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Baier M, Bittner A, Prescher A, van Buer J. Preparing plants for improved cold tolerance by priming. PLANT, CELL & ENVIRONMENT 2019; 42:782-800. [PMID: 29974962 DOI: 10.1111/pce.13394] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/21/2018] [Accepted: 06/25/2018] [Indexed: 05/26/2023]
Abstract
Cold is a major stressor, which limits plant growth and development in many parts of the world, especially in the temperate climate zones. A large number of experimental studies has demonstrated that not only acclimation and entrainment but also the experience of single short stress events of various abiotic or biotic kinds (priming stress) can improve the tolerance of plants to chilling temperatures. This process, called priming, depends on a stress "memory". It does not change cold sensitivity per se but beneficially modifies the response to cold and can last for days, months, or even longer. Elicitor factors and antagonists accumulate due to increased biosynthesis or decreased degradation either during or after the priming stimulus. Comparison of priming studies investigating improved tolerance to chilling temperatures highlighted key regulatory functions of ROS/RNS and antioxidant enzymes, plant hormones, especially jasmonates, salicylates, and abscisic acid, and signalling metabolites, such as β- and γ-aminobutyric acid (BABA and GABA) and melatonin. We conclude that these elicitors and antagonists modify local and systemic cold tolerance by integration into cold-induced signalling cascades.
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Affiliation(s)
- Margarete Baier
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of Berlin, Berlin, Germany
| | - Andras Bittner
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of Berlin, Berlin, Germany
| | - Andreas Prescher
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of Berlin, Berlin, Germany
| | - Jörn van Buer
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of Berlin, Berlin, Germany
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2
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van Buer J, Prescher A, Baier M. Cold-priming of chloroplast ROS signalling is developmentally regulated and is locally controlled at the thylakoid membrane. Sci Rep 2019; 9:3022. [PMID: 30816299 PMCID: PMC6395587 DOI: 10.1038/s41598-019-39838-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/29/2019] [Indexed: 12/31/2022] Open
Abstract
24 h exposure to 4 °C primes Arabidopsis thaliana in the pre-bolting rosette stage for several days against full cold activation of the ROS responsive genes ZAT10 and BAP1 and causes stronger cold-induction of pleiotropically stress-regulated genes. Transient over-expression of thylakoid ascorbate peroxidase (tAPX) at 20 °C mimicked and tAPX transcript silencing antagonized cold-priming of ZAT10 expression. The tAPX effect could not be replaced by over-expression of stromal ascorbate peroxidase (sAPX) demonstrating that priming is specific to regulation of tAPX availability and, consequently, regulated locally at the thylakoid membrane. Arabidopsis acquired cold primability in the early rosette stage between 2 and 4 weeks. During further rosette development, primability was widely maintained in the oldest leaves. Later formed and later maturing leaves were not primable demonstrating that priming is stronger regulated with plant age than with leaf age. In 4-week-old plants, which were strongest primable, the memory was fully erasable and lost seven days after priming. In summary, we conclude that cold-priming of chloroplast-to-nucleus ROS signalling by transient post-stress induction of tAPX transcription is a strategy to modify cell signalling for some time without affecting the alertness for activation of cold acclimation responses.
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Affiliation(s)
- Jörn van Buer
- Plant Physiology, Freie Universität Berlin, Dahlem Centre of Plant Sciences, Königin-Luise-Straße 12-16, 14195, Berlin, Germany
| | - Andreas Prescher
- Plant Physiology, Freie Universität Berlin, Dahlem Centre of Plant Sciences, Königin-Luise-Straße 12-16, 14195, Berlin, Germany
| | - Margarete Baier
- Plant Physiology, Freie Universität Berlin, Dahlem Centre of Plant Sciences, Königin-Luise-Straße 12-16, 14195, Berlin, Germany.
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3
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Dreyer A, Dietz KJ. Reactive Oxygen Species and the Redox-Regulatory Network in Cold Stress Acclimation. Antioxidants (Basel) 2018; 7:E169. [PMID: 30469375 PMCID: PMC6262571 DOI: 10.3390/antiox7110169] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 01/08/2023] Open
Abstract
Cold temperatures restrict plant growth, geographical extension of plant species, and agricultural practices. This review deals with cold stress above freezing temperatures often defined as chilling stress. It focuses on the redox regulatory network of the cell under cold temperature conditions. Reactive oxygen species (ROS) function as the final electron sink in this network which consists of redox input elements, transmitters, targets, and sensors. Following an introduction to the critical network components which include nicotinamide adenine dinucleotide phosphate (NADPH)-dependent thioredoxin reductases, thioredoxins, and peroxiredoxins, typical laboratory experiments for cold stress investigations will be described. Short term transcriptome and metabolome analyses allow for dissecting the early responses of network components and complement the vast data sets dealing with changes in the antioxidant system and ROS. This review gives examples of how such information may be integrated to advance our knowledge on the response and function of the redox regulatory network in cold stress acclimation. It will be exemplarily shown that targeting the redox network might be beneficial and supportive to improve cold stress acclimation and plant yield in cold climate.
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Affiliation(s)
- Anna Dreyer
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany.
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany.
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van Rooijen R, Kruijer W, Boesten R, van Eeuwijk FA, Harbinson J, Aarts MGM. Natural variation of YELLOW SEEDLING1 affects photosynthetic acclimation of Arabidopsis thaliana. Nat Commun 2017; 8:1421. [PMID: 29123092 PMCID: PMC5680337 DOI: 10.1038/s41467-017-01576-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 09/29/2017] [Indexed: 12/28/2022] Open
Abstract
Exploiting genetic variation for more efficient photosynthesis is an underexplored route towards new crop varieties. This study demonstrates the genetic dissection of higher plant photosynthesis efficiency down to the genomic DNA level, by confirming that allelic sequence variation at the Arabidopsis thaliana YELLOW SEEDLING1 (YS1) gene explains natural diversity in photosynthesis acclimation to high irradiance. We use a genome-wide association study to identify quantitative trait loci (QTLs) involved in the Arabidopsis photosynthetic acclimation response. Candidate genes underlying the QTLs are prioritized according to functional clues regarding gene ontology, expression and function. Reverse genetics and quantitative complementation confirm the candidacy of YS1, which encodes a pentatrico-peptide-repeat (PPR) protein involved in RNA editing of plastid-encoded genes (anterograde signalling). Gene expression analysis and allele sequence comparisons reveal polymorphisms in a light-responsive element in the YS1 promoter that affect its expression, and that of its downstream targets, resulting in the variation in photosynthetic acclimation. Natural genetic variation of photosynthesis is an underexplored resource for plant genetic improvement. Here, the authors find allelic variations of YS1 affect Arabidopsis photosynthesis acclimation using genome-wide association study, reverse genetics, and quantitative complementation approaches.
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Affiliation(s)
- Roxanne van Rooijen
- Laboratory of Genetics, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.,Horticulture and Product Physiology Group, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.,Cluster of Excellence on Plant Science, Heinrich Heine University, Düsseldorf, Germany
| | - Willem Kruijer
- Mathematical and Statistical Methods Group - Biometris, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - René Boesten
- Laboratory of Genetics, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Fred A van Eeuwijk
- Mathematical and Statistical Methods Group - Biometris, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Jeremy Harbinson
- Horticulture and Product Physiology Group, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Mark G M Aarts
- Laboratory of Genetics, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.
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Cvetkovic J, Müller K, Baier M. The effect of cold priming on the fitness of Arabidopsis thaliana accessions under natural and controlled conditions. Sci Rep 2017; 7:44055. [PMID: 28276450 PMCID: PMC5343467 DOI: 10.1038/srep44055] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/02/2017] [Indexed: 12/14/2022] Open
Abstract
Priming improves an organism's performance upon a future stress. To test whether cold priming supports protection in spring and how it is affected by cold acclimation, we compared seven Arabidopsis accessions with different cold acclimation potentials in the field and in the greenhouse for growth, photosynthetic performance and reproductive fitness in March and May after a 14 day long cold-pretreatment at 4 °C. In the plants transferred to the field in May, the effect of the cold pretreatment on the seed yield correlated with the cold acclimation potential of the accessions. In the March transferred plants, the reproductive fitness was most supported by the cold pretreatment in the accessions with the weakest cold acclimation potential. The fitness effect was linked to long-term effects of the cold pretreatment on photosystem II activity stabilization and leaf blade expansion. The study demonstrated that cold priming stronger impacts on plant fitness than cold acclimation in spring in accessions with intermediate and low cold acclimation potential.
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Affiliation(s)
- Jelena Cvetkovic
- Dahlem Center of Plant Sciences, Plant Physiology, Freie Universität Berlin, 14195 Berlin, Germany
| | - Klaus Müller
- Meterology, Freie Universität Berlin, 12165 Berlin, Germany
| | - Margarete Baier
- Dahlem Center of Plant Sciences, Plant Physiology, Freie Universität Berlin, 14195 Berlin, Germany
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Juszczak I, Bartels D. LEA gene expression, RNA stability and pigment accumulation in three closely related Linderniaceae species differing in desiccation tolerance. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 255:59-71. [PMID: 28131342 DOI: 10.1016/j.plantsci.2016.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/29/2016] [Accepted: 10/05/2016] [Indexed: 05/14/2023]
Abstract
Desiccation-tolerant plants (Craterostigma plantagineum and Lindernia brevidens) evolved a highly efficient strategies to prevent dehydration-induced irreversible damage. The protection system involves synthesis of LEA proteins, decrease of photosynthetic activity and activation of antioxidant systems. The regulation of these processes requires joint action of multiple proteins. Here, we present comparative analyses of accumulation of transcripts encoding components of the protection machinery, such as selected LEA proteins, enzymes of the chlorophyll degradation pathway and anthocyanin biosynthesis enzymes in total and polysomal RNA pools. The analyses revealed that desiccation-tolerant plants recruit mRNAs to ribosomes with higher efficiency than the desiccation-sensitive species L. subracemosa. Desiccation-tolerant species accumulated high amounts of LEA transcripts during dehydration and precisely controlled the amounts of chlorophyll keeping it at a level sufficient to activate photosynthesis after rehydration. In contrast, mRNA of L. subracemosa was prone to dehydration-induced degradation, decomposition of the photosynthetic apparatus and degradation of free chlorophyll. Thus, the results of the studies point to differences in the control of gene expression and degradation of chlorophyll in desiccation-tolerant versus desiccation-sensitive species when the plants were subjected to dehydration.
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Affiliation(s)
- Ilona Juszczak
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany.
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Hedtmann C, Guo W, Reifschneider E, Heiber I, Hiltscher H, van Buer J, Barsch A, Niehaus K, Rowan B, Lortzing T, Steppuhn A, Baier M. The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE 2017; 8:1650. [PMID: 29018463 PMCID: PMC5615928 DOI: 10.3389/fpls.2017.01650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 09/08/2017] [Indexed: 05/04/2023]
Abstract
The redox imbalanced 6 mutant (rimb6) of Arabidopsis thaliana was isolated in a genetic screening approach for mutants with defects in chloroplast-to-nucleus redox signaling. It has an atypically low activation status of the 2-Cys peroxiredoxin-A promoter in the seedling stage. rimb6 shows wildtype-like germination, seedling development and greening, but slower growth and reduced biomass in the rosette stage. Mapping of the casual mutation revealed that rimb6 carries a single nucleotide polymorphism in the gene encoding CONSTITUTIVE EXPRESSER OF PATHOGENESIS RELATED (PR) GENES 1, CPR1 (At4g12560), leading to a premature stop codon. CPR1 is known as a repressor of pathogen signaling and regulator of microtubule organization. Allelism of rimb6 and cpr1 revealed a function of CPR1 in chloroplast stress protection. Expression studies in pathogen signaling mutants demonstrated that CPR1-mediated activation of genes for photosynthesis and chloroplast antioxidant protection is, in contrast to activation of pathogen responses, regulated independently from PAD4-controlled salicylic acid (SA) accumulation. We conclude that the support of plastid function is a basic, SA-independent function of CPR1.
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Affiliation(s)
- Christiane Hedtmann
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of BerlinBerlin, Germany
| | - Wei Guo
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of BerlinBerlin, Germany
| | - Elena Reifschneider
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of BerlinBerlin, Germany
| | - Isabelle Heiber
- Plant Physiology and Biochemistry, Bielefeld UniversityBielefeld, Germany
| | - Heiko Hiltscher
- Plant Sciences, Heinrich Heine University of DüsseldorfDüsseldorf, Germany
| | - Jörn van Buer
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of BerlinBerlin, Germany
| | - Aiko Barsch
- Proteom- und Metabolomforschung, Bielefeld UniversityBielefeld, Germany
| | - Karsten Niehaus
- Proteom- und Metabolomforschung, Bielefeld UniversityBielefeld, Germany
| | - Beth Rowan
- Department of Molecular Biology, Max Planck Institute for Developmental BiologyTübingen, Germany
| | - Tobias Lortzing
- Department of Molecular Ecology, Free University of BerlinBerlin, Germany
| | - Anke Steppuhn
- Department of Molecular Ecology, Free University of BerlinBerlin, Germany
| | - Margarete Baier
- Plant Physiology, Dahlem Centre of Plant Sciences, Free University of BerlinBerlin, Germany
- *Correspondence: Margarete Baier
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8
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Zhang J, Huang X, Huang DJ, Zhang Y, Huang LK, Lu L, Yan HD. Studies on genetic diversity and phylogenetic relationships of limpograss (Hemarthria altissima) and related species based on combined chloroplast DNA intergenic spacer data. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.07.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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van Buer J, Cvetkovic J, Baier M. Cold regulation of plastid ascorbate peroxidases serves as a priming hub controlling ROS signaling in Arabidopsis thaliana. BMC PLANT BIOLOGY 2016; 16:163. [PMID: 27439459 PMCID: PMC4955218 DOI: 10.1186/s12870-016-0856-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/15/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND Short cold periods comprise a challenge to plant growth and development. Series of cold stresses improve plant performance upon a future cold stress. This effect could be provoked by priming, training or acclimation dependent hardening. Here, we compared the effect of 24 h (short priming stimulus) and of 2 week long cold-pretreatment (long priming stimulus) on the response of Arabidopsis thaliana to a single 24 h cold stimulus (triggering) after a 5 day long lag-phase, to test Arabidopsis for cold primability. RESULTS Three types of pretreatment dependent responses were observed: (1) The CBF-regulon controlled gene COR15A was stronger activated only after long-term cold pretreatment. (2) The non-chloroplast specific stress markers PAL1 and CHS were more induced by cold after long-term and slightly stronger expressed after short-term cold priming. (3) The chloroplast ROS signaling marker genes ZAT10 and BAP1 were less activated by the triggering stimulus in primed plants. The effects on ZAT10 and BAP1 were more pronounced in 24 h cold-primed plants than in 14 day long cold-primed ones demonstrating independence of priming from induction and persistence of primary cold acclimation responses. Transcript and protein abundance analysis and studies in specific knock-out lines linked the priming-specific regulation of ZAT10 and BAP1 induction to the priming-induced long-term regulation of stromal and thylakoid-bound ascorbate peroxidase (sAPX and tAPX) expression. CONCLUSION The plastid antioxidant system, especially, plastid ascorbate peroxidase regulation, transmits information on a previous cold stress over time without the requirement of establishing cold-acclimation. We hypothesize that the plastid antioxidant system serves as a priming hub and that priming-dependent regulation of chloroplast-to-nucleus ROS signaling is a strategy to prepare plants under unstable environmental conditions against unpredictable stresses by supporting extra-plastidic stress protection.
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Affiliation(s)
- Jörn van Buer
- Dahlem Center of Plant Sciences, Plant Physiology, Freie Universität Berlin, Königin-Luise-Straße 12-16, 14195 Berlin, Germany
| | - Jelena Cvetkovic
- Dahlem Center of Plant Sciences, Plant Physiology, Freie Universität Berlin, Königin-Luise-Straße 12-16, 14195 Berlin, Germany
| | - Margarete Baier
- Dahlem Center of Plant Sciences, Plant Physiology, Freie Universität Berlin, Königin-Luise-Straße 12-16, 14195 Berlin, Germany
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Juszczak I, Cvetkovic J, Zuther E, Hincha DK, Baier M. Natural Variation of Cold Deacclimation Correlates with Variation of Cold-Acclimation of the Plastid Antioxidant System in Arabidopsis thaliana Accessions. FRONTIERS IN PLANT SCIENCE 2016; 7:305. [PMID: 27014325 PMCID: PMC4794505 DOI: 10.3389/fpls.2016.00305] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/26/2016] [Indexed: 05/21/2023]
Abstract
Temperature variations impact on the balance between photosynthetic electron transport and electron-consuming assimilation reactions and transiently increase generation of reactive oxygen species (ROS). Previous studies demonstrated that the expression of C-repeat binding factors (CBFs), which activate cold acclimation reactions, respond to chloroplast ROS signals and that cold deacclimation is partly halted for days after the transfer of acclimated plants to optimal growth conditions in four Arabidopsis accessions from cold-continental habitats. We hypothesized that these accessions differ from others in the regulation of the plastid antioxidant system (PAS). In the present study, we compared the expression intensity of the 12 most prominent PAS genes for peroxidases, superoxide dismutase and low molecular weight antioxidant regenerating enzymes in 10 Arabidopsis accessions with regulation of CBF and COR (cold regulated genes) transcript levels and cold-regulated metabolite levels prior to cold, after 2 week long cold acclimation and during the first 3 days of deacclimation. In the accessions with prolonged activation of cold responses, by trend, weaker induction of various cold-inducible PAS genes and stronger decreases in the expression of negatively cold-regulated PAS genes were observed. Low PAS gene expression delayed the post-cold decrease in H2O2 levels after transfer of the plants from cold to optimal growth conditions. We conclude that weaker expression of various PAS genes in the cold is an adapted strategy of the Arabidopsis accessions N14, N13, Ms-0, and Kas-1 to avoid full inactivation of cold-responses in the first days after the end of the cold period.
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Affiliation(s)
- Ilona Juszczak
- Plant Physiology, Dahlem Center of Plant Sciences, Free University of BerlinBerlin, Germany
- Molecular Physiology, Institute of Molecular Physiology and Biotechnology of Plants, University of BonnBonn, Germany
| | - Jelena Cvetkovic
- Plant Physiology, Dahlem Center of Plant Sciences, Free University of BerlinBerlin, Germany
| | - Ellen Zuther
- Max-Planck-Institute of Molecular Plant PhysiologyPotsdam, Germany
| | - Dirk K. Hincha
- Max-Planck-Institute of Molecular Plant PhysiologyPotsdam, Germany
| | - Margarete Baier
- Plant Physiology, Dahlem Center of Plant Sciences, Free University of BerlinBerlin, Germany
- *Correspondence: Margarete Baier
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11
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Szymańska R, Nowicka B, Gabruk M, Glińska S, Michlewska S, Dłużewska J, Sawicka A, Kruk J, Laitinen R. Physiological and antioxidant responses of two accessions of Arabidopsis thaliana in different light and temperature conditions. PHYSIOLOGIA PLANTARUM 2015; 154:194-209. [PMID: 25214438 DOI: 10.1111/ppl.12278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 07/28/2014] [Accepted: 07/30/2014] [Indexed: 06/03/2023]
Abstract
During their lifetime, plants need to adapt to a changing environment, including light and temperature. To understand how these factors influence plant growth, we investigated the physiological and antioxidant responses of two Arabidopsis accessions, Shahdara (Sha) from the Shahdara valley (Tajikistan, Central Asia) in a mountainous area and Lovvik-5 (Lov-5) from northern Sweden to different light and temperature conditions. These accessions originate from different latitudes and have different life strategies, both of which are known to be influenced by light and temperature. We showed that both accessions grew better in high-light and at a lower temperature (16°C) than in low light and at 23°C. Interestingly, Sha had a lower chlorophyll content but more efficient non-photochemical quenching than Lov-5. Sha, also showed a higher expression of vitamin E biosynthetic genes. We did not observe any difference in the antioxidant prenyllipid level under these conditions. Our results suggest that the mechanisms that keep the plastoquinone (PQ)-pool in more oxidized state could play a role in the adaptation of these accessions to their local climatic conditions.
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Affiliation(s)
- Renata Szymańska
- Department of Medical Physics and Biophysics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow, 30-059, Poland
| | - Beatrycze Nowicka
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, 30-387, Poland
| | - Michał Gabruk
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, 30-387, Poland
| | - Sława Glińska
- Laboratory of Electron Microscopy, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, 90-237, Poland
| | - Sylwia Michlewska
- Laboratory of Electron Microscopy, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, 90-237, Poland
| | - Jolanta Dłużewska
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, 30-387, Poland
| | - Anna Sawicka
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, 30-387, Poland
| | - Jerzy Kruk
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, 30-387, Poland
| | - Roosa Laitinen
- Max-Planck-Institute of Molecular Plant Physiology, Molecular Mechanisms of Adaptation, Potsdam-Golm, 14476, Germany
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Yan H, Zhang X, Fu C, Huang L, Yin G, Nie G, Xu W, Liu X, Chen T, Lee S, Ma X, Peng Y, Yan Y, Ling Y, Liu W. Chloroplast DNA variation and genetic structure of Miscanthus sinensis in southwest China. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2014.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Heiber I, Cai W, Baier M. Linking chloroplast antioxidant defense to carbohydrate availability: the transcript abundance of stromal ascorbate peroxidase is sugar-controlled via ascorbate biosynthesis. MOLECULAR PLANT 2014; 7:58-70. [PMID: 24203232 DOI: 10.1093/mp/sst154] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
All genes encoding chloroplast antioxidant enzymes are nuclear-encoded and posttranscriptionally targeted to chloroplasts. The transcript levels of most of them decreased upon sucrose feeding like the transcript levels of many genes encoding components of the photosynthetic electron transport chain. However, the transcript abundance of stromal ascorbate peroxidase (s-APX; At4g08390) increased. Due to mild sugar application conditions, the plants kept the phosphorylation status of the ADP+ATP pool and the redox states of the NADPH+NADP+ and the ascorbate pools under control, which excludes them as signals in s-APX regulation. Correlation with ascorbate pool size regulation and comparison of transcript abundance regulation in the starch-biosynthetic mutant adg1, the ascorbate biosynthesis mutant vtc1, and the abscisic acid (ABA) biosynthetic mutant aba2 showed a link between sugar induction of s-APX and ascorbate biosynthesis.
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Affiliation(s)
- Isabelle Heiber
- a Former address: Plant Physiology and Biochemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
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Abstract
Reactive oxygen species (ROS) are produced in plants under both non-stressful and stressful conditions. Various histochemical staining methods have been developed and are widely used to visualize ROS accumulation sites. In contrast to qualitative analysis, quantification of ROS has been time- and labor consuming. As a consequence, the number of samples, which could be analyzed in parallel, has been limited. To overcome this problem, we introduce an improved semiquantitative method, in which ROS levels are quantified after histochemical staining in plant organs with the digital image analysis package ImageJ.
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Affiliation(s)
- Ilona Juszczak
- Plant Physiology, Dahlem Center of Plant Sciences, Freie Universität Berlin, Königin-Luise-Straße 12-16, D-14195, Berlin, Germany
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15
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Hiltscher H, Rudnik R, Shaikhali J, Heiber I, Mellenthin M, Meirelles Duarte I, Schuster G, Kahmann U, Baier M. The radical induced cell death protein 1 (RCD1) supports transcriptional activation of genes for chloroplast antioxidant enzymes. FRONTIERS IN PLANT SCIENCE 2014; 5:475. [PMID: 25295044 PMCID: PMC4172000 DOI: 10.3389/fpls.2014.00475] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 08/28/2014] [Indexed: 05/21/2023]
Abstract
The rimb1 (redox imbalanced 1) mutation was mapped to the RCD1 locus (radical-induced cell death 1; At1g32230) demonstrating that a major factor involved in redox-regulation genes for chloroplast antioxidant enzymes and protection against photooxidative stress, RIMB1, is identical to the regulator of disease response reactions and cell death, RCD1. Discovering this link let to our investigation of its regulatory mechanism. We show in yeast that RCD1 can physically interact with the transcription factor Rap2.4a which provides redox-sensitivity to nuclear expression of genes for chloroplast antioxidant enzymes. In the rimb1 (rcd1-6) mutant, a single nucleotide exchange results in a truncated RCD1 protein lacking the transcription factor binding site. Protein-protein interaction between full-length RCD1 and Rap2.4a is supported by H2O2, but not sensitive to the antioxidants dithiotreitol and ascorbate. In combination with transcript abundance analysis in Arabidopsis, it is concluded that RCD1 stabilizes the Rap2.4-dependent redox-regulation of the genes encoding chloroplast antioxidant enzymes in a widely redox-independent manner. Over the years, rcd1-mutant alleles have been described to develop symptoms like chlorosis, lesions along the leaf rims and in the mesophyll and (secondary) induction of extra- and intra-plastidic antioxidant defense mechanisms. All these rcd1 mutant characteristics were observed in rcd1-6 to succeed low activation of the chloroplast antioxidant system and glutathione biosynthesis. We conclude that RCD1 protects plant cells from running into reactive oxygen species (ROS)-triggered programs, such as cell death and activation of pathogen-responsive genes (PR genes) and extra-plastidic antioxidant enzymes, by supporting the induction of the chloroplast antioxidant system.
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Affiliation(s)
- Heiko Hiltscher
- Plant Science, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
| | | | - Jehad Shaikhali
- Plant Biochemistry and Physiology, Bielefeld UniversityBielefeld, Germany
- Department of Forest Genetics and Plant Physiology, Umea Plant Science Center, Swedish University of Agricultural SciencesUmea, Sweden
| | - Isabelle Heiber
- Plant Biochemistry and Physiology, Bielefeld UniversityBielefeld, Germany
| | - Marina Mellenthin
- Plant Science, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
| | | | - Günter Schuster
- Plant Science, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
| | - Uwe Kahmann
- Molecular Cell Physiology, Bielefeld UniversityBielefeld, Germany
| | - Margarete Baier
- Plant Science, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
- Plant Physiology, Freie Universität BerlinBerlin, Germany
- Plant Biochemistry and Physiology, Bielefeld UniversityBielefeld, Germany
- *Correspondence: Margarete Baier, Plant Physiology, Freie Universität Berlin, Königin-Luise-Straße 12-16, 14195 Berlin, Germany e-mail:
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Juszczak I, Baier M. The strength of the miR398-Csd2-CCS1 regulon is subject to natural variation in Arabidopsis thaliana. FEBS Lett 2012; 586:3385-90. [PMID: 22841720 DOI: 10.1016/j.febslet.2012.07.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 06/29/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
Abstract
miR398 links expression of the three major chloroplast copper proteins, plastocyanin, CCS1 and Csd2, to copper availability. miR398 abundance was stronger plastocyanin-controlled in accessions from cold and continental habitats (Kas-1, Ms-0, WS) than in Cvi-0 and Col-0. Target gene regulation was broken for Csd2 in Cvi-0 upon cold-treatment. Comparison of miR398 levels, target gene regulation as well as Ago1 and miR168 expression demonstrated that the miR398 regulon can be overwritten by accession specific transcriptional regulation in Cvi-0. It is concluded that the escape from the miRNA control of copper homeostasis is linked to adaptation of Cvi-0 to its harsh natural habitat.
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Affiliation(s)
- Ilona Juszczak
- Plant Physiology, Freie Universität Berlin, Berlin, Germany
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