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Wang Y, Sun X, Peng J, Li F, Ali F, Wang Z. Regulation of seed germination: ROS, epigenetic, and hormonal aspects. J Adv Res 2024:S2090-1232(24)00225-X. [PMID: 38838783 DOI: 10.1016/j.jare.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND The whole life of a plant is regulated by complex environmental or hormonal signaling networks that control genomic stability, environmental signal transduction, and gene expression affecting plant development and viability. Seed germination, responsible for the transformation from seed to seedling, is a key initiation step in plant growth and is controlled by unique physiological and biochemical processes. It is continuously modulated by various factors including epigenetic modifications, hormone transport, ROS signaling, and interaction among them. ROS showed versatile crucial functions in seed germination including various physiological oxidations to nucleic acid, protein, lipid, or chromatin in the cytoplasm, cell wall, and nucleus. AIM of review: This review intends to provide novel insights into underlying mechanisms of seed germination especially associated with the ROS, and considers how these versatile regulatory mechanisms can be developed as useful tools for crop improvement. KEY SCIENTIFIC CONCEPTS OF REVIEW We have summarized the generation and elimination of ROS during seed germination, with a specific focus on uncovering and understanding the mechanisms of seed germination at the level of phytohormones, ROS, and epigenetic switches, as well as the close connections between them. The findings exhibit that ROS plays multiple roles in regulating the ethylene, ABA, and GA homeostasis as well as the Ca2+ signaling, NO signaling, and MAPK cascade in seed germination via either the signal trigger or the oxidative modifier agent. Further, ROS shows the potential in the nuclear genome remodeling and some epigenetic modifiers function, although the detailed mechanisms are unclear in seed germination. We propose that ROS functions as a hub in the complex network regulating seed germination.
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Affiliation(s)
- Yakong Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China; State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Xiangyang Sun
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China
| | - Jun Peng
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, Hainan, China; State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Fuguang Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, Hainan, China
| | - Faiza Ali
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China.
| | - Zhi Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, Hainan, China; State Key Laboratory of Cotton Bio‑breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
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2
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Vogelsang L, Eirich J, Finkemeier I, Dietz KJ. Specificity and dynamics of H 2O 2 detoxification by the cytosolic redox regulatory network as revealed by in vitro reconstitution. Redox Biol 2024; 72:103141. [PMID: 38599017 PMCID: PMC11022108 DOI: 10.1016/j.redox.2024.103141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/12/2024] Open
Abstract
The thiol redox state is a decisive functional characteristic of proteins in cell biology. Plasmatic cell compartments maintain a thiol-based redox regulatory network linked to the glutathione/glutathione disulfide couple (GSH/GSSG) and the NAD(P)H system. The basic network constituents are known and in vivo cell imaging with gene-encoded probes have revealed insight into the dynamics of the [GSH]2/[GSSG] redox potential, cellular H2O2 and NAD(P)H+H+ amounts in dependence on metabolic and environmental cues. Less understood is the contribution and interaction of the network components, also because of compensatory reactions in genetic approaches. Reconstituting the cytosolic network of Arabidopsis thaliana in vitro from fifteen recombinant proteins at in vivo concentrations, namely glutathione peroxidase-like (GPXL), peroxiredoxins (PRX), glutaredoxins (GRX), thioredoxins, NADPH-dependent thioredoxin reductase A and glutathione reductase and applying Grx1-roGFP2 or roGFP2-Orp1 as dynamic sensors, allowed for monitoring the response to a single H2O2 pulse. The major change in thiol oxidation as quantified by mass spectrometry-based proteomics occurred in relevant peptides of GPXL, and to a lesser extent of PRX, while other Cys-containing peptides only showed small changes in their redox state and protection. Titration of ascorbate peroxidase (APX) into the system together with dehydroascorbate reductase lowered the oxidation of the fluorescent sensors in the network but was unable to suppress it. The results demonstrate the power of the network to detoxify H2O2, the partially independent branches of electron flow with significance for specific cell signaling and the importance of APX to modulate the signaling without suppressing it and shifting the burden to glutathione oxidation.
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Affiliation(s)
- Lara Vogelsang
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany; CeBiTec, Bielefeld University, 33615, Bielefeld, Germany.
| | - Jürgen Eirich
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, 48149, Münster, Germany.
| | - Iris Finkemeier
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, 48149, Münster, Germany.
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany; CeBiTec, Bielefeld University, 33615, Bielefeld, Germany.
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3
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Umnajkitikorn K, Boonchuen P, Senavongse R, Tongta S, Tian Y, Hu Y, Petersen BL, Blennow A. Transcriptomics and starch biosynthesis analysis in leaves and developing seeds of mung bean provide a basis for genetic engineering of starch composition and seed quality. FRONTIERS IN PLANT SCIENCE 2024; 15:1332150. [PMID: 38751837 PMCID: PMC11094274 DOI: 10.3389/fpls.2024.1332150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 04/02/2024] [Indexed: 05/18/2024]
Abstract
Mung bean starch is distinguished by its exceptional high amylose content and regulation of starch biosynthesis in leaves and storage tissues, such as seeds, share considerable similarities. Genetic engineering of starch composition and content, requires detailed knowledge of starch biosynthetic gene expression and enzymatic regulation. In this study we applied detailed transcriptomic analyses to unravel the global differential gene expression patterns in mung bean leaves and in seeds during various stages of development. The objective was to identify candidate genes and regulatory mechanisms that may enable generation of desirable seed qualities through the use of genetic engineering. Notable differences in gene expression, in particular low expression of the Protein Targeting to Starch (PTST), starch synthase (SS) 3, and starch branching enzyme1 (SBE1) encoding genes in developing seeds as compared to leaves were evident. These differences were related to starch molecular structures and granule morphologies. Specifically, the starch molecular size distribution at different stages of seed development correlated with the starch biosynthesis gene expression of the SBE1, SS1, granule-bound starch synthases (GBSS) and isoamylase 1 (ISA1) encoding genes. Furthermore, putative hormonal and redox controlled regulation were observed, which may be explained by abscisic acid (ABA) and indole-3-acetic acid (IAA) induced signal transduction, and redox regulation of ferredoxins and thioredoxins, respectively. The morphology of starch granules in leaves and developing seeds were clearly distinguishable and could be correlated to differential expression of SS1. Here, we present a first comprehensive transcriptomic dataset of developing mung bean seeds, and combined these findings may enable generation of genetic engineering strategies of for example starch biosynthetic genes for increasing starch levels in seeds and constitute a valuable toolkit for improving mung bean seed quality.
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Affiliation(s)
- Kamolchanok Umnajkitikorn
- School of Crop Production Technology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Pakpoom Boonchuen
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Rattanavalee Senavongse
- School of Crop Production Technology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sunanta Tongta
- School of Food Technology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Yu Tian
- Department of Plant and Environmental Sciences, Copenhagen University, Frederiksberg, Denmark
| | - Yaqi Hu
- Department of Plant and Environmental Sciences, Copenhagen University, Frederiksberg, Denmark
| | - Bent Larsen Petersen
- Department of Plant and Environmental Sciences, Copenhagen University, Frederiksberg, Denmark
| | - Andreas Blennow
- Department of Plant and Environmental Sciences, Copenhagen University, Frederiksberg, Denmark
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4
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Wang P, Liu WC, Han C, Wang S, Bai MY, Song CP. Reactive oxygen species: Multidimensional regulators of plant adaptation to abiotic stress and development. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:330-367. [PMID: 38116735 DOI: 10.1111/jipb.13601] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Reactive oxygen species (ROS) are produced as undesirable by-products of metabolism in various cellular compartments, especially in response to unfavorable environmental conditions, throughout the life cycle of plants. Stress-induced ROS production disrupts normal cellular function and leads to oxidative damage. To cope with excessive ROS, plants are equipped with a sophisticated antioxidative defense system consisting of enzymatic and non-enzymatic components that scavenge ROS or inhibit their harmful effects on biomolecules. Nonetheless, when maintained at relatively low levels, ROS act as signaling molecules that regulate plant growth, development, and adaptation to adverse conditions. Here, we provide an overview of current approaches for detecting ROS. We also discuss recent advances in understanding ROS signaling, ROS metabolism, and the roles of ROS in plant growth and responses to various abiotic stresses.
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Affiliation(s)
- Pengtao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Wen-Cheng Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Chao Han
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Situ Wang
- Faculty of Science, McGill University, Montreal, H3B1X8, Canada
| | - Ming-Yi Bai
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
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5
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Neira JL, Palomino-Schätzlein M, Rejas V, Traverso JA, Rico M, López-Gorgé J, Chueca A, Cámara-Artigas A. Three-dimensional solution structure, dynamics and binding of thioredoxin m from Pisum sativum. Int J Biol Macromol 2024; 262:129781. [PMID: 38296131 DOI: 10.1016/j.ijbiomac.2024.129781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/05/2024]
Abstract
Thioredoxins (TRXs) are ubiquitous small, globular proteins involved in cell redox processes. In this work, we report the solution structure of TRX m from Pisum sativum (pea), which has been determined on the basis of 1444 nuclear Overhauser effect- (NOE-) derived distance constraints. The average pairwise root-mean-square deviation (RMSD) for the 20 best structures for the backbone residues (Val7-Glu102) was 1.42 ± 0.15 Å, and 1.97 ± 0.15 Å when all heavy atoms were considered. The structure corresponds to the typical fold of TRXs, with a central five-stranded β-sheet flanked by four α-helices. Some residues had an important exchange dynamic contribution: those around the active site; at the C terminus of β-strand 3; and in the loop preceding α-helix 4. Smaller NOE values were observed at the N and C-terminal residues forming the elements of the secondary structure or, alternatively, in the residues belonging to the loops between those elements. A peptide derived from pea fructose-1,6-biphosphatase (FBPase), comprising the preceding region to the regulatory sequence of FBPase (residues Glu152 to Gln179), was bound to TRX m with an affinity in the low micromolar range, as measured by fluorescence and NMR titration experiments. Upon peptide addition, the intensities of the cross-peaks of all the residues of TRX m were affected, as shown by NMR. The value of the dissociation constant of the peptide from TRX m was larger than that of the intact FBPase, indicating that there are additional factors in other regions of the polypeptide chain of the latter protein affecting the binding to thioredoxin.
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Affiliation(s)
- José L Neira
- IDIBE, Universidad Miguel Hernández, 03202 Elche, Alicante, Spain; Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain.
| | - Martina Palomino-Schätzlein
- ProtoQSAR SL, CEEI-Valencia. Parque Tecnológico de Valencia, Av. Benjamin Franklin 12 (Dep. 8), 46980 Paterna, Valencia, Spain
| | - Virginia Rejas
- Centro de Investigación Príncipe Felipe, Calle de Eduardo Primo Yufera 3, 46012, Valencia, Spain
| | - José A Traverso
- Department of Cell Biology, Faculty of Science, University of Granada, 18001 Granada, Spain
| | - Manual Rico
- Instituto de Quimica Física Blas Cabrera (CSIC), Calle Serrano 119, 28006 Madrid, Spain
| | - Julio López-Gorgé
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental Zaidin, Consejo Superior de Investigaciones Científicas (CSIC), Prof. Albareda 1, 18008 Granada, Spain
| | - Ana Chueca
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental Zaidin, Consejo Superior de Investigaciones Científicas (CSIC), Prof. Albareda 1, 18008 Granada, Spain
| | - Ana Cámara-Artigas
- Departamento de Química y Física, Research Center CIAIMBITAL, Universidad de Almería- ceiA3, 04120 Almería, Spain
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6
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Clapero V, Arrivault S, Stitt M. Natural variation in metabolism of the Calvin-Benson cycle. Semin Cell Dev Biol 2024; 155:23-36. [PMID: 36959059 DOI: 10.1016/j.semcdb.2023.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 03/25/2023]
Abstract
The Calvin-Benson cycle (CBC) evolved over 2 billion years ago but has been subject to massive selection due to falling atmospheric carbon dioxide, rising atmospheric oxygen and changing nutrient and water availability. In addition, large groups of organisms have evolved carbon-concentrating mechanisms (CCMs) that operate upstream of the CBC. Most previous studies of CBC diversity focused on Rubisco kinetics and regulation. Quantitative metabolite profiling provides a top-down strategy to uncover inter-species diversity in CBC operation. CBC profiles were recently published for twenty species including terrestrial C3 species, terrestrial C4 species that operate a biochemical CCM, and cyanobacteria and green algae that operate different types of biophysical CCM. Distinctive profiles were found for species with different modes of photosynthesis, revealing that evolution of the various CCMs was accompanied by co-evolution of the CBC. Diversity was also found between species that share the same mode of photosynthesis, reflecting lineage-dependent diversity of the CBC. Connectivity analysis uncovers constraints due to pathway and thermodynamic topology, and reveals that cross-species diversity in the CBC is driven by changes in the balance between regulated enzymes and in the balance between the CBC and the light reactions or end-product synthesis.
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Affiliation(s)
- Vittoria Clapero
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Golm, D-14476 Potsdam, Germany
| | - Stéphanie Arrivault
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Golm, D-14476 Potsdam, Germany.
| | - Mark Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Golm, D-14476 Potsdam, Germany
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7
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Wu P, Mo W, Tian T, Song K, Lyu Y, Ren H, Zhou J, Yu Y, Lu H. Transfer of disulfide bond formation modules via yeast artificial chromosomes promotes the expression of heterologous proteins in Kluyveromyces marxianus. MLIFE 2024; 3:129-142. [PMID: 38827505 PMCID: PMC11139206 DOI: 10.1002/mlf2.12115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/08/2023] [Accepted: 12/23/2023] [Indexed: 06/04/2024]
Abstract
Kluyveromyces marxianus is a food-safe yeast with great potential for producing heterologous proteins. Improving the yield in K. marxianus remains a challenge and incorporating large-scale functional modules poses a technical obstacle in engineering. To address these issues, linear and circular yeast artificial chromosomes of K. marxianus (KmYACs) were constructed and loaded with disulfide bond formation modules from Pichia pastoris or K. marxianus. These modules contained up to seven genes with a maximum size of 15 kb. KmYACs carried telomeres either from K. marxianus or Tetrahymena. KmYACs were transferred successfully into K. marxianus and stably propagated without affecting the normal growth of the host, regardless of the type of telomeres and configurations of KmYACs. KmYACs increased the overall expression levels of disulfide bond formation genes and significantly enhanced the yield of various heterologous proteins. In high-density fermentation, the use of KmYACs resulted in a glucoamylase yield of 16.8 g/l, the highest reported level to date in K. marxianus. Transcriptomic and metabolomic analysis of cells containing KmYACs suggested increased flavin adenine dinucleotide biosynthesis, enhanced flux entering the tricarboxylic acid cycle, and a preferred demand for lysine and arginine as features of cells overexpressing heterologous proteins. Consistently, supplementing lysine or arginine further improved the yield. Therefore, KmYAC provides a powerful platform for manipulating large modules with enormous potential for industrial applications and fundamental research. Transferring the disulfide bond formation module via YACs proves to be an efficient strategy for improving the yield of heterologous proteins, and this strategy may be applied to optimize other microbial cell factories.
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Affiliation(s)
- Pingping Wu
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Wenjuan Mo
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Tian Tian
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Kunfeng Song
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Yilin Lyu
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Haiyan Ren
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Jungang Zhou
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Yao Yu
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
| | - Hong Lu
- State Key Laboratory of Genetic Engineering, School of Life SciencesFudan UniversityShanghaiChina
- Shanghai Engineering Research Center of Industrial MicroorganismsShanghaiChina
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8
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Nogueira M, Enfissi EMA, Price EJ, Menard GN, Venter E, Eastmond PJ, Bar E, Lewinsohn E, Fraser PD. Ketocarotenoid production in tomato triggers metabolic reprogramming and cellular adaptation: The quest for homeostasis. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:427-444. [PMID: 38032727 PMCID: PMC10826984 DOI: 10.1111/pbi.14196] [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: 01/25/2023] [Revised: 08/29/2023] [Accepted: 09/23/2023] [Indexed: 12/01/2023]
Abstract
Plants are sessile and therefore have developed an extraordinary capacity to adapt to external signals. Here, the focus is on the plasticity of the plant cell to respond to new intracellular cues. Ketocarotenoids are high-value natural red pigments with potent antioxidant activity. In the present study, system-level analyses have revealed that the heterologous biosynthesis of ketocarotenoids in tomato initiated a series of cellular and metabolic mechanisms to cope with the formation of metabolites that are non-endogenous to the plant. The broad multilevel changes were linked to, among others, (i) the remodelling of the plastidial membrane, where the synthesis and storage of ketocarotenoids occurs; (ii) the recruiting of core metabolic pathways for the generation of metabolite precursors and energy; and (iii) redox control. The involvement of the metabolites as regulators of cellular processes shown here reinforces their pivotal role suggested in the remodelled 'central dogma' concept. Furthermore, the role of metabolic reprogramming to ensure cellular homeostasis is proposed.
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Affiliation(s)
- Marilise Nogueira
- School of Biological SciencesRoyal Holloway University of LondonEghamSurreyUK
| | | | - Elliott J. Price
- School of Biological SciencesRoyal Holloway University of LondonEghamSurreyUK
- Present address:
RECETOX, Faculty of ScienceMasaryk UniversityBrnoCzech Republic
| | | | - Eudri Venter
- Plant Sciences for the Bioeconomy, Rothamsted ResearchHarpendenUK
| | | | - Einat Bar
- Department of Aromatic PlantsNewe Ya'ar Research Center Agricultural Research OrganizationRamat YishayIsrael
| | - Efraim Lewinsohn
- Department of Aromatic PlantsNewe Ya'ar Research Center Agricultural Research OrganizationRamat YishayIsrael
| | - Paul D. Fraser
- School of Biological SciencesRoyal Holloway University of LondonEghamSurreyUK
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9
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Bohle F, Rossi J, Tamanna SS, Jansohn H, Schlosser M, Reinhardt F, Brox A, Bethmann S, Kopriva S, Trentmann O, Jahns P, Deponte M, Schwarzländer M, Trost P, Zaffagnini M, Meyer AJ, Müller-Schüssele SJ. Chloroplasts lacking class I glutaredoxins are functional but show a delayed recovery of protein cysteinyl redox state after oxidative challenge. Redox Biol 2024; 69:103015. [PMID: 38183796 PMCID: PMC10808970 DOI: 10.1016/j.redox.2023.103015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/08/2023] [Accepted: 12/25/2023] [Indexed: 01/08/2024] Open
Abstract
Redox status of protein cysteinyl residues is mediated via glutathione (GSH)/glutaredoxin (GRX) and thioredoxin (TRX)-dependent redox cascades. An oxidative challenge can induce post-translational protein modifications on thiols, such as protein S-glutathionylation. Class I GRX are small thiol-disulfide oxidoreductases that reversibly catalyse S-glutathionylation and protein disulfide formation. TRX and GSH/GRX redox systems can provide partial backup for each other in several subcellular compartments, but not in the plastid stroma where TRX/light-dependent redox regulation of primary metabolism takes place. While the stromal TRX system has been studied at detail, the role of class I GRX on plastid redox processes is still unknown. We generate knockout lines of GRXC5 as the only chloroplast class I GRX of the moss Physcomitrium patens. While we find that PpGRXC5 has high activities in GSH-dependent oxidoreductase assays using hydroxyethyl disulfide or redox-sensitive GFP2 as substrates in vitro, Δgrxc5 plants show no detectable growth defect or stress sensitivity, in contrast to mutants with a less negative stromal EGSH (Δgr1). Using stroma-targeted roGFP2, we show increased protein Cys steady state oxidation and decreased reduction rates after oxidative challenge in Δgrxc5 plants in vivo, indicating kinetic uncoupling of the protein Cys redox state from EGSH. Compared to wildtype, protein Cys disulfide formation rates and S-glutathionylation levels after H2O2 treatment remained unchanged. Lack of class I GRX function in the stroma did not result in impaired carbon fixation. Our observations suggest specific roles for GRXC5 in the efficient transfer of electrons from GSH to target protein Cys as well as negligible cross-talk with metabolic regulation via the TRX system. We propose a model for stromal class I GRX function in efficient catalysis of protein dithiol/disulfide equilibria upon redox steady state alterations affecting stromal EGSH and highlight the importance of identifying in vivo target proteins of GRXC5.
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Affiliation(s)
- Finja Bohle
- Molecular Botany, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany; Chemical Signalling, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, D-53113, Bonn, Germany
| | - Jacopo Rossi
- Department of Pharmacy and Biotechnology, University of Bologna, I-40126, Bologna, Italy
| | - Sadia S Tamanna
- Molecular Botany, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Hannah Jansohn
- Molecular Botany, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Marlene Schlosser
- Molecular Botany, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Frank Reinhardt
- Plant Physiology, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Alexa Brox
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, D-53113, Bonn, Germany
| | - Stephanie Bethmann
- Plant Biochemistry, Heinrich-Heine-University Düsseldorf, D-40225, Düsseldorf, Germany
| | - Stanislav Kopriva
- Institute for Plant Sciences, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, 50674, Germany
| | - Oliver Trentmann
- Molecular Botany, Department of Biology, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Peter Jahns
- Plant Biochemistry, Heinrich-Heine-University Düsseldorf, D-40225, Düsseldorf, Germany
| | - Marcel Deponte
- Biochemistry, Department of Chemistry, RPTU Kaiserslautern-Landau, D-67633, Kaiserslautern, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, University of Münster, D-48143, Münster, Germany
| | - Paolo Trost
- Department of Pharmacy and Biotechnology, University of Bologna, I-40126, Bologna, Italy
| | - Mirko Zaffagnini
- Department of Pharmacy and Biotechnology, University of Bologna, I-40126, Bologna, Italy
| | - Andreas J Meyer
- Chemical Signalling, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, D-53113, Bonn, Germany
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10
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Wittmann D, Wang C, Grimm B. More indications for redox-sensitive cysteine residues of the Arabidopsis 5-aminolevulinate dehydratase. FRONTIERS IN PLANT SCIENCE 2024; 14:1294802. [PMID: 38317833 PMCID: PMC10839789 DOI: 10.3389/fpls.2023.1294802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/28/2023] [Indexed: 02/07/2024]
Abstract
Redox-dependent thiol-disulfide switches of cysteine residues are one of the significant posttranslational modifications of proteins to control rapidly their stability, activity, and protein interaction. Redox control also modulates the tetrapyrrole biosynthesis (TBS). Among the redox-dependent TBS enzymes, 5-aminolevulinic acid dehydratase (ALAD) was previously recognized to interact with reductants, such a thioredoxins or NADPH-dependent thioredoxin reductase C. In this report, we aim to verify the redox sensitivity of ALAD and identify the redox-reactive cysteine residues among the six cysteines of the mature protein form Arabidopsis. Based on structural modelling and comparative studies of wild-type ALAD and ALAD mutants with single and double Cys➔Ser substitutions under oxidizing and reducing conditions, we aim to predict the dimerization and oligomerisation of ALAD as well as the crucial Cys residues for disulfide bridge formation and enzyme activity. The Cys404Ser mutation led to a drastic inactivation of ALAD and redox-dependent properties of ALAD were severely impaired, when Cys71 was simultaneously mutated with Cys152 or Cys251. Cys71 is located in a flexible N-terminal arm of ALAD, which could allow intramolecular disulfide bridges with Cys residues at the surface of the remaining globule ALAD structure. As a result, we propose different roles of Cys residues for redox control, catalytic activity and Mg2+-dependent assembly.
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Affiliation(s)
- Daniel Wittmann
- Institute of Biology/Plant Physiology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Chao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Bernhard Grimm
- Institute of Biology/Plant Physiology, Humboldt-Universität zu Berlin, Berlin, Germany
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
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11
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Lawson T, Vialet-Chabrand S. Imaging Spatial and Temporal Variation in Photosynthesis Using Chlorophyll Fluorescence. Methods Mol Biol 2024; 2790:293-316. [PMID: 38649577 DOI: 10.1007/978-1-0716-3790-6_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Chlorophyll fluorescence imaging provides a noninvasive rapid screen to assess the physiological status of a number of leaves or plants simultaneously. Although there are no standard protocols for chlorophyll fluorescence imaging, here we provide an example of routines for some of the typical measurements.
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Affiliation(s)
- Tracy Lawson
- School of Life Sciences, University of Essex, Colchester, UK.
| | - Silvere Vialet-Chabrand
- Horticulture and Product Physiology, Department of Plant Sciences, Wageningen University & Research, Wageningen, The Netherlands
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12
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Mallén-Ponce MJ, Pérez-Pérez ME. Redox-mediated activation of ATG3 promotes ATG8 lipidation and autophagy progression in Chlamydomonas reinhardtii. PLANT PHYSIOLOGY 2023; 194:359-375. [PMID: 37772945 PMCID: PMC10756753 DOI: 10.1093/plphys/kiad520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/05/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023]
Abstract
Autophagy is one of the main degradative pathways used by eukaryotic organisms to eliminate useless or damaged intracellular material to maintain cellular homeostasis under stress conditions. Mounting evidence indicates a strong interplay between the generation of reactive oxygen species and the activation of autophagy. Although a tight redox regulation of autophagy has been shown in several organisms, including microalgae, the molecular mechanisms underlying this control remain poorly understood. In this study, we have performed an in-depth in vitro and in vivo redox characterization of ATG3, an E2-activating enzyme involved in ATG8 lipidation and autophagosome formation, from 2 evolutionary distant unicellular model organisms: the green microalga Chlamydomonas (Chlamydomonas reinhardtii) and the budding yeast Saccharomyces cerevisiae. Our results indicated that ATG3 activity from both organisms is subjected to redox regulation since these proteins require reducing equivalents to transfer ATG8 to the phospholipid phosphatidylethanolamine. We established the catalytic Cys of ATG3 as a redox target in algal and yeast proteins and showed that the oxidoreductase thioredoxin efficiently reduces ATG3. Moreover, in vivo studies revealed that the redox state of ATG3 from Chlamydomonas undergoes profound changes under autophagy-activating stress conditions, such as the absence of photoprotective carotenoids, the inhibition of fatty acid synthesis, or high light irradiance. Thus, our results indicate that the redox-mediated activation of ATG3 regulates ATG8 lipidation under oxidative stress conditions in this model microalga.
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Affiliation(s)
- Manuel J Mallén-Ponce
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Consejo Superior de Investigaciones Científicas (CSIC)- Universidad de Sevilla, Sevilla 41092, Spain
| | - María Esther Pérez-Pérez
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Consejo Superior de Investigaciones Científicas (CSIC)- Universidad de Sevilla, Sevilla 41092, Spain
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13
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Hoh D, Froehlich JE, Kramer DM. Redox regulation in chloroplast thylakoid lumen: The pmf changes everything, again. PLANT, CELL & ENVIRONMENT 2023. [PMID: 38111217 DOI: 10.1111/pce.14789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023]
Abstract
Photosynthesis is the foundation of life on Earth. However, if not well regulated, it can also generate excessive reactive oxygen species (ROS), which can cause photodamage. Regulation of photosynthesis is highly dynamic, responding to both environmental and metabolic cues, and occurs at many levels, from light capture to energy storage and metabolic processes. One general mechanism of regulation involves the reversible oxidation and reduction of protein thiol groups, which can affect the activity of enzymes and the stability of proteins. Such redox regulation has been well studied in stromal enzymes, but more recently, evidence has emerged of redox control of thylakoid lumenal enzymes. This review/hypothesis paper summarizes the latest research and discusses several open questions and challenges to achieving effective redox control in the lumen, focusing on the distinct environments and regulatory components of the thylakoid lumen, including the need to transport electrons across the thylakoid membrane, the effects of pH changes by the proton motive force (pmf) in the stromal and lumenal compartments, and the observed differences in redox states. These constraints suggest that activated oxygen species are likely to be major regulatory contributors to lumenal thiol redox regulation, with key components and processes yet to be discovered.
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Affiliation(s)
- Donghee Hoh
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
| | - John E Froehlich
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - David M Kramer
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
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14
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Launay H, Avilan L, Gérard C, Parsiegla G, Receveur-Brechot V, Gontero B, Carriere F. Location of the photosynthetic carbon metabolism in microcompartments and separated phases in microalgal cells. FEBS Lett 2023; 597:2853-2878. [PMID: 37827572 DOI: 10.1002/1873-3468.14754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/04/2023] [Accepted: 09/22/2023] [Indexed: 10/14/2023]
Abstract
Carbon acquisition, assimilation and storage in eukaryotic microalgae and cyanobacteria occur in multiple compartments that have been characterised by the location of the enzymes involved in these functions. These compartments can be delimited by bilayer membranes, such as the chloroplast, the lumen, the peroxisome, the mitochondria or monolayer membranes, such as lipid droplets or plastoglobules. They can also originate from liquid-liquid phase separation such as the pyrenoid. Multiple exchanges exist between the intracellular microcompartments, and these are reviewed for the CO2 concentration mechanism, the Calvin-Benson-Bassham cycle, the lipid metabolism and the cellular energetic balance. Progress in microscopy and spectroscopic methods opens new perspectives to characterise the molecular consequences of the location of the proteins involved, including intrinsically disordered proteins.
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Affiliation(s)
- Hélène Launay
- Aix Marseille Univ, CNRS, BIP, UMR7281, Marseille, France
| | - Luisana Avilan
- Aix Marseille Univ, CNRS, BIP, UMR7281, Marseille, France
| | - Cassy Gérard
- Aix Marseille Univ, CNRS, BIP, UMR7281, Marseille, France
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15
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Wang S, Dong Y, Gu L, Chen X, Zhang C, Long L, Wang J, Yang M. Identification and adaptive evolution analysis of glutaredoxin genes in Populus spp. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:1154-1170. [PMID: 37703550 DOI: 10.1111/plb.13580] [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: 05/16/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023]
Abstract
Glutaredoxin (GRX) is a class of small redox proteins widely involved in cellular redox homeostasis and the regulation of various cellular processes. The role of GRX gene in the differentiation of Populus spp. is rarely reported. We compared the similarities and differences of GRX genes among four sections of poplar using bioinformatics, corrected the annotations of some GRX genes, and focused on analysing their transcript profiling and adaptive evolution in Populus spp. A total of 219 GRX genes were identified in four sections of poplar, among which annotations for 13 genes were corrected. Differences in GRX genes were found between sect. Turanga, represented by P. euphratica, and other poplar sections. Most notably, P. euphratica had the smallest number of duplication events for GRX genes (n = 9) and no tandem duplications, whereas there were >25 duplication events for all other poplars. Furthermore, we detected 18 pairs of GRX genes under positive selection pressure in various sections of poplar, and identified two groups of GRX genes in the Salicaceae that potentially underwent positive selection. Expression profiling results showed that the PtrGRX34 and its orthologous genes were upregulated under stress treatments. In summary, the GRX gene family underwent expansion during poplar differentiation, and some genes underwent rapid evolution during this process, which may be beneficial for Populus spp. to adapt to environmental changes. This study may provide more insights into the molecular mechanisms of Populus spp. adaptation to environmental changes and the adaptive evolution of GRX genes.
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Affiliation(s)
- S Wang
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - Y Dong
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - L Gu
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - X Chen
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - C Zhang
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - L Long
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - J Wang
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
| | - M Yang
- Institute of Forest Biotechnology, College of Forestry, Hebei Agricultural University, Baoding, China
- Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, China
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16
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Bodnar Y, Gellert M, Hossain FM, Lillig CH. Breakdown of Arabidopsis thaliana thioredoxins and glutaredoxins based on electrostatic similarity-Leads to common and unique interaction partners and functions. PLoS One 2023; 18:e0291272. [PMID: 37695767 PMCID: PMC10495010 DOI: 10.1371/journal.pone.0291272] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/24/2023] [Indexed: 09/13/2023] Open
Abstract
The reversible reduction and oxidation of protein thiols was first described as mechanism to control light/dark-dependent metabolic regulation in photosynthetic organisms. Today, it is recognized as an essential mechanism of regulation and signal transduction in all kingdoms of life. Proteins of the thioredoxin (Trx) family, Trxs and glutaredoxins (Grxs) in particular, catalyze thiol-disulfide exchange reactions and are vital players in the operation of thiol switches. Various Trx and Grx isoforms are present in all compartments of the cell. These proteins have a rather broad but at the same time distinct substrate specificity. Understanding the molecular basis of their target specificity is central to the understanding of physiological and pathological redox signaling. Electrostatic complementarity of the redoxins with their target proteins has been proposed as a major reason. Here, we analyzed the electrostatic similarity of all Arabidopsis thaliana Trxs, Grxs, and proteins containing such domains. Clustering of the redoxins based on this comparison suggests overlapping and also distant target specificities and thus functions of the different sub-classes including all Trx isoforms as well as the three classes of Grxs, i.e. CxxC-, CGFS-, and CC-type Grxs. Our analysis also provides a rationale for the tuned substrate specificities of both the ferredoxin- and NADPH-dependent Trx reductases.
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Affiliation(s)
- Yana Bodnar
- Institute for Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
- Institute for Physics, University of Greifswald, Greifswald, Germany
| | - Manuela Gellert
- Institute for Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
| | - Faruq Mohammed Hossain
- Institute for Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
| | - Christopher Horst Lillig
- Institute for Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
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17
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Vogelsang L, Dietz KJ. Regeneration of cytosolic thiol peroxidases. PHYSIOLOGIA PLANTARUM 2023; 175:e14042. [PMID: 37882285 DOI: 10.1111/ppl.14042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/21/2023] [Accepted: 10/02/2023] [Indexed: 10/27/2023]
Abstract
Three soluble type two peroxiredoxins (PRXIIB, C, D) and two glutathione peroxidase-like enzymes (GPXL2, 8) reside in the cytosol of Arabidopsis thaliana cells and function both as thiol-dependent antioxidants and redox sensors. Their primary substrate is H2 O2 , but they also accept other peroxides with a distinct preference between PRXII and GPXL. Less known is their regeneration specificity in the light of the large set of thiol reductases, namely eight annotated thioredoxin h isoforms (TRXh1-5, 7-9), a few TRX-like proteins, including CxxS1 (formerly TRXh6) and several glutaredoxins (GRX) associated with the cytosol. This study addressed this open question by in vitro enzyme tests using recombinant protein. GPXL2 and 8 exclusively accepted electrons from the TRX system, namely TRXh1-5 and TDX, while PRXIIB/C/D were efficiently regenerated with GRXC1 and C2 but not the TRX-like protein Picot1. They showed significant but low activity (<3% of GRXC2) with TRXh1-5 and TDX. A similar reduction efficiency with TRX was seen in the insulin assay, only TDX was less active. Finally, the reduction of oxidized cytosolic malate dehydrogenase 1, as measured by regained activity, showed an extremely broad ability to accept electrons from different TRXs and GRXs. The results demonstrate redundancy and specificity in the redox regulatory network of the cytosol.
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Affiliation(s)
- Lara Vogelsang
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
- CeBiTec, Bielefeld University, Bielefeld, Germany
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
- CeBiTec, Bielefeld University, Bielefeld, Germany
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18
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Fan Y, Li M, Wu Y, Wang X, Wang P, Zhang L, Meng X, Meng F, Li Y. Characterization of thioredoxin gene TaTrxh9 associated with heading-time regulation in wheat. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107903. [PMID: 37499575 DOI: 10.1016/j.plaphy.2023.107903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Thioredoxins (Trxs) are thiol-disulfide oxidoreductase proteins that play important roles in a spectrum of processes linking redox regulation and signaling in plants. However, little is known about Trxs and their biological functions in wheat, one of the most important food crops worldwide. This study reports the identification and functional characterization of an h-type Trx gene, TaTrxh9, in wheat. Three homoeologs of TaTrxh9 were identified and the sequences in the coding region were highly consistent among the homoeologs. Protein characterization showed that a conserved Trx_family domain, as well as a typical active site with a dithiol signature (WCGPC), was included in TaTrxh9. Structural modeling demonstrated that TaTrxh9 could fold into a canonical thioredoxin structure consisting of five-stranded antiparallel beta sheets sandwiched between four alpha helices. The insulin disulfide reduction assay demonstrated that TaTrxh9 was catalytically active in vitro. TaTrxh9 overexpression in the Arabidopsis mutant trxh9 complemented the abnormal growth phenotypes of the mutant, suggesting is functionality in vivo. The transcription level of TaTrxh9 was higher in leaf tissues and it was differentially expressed during the development of wheat plants. Interestingly, barley stripe mosaic virus-mediated suppression of TaTrxh9 shortened the seedling-heading period of wheat. Furthermore, CRISPR-Cas9 mediated gene knockout confirmed that the TaTrxh9 mutation resulted in early heading of wheat. To our knowledge, this study is the first to report that Trxh is associated with heading-time regulation, which lays a foundation for further exploring the biological function of TaTrxh9 and provides new ideas for molecular breeding focusing on early heading in wheat.
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Affiliation(s)
- Yadong Fan
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Mengyuan Li
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China; College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yujie Wu
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaoteng Wang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Putong Wang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China
| | - Li Zhang
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaodan Meng
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Fanrong Meng
- State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China; College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Yongchun Li
- Henan Technology Innovation Center of Wheat, Henan Agricultural University, Zhengzhou, 450046, China; College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, China.
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19
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Tang M, Li R, Chen P. Exogenous glutathione can alleviate chromium toxicity in kenaf by activating antioxidant system and regulating DNA methylation. CHEMOSPHERE 2023:139305. [PMID: 37364644 DOI: 10.1016/j.chemosphere.2023.139305] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 06/28/2023]
Abstract
Glutathione (GSH) participates in plant response to heavy metals (HMs) stress, however, the epigenetic regulating mechanisms of GSH in HMs detoxification remains unclear. In this study, to reveal the potential epigenetic regulating mechanisms, kenaf seedlings were treated with/without GSH under chromium (Cr) stress. A comprehensive physiological, genome-wide DNA methylation and gene functional analysis were performed. Results showed that external GSH obviously recovered Cr-induced growth inhibition, significantly decreased H2O2, O2.- and MDA accumulation, increased the activities of antioxidant enzymes (SOD, CAT, GR and APX) in kenaf exposed to Cr. In addition, the expression level of the main DNA methyltransferase (MET1, CMT3 and DRM1) and demethylase (ROS1, DEM, DML2, DML3 and DDM1) genes were investigated by qRT-PCR. The result indicated that Cr stress decreased DNA methyltransferase genes expression while increased demethylase genes expression; however, apply exogenous GSH led to the recovery trend. These indicating exogenous GSH alleviation Cr stress on kenaf seedlings by increasing DNA methylation level. At the same time, the MethylRAD-seq genome-wide DNA methylation analysis showed the DNA methylation level was significantly increased after GSH treatment compared with Cr treatment alone. The differentially methylated genes (DMGs) were uniquely enriched in DNA repair, flavin adenine dinucleotide binding and oxidoreductase activity. Furthermore, a ROS homeostasis-associated DMG, HcTrx, was selected for further functional analysis. Results showed that the knock-down of HcTrx kenaf seedlings displayed yellow-green phenotype and impaired antioxidant enzyme activity; in contrast, the overexpression lines of HcTrx improved chlorophyll levels and enhanced Cr tolerance in Arabidopsis. Taken together, our results illustrate the novel role of GSH-mediated Cr detoxification in kenaf by modulating the DNA methylation, and thus further affect the activation of antioxidant defense systems. The present characterized Cr tolerant gene resource could be further used for kenaf Cr tolerant breeding via genetic improvement.
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Affiliation(s)
- Meiqiong Tang
- Guangxi Key Laboratory of Agro-environment and Agric-products Safety, Key Laboratory of Crop Genetics Breeding and Germplasm Innovation, College of Agriculture, Guangxi University, Nanning, 530004, China; Guangxi Botanical Garden of Medicinal Plants, Guangxi Key Laboratory Resources Protection and Genetic Improvement, Nanning, China.
| | - Ru Li
- College of Life Science & Technology, Guangxi University, Nanning, China.
| | - Peng Chen
- Guangxi Key Laboratory of Agro-environment and Agric-products Safety, Key Laboratory of Crop Genetics Breeding and Germplasm Innovation, College of Agriculture, Guangxi University, Nanning, 530004, China.
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20
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Jurado-Flores A, Gotor C, Romero LC. Proteome Dynamics of Persulfidation in Leaf Tissue under Light/Dark Conditions and Carbon Deprivation. Antioxidants (Basel) 2023; 12:antiox12040789. [PMID: 37107163 PMCID: PMC10135009 DOI: 10.3390/antiox12040789] [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: 02/20/2023] [Revised: 03/09/2023] [Accepted: 03/21/2023] [Indexed: 04/29/2023] Open
Abstract
Hydrogen sulfide (H2S) acts as a signaling molecule in plants, bacteria, and mammals, regulating various physiological and pathological processes. The molecular mechanism by which hydrogen sulfide exerts its action involves the posttranslational modification of cysteine residues to form a persulfidated thiol motif. This research aimed to study the regulation of protein persulfidation. We used a label-free quantitative approach to measure the protein persulfidation profile in leaves under different growth conditions such as light regimen and carbon deprivation. The proteomic analysis identified a total of 4599 differentially persulfidated proteins, of which 1115 were differentially persulfidated between light and dark conditions. The 544 proteins that were more persulfidated in the dark were analyzed, and showed significant enrichment in functions and pathways related to protein folding and processing in the endoplasmic reticulum. Under light conditions, the persulfidation profile changed, and the number of differentially persulfidated proteins increased up to 913, with the proteasome and ubiquitin-dependent and ubiquitin-independent catabolic processes being the most-affected biological processes. Under carbon starvation conditions, a cluster of 1405 proteins was affected by a reduction in their persulfidation, being involved in metabolic processes that provide primary metabolites to essential energy pathways and including enzymes involved in sulfur assimilation and sulfide production.
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Affiliation(s)
- Ana Jurado-Flores
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avenida Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Cecilia Gotor
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avenida Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Luis C Romero
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avenida Américo Vespucio, 49, 41092 Sevilla, Spain
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21
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Gao S, Wang Y, Zeng Z, Zhang M, Yi N, Liu B, Wang R, Long S, Gong J, Liu T, Xu Y. Integrated bioinformatic and physiological analyses reveal the pivotal role of hydrogen sulfide in enhancing low-temperature tolerance in alfalfa. PHYSIOLOGIA PLANTARUM 2023; 175:e13885. [PMID: 36852715 DOI: 10.1111/ppl.13885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 02/12/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Hydrogen sulfide (H2 S) is an important gaseous signal molecule that regulates plant growth and stress resistance. However, research on the H2 S synthase (HSase) genes is still limited in the model legume plant Medicago truncatula Gaertn. In the present study, a total of 40 HSase family members were first identified and analyzed in the M. truncatula genome, and these genes distributed across eight chromosomes and were clustered into five groups (I-V) based on their conserved gene structures and protein motifs. Expression analysis revealed that the MtHSase genes were expressed in all the tested abiotic stresses, albeit with expression level differences. This study also showed that H2 S improves low temperature tolerance of alfalfa seedlings by regulating the antioxidant defense system and enhancing photosynthetic capacity. Thus, the study provides new insights into how the H2 S signal regulates tolerance to low-temperature stress and provides the basis for further gene function and detection.
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Affiliation(s)
- Shuanghong Gao
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Yifan Wang
- College of Agronomy, Northwest A&F University, Yangling, People's Republic of China
| | - Zhen Zeng
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Menglei Zhang
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Na Yi
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Bowen Liu
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Ruijia Wang
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Si Long
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Jiongjiong Gong
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Tieyuan Liu
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
| | - Yuefei Xu
- College of Grassland Agriculture, Northwest A&F University, Yangling, People's Republic of China
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22
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Wu T, Liu K, Chen M, Jiang B, Gong Q, Zhong Y. Transcriptome and metabolome analyses of Shatian pomelo ( Citrus grandis var. Shatinyu Hort) leaves provide insights into the overexpression of the gibberellin-induced gene CcGASA4. FRONTIERS IN PLANT SCIENCE 2022; 13:1022961. [PMID: 36407630 PMCID: PMC9671072 DOI: 10.3389/fpls.2022.1022961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
The gibberellic acid (GA)-stimulated Arabidopsis (GASA) gene family is highly specific to plants and plays crucial roles in plant growth and development. CcGASA4 is a member of the GASA gene family in citrus plants; however, the current understanding of its function in citrus is limited. We used CcGASA4-overexpression transgenic citrus (OEGA) and control (CON) plants to study the role of CcGASA4 in Shatian pomelo. The RNA sequencing (RNA-seq) analysis showed that 3,522 genes, including 1,578 upregulated and 1,944 downregulated genes, were significantly differentially expressed in the CON versus OEGA groups. The Gene Ontology enrichment analysis showed that 178 of the differentially-expressed genes (DEGs) were associated with flowers. A Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that the DEGs were enriched in 134 pathways, including "plant-pathogen interaction", "MAPK signaling pathway-plant", "phenylpropane biosynthesis", "plant hormone signal transduction", "phenylalanine, tyrosine and tryptophan biosynthesis", and "flavonoid and flavonol biosynthesis". The most significantly-enriched pathway was "plant-pathogen interaction", in which 203 DEGs were enriched (126 DEGs were upregulated and 78 were downregulated). The metabolome analysis showed that 644 metabolites were detected in the OEGA and CON samples, including 294 differentially-accumulated metabolites (DAMs; 83 upregulated versus 211 downregulated in OEGA compared to CON). The metabolic pathway analysis showed that these DAMs were mainly involved in the metabolic pathways of secondary metabolites, such as phenylpropanoids, phenylalanine, flavone, and flavonol biosynthesis. Thirteen flavonoids and isoflavones were identified as DAMs in OEGA and CON. We also discovered 25 OEGA-specific accumulated metabolites and found 10 that were associated with disease resistance. CcGASA4 may therefore play a functional role in activating the expression of MAPK signaling transduction pathway and disease resistance genes, inhibiting the expression of auxin- and ethylene-related genes, and activating or inhibiting the expression of brassinosteroid biosynthesis- and abscisic acid-related genes. CcGASA4 may also play a role in regulating the composition and abundance of flavonoids, isoflavones, amino acids, purines, and phenolic compounds. This study provides new insights into the molecular mechanisms of action of CcGASA4 in citrus plants.
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Affiliation(s)
- Tianli Wu
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, China
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Kaidong Liu
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, China
| | - Min Chen
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Bo Jiang
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Qijing Gong
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, China
| | - Yun Zhong
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization (MOA), Guangzhou, China
- Key Laboratory of Tropical and Subtropical of Fruit Tree Research, Science and Technology Department of Guangdong Province, Guangzhou, China
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23
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Hazra A, Varshney V, Verma P, Kamble NU, Ghosh S, Achary RK, Gautam S, Majee M. Methionine sulfoxide reductase B5 plays a key role in preserving seed vigor and longevity in rice (Oryza sativa). THE NEW PHYTOLOGIST 2022; 236:1042-1060. [PMID: 35909309 DOI: 10.1111/nph.18412] [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: 04/27/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Oxidation of methionine leads to the formation of methionine S-sulfoxide and methionine R-sulfoxide, which can be reverted by two types of methionine sulfoxide reductase (MSR): MSRA and MSRB. Though the role of MSR enzymes has been elucidated in various physiological processes, the regulation and role of MSR in seeds remains poorly understood. In this study, through molecular, biochemical, and genetic studies using seed-specific overexpression and RNAi lines of OsMSRB5 in Oryza sativa, we demonstrate the role of OsMSRB5 in maintaining seed vigor and longevity. We show that an age-induced reduction in the vigor and viability of seeds is correlated with reduced MSR activity and increased methionine sulfoxide (MetSO) formation. OsMSRB5 expression increases during seed maturation and is predominantly localized to the embryo. Further analyses on transgenic lines reveal the role of OsMSRB5 in modulating reactive oxygen species (ROS) homeostasis to preserve seed vigor and longevity. We show that ascorbate peroxidase and PROTEIN l-ISOASPARTYL METHYLTRANSFERASE undergo MetSO modification in seeds that affects their functional competence. OsMSRB5 physically interacts with these proteins and reverts this modification to facilitate their functions and preserve seed vigor and longevity. Our results thus illustrate the role of OsMSRB5 in preserving seed vigor and longevity by modulating ROS homeostasis in seeds.
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Affiliation(s)
- Abhijit Hazra
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Vishal Varshney
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Pooja Verma
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Nitin Uttam Kamble
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Shraboni Ghosh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Rakesh Kumar Achary
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Shikha Gautam
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Manoj Majee
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
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24
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Sahu PK, Jayalakshmi K, Tilgam J, Gupta A, Nagaraju Y, Kumar A, Hamid S, Singh HV, Minkina T, Rajput VD, Rajawat MVS. ROS generated from biotic stress: Effects on plants and alleviation by endophytic microbes. FRONTIERS IN PLANT SCIENCE 2022; 13:1042936. [PMID: 36352882 PMCID: PMC9638130 DOI: 10.3389/fpls.2022.1042936] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/03/2022] [Indexed: 05/26/2023]
Abstract
Aerobic living is thought to generate reactive oxygen species (ROS), which are an inevitable chemical component. They are produced exclusively in cellular compartments in aerobic metabolism involving significant energy transfer and are regarded as by-products. ROS have a significant role in plant response to pathogenic stress, but the pattern varies between necrotrophs and biotrophs. A fine-tuned systemic induction system is involved in ROS-mediated disease development in plants. In regulated concentrations, ROS act as a signaling molecule and activate different pathways to suppress the pathogens. However, an excess of these ROS is deleterious to the plant system. Along with altering cell structure, ROS cause a variety of physiological reactions in plants that lower plant yield. ROS also degrade proteins, enzymes, nucleic acids, and other substances. Plants have their own mechanisms to overcome excess ROS and maintain homeostasis. Microbes, especially endophytes, have been reported to maintain ROS homeostasis in both biotic and abiotic stresses by multiple mechanisms. Endophytes themselves produce antioxidant compounds and also induce host plant machinery to supplement ROS scavenging. The structured reviews on how endophytes play a role in ROS homeostasis under biotic stress were very meager, so an attempt was made to compile the recent developments in ROS homeostasis using endophytes. This review deals with ROS production, mechanisms involved in ROS signaling, host plant mechanisms in alleviating oxidative stress, and the roles of endophytes in maintaining ROS homeostasis under biotic stress.
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Affiliation(s)
- Pramod Kumar Sahu
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
| | - K. Jayalakshmi
- Plant Pathology, Indian Council of Agricultural Research (ICAR)-Directorate of Onion Garlic Research, Maharashtra, India
| | - Jyotsana Tilgam
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
| | - Amrita Gupta
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow, India
| | - Yalavarthi Nagaraju
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
| | - Adarsh Kumar
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
| | | | - Harsh Vardhan Singh
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Vishnu D. Rajput
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Mahendra Vikram Singh Rajawat
- Indian Council of Agricultural Research (ICAR)-National Bureau of Agriculturally Important Microorganisms, Uttar Pradesh, India
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25
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Domínguez-Martín MA, López-Lozano A, Melero-Rubio Y, Gómez-Baena G, Jiménez-Estrada JA, Kukil K, Diez J, García-Fernández JM. Marine Synechococcus sp. Strain WH7803 Shows Specific Adaptative Responses to Assimilate Nanomolar Concentrations of Nitrate. Microbiol Spectr 2022; 10:e0018722. [PMID: 35852322 PMCID: PMC9430850 DOI: 10.1128/spectrum.00187-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/24/2022] [Indexed: 11/20/2022] Open
Abstract
Marine Synechococcus, together with Prochlorococcus, contribute to a significant proportion of the primary production on Earth. The spatial distribution of these two groups of marine picocyanobacteria depends on different factors such as nutrient availability and temperature. Some Synechococcus ecotypes thrive in mesotrophic and moderately oligotrophic waters, where they exploit both oxidized and reduced forms of nitrogen. Here, we present a comprehensive study, which includes transcriptomic and proteomic analyses of the response of Synechococcus sp. strain WH7803 to nanomolar concentrations of nitrate, compared to micromolar ammonium or nitrogen starvation. We found that Synechococcus has a specific response to a nanomolar nitrate concentration that differs from the response shown under nitrogen starvation or the presence of standard concentrations of either ammonium or nitrate. This fact suggests that the particular response to the uptake of nanomolar concentrations of nitrate could be an evolutionary advantage for marine Synechococcus against Prochlorococcus in the natural environment. IMPORTANCE Marine Synechococcus are a very abundant group of photosynthetic organisms on our planet. Previous studies have shown blooms of these organisms when nanomolar concentrations of nitrate become available. We have assessed the effect of nanomolar nitrate concentrations by studying the transcriptome and proteome of Synechococcus sp. WH7803, together with some physiological parameters. We found evidence that Synechococcus sp. strain WH7803 does sense and react to nanomolar concentrations of nitrate, suggesting the occurrence of specific adaptive mechanisms to allow their utilization. Thus, very low concentrations of nitrate in the ocean seem to be a significant nitrogen source for marine picocyanobacteria.
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Grants
- Ministerio de Ciencia e Innovacion, Government of Spain (cofunded by the FEDER program, European Union)
- Consejeria de Conocimiento, Investigacion y Universidad, Junta de Andalucia (Spain), cofunded by the FEDER program (European Union)
- Universidad de Cordoba (Spain), Programa Propio de Investigacion
- Junta de Andalucia (Spain), Programa Operativo de Empleo Juvenil, cofunded by the FEDER programme (European Union)
- Consejería de Transformación Económica, Industria, Conocimiento y Universidades, Junta de Andalucia (Spain), cofunded by the FEDER program (European Union)
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Affiliation(s)
- María Agustina Domínguez-Martín
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Antonio López-Lozano
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Yesica Melero-Rubio
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Guadalupe Gómez-Baena
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Juan Andrés Jiménez-Estrada
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Kateryna Kukil
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Jesús Diez
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - José Manuel García-Fernández
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Córdoba, Spain
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26
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Fukui K, Yoshida K, Yokochi Y, Sekiguchi T, Wakabayashi KI, Hisabori T, Mihara S. The Importance of the C-Terminal Cys Pair of Phosphoribulokinase in Phototrophs in Thioredoxin-Dependent Regulation. PLANT & CELL PHYSIOLOGY 2022; 63:855-868. [PMID: 35413120 PMCID: PMC9199185 DOI: 10.1093/pcp/pcac050] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 06/12/2023]
Abstract
Phosphoribulokinase (PRK), one of the enzymes in the Calvin-Benson cycle, is a well-known target of thioredoxin (Trx), which regulates various enzyme activities by the reduction of disulfide bonds in a light-dependent manner. PRK has two Cys pairs conserved in the N-terminal and C-terminal regions, and the N-terminal one near the active site is thought to be responsible for the regulation. The flexible clamp loop located between the N-terminal two Cys residues has been deemed significant to Trx-mediated regulation. However, cyanobacterial PRK is also subject to Trx-dependent activation despite the lack of this clamp loop. We, therefore, compared Trx-mediated regulation of PRK from the cyanobacterium Anabaena sp. PCC 7120 (A.7120_PRK) and that from the land plant Arabidopsis thaliana (AtPRK). Interestingly, peptide mapping and site-directed mutagenesis analysis showed that Trx was more effective in changing the redox states of the C-terminal Cys pair in both A.7120_PRK and AtPRK. In addition, the effect of redox state change of the C-terminal Cys pair on PRK activity was different between A.7120_PRK and AtPRK. Trx-mediated redox regulation of the C-terminal Cys pair was also important for complex dissociation/formation with CP12 and glyceraldehyde 3-phosphate dehydrogenase. Furthermore, in vivo analysis of the redox states of PRK showed that only one disulfide bond is reduced in response to light. Based on the enzyme activity assay and the complex formation analysis, we concluded that Trx-mediated regulation of the C-terminal Cys pair of PRK is important for activity regulation in cyanobacteria and complex dissociation/formation in both organisms.
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Affiliation(s)
- Kazuha Fukui
- School of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
| | - Keisuke Yoshida
- School of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
| | - Yuichi Yokochi
- School of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
| | - Takatoshi Sekiguchi
- School of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
| | - Ken-ichi Wakabayashi
- School of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
| | | | - Shoko Mihara
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan
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27
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Systematic monitoring of 2-Cys peroxiredoxin-derived redox signals unveiled its role in attenuating carbon assimilation rate. Proc Natl Acad Sci U S A 2022; 119:e2119719119. [PMID: 35648819 DOI: 10.1073/pnas.2119719119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
SignificanceIdentifying the intrinsic factors that regulate leaf photosynthetic rate may pave the way toward developing new strategies to enhance carbon assimilation. While the dependence of photosynthesis on the reductive activation of the Calvin-Benson cycle enzymes is well established, the role of oxidative signals in counterbalancing the reductive activity is just beginning to be explored. By developing 2-Cys peroxiredoxin-based genetically encoded biosensors, we demonstrated the induction of photosynthetically derived oxidative signals under habitual light conditions, a phenomenon typically masked by the dominance of the reductive power. Moreover, we unraveled the simultaneous activation of reductive and oxidative signals during photosynthesis induction phase and showed that 2-Cys peroxiredoxin activity attenuates carbon assimilation rates, demonstrating the restrictions imposed on photosynthetic performance by oxidative signals.
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28
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Zam Is a Redox-Regulated Member of the RNB-Family Required for Optimal Photosynthesis in Cyanobacteria. Microorganisms 2022; 10:microorganisms10051055. [PMID: 35630497 PMCID: PMC9145284 DOI: 10.3390/microorganisms10051055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/14/2022] [Accepted: 05/16/2022] [Indexed: 01/27/2023] Open
Abstract
The zam gene mediating resistance to acetazolamide in cyanobacteria was discovered thirty years ago during a drug tolerance screen. We use phylogenetics to show that Zam proteins are distributed across cyanobacteria and that they form their own unique clade of the ribonuclease II/R (RNB) family. Despite being RNB family members, multiple sequence alignments reveal that Zam proteins lack conservation and exhibit extreme degeneracy in the canonical active site—raising questions about their cellular function(s). Several known phenotypes arise from the deletion of zam, including drug resistance, slower growth, and altered pigmentation. Using room-temperature and low-temperature fluorescence and absorption spectroscopy, we show that deletion of zam results in decreased phycocyanin synthesis rates, altered PSI:PSII ratios, and an increase in coupling between the phycobilisome and PSII. Conserved cysteines within Zam are identified and assayed for function using in vitro and in vivo methods. We show that these cysteines are essential for Zam function, with mutation of either residue to serine causing phenotypes identical to the deletion of Zam. Redox regulation of Zam activity based on the reversible oxidation-reduction of a disulfide bond involving these cysteine residues could provide a mechanism to integrate the ‘central dogma’ with photosynthesis in cyanobacteria.
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29
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Balotf S, Wilson CR, Tegg RS, Nichols DS, Wilson R. Large-Scale Protein and Phosphoprotein Profiling to Explore Potato Resistance Mechanisms to Spongospora subterranea Infection. FRONTIERS IN PLANT SCIENCE 2022; 13:872901. [PMID: 35498715 PMCID: PMC9047998 DOI: 10.3389/fpls.2022.872901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Potato is one of the most important food crops for human consumption. The soilborne pathogen Spongospora subterranea infects potato roots and tubers, resulting in considerable economic losses from diminished tuber yields and quality. A comprehensive understanding of how potato plants respond to S. subterranea infection is essential for the development of pathogen-resistant crops. Here, we employed label-free proteomics and phosphoproteomics to quantify systemically expressed protein-level responses to S. subterranea root infection in potato foliage of the susceptible and resistant potato cultivars. A total of 2,669 proteins and 1,498 phosphoproteins were quantified in the leaf samples of the different treatment groups. Following statistical analysis of the proteomic data, we identified oxidoreductase activity, electron transfer, and photosynthesis as significant processes that differentially changed upon root infection specifically in the resistant cultivar and not in the susceptible cultivar. The phosphoproteomics results indicated increased activity of signal transduction and defense response functions in the resistant cultivar. In contrast, the majority of increased phosphoproteins in the susceptible cultivar were related to transporter activity and sub-cellular localization. This study provides new insight into the molecular mechanisms and systemic signals involved in potato resistance to S. subterranea infection and has identified new roles for protein phosphorylation in the regulation of potato immune response.
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Affiliation(s)
- Sadegh Balotf
- New Town Research Laboratories, Tasmanian Institute of Agriculture, University of Tasmania, New Town, TAS, Australia
| | - Calum R. Wilson
- New Town Research Laboratories, Tasmanian Institute of Agriculture, University of Tasmania, New Town, TAS, Australia
| | - Robert S. Tegg
- New Town Research Laboratories, Tasmanian Institute of Agriculture, University of Tasmania, New Town, TAS, Australia
| | - David S. Nichols
- Central Science Laboratory, University of Tasmania, Hobart, TAS, Australia
| | - Richard Wilson
- Central Science Laboratory, University of Tasmania, Hobart, TAS, Australia
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30
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Crack JC, Balasiny BK, Bennett SP, Rolfe MD, Froes A, MacMillan F, Green J, Cole JA, Le Brun NE. The Di-Iron Protein YtfE Is a Nitric Oxide-Generating Nitrite Reductase Involved in the Management of Nitrosative Stress. J Am Chem Soc 2022; 144:7129-7145. [PMID: 35416044 PMCID: PMC9052748 DOI: 10.1021/jacs.1c12407] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
Previously characterized
nitrite reductases fall into three classes:
siroheme-containing enzymes (NirBD), cytochrome c hemoproteins (NrfA and NirS), and copper-containing enzymes (NirK).
We show here that the di-iron protein YtfE represents a physiologically
relevant new class of nitrite reductases. Several functions have been
previously proposed for YtfE, including donating iron for the repair
of iron–sulfur clusters that have been damaged by nitrosative
stress, releasing nitric oxide (NO) from nitrosylated iron, and reducing
NO to nitrous oxide (N2O). Here, in vivo reporter assays confirmed that Escherichia coli YtfE increased cytoplasmic NO production from nitrite. Spectroscopic
and mass spectrometric investigations revealed that the di-iron site
of YtfE exists in a mixture of forms, including nitrosylated and nitrite-bound,
when isolated from nitrite-supplemented, but not nitrate-supplemented,
cultures. Addition of nitrite to di-ferrous YtfE resulted in nitrosylated
YtfE and the release of NO. Kinetics of nitrite reduction were dependent
on the nature of the reductant; the lowest Km, measured for the di-ferrous form, was ∼90 μM,
well within the intracellular nitrite concentration range. The vicinal
di-cysteine motif, located in the N-terminal domain of YtfE, was shown
to function in the delivery of electrons to the di-iron center. Notably,
YtfE exhibited very low NO reductase activity and was only able to
act as an iron donor for reconstitution of apo-ferredoxin under conditions
that damaged its di-iron center. Thus, YtfE is a high-affinity, low-capacity
nitrite reductase that we propose functions to relieve nitrosative
stress by acting in combination with the co-regulated NO-consuming
enzymes Hmp and Hcp.
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Affiliation(s)
- Jason C Crack
- Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Basema K Balasiny
- Institute of Microbiology and Infection and School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Sophie P Bennett
- Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Matthew D Rolfe
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Afonso Froes
- Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Fraser MacMillan
- Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Jeffrey Green
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Jeffrey A Cole
- Institute of Microbiology and Infection and School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Nick E Le Brun
- Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
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31
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Fuchs P, Bohle F, Lichtenauer S, Ugalde JM, Feitosa Araujo E, Mansuroglu B, Ruberti C, Wagner S, Müller-Schüssele SJ, Meyer AJ, Schwarzländer M. Reductive stress triggers ANAC017-mediated retrograde signaling to safeguard the endoplasmic reticulum by boosting mitochondrial respiratory capacity. THE PLANT CELL 2022; 34:1375-1395. [PMID: 35078237 PMCID: PMC9125394 DOI: 10.1093/plcell/koac017] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 12/18/2021] [Indexed: 05/16/2023]
Abstract
Redox processes are at the heart of universal life processes, such as metabolism, signaling, or folding of secreted proteins. Redox landscapes differ between cell compartments and are strictly controlled to tolerate changing conditions and to avoid cell dysfunction. While a sophisticated antioxidant network counteracts oxidative stress, our understanding of reductive stress responses remains fragmentary. Here, we observed root growth impairment in Arabidopsis thaliana mutants of mitochondrial alternative oxidase 1a (aox1a) in response to the model thiol reductant dithiothreitol (DTT). Mutants of mitochondrial uncoupling protein 1 (ucp1) displayed a similar phenotype indicating that impaired respiratory flexibility led to hypersensitivity. Endoplasmic reticulum (ER) stress was enhanced in the mitochondrial mutants and limiting ER oxidoreductin capacity in the aox1a background led to synergistic root growth impairment by DTT, indicating that mitochondrial respiration alleviates reductive ER stress. The observations that DTT triggered nicotinamide adenine dinucleotide (NAD) reduction in vivo and that the presence of thiols led to electron transport chain activity in isolated mitochondria offer a biochemical framework of mitochondrion-mediated alleviation of thiol-mediated reductive stress. Ablation of transcription factor Arabidopsis NAC domain-containing protein17 (ANAC017) impaired the induction of AOX1a expression by DTT and led to DTT hypersensitivity, revealing that reductive stress tolerance is achieved by adjusting mitochondrial respiratory capacity via retrograde signaling. Our data reveal an unexpected role for mitochondrial respiratory flexibility and retrograde signaling in reductive stress tolerance involving inter-organelle redox crosstalk.
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Affiliation(s)
| | | | | | | | - Elias Feitosa Araujo
- Institute of Plant Biology and Biotechnology (IBBP), Westfälische Wilhelms-Universität Münster, D-48143 Münster, Germany
| | | | | | | | | | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), Rheinische Friedrich-Wilhelms-Universität Bonn, D-53113 Bonn, Germany
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Kalemba EM, Valot B, Job D, Bailly C, Meimoun P. Are Methionine Sulfoxide-Containing Proteins Related to Seed Longevity? A Case Study of Arabidopsisthaliana Dry Mature Seeds Using Cyanogen Bromide Attack and Two-Dimensional-Diagonal Electrophoresis. PLANTS (BASEL, SWITZERLAND) 2022; 11:569. [PMID: 35214905 PMCID: PMC8875303 DOI: 10.3390/plants11040569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/17/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
In recent years, several reports pointed out the role of protein oxidation in seed longevity, notably regarding the oxidation of methionine (Met) residues to methionine sulfoxide (MetO) in proteins. To further consider this question, we present a handy proteomic method based on the use of two-dimensional diagonal electrophoresis (2Dd) and cyanogen bromide (CNBr) cleavage, which we refer to as 2Dd-CNBr. CNBr treatment of proteins causes the non-enzymatic hydrolysis of peptide bonds on the carboxyl side of reduced Met residues. However, Met oxidation causes a lack of cleavage, thus modifying the electrophoretic mobility of CNBr-induced peptides. This approach was first validated using bovine serum albumin as a model protein, which confirmed the possibility of distinguishing between oxidized and non-oxidized forms of Met-containing peptides in gels. Then, the 2Dd-CNBr method was applied to the Arabidopsis thaliana seed protein extract in a control (non-oxidized) condition and in an oxidized one (as obtained following hypochlorous acid treatment). Twenty-four oxidized Met residues in 19 proteins identified by mass spectrometry were found to be surface exposed in these proteins. In the three-dimensional environment of the oxidized Met, we detected amino acid residues that could be converted by oxidation (carbonylation) or by phosphorylation, suggesting a possible interplay between Met oxidation and the other protein modifications. The identification of the proteins oxidatively modified in Met residues revealed the finding that MetO-containing proteins are related to seed longevity. Based on these results, we suggest that the method presently described also has the potential for wider applications.
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Affiliation(s)
- Ewa Marzena Kalemba
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland;
- UMR 7622 Biologie du Développement, IBPS, Sorbonne Université, CNRS, F-75005 Paris, France;
| | - Benoît Valot
- PAPPSO, INRA, CNRS, AgroParisTech, Université Paris-Saclay, GQE-Le Moulon, 91190 Gif-sur-Yvette, France;
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 25000 Besançon, France
| | - Dominique Job
- UMR5240, CNRS, Université Claude Bernarnard Lyon 1, INSA, Bayer CropScience, 69622 Lyon, France;
| | - Christophe Bailly
- UMR 7622 Biologie du Développement, IBPS, Sorbonne Université, CNRS, F-75005 Paris, France;
| | - Patrice Meimoun
- UMR 7622 Biologie du Développement, IBPS, Sorbonne Université, CNRS, F-75005 Paris, France;
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(De)Activation (Ir)Reversibly or Degradation: Dynamics of Post-Translational Protein Modifications in Plants. Life (Basel) 2022; 12:life12020324. [PMID: 35207610 PMCID: PMC8874572 DOI: 10.3390/life12020324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 11/22/2022] Open
Abstract
The increasing dynamic functions of post-translational modifications (PTMs) within protein molecules present outstanding challenges for plant biology even at this present day. Protein PTMs are among the first and fastest plant responses to changes in the environment, indicating that the mechanisms and dynamics of PTMs are an essential area of plant biology. Besides being key players in signaling, PTMs play vital roles in gene expression, gene, and protein localization, protein stability and interactions, as well as enzyme kinetics. In this review, we take a broader but concise approach to capture the current state of events in the field of plant PTMs. We discuss protein modifications including citrullination, glycosylation, phosphorylation, oxidation and disulfide bridges, N-terminal, SUMOylation, and ubiquitination. Further, we outline the complexity of studying PTMs in relation to compartmentalization and function. We conclude by challenging the proteomics community to engage in holistic approaches towards identification and characterizing multiple PTMs on the same protein, their interaction, and mechanism of regulation to bring a deeper understanding of protein function and regulation in plants.
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Wi SD, Lee ES, Park JH, Chae HB, Paeng SK, Bae SB, Phan TKA, Kim WY, Yun DJ, Lee SY. Redox-mediated structural and functional switching of C-repeat binding factors enhances plant cold tolerance. THE NEW PHYTOLOGIST 2022; 233:1067-1073. [PMID: 34537981 DOI: 10.1111/nph.17745] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
C-repeat binding factors (CBFs) are key cold-responsive transcription factors that play pleiotropic roles in the cold acclimation, growth, and development of plants. Cold-sensitive cbf knockout mutants and cold-tolerant CBF overexpression lines exhibit abnormal phenotypes at warm temperatures, suggesting that CBF activity is precisely regulated, and a critical threshold level must be maintained for proper plant growth under normal conditions. Cold-inducible CBFs also exist in warm-climate plants but as inactive disulfide-bonded oligomers. However, upon translocation to the nucleus under a cold snap, the h2-isotype of cytosolic thioredoxin (Trx-h2), reduces the oxidized (inactive) CBF oligomers and the newly synthesized CBF monomers, thus producing reduced (active) CBF monomers. Thus, the redox-dependent structural switching and functional activation of CBFs protect plants under cold stress.
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Affiliation(s)
- Seong Dong Wi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Eun Seon Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Su Bin Bae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Thi Kieu Anh Phan
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul, 05029, Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
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Kadoll SK, Zhou Z, Dhindsa R, Lemaux P, Buchanan BB, Singh J. Interplay of starch debranching enzyme and its inhibitor is mediated by Redox-Activated SPL transcription factor. Comput Struct Biotechnol J 2022; 20:5342-5349. [PMID: 36212539 PMCID: PMC9522876 DOI: 10.1016/j.csbj.2022.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/30/2022] Open
Abstract
We have first time described that pullulanase inhibitor is under control of SPL transcriptional factor in barley. SPL3 mediated transcriptional regulation of pullulanase inhibitor is redox-dependent. Antagonistic relationship between pullulanase and its inhibitors is epigenetically guided via miR156 targeted SPL3.
The germination process is of central importance across the cultivated species involving several key enzymes for mobilization of stored food reserves. Pullulanase (PUL), a starch-debranching enzyme, plays an important role in mobilizing stored endosperm food reserves during germination. Pullulanase inhibitor (PULI) hinders PUL’s activity through an unknown mechanism. Barley has one PUL and two PULI genes. During the time-dependent processes of seed germination, only PULI-1 expression shows an antagonistic relationship with that of PUL. Our data have indicated that the expression of PULI-1 is modulated by SPL (Squamosa-promoter-binding Protein Like) transcription factors, known to be targeted by miR156. We show that the binding of recombinant HvSPL3 protein to the PULI-1 promoter occurs under reducing, but not under oxidizing conditions. Replacement of Cys residues with threonine in HvSPL3 abolishes the binding, indicating an essential role of the redox state in the expression of PULI. Our findings may have important implications for the industrial use of starch.
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Affiliation(s)
- Sukhjiwan K. Kadoll
- Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec H9X 3V9, Canada
| | - Zhou Zhou
- Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec H9X 3V9, Canada
| | - Rajinder Dhindsa
- Department of Biology, McGill University, Montreal, Quebec H3A 1B1, Canada
| | - Peggy Lemaux
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | - Bob B. Buchanan
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | - Jaswinder Singh
- Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec H9X 3V9, Canada
- Corresponding author.
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Doron S, Lampl N, Savidor A, Katina C, Gabashvili A, Levin Y, Rosenwasser S. SPEAR: A proteomics approach for simultaneous protein expression and redox analysis. Free Radic Biol Med 2021; 176:366-377. [PMID: 34619326 DOI: 10.1016/j.freeradbiomed.2021.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 01/02/2023]
Abstract
Oxidation and reduction of protein cysteinyl thiols serve as molecular switches, which is considered the most central mechanism for redox regulation of biological processes, altering protein structure, biochemical activity, subcellular localization, and binding affinity. Redox proteomics allows global identification of redox-modified cysteine (Cys) sites and quantification of their reversible oxidation/reduction responses, serving as a hypothesis-generating platform to stimulate redox biology mechanistic research. Here, we developed Simultaneous Protein Expression and Redox (SPEAR) analysis, a new redox-proteomics approach based on differential labeling of reversibly oxidized and reduced cysteines with light and heavy isotopic forms of commercially available isotopically-labeled N-ethylmaleimide (NEM). The presented method does not require enrichment for labeled peptides, thus enabling simultaneous quantification of Cys reversible oxidation state and protein abundance. Using SPEAR, we were able to quantify the in-vivo reversible oxidation state of thousands of cysteines across the Arabidopsis proteome under steady-state and oxidative stress conditions. Functional assignment of the identified redox-sensitive proteins demonstrated the widespread effect of oxidative conditions on various cellular functions and highlighted the enrichment of chloroplastic proteins. SPEAR provides a simple, straightforward, and cost-effective means of studying redox proteome dynamics. The presented data provide a global quantitative view of the reversible oxidation of well-known redox-regulated active sites and many novel redox-sensitive sites whose role in plant acclimation to stress conditions remains to be further explored.
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Affiliation(s)
- Shani Doron
- 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
| | - Alon Savidor
- de Botton Institute for Protein Profiling, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot, Israel
| | - Corine Katina
- de Botton Institute for Protein Profiling, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot, Israel
| | - Alexandra Gabashvili
- de Botton Institute for Protein Profiling, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot, Israel
| | - Yishai Levin
- de Botton Institute for Protein Profiling, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot, 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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Current Knowledge on Mechanisms Preventing Photosynthesis Redox Imbalance in Plants. Antioxidants (Basel) 2021; 10:antiox10111789. [PMID: 34829660 PMCID: PMC8614926 DOI: 10.3390/antiox10111789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 10/28/2021] [Accepted: 11/05/2021] [Indexed: 12/03/2022] Open
Abstract
Photosynthesis includes a set of redox reactions that are the source of reducing power and energy for the assimilation of inorganic carbon, nitrogen and sulphur, thus generating organic compounds, and oxygen, which supports life on Earth. As sessile organisms, plants have to face continuous changes in environmental conditions and need to adjust the photosynthetic electron transport to prevent the accumulation of damaging oxygen by-products. The balance between photosynthetic cyclic and linear electron flows allows for the maintenance of a proper NADPH/ATP ratio that is adapted to the plant’s needs. In addition, different mechanisms to dissipate excess energy operate in plants to protect and optimise photosynthesis under adverse conditions. Recent reports show an important role of redox-based dithiol–disulphide interchanges, mediated both by classical and atypical chloroplast thioredoxins (TRXs), in the control of these photoprotective mechanisms. Moreover, membrane-anchored TRX-like proteins, such as HCF164, which transfer electrons from stromal TRXs to the thylakoid lumen, play a key role in the regulation of lumenal targets depending on the stromal redox poise. Interestingly, not all photoprotective players were reported to be under the control of TRXs. In this review, we discuss recent findings regarding the mechanisms that allow an appropriate electron flux to avoid the detrimental consequences of photosynthesis redox imbalances.
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Li J, Wang K, Ji M, Zhang T, Yang C, Liu H, Chen S, Li H, Li H. Cys-SH based quantitative redox proteomics of salt induced response in sugar beet monosomic addition line M14. BOTANICAL STUDIES 2021; 62:16. [PMID: 34661775 PMCID: PMC8523603 DOI: 10.1186/s40529-021-00320-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 09/04/2021] [Indexed: 06/01/2023]
Abstract
BACKGROUND Salt stress is a major abiotic stress that limits plant growth, development and productivity. Studying the molecular mechanisms of salt stress tolerance may help to enhance crop productivity. Sugar beet monosomic addition line M14 exhibits tolerance to salt stress. RESULTS In this work, the changes in the BvM14 proteome and redox proteome induced by salt stress were analyzed using a multiplex iodoTMTRAQ double labeling quantitative proteomics approach. A total of 80 proteins were differentially expressed under salt stress. Interestingly, A total of 48 redoxed peptides were identified for 42 potential redox-regulated proteins showed differential redox change under salt stress. A large proportion of the redox proteins were involved in photosynthesis, ROS homeostasis and other pathways. For example, ribulose bisphosphate carboxylase/oxygenase activase changed in its redox state after salt treatments. In addition, three redox proteins involved in regulation of ROS homeostasis were also changed in redox states. Transcription levels of eighteen differential proteins and redox proteins were profiled. (The proteomics data generated in this study have been submitted to the ProteomeXchange and can be accessed via username: reviewer_pxd027550@ebi.ac.uk, password: q9YNM1Pe and proteomeXchange# PXD027550.) CONCLUSIONS: The results showed involvement of protein redox modifications in BvM14 salt stress response and revealed the short-term salt responsive mechanisms. The knowledge may inform marker-based breeding effort of sugar beet and other crops for stress resilience and high yield.
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Affiliation(s)
- Jinna Li
- Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Kun Wang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin, 150080, China
| | - Meichao Ji
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Tingyue Zhang
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Chao Yang
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - He Liu
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Sixue Chen
- Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, 32610, USA
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, 32610, USA
| | - Hongli Li
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China.
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin, 150080, China.
| | - Haiying Li
- Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China.
- Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin, 150080, China.
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin, 150080, China.
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Née G, Châtel-Innocenti G, Meimoun P, Leymarie J, Montrichard F, Satour P, Bailly C, Issakidis-Bourguet E. A New Role for Plastid Thioredoxins in Seed Physiology in Relation to Hormone Regulation. Int J Mol Sci 2021; 22:ijms221910395. [PMID: 34638735 PMCID: PMC8508614 DOI: 10.3390/ijms221910395] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/19/2021] [Accepted: 09/22/2021] [Indexed: 01/16/2023] Open
Abstract
In Arabidopsis seeds, ROS have been shown to be enabling actors of cellular signaling pathways promoting germination, but their accumulation under stress conditions or during aging leads to a decrease in the ability to germinate. Previous biochemical work revealed that a specific class of plastid thioredoxins (Trxs), the y-type Trxs, can fulfill antioxidant functions. Among the ten plastidial Trx isoforms identified in Arabidopsis, Trx y1 mRNA is the most abundant in dry seeds. We hypothesized that Trx y1 and Trx y2 would play an important role in seed physiology as antioxidants. Using reverse genetics, we found important changes in the corresponding Arabidopsis mutant seeds. They display remarkable traits such as increased longevity and higher and faster germination in conditions of reduced water availability or oxidative stress. These phenotypes suggest that Trxs y do not play an antioxidant role in seeds, as further evidenced by no changes in global ROS contents and protein redox status found in the corresponding mutant seeds. Instead, we provide evidence that marker genes of ABA and GAs pathways are perturbed in mutant seeds, together with their sensitivity to specific hormone inhibitors. Altogether, our results suggest that Trxs y function in Arabidopsis seeds is not linked to their previously identified antioxidant roles and reveal a new role for plastid Trxs linked to hormone regulation.
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Affiliation(s)
- Guillaume Née
- CNRS, INRAE, Institute of Plant Sciences Paris-Saclay (IPS2), Université Evry, Université Paris-Saclay, F-91405 Orsay, France
| | - Gilles Châtel-Innocenti
- CNRS, INRAE, Institute of Plant Sciences Paris-Saclay (IPS2), Université Evry, Université Paris-Saclay, F-91405 Orsay, France
| | - Patrice Meimoun
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, F-75005 Paris, France
| | - Juliette Leymarie
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, F-75005 Paris, France
| | - Françoise Montrichard
- IRHS-UMR1345, INRAE, Institut Agro, SFR 4207 QuaSaV, Université d'Angers, F-49071 Beaucouzé, France
| | - Pascale Satour
- IRHS-UMR1345, INRAE, Institut Agro, SFR 4207 QuaSaV, Université d'Angers, F-49071 Beaucouzé, France
| | - Christophe Bailly
- CNRS, Laboratoire de Biologie du Développement, Sorbonne Université, F-75005 Paris, France
| | - Emmanuelle Issakidis-Bourguet
- CNRS, INRAE, Institute of Plant Sciences Paris-Saclay (IPS2), Université Evry, Université Paris-Saclay, F-91405 Orsay, France
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da Fonseca-Pereira P, Souza PVL, Fernie AR, Timm S, Daloso DM, Araújo WL. Thioredoxin-mediated regulation of (photo)respiration and central metabolism. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:5987-6002. [PMID: 33649770 DOI: 10.1093/jxb/erab098] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
Thioredoxins (TRXs) are ubiquitous proteins engaged in the redox regulation of plant metabolism. Whilst the light-dependent TRX-mediated activation of Calvin-Benson cycle enzymes is well documented, the role of extraplastidial TRXs in the control of the mitochondrial (photo)respiratory metabolism has been revealed relatively recently. Mitochondrially located TRX o1 has been identified as a regulator of alternative oxidase, enzymes of, or associated with, the tricarboxylic acid (TCA) cycle, and the mitochondrial dihydrolipoamide dehydrogenase (mtLPD) involved in photorespiration, the TCA cycle, and the degradation of branched chain amino acids. TRXs are seemingly a major point of metabolic regulation responsible for activating photosynthesis and adjusting mitochondrial photorespiratory metabolism according to the prevailing cellular redox status. Furthermore, TRX-mediated (de)activation of TCA cycle enzymes contributes to explain the non-cyclic flux mode of operation of this cycle in illuminated leaves. Here we provide an overview on the decisive role of TRXs in the coordination of mitochondrial metabolism in the light and provide in silico evidence for other redox-regulated photorespiratory enzymes. We further discuss the consequences of mtLPD regulation beyond photorespiration and provide outstanding questions that should be addressed in future studies to improve our understanding of the role of TRXs in the regulation of central metabolism.
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Affiliation(s)
| | - Paulo V L Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Stefan Timm
- University of Rostock, Plant Physiology Department, Albert- Einstein-Str. 3, Rostock, Germany
| | - Danilo M Daloso
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Stitt M, Luca Borghi G, Arrivault S. Targeted metabolite profiling as a top-down approach to uncover interspecies diversity and identify key conserved operational features in the Calvin-Benson cycle. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:5961-5986. [PMID: 34473300 PMCID: PMC8411860 DOI: 10.1093/jxb/erab291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/21/2021] [Indexed: 05/02/2023]
Abstract
Improving photosynthesis is a promising avenue to increase crop yield. This will be aided by better understanding of natural variance in photosynthesis. Profiling of Calvin-Benson cycle (CBC) metabolites provides a top-down strategy to uncover interspecies diversity in CBC operation. In a study of four C4 and five C3 species, principal components analysis separated C4 species from C3 species and also separated different C4 species. These separations were driven by metabolites that reflect known species differences in their biochemistry and pathways. Unexpectedly, there was also considerable diversity between the C3 species. Falling atmospheric CO2 and changing temperature, nitrogen, and water availability have driven evolution of C4 photosynthesis in multiple lineages. We propose that analogous selective pressures drove lineage-dependent evolution of the CBC in C3 species. Examples of species-dependent variation include differences in the balance between the CBC and the light reactions, and in the balance between regulated steps in the CBC. Metabolite profiles also reveal conserved features including inactivation of enzymes in low irradiance, and maintenance of CBC metabolites at relatively high levels in the absence of net CO2 fixation. These features may be important for photosynthetic efficiency in low light, fluctuating irradiance, and when stomata close due to low water availability.
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Affiliation(s)
- Mark Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Gian Luca Borghi
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
| | - Stéphanie Arrivault
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
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Wang X, Jiang Z, Yue N, Jin X, Zhang X, Li Z, Zhang Y, Wang X, Han C, Yu J, Li D. Barley stripe mosaic virus γb protein disrupts chloroplast antioxidant defenses to optimize viral replication. EMBO J 2021; 40:e107660. [PMID: 34254679 PMCID: PMC8365260 DOI: 10.15252/embj.2021107660] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 06/10/2021] [Accepted: 06/17/2021] [Indexed: 01/21/2023] Open
Abstract
The plant antioxidant system plays important roles in response to diverse abiotic and biotic stresses. However, the effects of virus infection on host redox homeostasis and how antioxidant defense pathway is manipulated by viruses remain poorly understood. We previously demonstrated that the Barley stripe mosaic virus (BSMV) γb protein is recruited to the chloroplast by the viral αa replicase to enhance viral replication. Here, we show that BSMV infection induces chloroplast oxidative stress. The versatile γb protein interacts directly with NADPH-dependent thioredoxin reductase C (NTRC), a core component of chloroplast antioxidant systems. Overexpression of NbNTRC significantly impairs BSMV replication in Nicotiana benthamiana plants, whereas disruption of NbNTRC expression leads to increased viral accumulation and infection severity. To counter NTRC-mediated defenses, BSMV employs the γb protein to competitively interfere with NbNTRC binding to 2-Cys Prx. Altogether, this study indicates that beyond acting as a helicase enhancer, γb also subverts NTRC-mediated chloroplast antioxidant defenses to create an oxidative microenvironment conducive to viral replication.
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Affiliation(s)
- Xueting Wang
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Zhihao Jiang
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Ning Yue
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Xuejiao Jin
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Xuan Zhang
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Zhaolei Li
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Yongliang Zhang
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Xian‐Bing Wang
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Chenggui Han
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Jialin Yu
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Dawei Li
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
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Tola AJ, Jaballi A, Missihoun TD. Protein Carbonylation: Emerging Roles in Plant Redox Biology and Future Prospects. PLANTS (BASEL, SWITZERLAND) 2021; 10:1451. [PMID: 34371653 PMCID: PMC8309296 DOI: 10.3390/plants10071451] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/26/2021] [Accepted: 07/09/2021] [Indexed: 12/15/2022]
Abstract
Plants are sessile in nature and they perceive and react to environmental stresses such as abiotic and biotic factors. These induce a change in the cellular homeostasis of reactive oxygen species (ROS). ROS are known to react with cellular components, including DNA, lipids, and proteins, and to interfere with hormone signaling via several post-translational modifications (PTMs). Protein carbonylation (PC) is a non-enzymatic and irreversible PTM induced by ROS. The non-enzymatic feature of the carbonylation reaction has slowed the efforts to identify functions regulated by PC in plants. Yet, in prokaryotic and animal cells, studies have shown the relevance of protein carbonylation as a signal transduction mechanism in physiological processes including hydrogen peroxide sensing, cell proliferation and survival, ferroptosis, and antioxidant response. In this review, we provide a detailed update on the most recent findings pertaining to the role of PC and its implications in various physiological processes in plants. By leveraging the progress made in bacteria and animals, we highlight the main challenges in studying the impacts of carbonylation on protein functions in vivo and the knowledge gap in plants. Inspired by the success stories in animal sciences, we then suggest a few approaches that could be undertaken to overcome these challenges in plant research. Overall, this review describes the state of protein carbonylation research in plants and proposes new research avenues on the link between protein carbonylation and plant redox biology.
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Affiliation(s)
| | | | - Tagnon D. Missihoun
- Groupe de Recherche en Biologie Végétale (GRBV), Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 boul. des Forges, Trois-Rivières, QC G9A 5H7, Canada; (A.J.T.); (A.J.)
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Müller-Schüssele SJ, Bohle F, Rossi J, Trost P, Meyer AJ, Zaffagnini M. Plasticity in plastid redox networks: evolution of glutathione-dependent redox cascades and glutathionylation sites. BMC PLANT BIOLOGY 2021; 21:322. [PMID: 34225654 PMCID: PMC8256493 DOI: 10.1186/s12870-021-03087-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 06/08/2021] [Indexed: 05/14/2023]
Abstract
BACKGROUND Flexibility of plant metabolism is supported by redox regulation of enzymes via posttranslational modification of cysteine residues, especially in plastids. Here, the redox states of cysteine residues are partly coupled to the thioredoxin system and partly to the glutathione pool for reduction. Moreover, several plastid enzymes involved in reactive oxygen species (ROS) scavenging and damage repair draw electrons from glutathione. In addition, cysteine residues can be post-translationally modified by forming a mixed disulfide with glutathione (S-glutathionylation), which protects thiol groups from further oxidation and can influence protein activity. However, the evolution of the plastid glutathione-dependent redox network in land plants and the conservation of cysteine residues undergoing S-glutathionylation is largely unclear. RESULTS We analysed the genomes of nine representative model species from streptophyte algae to angiosperms and found that the antioxidant enzymes and redox proteins belonging to the plastid glutathione-dependent redox network are largely conserved, except for lambda- and the closely related iota-glutathione S-transferases. Focussing on glutathione-dependent redox modifications, we screened the literature for target thiols of S-glutathionylation, and found that 151 plastid proteins have been identified as glutathionylation targets, while the exact cysteine residue is only known for 17% (26 proteins), with one or multiple sites per protein, resulting in 37 known S-glutathionylation sites for plastids. However, 38% (14) of the known sites were completely conserved in model species from green algae to flowering plants, with 22% (8) on non-catalytic cysteines. Variable conservation of the remaining sites indicates independent gains and losses of cysteines at the same position during land plant evolution. CONCLUSIONS We conclude that the glutathione-dependent redox network in plastids is highly conserved in streptophytes with some variability in scavenging and damage repair enzymes. Our analysis of cysteine conservation suggests that S-glutathionylation in plastids plays an important and yet under-investigated role in redox regulation and stress response.
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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, 53113, Bonn, Germany.
- Present Address: Department of Biology, Technische Universität Kaiserslautern, 67663, Kaiserslautern, Germany.
| | - Finja Bohle
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Jacopo Rossi
- Department of Pharmacy and Biotechnology, University of Bologna, 40126, Bologna, Italy
| | - Paolo Trost
- Department of Pharmacy and Biotechnology, University of Bologna, 40126, Bologna, Italy
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Mirko Zaffagnini
- Department of Pharmacy and Biotechnology, University of Bologna, 40126, Bologna, Italy
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45
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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: 15] [Impact Index Per Article: 5.0] [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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Kharwar S, Bhattacharjee S, Mishra AK. Bioinformatics analysis of enzymes involved in cysteine biosynthesis: first evidence for the formation of cysteine synthase complex in cyanobacteria. 3 Biotech 2021; 11:354. [PMID: 34249595 DOI: 10.1007/s13205-021-02899-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/14/2021] [Indexed: 11/29/2022] Open
Abstract
The biosynthesis of cysteine is crucial and critically regulated by two enzymes. i.e., serine acetyl transferase (SAT) and O-acetyl serine (thiol) lyase (OAS-TL). A descriptive account on the activity and regulatory mechanism of the enzyme is available in bacteria and plants. But no such studies yet performed in cyanobacteria, to understand the evolutionary aspect of cysteine biosynthesis and its regulation. Therefore, in our study a detailed bioinformatic analysis has been performed to understand all the possible features of cyanobacterial SATs and OAS-TLs. The analysis of SAT and OAS-TL sequences from cyanobacteria depicted that the large genome and morphological complexities favoured acquisition of these genes. Besides, conserved function of these enzymes was presumed by their sequence similarity. Further, the phylogenetic tree consisted of distinct clusters for unicellular, filamentous, and heterocytous strains. Nevertheless, the specificity pocket, SVKDR for OAS-TL having K as catalytic residue was also identified. Additionally, in silico protein modelling of SAT (SrpG) and OAS-TL (SrpH) of Synechococcus elongatus PCC 7942 was performed to gain insight into the structural attributes of the proteins. Finally, here we showed the possibility of hetero-oligomeric bi-enzyme cysteine synthase complex formation upon interaction of SAT and OAS-TL through protein-protein docking analysis thus provides a way to understand the regulation of cysteine biosynthesis in cyanobacteria. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02899-1.
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Affiliation(s)
- Surbhi Kharwar
- Laboratory of Microbial Genetics, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
| | - Samujjal Bhattacharjee
- Laboratory of Microbial Genetics, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
| | - Arun Kumar Mishra
- Laboratory of Microbial Genetics, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
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47
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Liu Y, Zhu F, Shen Z, Moural TW, Liu L, Li Z, Liu X, Xu H. Glutaredoxins and thioredoxin peroxidase involved in defense of emamectin benzoate induced oxidative stress in Grapholita molesta. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 176:104881. [PMID: 34119223 DOI: 10.1016/j.pestbp.2021.104881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/08/2021] [Accepted: 05/19/2021] [Indexed: 06/12/2023]
Abstract
Glutaredoxins (Grxs) and thioredoxin peroxidases (Tpxs) are major antioxidant enzyme families involved in regulating cellular redox homeostasis and in defense of enhanced oxidative stress through scavenging reactive oxygen species (ROS). However, the functions of these enzymes have not been reported in the oriental fruit moth, Grapholita molesta (Busck), a worldwide pest of stone and pome fruits. Here, we identified four new antioxidant genes, GmGrx, GmGrx3, GmGrx5, and GmTpx which were induced by exposure with emamectin benzoate, a commonly used biopesticide for G. molesta control. Other environmental factors (low and high temperatures, Escherichia coli and Metarhizium anisopliae) also significantly induced the expression of these genes. After GmGrx or GmTpx silenced by RNA interference (RNAi), the percentage of larval survival to emamectin benzoate were significantly decreased, demonstrating that GmGrx and GmTpx are involved in protecting G. molesta from stresses induced by emamectin benzoate. Furthermore, silenced GmGrx, GmGrx3, GmGrx5, or GmTpx significantly enhanced the enzymatic activities of superoxide dismutase (SOD) (except GmTpx) and peroxidase (POD), as well as the contents of hydrogen peroxide and metabolites ascorbate. Taken together, our results suggest that GmGrx, GmGrx3, GmGrx5, and GmTpx may play critical roles in antioxidant defense. Specially, GmGrx and GmTpx contribute to the defense of oxidative damage induced by exposure to emamectin benzoate through scavenging excessive ROS in G. molesta. Our findings provided a theoretical basis for understanding functions of insect glutaredoxin and peroxidase systems.
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Affiliation(s)
- Yanjun Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China; Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Fang Zhu
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Zhongjian Shen
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Timothy W Moural
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Lining Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhen Li
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiaoxia Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Huanli Xu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China.
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48
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Moghaddam SM, Oladzad A, Koh C, Ramsay L, Hart JP, Mamidi S, Hoopes G, Sreedasyam A, Wiersma A, Zhao D, Grimwood J, Hamilton JP, Jenkins J, Vaillancourt B, Wood JC, Schmutz J, Kagale S, Porch T, Bett KE, Buell CR, McClean PE. The tepary bean genome provides insight into evolution and domestication under heat stress. Nat Commun 2021; 12:2638. [PMID: 33976152 PMCID: PMC8113540 DOI: 10.1038/s41467-021-22858-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 01/07/2021] [Indexed: 02/03/2023] Open
Abstract
Tepary bean (Phaseolus acutifolis A. Gray), native to the Sonoran Desert, is highly adapted to heat and drought. It is a sister species of common bean (Phaseolus vulgaris L.), the most important legume protein source for direct human consumption, and whose production is threatened by climate change. Here, we report on the tepary genome including exploration of possible mechanisms for resilience to moderate heat stress and a reduced disease resistance gene repertoire, consistent with adaptation to arid and hot environments. Extensive collinearity and shared gene content among these Phaseolus species will facilitate engineering climate adaptation in common bean, a key food security crop, and accelerate tepary bean improvement.
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Affiliation(s)
- Samira Mafi Moghaddam
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA ,grid.17088.360000 0001 2150 1785Plant Resilience Institute, Michigan State University, East Lansing, MI USA
| | - Atena Oladzad
- grid.261055.50000 0001 2293 4611Department of Plant Sciences and Genomics and Bioinformatics Program, North Dakota State University, Fargo, ND USA
| | - Chushin Koh
- grid.25152.310000 0001 2154 235XDepartment of Plant Sciences, University of Saskatchewan, Saskatoon, SK Canada ,grid.25152.310000 0001 2154 235XGlobal Institute for Food Security (GIFS), University of Saskatchewan, Saskatoon, SK Canada
| | - Larissa Ramsay
- grid.25152.310000 0001 2154 235XDepartment of Plant Sciences, University of Saskatchewan, Saskatoon, SK Canada
| | - John P. Hart
- USDA-ARS-Tropical Agriculture Research Station, Mayaguez, PR USA
| | - Sujan Mamidi
- grid.417691.c0000 0004 0408 3720HudsonAlpha Institute for Biotechnology, Huntsville, AL USA
| | - Genevieve Hoopes
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA
| | - Avinash Sreedasyam
- grid.417691.c0000 0004 0408 3720HudsonAlpha Institute for Biotechnology, Huntsville, AL USA
| | - Andrew Wiersma
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA ,grid.17088.360000 0001 2150 1785Plant Resilience Institute, Michigan State University, East Lansing, MI USA
| | - Dongyan Zhao
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA
| | - Jane Grimwood
- grid.417691.c0000 0004 0408 3720HudsonAlpha Institute for Biotechnology, Huntsville, AL USA ,grid.184769.50000 0001 2231 4551US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA USA
| | - John P. Hamilton
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA
| | - Jerry Jenkins
- grid.417691.c0000 0004 0408 3720HudsonAlpha Institute for Biotechnology, Huntsville, AL USA ,grid.184769.50000 0001 2231 4551US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA USA
| | - Brieanne Vaillancourt
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA
| | - Joshua C. Wood
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA
| | - Jeremy Schmutz
- grid.417691.c0000 0004 0408 3720HudsonAlpha Institute for Biotechnology, Huntsville, AL USA ,grid.184769.50000 0001 2231 4551US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA USA
| | - Sateesh Kagale
- grid.24433.320000 0004 0449 7958National Research Council Canada, Saskatoon, SK Canada
| | - Timothy Porch
- USDA-ARS-Tropical Agriculture Research Station, Mayaguez, PR USA
| | - Kirstin E. Bett
- grid.25152.310000 0001 2154 235XDepartment of Plant Sciences, University of Saskatchewan, Saskatoon, SK Canada
| | - C. Robin Buell
- grid.17088.360000 0001 2150 1785Department of Plant Biology, Michigan State University, East Lansing, MI USA ,grid.17088.360000 0001 2150 1785Plant Resilience Institute, Michigan State University, East Lansing, MI USA ,grid.17088.360000 0001 2150 1785Michigan State University AgBioResearch, East Lansing, MI USA
| | - Phillip E. McClean
- grid.261055.50000 0001 2293 4611Department of Plant Sciences and Genomics and Bioinformatics Program, North Dakota State University, Fargo, ND USA
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49
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Launay H, Shao H, Bornet O, Cantrelle FX, Lebrun R, Receveur-Brechot V, Gontero B. Flexibility of Oxidized and Reduced States of the Chloroplast Regulatory Protein CP12 in Isolation and in Cell Extracts. Biomolecules 2021; 11:biom11050701. [PMID: 34066751 PMCID: PMC8151241 DOI: 10.3390/biom11050701] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022] Open
Abstract
In the chloroplast, Calvin–Benson–Bassham enzymes are active in the reducing environment created in the light by electrons from the photosystems. In the dark, these enzymes are inhibited, mainly caused by oxidation of key regulatory cysteine residues. CP12 is a small protein that plays a role in this regulation with four cysteine residues that undergo a redox transition. Using amide-proton exchange with solvent, measured by nuclear magnetic resonance (NMR) and mass-spectrometry, we confirmed that reduced CP12 is intrinsically disordered. Using real-time NMR, we showed that the oxidation of the two disulfide bridges is simultaneous. In oxidized CP12, the C23–C31 pair is in a region that undergoes a conformational exchange in the NMR-intermediate timescale. The C66–C75 pair is in the C-terminus that folds into a stable helical turn. We confirmed that these structural states exist in a physiologically relevant environment: a cell extract from Chlamydomonas reinhardtii. Consistent with these structural equilibria, the reduction is slower for the C66–C75 pair than for the C23–C31 pair. The redox mid-potentials for the two cysteine pairs differ and are similar to those found for glyceraldehyde 3-phosphate dehydrogenase and phosphoribulokinase, consistent with the regulatory role of CP12.
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Affiliation(s)
- Helene Launay
- Aix Marseille Univ, CNRS, BIP, UMR7281, F-13402 Marseille, France; (H.S.); (V.R.-B.)
- Correspondence: (H.L.); (B.G.)
| | - Hui Shao
- Aix Marseille Univ, CNRS, BIP, UMR7281, F-13402 Marseille, France; (H.S.); (V.R.-B.)
| | - Olivier Bornet
- NMR Platform, Institut de Microbiologie de la Méditerranée, Aix Marseille Univ, F-13009 Marseille, France;
| | - Francois-Xavier Cantrelle
- CNRS, ERL9002, Integrative Structural Biology, Univ. Lille, F-59658 Lille, France;
- U1167, INSERM, CHU Lille, Institut Pasteur de Lille, F-59019 Lille, France
| | - Regine Lebrun
- Plate-forme Protéomique, Marseille Protéomique (MaP), IMM FR 3479, 31 Chemin Joseph Aiguier, F-13009 Marseille, France;
| | | | - Brigitte Gontero
- Aix Marseille Univ, CNRS, BIP, UMR7281, F-13402 Marseille, France; (H.S.); (V.R.-B.)
- Correspondence: (H.L.); (B.G.)
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50
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Selinski J, Scheibe R. Central Metabolism in Mammals and Plants as a Hub for Controlling Cell Fate. Antioxid Redox Signal 2021; 34:1025-1047. [PMID: 32620064 PMCID: PMC8060724 DOI: 10.1089/ars.2020.8121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023]
Abstract
Significance: The importance of oxidoreductases in energy metabolism together with the occurrence of enzymes of central metabolism in the nucleus gave rise to the active research field aiming to understand moonlighting enzymes that undergo post-translational modifications (PTMs) before carrying out new tasks. Recent Advances: Cytosolic enzymes were shown to induce gene transcription after PTM and concomitant translocation to the nucleus. Changed properties of the oxidized forms of cytosolic glyceraldehyde 3-phosphate dehydrogenase, and also malate dehydrogenases and others, are the basis for a hypothesis suggesting moonlighting functions that directly link energy metabolism to adaptive responses required for maintenance of redox-homeostasis in all eukaryotes. Critical Issues: Small molecules, such as metabolic intermediates, coenzymes, or reduced glutathione, were shown to fine-tune the redox switches, interlinking redox state, metabolism, and induction of new functions via nuclear gene expression. The cytosol with its metabolic enzymes connecting energy fluxes between the various cell compartments can be seen as a hub for redox signaling, integrating the different signals for graded and directed responses in stressful situations. Future Directions: Enzymes of central metabolism were shown to interact with p53 or the assumed plant homologue suppressor of gamma response 1 (SOG1), an NAM, ATAF, and CUC transcription factor involved in the stress response upon ultraviolet exposure. Metabolic enzymes serve as sensors for imbalances, their inhibition leading to changed energy metabolism, and the adoption of transcriptional coactivator activities. Depending on the intensity of the impact, rerouting of energy metabolism, proliferation, DNA repair, cell cycle arrest, immune responses, or cell death will be induced. Antioxid. Redox Signal. 34, 1025-1047.
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Affiliation(s)
- Jennifer Selinski
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Renate Scheibe
- Department of Plant Physiology, Faculty of Biology/Chemistry, Osnabrueck University, Osnabrueck, Germany
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