependent processes. In parallel, glutathione reductase (GR) maintains a highly reduced glutathione pool, enabling glutathione-mediated redox buffering. Yet, how the redox cascades of the thioredoxin and glutathione redox machineries integrate metabolic regulation and detoxification of reactive oxygen species remains largely unresolved because null mutants of plastid/mitochondrial GR are embryo-lethal in Arabidopsis thaliana. To investigate whether maintaining a highly reducing stromal glutathione redox potential (EGSH ) via GR is necessary for functional photosynthesis and plant growth, we created knockout lines of the homologous enzyme in the model moss Physcomitrella patens. In these viable mutant lines, we found decreasing photosynthetic performance and plant growth with increasing light intensities, whereas ascorbate and zeaxanthin/antheraxanthin levels were elevated. By in vivo monitoring stromal EGSH dynamics, we show that stromal EGSH is highly reducing in wild-type and clearly responsive to light, whereas an absence of GR leads to a partial glutathione oxidation, which is not rescued by light. By metabolic labelling, we reveal changing protein abundances in the GR knockout plants, pinpointing the adjustment of chloroplast proteostasis and the induction of plastid protein repair and degradation machineries. Our results indicate that the plastid thioredoxin system is not a functional backup for the plastid glutathione redox systems, whereas GR plays a critical role in maintaining efficient photosynthesis.
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Affiliation(s)
- Stefanie J Müller-Schüssele
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, Bonn, 53113, Germany
| | - Ren Wang
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster, 48143, Germany
| | - Desirée D Gütle
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schänzlestrasse1, Freiburg, 79104, Germany
| | - Jill Romer
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Bonn, 53115, Germany
| | - Marta Rodriguez-Franco
- Cell Biology, Faculty of Biology, University of Freiburg, Schänzlestr. 1, Freiburg, 79104, Germany
| | - Martin Scholz
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster, 48143, Germany
| | - Felix Buchert
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster, 48143, Germany
| | - Volker M Lüth
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schänzlestrasse1, Freiburg, 79104, Germany
| | - Stanislav Kopriva
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, 50674, Germany
| | - Peter Dörmann
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Bonn, 53115, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster, 48143, Germany
| | - Ralf Reski
- Plant Biotechnology, Faculty of Biology, University of Freiburg, Schänzlestrasse1, Freiburg, 79104, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Schänzlestrasse18, Freiburg, 79104, Germany
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster, 48143, Germany
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, Bonn, 53113, Germany
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Li N, Tong M, Glibert PM. Effect of allelochemicals on photosynthetic and antioxidant defense system of Ulva prolifera. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 224:105513. [PMID: 32504860 DOI: 10.1016/j.aquatox.2020.105513] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/28/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Ulva prolifera is a macroalgae that forms massive blooms, negatively impacting natural communities, aquaculture operations and recreation. The effects of the natural products, eugenol, β-myrcene, citral and nonanoic acid on the growth rate, antioxidative defense system and photosynthesis of Ulva prolifera were investigated as a possible control strategy for this harmful taxon. Negative effects on growth were observed with all four chemicals, due to the excessive production of reactive oxygen species and oxidative damage to the thalli. However, the response of U. prolifera under the four chemicals stress was different at the cellular level. β-myrcene, the most effective compound in terms of growth inhibition, induced oxidative stress as shown by the damage of total antioxidant capacity (T-AOC) and the downregulation of the glutathione-ascorbate (GSH-ASA) cycle which inhibited the antioxidative system. This chemical also inhibited photosynthesis and photoprotection mechanisms in U. prolifera, resulting in growth limitation. In contrast, U. prolifera was less affected by the second tested chemical, eugenol, and showed no significant change on photosynthetic efficiency in the presence of the chemical. The inhibition effects of the third and fourth tested chemicals, nonanoic acid and citralon, on growth and on the antioxidant defense system in U. prolifera were inferior. These results provide a potential avenue for controlling green tides in the future.
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Affiliation(s)
- Naicheng Li
- Ocean College, Zhejiang University, Zhoushan, 316021, China
| | - Mengmeng Tong
- Ocean College, Zhejiang University, Zhoushan, 316021, China.
| | - Patricia M Glibert
- University of Maryland Center for Environment Science, Horn Point Laboratory, Cambridge, MD, 21613, USA
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Dourmap C, Roque S, Morin A, Caubrière D, Kerdiles M, Béguin K, Perdoux R, Reynoud N, Bourdet L, Audebert PA, Moullec JL, Couée I. Stress signalling dynamics of the mitochondrial electron transport chain and oxidative phosphorylation system in higher plants. ANNALS OF BOTANY 2020; 125:721-736. [PMID: 31711195 PMCID: PMC7182585 DOI: 10.1093/aob/mcz184] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 11/07/2019] [Indexed: 05/23/2023]
Abstract
BACKGROUND Mitochondria play a diversity of physiological and metabolic roles under conditions of abiotic or biotic stress. They may be directly subjected to physico-chemical constraints, and they are also involved in integrative responses to environmental stresses through their central position in cell nutrition, respiration, energy balance and biosyntheses. In plant cells, mitochondria present various biochemical peculiarities, such as cyanide-insensitive alternative respiration, and, besides integration with ubiquitous eukaryotic compartments, their functioning must be coupled with plastid functioning. Moreover, given the sessile lifestyle of plants, their relative lack of protective barriers and present threats of climate change, the plant cell is an attractive model to understand the mechanisms of stress/organelle/cell integration in the context of environmental stress responses. SCOPE The involvement of mitochondria in this integration entails a complex network of signalling, which has not been fully elucidated, because of the great diversity of mitochondrial constituents (metabolites, reactive molecular species and structural and regulatory biomolecules) that are linked to stress signalling pathways. The present review analyses the complexity of stress signalling connexions that are related to the mitochondrial electron transport chain and oxidative phosphorylation system, and how they can be involved in stress perception and transduction, signal amplification or cell stress response modulation. CONCLUSIONS Plant mitochondria are endowed with a diversity of multi-directional hubs of stress signalling that lead to regulatory loops and regulatory rheostats, whose functioning can amplify and diversify some signals or, conversely, dampen and reduce other signals. Involvement in a wide range of abiotic and biotic responses also implies that mitochondrial stress signalling could result in synergistic or conflicting outcomes during acclimation to multiple and complex stresses, such as those arising from climate change.
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Affiliation(s)
- Corentin Dourmap
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Solène Roque
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Amélie Morin
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Damien Caubrière
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Margaux Kerdiles
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
- Université de Rennes 1, CNRS ECOBIO (Ecosystems-Biodiversity-Evolution) – UMR 6553, Rennes, France
| | - Kyllian Béguin
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
- Université de Rennes 1, CNRS ECOBIO (Ecosystems-Biodiversity-Evolution) – UMR 6553, Rennes, France
| | - Romain Perdoux
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Nicolas Reynoud
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Lucile Bourdet
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Pierre-Alexandre Audebert
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Julien Le Moullec
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
| | - Ivan Couée
- Université de Rennes 1, Department of Life Sciences and Environment, Campus de Beaulieu, Rennes, France
- Université de Rennes 1, CNRS ECOBIO (Ecosystems-Biodiversity-Evolution) – UMR 6553, Rennes, France
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Zhang D, Lv A, Yang T, Cheng X, Zhao E, Zhou P. Protective functions of alternative splicing transcripts ( CdDHN4- L and CdDHN4- S) of CdDHN4 from bermudagrass under multiple abiotic stresses. Gene 2020; 763S:100033. [PMID: 32550559 PMCID: PMC7285969 DOI: 10.1016/j.gene.2020.100033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/25/2020] [Accepted: 04/15/2020] [Indexed: 12/18/2022]
Abstract
Dehydrins (DHNs) play critical roles in plant adaptation to abiotic stresses. The objective of this study was to characterize DHNs in bermudagrass (Cynodon spp.). CdDHN4 gene was cloned from bermudagrass ‘Tifway’. Two CdDHN4 transcripts were detected due to alternative splicing (the nonspliced CdDHN4-L and the spliced CdDHN4-S) and both the CdDHN4-S and CdDHN4-L proteins are YSK2-type DHNs, the Φ-segment is present in CdDHN4-L and absent in CdDHN4-S. Transgenic Arabidopsis thaliana expressing CdDHN4-L or CdDHN4-S exhibited improved tolerance to salt, osmotic, low temperature and drought stress compared to the wild type (WT). The two transgenic lines did not differ in salt or drought tolerance, while plants expressing CdDHN4-S grew better under osmotic stress than those expressing CdDHN4-L. Both transgenic lines exhibited reduced content of malondialdehyde (MDA) and reactive oxygen species (ROS); and higher antioxidant enzymatic activities than the wild type plants under salt or drought stress. CdDHN4-S exhibited a higher ROS-scavenging capacity than CdDHN4-L. Two CdDHN4 transcripts (CdDHN4-L and CdDHN4-S) were detected due to alternative splicing in bermudagrass ‘Tifway’. CdDHN4s transgenic Arabidopsis thaliana exhibited higher tolerance to multiple abiotic stress compared to the wild type. CdDHN4s transgenic lines has lower content of ROS than the wild type under salt or drought stress. CdDHN4-S had a higher ROS-scavenging capacity than CdDHN4-L.
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Key Words
- Abiotic stress
- Alternative splicing
- AsA, ascorbic acid
- Bermudagrass
- CAT, catalase
- DEGs, differentially expressed genes
- DHN, Dehydrin
- DR, disordered region
- Dehydrin
- ETR, electron transport rate
- GSH, glutathione
- IDP, intrinsically disordered protein
- LEA proteins, late-embryogenesis abundant proteins
- MDA, malondialdehyde
- ORF, open reading frame
- PAM, pulse-amplitude modulation
- POD, peroxidase
- ROS
- ROS, reactive oxygen species
- SOD, superoxide dismutase
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Affiliation(s)
- Di Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.,School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Aimin Lv
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tianchen Yang
- School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoqing Cheng
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Enhua Zhao
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Peng Zhou
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
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42
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Harun-Ur-Rashid M, Oogai S, Parveen S, Inafuku M, Iwasaki H, Fukuta M, Amzad Hossain M, Oku H. Molecular cloning of putative chloroplastic cysteine synthase in Leucaena leucocephala. JOURNAL OF PLANT RESEARCH 2020; 133:95-108. [PMID: 31828681 DOI: 10.1007/s10265-019-01158-y] [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: 07/16/2019] [Accepted: 12/02/2019] [Indexed: 05/14/2023]
Abstract
Cysteine biosynthesis is directed by the successive commitments of serine acetyltransferase, and O-acetylserine (thiol) lyase (OASTL) compounds, which subsequently frame the decameric cysteine synthase complex. The isoforms of OASTL are found in three compartments of the cell: the cytosol, plastid, and mitochondria. In this investigation, we first isolated putative chloroplastic OASTL (Ch-OASTL) from Leucaena leucocephala, and the Ch-OASTL was then expressed in BL21-competent Escherichia coli. The putative Ch-OASTL cDNA clone had 1,543 base pairs with 391 amino acids in its open reading frame and a molecular weight of 41.54 kDa. The purified protein product exhibited cysteine synthesis ability, but not mimosine synthesis activity. However, they both make the common α-aminoacrylate intermediate in their first half reaction scheme with the conventional substrate O-acetyl serine (OAS). Hence, we considered putative Ch-OASTL a cysteine-specific enzyme. Kinetic studies demonstrated that the optimum pH for cysteine synthesis was 7.0, and the optimum temperature was 40 °C. In the cysteine synthesis assay, the Km and kcat values were 838 ± 26 µM and 72.83 s-1 for OAS, respectively, and 60 ± 2 µM and 2.43 s-1 for Na2S, respectively. We can infer that putative Ch-OASTL regulatory role is considered a sensor for sulfur constraint conditions, and it acts as a forerunner of various metabolic compound molecules.
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Affiliation(s)
- Md Harun-Ur-Rashid
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
- Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| | - Shigeki Oogai
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
| | - Shahanaz Parveen
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan
- Molecular Biotechnology Group, Tropical Biosphere Research Center, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
- Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| | - Masashi Inafuku
- Molecular Biotechnology Group, Tropical Biosphere Research Center, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Hironori Iwasaki
- Molecular Biotechnology Group, Tropical Biosphere Research Center, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Masakazu Fukuta
- Department of Subtropical Biochemistry and Biotechnology, Graduate School of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan.
| | - Md Amzad Hossain
- Department of Subtropical Biochemistry and Biotechnology, Graduate School of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Hirosuke Oku
- Molecular Biotechnology Group, Tropical Biosphere Research Center, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
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Ren L, Deng S, Chu Y, Zhang Y, Zhao H, Chen H, Zhang D. Single-wall carbon nanotubes improve cell survival rate and reduce oxidative injury in cryopreservation of Agapanthus praecox embryogenic callus. PLANT METHODS 2020; 16:130. [PMID: 32973916 PMCID: PMC7507619 DOI: 10.1186/s13007-020-00674-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 09/15/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND Cryopreservation is the best way for long-term in vitro preservation of plant germplasm resources. The preliminary studies found that reactive oxygen species (ROS) induced oxidative stress and ice-induced membrane damage are the fundamental causes of cell death in cryopreserved samples. How to improve plant cryopreservation survival rate is an important scientific issue in the cryobiology field. RESULTS This study found that the survival rate was significantly improved by adding single-wall carbon nanotubes (SWCNTs) to plant vitrification solution (PVS) in cryopreservation of Agapanthus praecox embryogenic callus (EC), and analyzed the oxidative response of cells during the control and SWCNTs-added cryopreservation protocol. The SWCNTs entered EC at the step of dehydration and mainly located around the cell wall and in the vesicles, and most of SWCNTs moved out of EC during the dilution step. Combination with physiological index and gene quantitative expression results, SWCNTs affect the ROS signal transduction and antioxidant system response during plant cryopreservation. The EC treated by SWCNTs had higher antioxidant levels, like POD, CAT, and GSH than the control group EC. The EC mainly depended on the AsA-GSH and GPX cycle to scavenge H2O2 in the control cryopreservation, but depended on CAT in the SWCNTs-added cryopreservation which lead to low levels of H2O2 and MDA. The elevated antioxidant level in dehydration by adding SWCNTs enhanced cells resistance to injury during cryopreservation. The ROS signals of EC were balanced and stable in the SWCNTs-added cryopreservation. CONCLUSIONS The SWCNTs regulated oxidative stress responses of EC during the process and controlled oxidative damages by the maintenance of ROS homeostasis to achieve a high survival rate after cryopreservation. This study is the first to systematically describe the role of carbon nanomaterial in the regulation of plant oxidative stress response, and provided a novel insight into the application of nanomaterials in the field of cryobiology.
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Affiliation(s)
- Li Ren
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Shan Deng
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Yunxia Chu
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Yiying Zhang
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Hong Zhao
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Hairong Chen
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, NO. 888, Rd. Yezhuang, Shanghai, 201403 China
| | - Di Zhang
- Department of Landscape Science and Engineering, School of Design, Shanghai Jiao Tong University, NO. 800, Rd. Dong Chuan, Shanghai, 200240 China
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Marty L, Bausewein D, Müller C, Bangash SAK, Moseler A, Schwarzländer M, Müller-Schüssele SJ, Zechmann B, Riondet C, Balk J, Wirtz M, Hell R, Reichheld JP, Meyer AJ. Arabidopsis glutathione reductase 2 is indispensable in plastids, while mitochondrial glutathione is safeguarded by additional reduction and transport systems. THE NEW PHYTOLOGIST 2019; 224:1569-1584. [PMID: 31372999 DOI: 10.1111/nph.16086] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/23/2019] [Indexed: 05/27/2023]
Abstract
A highly negative glutathione redox potential (EGSH ) is maintained in the cytosol, plastids and mitochondria of plant cells to support fundamental processes, including antioxidant defence, redox regulation and iron-sulfur cluster biogenesis. Out of two glutathione reductase (GR) proteins in Arabidopsis, GR2 is predicted to be dual-targeted to plastids and mitochondria, but its differential roles in these organelles remain unclear. We dissected the role of GR2 in organelle glutathione redox homeostasis and plant development using a combination of genetic complementation and stacked mutants, biochemical activity studies, immunogold labelling and in vivo biosensing. Our data demonstrate that GR2 is dual-targeted to plastids and mitochondria, but embryo lethality of gr2 null mutants is caused specifically in plastids. Whereas lack of mitochondrial GR2 leads to a partially oxidised glutathione pool in the matrix, the ATP-binding cassette (ABC) transporter ATM3 and the mitochondrial thioredoxin system provide functional backup and maintain plant viability. We identify GR2 as essential in the plastid stroma, where it counters GSSG accumulation and developmental arrest. By contrast a functional triad of GR2, ATM3 and the thioredoxin system in the mitochondria provides resilience to excessive glutathione oxidation.
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Affiliation(s)
- Laurent Marty
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld, 360, D-69120, Heidelberg, Germany
| | - Daniela Bausewein
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld, 360, D-69120, Heidelberg, Germany
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Christopher Müller
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld, 360, D-69120, Heidelberg, Germany
| | - Sajid Ali Khan Bangash
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Anna Moseler
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Markus Schwarzländer
- Institute for Biology and Biotechnology of Plants, University of Münster, Schlossplatz 8, D-48143, Münster, Germany
| | - Stefanie J Müller-Schüssele
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Bernd Zechmann
- Center of Microscopy and Imaging, Baylor University, One Bear Place 97046, Waco, TX, 76798-7046, USA
| | - Christophe Riondet
- Laboratoire Génome et Développement des Plantes, Université de Perpignan, Via Domitia, F-66860, Perpignan, France
- Laboratoire Génome et Développement des Plantes, CNRS, F-66860, Perpignan, France
| | - Janneke Balk
- John Innes Centre and University of East Anglia, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Markus Wirtz
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld, 360, D-69120, Heidelberg, Germany
| | - Rüdiger Hell
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld, 360, D-69120, Heidelberg, Germany
| | - Jean-Philippe Reichheld
- Laboratoire Génome et Développement des Plantes, Université de Perpignan, Via Domitia, F-66860, Perpignan, France
- Laboratoire Génome et Développement des Plantes, CNRS, F-66860, Perpignan, France
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
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Niu L, Yu J, Liao W, Xie J, Yu J, Lv J, Xiao X, Hu L, Wu Y. Proteomic Investigation of S-Nitrosylated Proteins During NO-Induced Adventitious Rooting of Cucumber. Int J Mol Sci 2019; 20:E5363. [PMID: 31661878 PMCID: PMC6862188 DOI: 10.3390/ijms20215363] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/19/2019] [Accepted: 10/23/2019] [Indexed: 02/07/2023] Open
Abstract
Nitric oxide (NO) acts an essential signaling molecule that is involved in regulating various physiological and biochemical processes in plants. However, whether S-nitrosylation is a crucial molecular mechanism of NO is still largely unknown. In this study, 50 μM S-nitrosoglutathione (GSNO) treatment was found to have a maximum biological effect on promoting adventitious rooting in cucumber. Meanwhile, removal of endogenous NO significantly inhibited the development of adventitious roots implying that NO is responsible for promoting the process of adventitious rooting. Moreover, application of GSNO resulted in an increase of intracellular S-nitrosothiol (SNO) levels and endogenous NO production, while decreasing the S-nitrosoglutathione reductase (GSNOR) activity during adventitious rooting, implicating that S-nitrosylation might be involved in NO-induced adventitious rooting in cucumber. Furthermore, the identification of S-nitrosylated proteins was performed utilizing the liquid chromatography/mass spectrometry/mass spectrometry (LC-MS/MS) and biotin-switch technique during the development of adventitious rooting. Among these proteins, the activities and S-nitrosylated level of glyceraldehyde-3-phosphate dehydrogenase (GAPDH), tubulin alpha chain (TUA), and glutathione reductase (GR) were further analyzed as NO direct targets. Our results indicated that NO might enhance the S-nitrosylation level of GAPDH and GR, and was found to subsequently reduce these activities and transcriptional levels. Conversely, S-nitrosylation of TUA increased the expression level of TUA. The results implied that S-nitrosylation of key proteins seems to regulate various pathways through differential S-nitrosylation during adventitious rooting. Collectively, these results suggest that S-nitrosylation could be involved in NO-induced adventitious rooting, and they also provide fundamental evidence for the molecular mechanism of NO signaling during adventitious rooting in cucumber explants.
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Affiliation(s)
- Lijuan Niu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Jian Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Xuemei Xiao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Linli Hu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Yue Wu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
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Bangash SAK, Müller-Schüssele SJ, Solbach D, Jansen M, Fiorani F, Schwarzländer M, Kopriva S, Meyer AJ. Low-glutathione mutants are impaired in growth but do not show an increased sensitivity to moderate water deficit. PLoS One 2019; 14:e0220589. [PMID: 31626663 PMCID: PMC6799929 DOI: 10.1371/journal.pone.0220589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/04/2019] [Indexed: 11/19/2022] Open
Abstract
Glutathione is considered a key metabolite for stress defense and elevated levels have frequently been proposed to positively influence stress tolerance. To investigate whether glutathione affects plant performance and the drought tolerance of plants, wild-type Arabidopsis plants and an allelic series of five mutants (rax1, pad2, cad2, nrc1, and zir1) with reduced glutathione contents between 21 and 63% compared to wild-type glutathione content were phenotypically characterized for their shoot growth under control and water-limiting conditions using a shoot phenotyping platform. Under non-stress conditions the zir1 mutant with only 21% glutathione showed a pronounced dwarf phenotype. All other mutants with intermediate glutathione contents up to 62% in contrast showed consistently slightly smaller shoots than the wild-type. Moderate drought stress imposed through water withdrawal until shoot growth ceased showed that wild-type plants and all mutants responded similarly in terms of chlorophyll fluorescence and growth retardation. These results lead to the conclusion that glutathione is important for general plant performance but that the glutathione content does not affect tolerance to moderate drought conditions typically experienced by crops in the field.
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Affiliation(s)
| | | | - David Solbach
- INRES–Chemical Signalling, University of Bonn, Bonn, Germany
| | - Marcus Jansen
- IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Fabio Fiorani
- IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Markus Schwarzländer
- INRES–Chemical Signalling, University of Bonn, Bonn, Germany
- Bioeconomy Science Center, c/o Forschungszentrum Jülich, Jülich, Germany
| | - Stanislav Kopriva
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Germany
| | - Andreas J. Meyer
- INRES–Chemical Signalling, University of Bonn, Bonn, Germany
- Bioeconomy Science Center, c/o Forschungszentrum Jülich, Jülich, Germany
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47
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Acibenzolar-S-methyl treatment enhances antioxidant ability and phenylpropanoid pathway of blueberries during low temperature storage. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.04.069] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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48
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Mizrachi A, Graff van Creveld S, Shapiro OH, Rosenwasser S, Vardi A. Light-dependent single-cell heterogeneity in the chloroplast redox state regulates cell fate in a marine diatom. eLife 2019; 8:47732. [PMID: 31232691 PMCID: PMC6682412 DOI: 10.7554/elife.47732] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/18/2019] [Indexed: 12/14/2022] Open
Abstract
Diatoms are photosynthetic microorganisms of great ecological and biogeochemical importance, forming vast blooms in aquatic ecosystems. However, we are still lacking fundamental understanding of how individual cells sense and respond to diverse stress conditions, and what acclimation strategies are employed during bloom dynamics. We investigated cellular responses to environmental stress at the single-cell level using the redox sensor roGFP targeted to various organelles in the diatom Phaeodactylum tricornutum. We detected cell-to-cell variability using flow cytometry cell sorting and a microfluidics system for live imaging of oxidation dynamics. Chloroplast-targeted roGFP exhibited a light-dependent, bi-stable oxidation pattern in response to H2O2 and high light, revealing distinct subpopulations of sensitive oxidized cells and resilient reduced cells. Early oxidation in the chloroplast preceded commitment to cell death, and can be used for sensing stress cues and regulating cell fate. We propose that light-dependent metabolic heterogeneity regulates diatoms’ sensitivity to environmental stressors in the ocean. Microscopic algae, such as diatoms, are widely spread throughout the oceans, and are responsible for half of the oxygen we breathe. At certain times of the year these algae grow very rapidly to form large “blooms” that can be detected by satellites in space. These blooms are generally short-lived because the algae are either eaten by other marine organisms, run out of nutrients, or die as a result of being infected by viruses or bacteria. However, some diatom cells survive the end of the bloom and go on to generate new blooms in the future, but it is still not clear how. As the bloom collapses, diatoms experience many stressful conditions which can cause active molecules known as reactive oxygen species, or ROS for short, to accumulate inside cells. Normally growing cells also produce low amounts of ROS, which regulate various processes that are important for maintaining a cell’s health. However, high amounts of ROS can cause damage, which may lead to a cell’s death. Now, Mizrachi et al. investigated why some algae survive while others die in response to stressful conditions, focusing on the amount of ROS that accumulates within the diatom Phaeodactylum tricornutum. Laboratory experiments showed that individual cells of P. tricornutum respond differently to environmental stress, forming two distinct groups of either sensitive or resilient cells. Sensitive cells accumulated high levels of ROS within a cell compartment known as the chloroplast and eventually died. Whereas resilient cells were able to maintain low levels of ROS in the chloroplast and survived long after the other cells perished. Populations of genetically identical diatom cells also formed distinct groups of sensitive and resilient cells, demonstrating that these two opposing reactions to stress are not caused by genetic differences between cells. Lastly, Mizrachi et al. showed that how diatoms acclimate to stress depends on the amount of light they are exposed to. When in the dark, all cells became sensitive to oxidative stress, without forming distinct groups. But, when exposed to strong light that mimics the ocean surface, cells formed distinct groups within the population. This suggests that light regulates how susceptible these microscopic algae are to environmental stress. The different responses within a population may serve as a “bet-hedging” strategy, enabling at least some of the cells to survive unpredicted stressful conditions. The next challenge will be to find out whether algae growing in the oceans also use the same strategy and investigate what impact this has on diatom blooms.
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Affiliation(s)
- Avia Mizrachi
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Shiri Graff van Creveld
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Orr H Shapiro
- Department of Food Quality and Safety, Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion, Israel
| | - Shilo Rosenwasser
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel.,The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Assaf Vardi
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
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49
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Songy A, Fernandez O, Clément C, Larignon P, Fontaine F. Grapevine trunk diseases under thermal and water stresses. PLANTA 2019; 249:1655-1679. [PMID: 30805725 DOI: 10.1007/s00425-019-03111-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/12/2019] [Indexed: 05/08/2023]
Abstract
Heat and water stresses, individually or combined, affect both the plant (development, physiology, and production) and the pathogens (growth, morphology, dissemination, distribution, and virulence). The grapevine response to combined abiotic and biotic stresses is complex and cannot be inferred from the response to each single stress. Several factors might impact the response and the recovery of the grapevine, such as the intensity, duration, and timing of the stresses. In the heat/water stress-GTDs-grapevine interaction, the nature of the pathogens, and the host, i.e., the nature of the rootstock, the cultivar and the clone, has a great importance. This review highlights the lack of studies investigating the response to combined stresses, in particular molecular studies, and the misreading of the relationship between rootstock and scion in the relationship GTDs/abiotic stresses. Grapevine trunk diseases (GTDs) are one of the biggest threats to vineyard sustainability in the next 30 years. Although many treatments and practices are used to manage GTDs, there has been an increase in the prevalence of these diseases due to several factors such as vineyard intensification, aging vineyards, or nursery practices. The ban of efficient treatments, i.e., sodium arsenite, carbendazim, and benomyl, in the early 2000s may be partly responsible for the fast spread of these diseases. However, GTD-associated fungi can act as endophytes for several years on, or inside the vine until the appearance of the first symptoms. This prompted several researchers to hypothesise that abiotic conditions, especially thermal and water stresses, were involved in the initiation of GTD symptoms. Unfortunately, the frequency of these abiotic conditions occurring is likely to increase according to the recent consensus scenario of climate change, especially in wine-growing areas. In this article, following a review on the impact of combined thermal and water stresses on grapevine physiology, we will examine (1) how this combination of stresses might influence the lifestyle of GTD pathogens, (2) learnings from grapevine field experiments and modelling aiming at studying biotic and abiotic stresses, and (3) what mechanistic concepts can be used to explain how these stresses might affect the grapevine plant status.
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Affiliation(s)
- A Songy
- SFR Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes EA 4707, BP 1039, 51687, Reims Cedex 2, France
| | - O Fernandez
- SFR Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes EA 4707, BP 1039, 51687, Reims Cedex 2, France
| | - C Clément
- SFR Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes EA 4707, BP 1039, 51687, Reims Cedex 2, France
| | - P Larignon
- Institut Français de la Vigne et du Vin Pôle Rhône-Méditerranée, France, 7 avenue Cazeaux, 30230, Rodilhan, France
| | - F Fontaine
- SFR Condorcet FR CNRS 3417, Université de Reims Champagne-Ardenne, Résistance Induite et Bioprotection des Plantes EA 4707, BP 1039, 51687, Reims Cedex 2, France.
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50
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Díaz-Guerra L, Llorens L, Julkunen-Tiitto R, Nogués I, Font J, González JA, Verdaguer D. Leaf biochemical adjustments in two Mediterranean resprouter species facing enhanced UV levels and reduced water availability before and after aerial biomass removal. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 137:130-143. [PMID: 30780050 DOI: 10.1016/j.plaphy.2019.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/22/2019] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Effects of supplemented UV radiation and diminished water supply on the leaf concentrations of phenols and antioxidants of two Mediterranean resprouter species, Arbutus unedo and Quercus suber, were assessed before and after entire aerial biomass removal. Potted seedlings of both species were grown outdoors for 8 months with enhanced UV-A + UV-B, enhanced UV-A or ambient UV, in combination with two watering conditions (field capacity or watering reduction). After this period, all aerial biomass was removed and new shoots (resprouts) developed for a further 8 months under the two treatments. In general, the investment in leaf phenols was substantially greater in A. unedo than in Q. suber, while Q. suber allocated more resources to non-phenolic antioxidants (ascorbate and glutathione). In response to enhanced UV-B radiation, Q. suber leaves rose their UV-screening capacity mainly via accumulation of kaempferols, accompanied by an increased concentration of rutins, being these effects exacerbated under low-watering conditions. Conversely, A. unedo leaves responded to UV-B radiation reinforcing the antioxidant machinery by increasing the overall amount of flavonols (especially quercetins) in seedlings, and of ascorbate and glutathione, along with catalase activity, in resprouts. Nevertheless, UV effects on the amount/activity of non-phenolic antioxidants of A. unedo resprouts were modulated by water supply. Indeed, the highest concentration of glutathione was found under the combination of enhanced UV-B radiation and reduced watering, suggesting an enlargement of the antioxidant response in A. unedo resprouts. Different biochemical responses to enhanced UV and drier conditions in seedlings and resprouts of these two species might modulate their competitive interactions in the near future.
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Affiliation(s)
- L Díaz-Guerra
- Department of Environmental Sciences, Faculty of Sciences, University of Girona, Campus Montilivi, C/ Maria Aurèlia Capmany i Farnés 69, E-17003, Girona, Spain.
| | - L Llorens
- Department of Environmental Sciences, Faculty of Sciences, University of Girona, Campus Montilivi, C/ Maria Aurèlia Capmany i Farnés 69, E-17003, Girona, Spain
| | - R Julkunen-Tiitto
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland
| | - I Nogués
- Institute of Agro-Environmental and Forest Biology (IBAF-CNR), National Research Council, Via Salaria km 29, 300-00015, Monterotondo Scalo, Roma, Italy
| | - J Font
- Department of Environmental Sciences, Faculty of Sciences, University of Girona, Campus Montilivi, C/ Maria Aurèlia Capmany i Farnés 69, E-17003, Girona, Spain; Faculty of Sciences and Technology, University of Vic - Central University of Catalonia, E-08500, Vic, Spain
| | - J A González
- Department of Physics, Polytechnic School, University of Girona, Campus Montilivi, C/ Maria Aurèlia Capmany i Farnés 61, E-17003, Girona, Spain
| | - D Verdaguer
- Department of Environmental Sciences, Faculty of Sciences, University of Girona, Campus Montilivi, C/ Maria Aurèlia Capmany i Farnés 69, E-17003, Girona, Spain
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