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Tebele SM, Marks RA, Farrant JM. Two Decades of Desiccation Biology: A Systematic Review of the Best Studied Angiosperm Resurrection Plants. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122784. [PMID: 34961255 PMCID: PMC8706221 DOI: 10.3390/plants10122784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/06/2021] [Accepted: 12/06/2021] [Indexed: 05/25/2023]
Abstract
Resurrection plants have an extraordinary ability to survive extreme water loss but still revive full metabolic activity when rehydrated. These plants are useful models to understand the complex biology of vegetative desiccation tolerance. Despite extensive studies of resurrection plants, many details underlying the mechanisms of desiccation tolerance remain unexplored. To summarize the progress in resurrection plant research and identify unexplored questions, we conducted a systematic review of 15 model angiosperm resurrection plants. This systematic review provides an overview of publication trends on resurrection plants, the geographical distribution of species and studies, and the methodology used. Using the Preferred Reporting Items for Systematic reviews and Meta-Analyses protocol we surveyed all publications on resurrection plants from 2000 and 2020. This yielded 185 empirical articles that matched our selection criteria. The most investigated plants were Craterostigma plantagineum (17.5%), Haberlea rhodopensis (13.7%), Xerophyta viscosa (reclassified as X. schlechteri) (11.9%), Myrothamnus flabellifolia (8.5%), and Boea hygrometrica (8.1%), with all other species accounting for less than 8% of publications. The majority of studies have been conducted in South Africa, Bulgaria, Germany, and China, but there are contributions from across the globe. Most studies were led by researchers working within the native range of the focal species, but some international and collaborative studies were also identified. The number of annual publications fluctuated, with a large but temporary increase in 2008. Many studies have employed physiological and transcriptomic methodologies to investigate the leaves of resurrection plants, but there was a paucity of studies on roots and only one metagenomic study was recovered. Based on these findings we suggest that future research focuses on resurrection plant roots and microbiome interactions to explore microbial communities associated with these plants, and their role in vegetative desiccation tolerance.
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Affiliation(s)
- Shandry M. Tebele
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
| | - Rose A. Marks
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Plant Resiliency Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Jill M. Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
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A Decade of Pollen Phosphoproteomics. Int J Mol Sci 2021; 22:ijms222212212. [PMID: 34830092 PMCID: PMC8619407 DOI: 10.3390/ijms222212212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/01/2021] [Accepted: 11/08/2021] [Indexed: 12/15/2022] Open
Abstract
Angiosperm mature pollen represents a quiescent stage with a desiccated cytoplasm surrounded by a tough cell wall, which is resistant to the suboptimal environmental conditions and carries the genetic information in an intact stage to the female gametophyte. Post pollination, pollen grains are rehydrated, activated, and a rapid pollen tube growth starts, which is accompanied by a notable metabolic activity, synthesis of novel proteins, and a mutual communication with female reproductive tissues. Several angiosperm species (Arabidopsis thaliana, tobacco, maize, and kiwifruit) were subjected to phosphoproteomic studies of their male gametophyte developmental stages, mostly mature pollen grains. The aim of this review is to compare the available phosphoproteomic studies and to highlight the common phosphoproteins and regulatory trends in the studied species. Moreover, the pollen phosphoproteome was compared with root hair phosphoproteome to pinpoint the common proteins taking part in their tip growth, which share the same cellular mechanisms.
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Vidović M, Franchin C, Morina F, Veljović-Jovanović S, Masi A, Arrigoni G. Efficient protein extraction for shotgun proteomics from hydrated and desiccated leaves of resurrection Ramonda serbica plants. Anal Bioanal Chem 2020; 412:8299-8312. [PMID: 33037906 DOI: 10.1007/s00216-020-02965-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 08/31/2020] [Accepted: 09/22/2020] [Indexed: 11/30/2022]
Abstract
Resurrection plant Ramonda serbica is a suitable model to investigate vegetative desiccation tolerance. However, the detailed study of these mechanisms at the protein level is hampered by the severe tissue water loss, high amount of phenolics and polysaccharide, and possible protein modifications and aggregations during the extraction and purification steps. When applied to R. serbica leaves, widely used protein extraction protocols containing polyvinylpolypyrrolidone and ascorbate, as well as the phenol/SDS/buffer-based protocol recommended for recalcitrant plant tissues failed to eliminate persistent contamination and ensure high protein quality. Here we compared three protein extraction approaches aiming to establish the optimal one for both hydrated and desiccated R. serbica leaves. To evaluate the efficacy of these protocols by shotgun proteomics, we also created the first R. serbica annotated transcriptome database, available at http://www.biomed.unipd.it/filearrigoni/Trinity_Sample_RT2.fasta . The detergent-free phenol-based extraction combined with dodecyl-β-D-maltoside-assisted extraction enabled high-yield and high-purity protein extracts. The phenol-based protocol improved the protein-band resolution, band number, and intensity upon electrophoresis, and increased the protein yield and the number of identified peptides and protein groups by LC-MS/MS. Additionally, dodecyl-β-D-maltoside enabled solubilisation and identification of more membrane-associated proteins. The presented study paves the way for investigating the desiccation tolerance in R. serbica, and we recommend this protocol for similar recalcitrant plant material.
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Affiliation(s)
- Marija Vidović
- Institute for Multidisciplinary Research, Department of Life Science, University of Belgrade, Kneza Višeslava 1, Belgrade, 11030, Serbia.
- Institute of Molecular Genetics and Genetic Engineering, Laboratory for Plant Molecular Biology, University of Belgrade, Vojvode Stepe 444a, Belgrade, 11042, Serbia.
| | - Cinzia Franchin
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padua, Italy
- Proteomics Center University of Padova and Azienda Ospedaliera di Padova, Via G. Orus 2/B, 35129, Padua, Italy
| | - Filis Morina
- Institute for Multidisciplinary Research, Department of Life Science, University of Belgrade, Kneza Višeslava 1, Belgrade, 11030, Serbia
- Department of Plant Biophysics & Biochemistry, Biology Centre, Institute of Plant Molecular Biology, Czech Academy of Sciences, Branišovská 31/1160, 37005, České Budějovice, Czech Republic
| | - Sonja Veljović-Jovanović
- Institute for Multidisciplinary Research, Department of Life Science, University of Belgrade, Kneza Višeslava 1, Belgrade, 11030, Serbia
| | - Antonio Masi
- DAFNAE - University of Padova, Viale Università 16 - AGRIPOLIS, I-35020, Legnaro, PD, Italy
| | - Giorgio Arrigoni
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padua, Italy.
- Proteomics Center University of Padova and Azienda Ospedaliera di Padova, Via G. Orus 2/B, 35129, Padua, Italy.
- CRIBI Biotechnology Center, University of Padova, viale G. Colombo 3, 35131, Padua, Italy.
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Ufer G, Gertzmann A, Gasulla F, Röhrig H, Bartels D. Identification and characterization of the phosphatidic acid-binding A. thaliana phosphoprotein PLDrp1 that is regulated by PLDα1 in a stress-dependent manner. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 92:276-290. [PMID: 28755507 DOI: 10.1111/tpj.13651] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/12/2017] [Accepted: 07/24/2017] [Indexed: 05/08/2023]
Abstract
Phospholipase D (PLD) and its cleavage product phosphatidic acid (PA) are crucial in plant stress-signalling. Although some targets of PLD and PA have been identified, the signalling pathway is still enigmatic. This study demonstrates that the phosphoprotein At5g39570, now called PLD-regulated protein1 (PLDrp1), from Arabidopsis thaliana is directly regulated by PLDα1. The protein PLDrp1 can be divided into two regions with distinct properties. The conserved N-terminal region specifically binds PA, while the repeat-rich C-terminal domain suggests interactions with RNAs. The expression of PLDrp1 depends on PLDα1 and the plant water status. Water stress triggers a pldα1-like phenotype in PLDrp1 mutants and induces the expression of PLDrp1 in pldα1 mutants. The regulation of PLDrp1 by PLDα1 and environmental stressors contributes to the understanding of the complex PLD regulatory network and presents a new member of the PA-signalling chain in plants.
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Affiliation(s)
- Guido Ufer
- Institute of Molecular Physiology and Biotechnology of Planta (IMBIO), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Anke Gertzmann
- Institute of Molecular Physiology and Biotechnology of Planta (IMBIO), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Francisco Gasulla
- Institute of Molecular Physiology and Biotechnology of Planta (IMBIO), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Horst Röhrig
- Institute of Molecular Physiology and Biotechnology of Planta (IMBIO), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Planta (IMBIO), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
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Abstract
Protein phosphorylation was repeatedly shown to be the most dynamic post-translational modification mediated by a huge orchestra of protein kinases and phosphatases. Upon landing on a stigma, pollen grain dehydration and activation are accompanied by changes in protein phosphorylation together with the translation activation of stored mRNAs. To enable studies of the total phosphoproteome, it is usually necessary to apply various enrichment techniques. In this chapter, one of these protocols that worked previously well on tobacco mature pollen is presented in more detail. The method comprises of three basic steps: (1) picking flowers from the flowering tobacco plants (Nicotiana tabacum cv. Samsun), and collection of the shed pollen grains; (2) extraction of total proteins by TCA/acetone; (3) phosphoprotein enrichment by MOAC with aluminum hydroxide matrix. Taken together this protocol describes how to isolate phosphoproteins out of tobacco mature pollen.
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Affiliation(s)
- Jan Fíla
- Laboratory of Pollen Biology, Institute of Experimental Botany, AS CR, v.v.i., Rozvojová 263, 165 02, Prague 6, Lysolaje, Czech Republic
| | - David Honys
- Laboratory of Pollen Biology, Institute of Experimental Botany, AS CR, v.v.i., Rozvojová 263, 165 02, Prague 6, Lysolaje, Czech Republic.
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Gasulla F, Barreno E, Parages ML, Cámara J, Jiménez C, Dörmann P, Bartels D. The Role of Phospholipase D and MAPK Signaling Cascades in the Adaption of Lichen Microalgae to Desiccation: Changes in Membrane Lipids and Phosphoproteome. PLANT & CELL PHYSIOLOGY 2016; 57:1908-20. [PMID: 27335354 DOI: 10.1093/pcp/pcw111] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 06/06/2016] [Indexed: 05/27/2023]
Abstract
Classically, lichen phycobionts are described as poikilohydric organisms able to undergo desiccation due to the constitutive presence of molecular protection mechanisms. However, little is known about the induction of cellular responses in lichen phycobionts during drying. The analysis of the lipid composition of the desiccated lichen microalga Asterochloris erici revealed the unusual accumulation of highly polar lipids (oligogalactolipids and phosphatidylinositol), which prevents the fusion of membranes during stress, but also the active degradation of cone-shaped lipids (monogalactosyldiacylglycerol and phosphatidylethanolamine) to stabilize membranes in desiccated cells. The level of phosphatidic acid increased 7-fold during desiccation, implicating a possible role for phospholipase D (PLD) in the response to osmotic stress. Inhibition of PLD with 1-butanol markedly impaired the recovery of photosynthesis activity in A. erici upon desiccation and salt stress (2 M NaCl). These two hyperosmotic stresses caused the phosphorylation of c-Jun N-terminal kinase (JNK) and p38-like mitogen-activated protein kinase (MAPK) and the dephosphorylation of extracellular signal-regulated kinase (ERK). The incubation with 1-butanol reduced the phosphorylation of JNK-like proteins and increased the dephosphorylation of ERK-like proteins, which indicates an upstream control of MAPK cascades by PLD. The phosphoproteome showed that desiccation caused the phosphorylation of several proteins in A. erici, most of them involved in protein turnover. The results demonstrate that lichen phycobionts possess both constitutive and inducible protective mechanisms to acquire desiccation tolerance. Among others, these responses are controlled by the PLD pathway through the activation of MAPK cascades.
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Affiliation(s)
- Francisco Gasulla
- Departamento de Botánica & ICBIBE, Fac. C. Biológicas, Universitat de València, 46100 Burjassot, Spain Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, D-53115 Bonn, Germany
| | - Eva Barreno
- Departamento de Botánica & ICBIBE, Fac. C. Biológicas, Universitat de València, 46100 Burjassot, Spain
| | - María L Parages
- Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Joaquín Cámara
- Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Carlos Jiménez
- Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Peter Dörmann
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, D-53115 Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, D-53115 Bonn, Germany
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Fíla J, Radau S, Matros A, Hartmann A, Scholz U, Feciková J, Mock HP, Čapková V, Zahedi RP, Honys D. Phosphoproteomics Profiling of Tobacco Mature Pollen and Pollen Activated in vitro. Mol Cell Proteomics 2016; 15:1338-50. [PMID: 26792808 PMCID: PMC4824859 DOI: 10.1074/mcp.m115.051672] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 11/02/2015] [Indexed: 11/06/2022] Open
Abstract
Tobacco mature pollen has extremely desiccated cytoplasm, and is metabolically quiescent. Upon re-hydration it becomes metabolically active and that results in later emergence of rapidly growing pollen tube. These changes in cytoplasm hydration and metabolic activity are accompanied by protein phosphorylation. In this study, we subjected mature pollen, 5-min-activated pollen, and 30-min-activated pollen to TCA/acetone protein extraction, trypsin digestion and phosphopeptide enrichment by titanium dioxide. The enriched fraction was subjected to nLC-MS/MS. We identified 471 phosphopeptides that carried 432 phosphorylation sites, position of which was exactly matched by mass spectrometry. These 471 phosphopeptides were assigned to 301 phosphoproteins, because some proteins carried more phosphorylation sites. Of the 13 functional groups, the majority of proteins were put into these categories: transcription, protein synthesis, protein destination and storage, and signal transduction. Many proteins were of unknown function, reflecting the fact that male gametophyte contains many specific proteins that have not been fully functionally annotated. The quantitative data highlighted the dynamics of protein phosphorylation during pollen activation; the identified phosphopeptides were divided into seven groups based on the regulatory trends. The major group comprised mature pollen-specific phosphopeptides that were dephosphorylated during pollen activation. Several phosphopeptides representing the same phosphoprotein had different regulation, which pinpointed the complexity of protein phosphorylation and its clear functional context. Collectively, we showed the first phosphoproteomics data on activated pollen where the position of phosphorylation sites was clearly demonstrated and regulatory kinetics was resolved.
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Affiliation(s)
- Jan Fíla
- From the ‡Laboratory of Pollen Biology, Institute of Experimental Botany ASCR, v.v.i., Rozvojova 263, 165 00 Praha 6, Czech Republic
| | - Sonja Radau
- §Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straβe 6b, 44227 Dortmund, Germany
| | - Andrea Matros
- ¶Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetic and Crop Plant Research, Corrensstraβe 3, 06466 Gatersleben, Germany
| | - Anja Hartmann
- ¶Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetic and Crop Plant Research, Corrensstraβe 3, 06466 Gatersleben, Germany
| | - Uwe Scholz
- ‖Department of Breeding Research, Leibniz Institute of Plant Genetic and Crop Plant Research, Corrensstraβe 3, 06466 Gatersleben, Germany
| | - Jana Feciková
- From the ‡Laboratory of Pollen Biology, Institute of Experimental Botany ASCR, v.v.i., Rozvojova 263, 165 00 Praha 6, Czech Republic
| | - Hans-Peter Mock
- ¶Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetic and Crop Plant Research, Corrensstraβe 3, 06466 Gatersleben, Germany
| | - Věra Čapková
- From the ‡Laboratory of Pollen Biology, Institute of Experimental Botany ASCR, v.v.i., Rozvojova 263, 165 00 Praha 6, Czech Republic
| | - René Peiman Zahedi
- §Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straβe 6b, 44227 Dortmund, Germany
| | - David Honys
- From the ‡Laboratory of Pollen Biology, Institute of Experimental Botany ASCR, v.v.i., Rozvojova 263, 165 00 Praha 6, Czech Republic;
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Challabathula D, Puthur JT, Bartels D. Surviving metabolic arrest: photosynthesis during desiccation and rehydration in resurrection plants. Ann N Y Acad Sci 2015; 1365:89-99. [PMID: 26376004 DOI: 10.1111/nyas.12884] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Photosynthesis is the key process that is affected by dehydration in plants. Desiccation-tolerant resurrection plants can survive conditions of very low relative water content. During desiccation, photosynthesis is not operational, but is recovered within a short period after rehydration. While homoiochlorophyllous resurrection plants retain their photosynthetic apparatus during desiccation, poikilochlorophyllous resurrection species dismantle chloroplasts and degrade chlorophyll but resynthesize them again during rehydration. Dismantling the chloroplasts avoids the photooxidative stress in poikilochlorophyllous resurrection plants, whereas it is minimized in homoiochlorophyllous plants through the synthesis of antioxidant enzymes and protective proteins or metabolites. Although the cellular protection mechanisms in both of these species vary, these mechanisms protect cells from desiccation-induced damage and restore photosynthesis upon rehydration. Several of the proteins synthesized during dehydration are localized in chloroplasts and are believed to play major roles in the protection of photosynthetic structures and in recovery in resurrection species. This review focuses on the strategies of resurrection plants in terms of how they protect their photosynthetic apparatus from oxidative stress during desiccation without membrane damage and with full recovery during rehydration. We review the role of the dehydration-induced protection mechanisms in chloroplasts and how photosynthesis is restored during rehydration.
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Affiliation(s)
- Dinakar Challabathula
- Department of Life Sciences, School of Basic and Applied Sciences, Central University of Tamil Nadu, Tamil Nadu, India.,Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Bonn, Germany
| | - Jos T Puthur
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, Kerala, India
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Bonn, Germany
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Proteome Analysis for Understanding Abiotic Stress (Salinity and Drought) Tolerance in Date Palm (Phoenix dactylifera L.). Int J Genomics 2015; 2015:407165. [PMID: 26167472 PMCID: PMC4488584 DOI: 10.1155/2015/407165] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 02/15/2015] [Accepted: 02/17/2015] [Indexed: 11/21/2022] Open
Abstract
This study was carried out to study the proteome of date palm under salinity and drought stress conditions to possibly identify proteins involved in stress tolerance. For this purpose, three-month-old seedlings of date palm cultivar “Sagie” were subjected to drought (27.5 g/L polyethylene glycol 6000) and salinity stress conditions (16 g/L NaCl) for one month. DIGE analysis of protein extracts identified 47 differentially expressed proteins in leaves of salt- and drought-treated palm seedlings. Mass spectrometric analysis identified 12 proteins; three out of them were significantly changed under both salt and drought stress, while the other nine were significantly changed only in salt-stressed plants. The levels of ATP synthase alpha and beta subunits, an unknown protein and some of RubisCO fragments were significantly changed under both salt and drought stress conditions. Changes in abundance of superoxide dismutase, chlorophyll A-B binding protein, light-harvesting complex1 protein Lhca1, RubisCO activase, phosphoglycerate kinase, chloroplast light-harvesting chlorophyll a/b-binding protein, phosphoribulokinase, transketolase, RubisCO, and some of RubisCO fragments were significant only for salt stress.
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Fíla J, Čapková V, Honys D. Phosphoproteomic studies in Arabidopsis and tobacco male gametophytes. Biochem Soc Trans 2014; 42:383-7. [PMID: 24646248 DOI: 10.1042/bst20130249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Mature pollen represents an extremely resistant quiescent structure surrounded by a tough cell wall. After its hydration on stigma papillary cells, pollen tube growth starts rapidly. Massive metabolic changes are likely to be accompanied by changes in protein phosphorylation. Protein phosphorylation belongs among the most rapid post-translational modifications. To date, only Arabidopsis thaliana and tobacco (Nicotiana tabacum) mature pollen have been subjected to phosphoproteomic studies in order to identify the phosphoproteins present. In the present mini-review, Arabidopsis and tobacco datasets were compared with each other. The representation of the O-phosphorylated amino acids was compared between these two datasets, and the putative pollen-specific or pollen-abundant phosphopeptides were highlighted. Finally, the phosphorylation sites common for both Arabidopsis and tobacco phosphoproteins are listed as well as the phosphorylation motifs identified.
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Affiliation(s)
| | - Věra Čapková
- *Laboratory of Pollen Biology, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Rozvojová 263, Praha 6, Czech Republic
| | - David Honys
- *Laboratory of Pollen Biology, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Rozvojová 263, Praha 6, Czech Republic
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Gasulla F, Jain R, Barreno E, Guéra A, Balbuena TS, Thelen JJ, Oliver MJ. The response of Asterochloris erici (Ahmadjian) Skaloud et Peksa to desiccation: a proteomic approach. PLANT, CELL & ENVIRONMENT 2013; 36:1363-78. [PMID: 23305100 DOI: 10.1111/pce.12065] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 12/21/2012] [Accepted: 12/26/2012] [Indexed: 05/11/2023]
Abstract
The study of desiccation tolerance of lichens, and of their chlorobionts in particular, has frequently focused on the antioxidant system that protects the cell against photo-oxidative stress during dehydration/rehydration cycles. In this study, we used proteomic and transcript analyses to assess the changes associated with desiccation in the isolated phycobiont Asterochloris erici. Algae were dried either slowly (5-6 h) or rapidly (<60 min), and rehydrated after 24 h in the desiccated state. To identify proteins that accumulated during the drying or rehydration processes, we employed two-dimensional (2D) difference gel electrophoresis (DIGE) coupled with individual protein identification using trypsin digestion and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Proteomic analyses revealed that desiccation caused an increase in relative abundance of only 11-13 proteins, regardless of drying rate, involved in glycolysis, cellular protection, cytoskeleton, cell cycle, and targeting and degradation. Transcripts of five Hsp90 and two β-tubulin genes accumulated primarily at the end of the dehydration process. In addition, transmission electron microscopy (TEM) images indicate that ultrastructural cell injuries, perhaps resulting from physical or mechanical stress rather than metabolic damage, were more intense after rapid dehydration. This occurred with no major change in the proteome. These results suggest that desiccation tolerance of A. erici is achieved by constitutive mechanisms.
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Affiliation(s)
- Franscico Gasulla
- Dpt. Botànica, ICBiBE, Universitat de València, Burjassot 46100, Spain
| | - Renuka Jain
- Department of Biochemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Eva Barreno
- Dpt. Botànica, ICBiBE, Universitat de València, Burjassot, 46100, Spain
| | - Alfredo Guéra
- Dpto. Biología Vegetal, Universidad de Alcalá, Alcalá de Henares, 28871, Spain
| | - Tiago S Balbuena
- Department of Biochemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Jay J Thelen
- Department of Biochemistry, University of Missouri, Columbia, MO, 65211, USA
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12
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Gechev TS, Benina M, Obata T, Tohge T, Sujeeth N, Minkov I, Hille J, Temanni MR, Marriott AS, Bergström E, Thomas-Oates J, Antonio C, Mueller-Roeber B, Schippers JHM, Fernie AR, Toneva V. Molecular mechanisms of desiccation tolerance in the resurrection glacial relic Haberlea rhodopensis. Cell Mol Life Sci 2013; 70:689-709. [PMID: 22996258 PMCID: PMC11113823 DOI: 10.1007/s00018-012-1155-6] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 08/29/2012] [Accepted: 08/30/2012] [Indexed: 12/29/2022]
Abstract
Haberlea rhodopensis is a resurrection plant with remarkable tolerance to desiccation. Haberlea exposed to drought stress, desiccation, and subsequent rehydration showed no signs of damage or severe oxidative stress compared to untreated control plants. Transcriptome analysis by next-generation sequencing revealed a drought-induced reprogramming, which redirected resources from growth towards cell protection. Repression of photosynthetic and growth-related genes during water deficiency was concomitant with induction of transcription factors (members of the NAC, NF-YA, MADS box, HSF, GRAS, and WRKY families) presumably acting as master switches of the genetic reprogramming, as well as with an upregulation of genes related to sugar metabolism, signaling, and genes encoding early light-inducible (ELIP), late embryogenesis abundant (LEA), and heat shock (HSP) proteins. At the same time, genes encoding other LEA, HSP, and stress protective proteins were constitutively expressed at high levels even in unstressed controls. Genes normally involved in tolerance to salinity, chilling, and pathogens were also highly induced, suggesting a possible cross-tolerance against a number of abiotic and biotic stress factors. A notable percentage of the genes highly regulated in dehydration and subsequent rehydration were novel, with no sequence homology to genes from other plant genomes. Additionally, an extensive antioxidant gene network was identified with several gene families possessing a greater number of antioxidant genes than most other species with sequenced genomes. Two of the transcripts most abundant during all conditions encoded catalases and five more catalases were induced in water-deficient samples. Using the pharmacological inhibitor 3-aminotriazole (AT) to compromise catalase activity resulted in increased sensitivity to desiccation. Metabolome analysis by GC or LC-MS revealed accumulation of sucrose, verbascose, spermidine, and γ-aminobutyric acid during drought, as well as particular secondary metabolites accumulating during rehydration. This observation, together with the complex antioxidant system and the constitutive expression of stress protective genes suggests that both constitutive and inducible mechanisms contribute to the extreme desiccation tolerance of H. rhodopensis.
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Affiliation(s)
- Tsanko S Gechev
- Department of Plant Physiology and Plant Molecular Biology, University of Plovdiv, 24 Tsar Assen Str., Plovdiv, 4000, Bulgaria.
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Hoehenwarter W, Thomas M, Nukarinen E, Egelhofer V, Röhrig H, Weckwerth W, Conrath U, Beckers GJM. Identification of novel in vivo MAP kinase substrates in Arabidopsis thaliana through use of tandem metal oxide affinity chromatography. Mol Cell Proteomics 2012; 12:369-80. [PMID: 23172892 PMCID: PMC3567860 DOI: 10.1074/mcp.m112.020560] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Mitogen-activated protein kinase (MPK) cascades are important for eukaryotic signal transduction. They convert extracellular stimuli (e.g. some hormones, growth factors, cytokines, microbe- or damage-associated molecular patterns) into intracellular responses while at the same time amplifying the transmitting signal. By doing so, they ensure proper performance, and eventually survival, of a given organism, for example in times of stress. MPK cascades function via reversible phosphorylation of cascade components MEKKs, MEKs, and MPKs. In plants the identity of most MPK substrates remained elusive until now. Here, we provide a robust and powerful approach to identify and quantify, with high selectivity, site-specific phosphorylation of MPK substrate candidates in the model plant Arabidopsis thaliana. Our approach represents a two-step chromatography combining phosphoprotein enrichment using Al(OH)(3)-based metal oxide affinity chromatography, tryptic digest of enriched phosphoproteins, and TiO(2)-based metal oxide affinity chromatography to enrich phosphopeptides from complex protein samples. When applied to transgenic conditional gain-of-function Arabidopsis plants supporting in planta activation of MPKs, the approach allows direct measurement and quantification ex vivo of site-specific phosphorylation of several reported and many yet unknown putative MPK substrates in just a single experiment.
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Affiliation(s)
- Wolfgang Hoehenwarter
- Department Molecular Systems Biology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
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Fíla J, Matros A, Radau S, Zahedi RP, Capková V, Mock HP, Honys D. Revealing phosphoproteins playing role in tobacco pollen activated in vitro. Proteomics 2012; 12:3229-50. [PMID: 22976843 DOI: 10.1002/pmic.201100318] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 08/07/2012] [Indexed: 01/09/2023]
Abstract
The transition between the quiescent mature and the metabolically active germinating pollen grain most probably involves changes in protein phosphorylation status, since phosphorylation has been implicated in the regulation of many cellular processes. Given that, only a minor proportion of cellular proteins are phosphorylated at any one time, and that phosphorylated and nonphosphorylated forms of many proteins can co-exist within a cell, the identification of phosphoproteins requires some prior enrichment from a crude protein extract. Here, we have used metal oxide/hydroxide affinity chromatography (MOAC) based on an aluminum hydroxide matrix for this purpose, and have generated a population of phosphoprotein candidates from both mature and in vitro activated tobacco pollen grains. Both electrophoretic and nonelectrophoretic methods, allied to MS, were applied to these extracts to identify a set of 139 phosphoprotein candidates. In vitro phosphorylation was also used to validate the spectrum of phosphoprotein candidates obtained by the MOAC phosphoprotein enrichment. Since only one phosphorylation site was detected by the above approach, titanium dioxide phosphopeptide enrichment of trypsinized mature pollen crude extract was performed as well. It resulted in a detection of additional 51 phosphorylation sites giving a total of 52 identified phosphosites in this set of 139 phosphoprotein candidates.
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Affiliation(s)
- Jan Fíla
- Laboratory of Pollen Biology, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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Gechev TS, Dinakar C, Benina M, Toneva V, Bartels D. Molecular mechanisms of desiccation tolerance in resurrection plants. Cell Mol Life Sci 2012; 69:3175-86. [PMID: 22833170 PMCID: PMC11114980 DOI: 10.1007/s00018-012-1088-0] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 07/09/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
Abstract
Resurrection plants are a small but diverse group of land plants characterized by their tolerance to extreme drought or desiccation. They have the unique ability to survive months to years without water, lose most of the free water in their vegetative tissues, fall into anabiosis, and, upon rewatering, quickly regain normal activity. Thus, they are fundamentally different from other drought-surviving plants such as succulents or ephemerals, which cope with drought by maintaining higher steady state water potential or via a short life cycle, respectively. This review describes the unique physiological and molecular adaptations of resurrection plants enabling them to withstand long periods of desiccation. The recent transcriptome analysis of Craterostigma plantagineum and Haberlea rhodopensis under drought, desiccation, and subsequent rehydration revealed common genetic pathways with other desiccation-tolerant species as well as unique genes that might contribute to the outstanding desiccation tolerance of the two resurrection species. While some of the molecular responses appear to be common for both drought stress and desiccation, resurrection plants also possess genes that are highly induced or repressed during desiccation with no apparent sequence homologies to genes of other species. Thus, resurrection plants are potential sources for gene discovery. Further proteome and metabolome analyses of the resurrection plants contributed to a better understanding of molecular mechanisms that are involved in surviving severe water loss. Understanding the cellular mechanisms of desiccation tolerance in this unique group of plants may enable future molecular improvement of drought tolerance in crop plants.
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Affiliation(s)
- Tsanko S Gechev
- Department of Plant Physiology and Plant Molecular Biology, University of Plovdiv, Bulgaria.
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Dinakar C, Bartels D. Light response, oxidative stress management and nucleic acid stability in closely related Linderniaceae species differing in desiccation tolerance. PLANTA 2012; 236:541-55. [PMID: 22437647 DOI: 10.1007/s00425-012-1628-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 03/08/2012] [Indexed: 05/21/2023]
Abstract
In the present study, three closely related Linderniaceae species which differ in their sensitivity to desiccation are compared in response to light and oxidative stress defence. Lindernia brevidens, a desiccation-tolerant plant, displayed intense purple pigmentation in leaves under long-day conditions in contrast to Craterostigma plantagineum (desiccation tolerant) and Lindernia subracemosa (desiccation sensitive). The intense pigmentation in leaves does not affect the desiccation tolerance behaviour but seems to be related to oxidative stress protection. Green leaves of short-day and purple leaves of long-day plants provided suitable material for comparing basic photosynthetic parameters. An increase in non-photochemical quenching in purple leaves appears to prevent photoinhibition. Treatment with methyl viologen decreased the photochemical activities in both long-day and short-day plants but long-day plants which accumulate anthocyanins maintained a higher non-photochemical quenching than short-day plants. No differences were seen in the expression of desiccation-induced proteins and proteins involved in carbohydrate metabolism in short-day and long-day grown plants, whereas differences were observed in the expression of transcripts encoding chloroplast-localised stress proteins and transcripts encoding antioxidant enzymes. While the expression of genes encoding antioxidant enzymes were either constitutive or up-regulated during desiccation in C. plantagineum, the expression was down-regulated in L. subracemosa. RNA expression analysis indicated degradation of mRNA during desiccation in L. subracemosa but not in desiccation tolerant species. These results indicate that a better oxidative stress management and mRNA stability are correlated with desiccation tolerance.
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Affiliation(s)
- Challabathula Dinakar
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, 53115, Bonn, Germany
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Molecular mechanisms of desiccation tolerance in resurrection plants. CELLULAR AND MOLECULAR LIFE SCIENCES : CMLS 2012. [PMID: 22833170 DOI: 10.1007/s00018‐012‐1088‐0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Resurrection plants are a small but diverse group of land plants characterized by their tolerance to extreme drought or desiccation. They have the unique ability to survive months to years without water, lose most of the free water in their vegetative tissues, fall into anabiosis, and, upon rewatering, quickly regain normal activity. Thus, they are fundamentally different from other drought-surviving plants such as succulents or ephemerals, which cope with drought by maintaining higher steady state water potential or via a short life cycle, respectively. This review describes the unique physiological and molecular adaptations of resurrection plants enabling them to withstand long periods of desiccation. The recent transcriptome analysis of Craterostigma plantagineum and Haberlea rhodopensis under drought, desiccation, and subsequent rehydration revealed common genetic pathways with other desiccation-tolerant species as well as unique genes that might contribute to the outstanding desiccation tolerance of the two resurrection species. While some of the molecular responses appear to be common for both drought stress and desiccation, resurrection plants also possess genes that are highly induced or repressed during desiccation with no apparent sequence homologies to genes of other species. Thus, resurrection plants are potential sources for gene discovery. Further proteome and metabolome analyses of the resurrection plants contributed to a better understanding of molecular mechanisms that are involved in surviving severe water loss. Understanding the cellular mechanisms of desiccation tolerance in this unique group of plants may enable future molecular improvement of drought tolerance in crop plants.
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Abdalla KO, Rafudeen MS. Analysis of the nuclear proteome of the resurrection plant Xerophyta viscosa in response to dehydration stress using iTRAQ with 2DLC and tandem mass spectrometry. J Proteomics 2012; 75:2361-74. [DOI: 10.1016/j.jprot.2012.02.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/31/2012] [Accepted: 02/04/2012] [Indexed: 10/28/2022]
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Fíla J, Honys D. Enrichment techniques employed in phosphoproteomics. Amino Acids 2011; 43:1025-47. [PMID: 22002794 PMCID: PMC3418503 DOI: 10.1007/s00726-011-1111-z] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 09/26/2011] [Indexed: 11/28/2022]
Abstract
Rapid changes of protein phosphorylation play a crucial role in the regulation of many cellular processes. Being post-translationally modified, phosphoproteins are often present in quite low abundance and tend to co-exist with their unphosphorylated isoform within the cell. To make their identification more practicable, the use of enrichment protocols is often required. The enrichment strategies can be performed either at the level of phosphoproteins or at the level of phosphopeptides. Both approaches have their advantages and disadvantages. Most enriching strategies are based on chemical modifications, affinity chromatography to capture peptides and proteins containing negatively charged phosphate groups onto a positively charged matrix, or immunoprecipitation by phospho-specific antibodies. In this article, the most up-to-date enrichment techniques are discussed, taking into account their optimization, and highlighting their advantages and disadvantages. Moreover, these methods are compared to each other, revealing their complementary nature in providing comprehensive coverage of the phosphoproteome.
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Affiliation(s)
- Jan Fíla
- Laboratory of Pollen Biology, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Rozvojová 263, Prague 6, Czech Republic
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21
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Response to biotic and oxidative stress in Arabidopsis thaliana: Analysis of variably phosphorylated proteins. J Proteomics 2011; 74:1934-49. [DOI: 10.1016/j.jprot.2011.05.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 04/29/2011] [Accepted: 05/09/2011] [Indexed: 12/11/2022]
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Remmerie N, De Vijlder T, Laukens K, Dang TH, Lemière F, Mertens I, Valkenborg D, Blust R, Witters E. Next generation functional proteomics in non-model plants: A survey on techniques and applications for the analysis of protein complexes and post-translational modifications. PHYTOCHEMISTRY 2011; 72:1192-218. [PMID: 21345472 DOI: 10.1016/j.phytochem.2011.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 11/21/2010] [Accepted: 01/03/2011] [Indexed: 05/11/2023]
Abstract
The congruent development of computational technology, bioinformatics and analytical instrumentation makes proteomics ready for the next leap. Present-day state of the art proteomics grew from a descriptive method towards a full stake holder in systems biology. High throughput and genome wide studies are now made at the functional level. These include quantitative aspects, functional aspects with respect to protein interactions as well as post translational modifications and advanced computational methods that aid in predicting protein function and mapping these functionalities across the species border. In this review an overview is given of the current status of these aspects in plant studies with special attention to non-genomic model plants.
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Affiliation(s)
- Noor Remmerie
- Center for Proteomics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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van den Dries N, Facchinelli F, Giarola V, Phillips JR, Bartels D. Comparative analysis of LEA-like 11-24 gene expression and regulation in related plant species within the Linderniaceae that differ in desiccation tolerance. THE NEW PHYTOLOGIST 2011; 190:75-88. [PMID: 21231934 DOI: 10.1111/j.1469-8137.2010.03595.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The resurrection plant Craterostigma plantagineum is able to withstand desiccation of its vegetative tissues and is found in areas with variable water availability. The closely related species Lindernia brevidens and Lindernia subracemosa are both endemic to montane rainforests of coastal Africa, but remarkably L. brevidens is tolerant to desiccation. We studied the regulation of the desiccation-related LEA-like 11-24 gene at multiple levels in closely related species in order to investigate the conservation of mechanisms involved in desiccation tolerance. The dehydration-responsive transcription of the LEA-like 11-24 gene is differentially regulated in these plants. Comparison of the LEA-like 11-24 core promoter regions revealed that promoters have different activities, but some functional cis-acting elements are conserved between species. Upon dehydration, LEA-like 11-24 proteins are phosphorylated at different levels and phosphorylation sites are not conserved among the three LEA-like 11-24 proteins. Differences in the regulation of the LEA-like 11-24 gene in the studied plant species appear to be the result of mutations that occurred during evolution. We postulate that L. brevidens will eventually lose the ability to survive vegetative desiccation, given that this trait appears not to be essential for survival.
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Affiliation(s)
- Niels van den Dries
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany
| | - Fabio Facchinelli
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany
| | - Valentino Giarola
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany
| | - Jonathan R Phillips
- 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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Abstract
The identification of phosphorylation on proteins has become practicable for many laboratories in recent years, largely due to improvements in mass spectrometry (MS) and the development of methods to selectively enrich for phosphorylated peptides and proteins. However, phosphorylation is a dynamic and reversible modification which plays a central role in many biological processes including intracellular signalling. Therefore, the quantitative analysis of phosphorylated proteins and peptides is a subject of intense interest. We discuss three applications of isobaric tags for relative and absolute quantitation (iTRAQ) to the analysis of phosphopeptides from a variety of sample materials.
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Understanding Vegetative Desiccation Tolerance Using Integrated Functional Genomics Approaches Within a Comparative Evolutionary Framework. PLANT DESICCATION TOLERANCE 2011. [DOI: 10.1007/978-3-642-19106-0_15] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Tunnacliffe A, Hincha DK, Leprince O, Macherel D. LEA Proteins: Versatility of Form and Function. DORMANCY AND RESISTANCE IN HARSH ENVIRONMENTS 2010. [DOI: 10.1007/978-3-642-12422-8_6] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Sghaier-Hammami B, Drira N, Jorrín-Novo JV. Comparative 2-DE proteomic analysis of date palm (Phoenix dactylifera L.) somatic and zygotic embryos. J Proteomics 2009; 73:161-77. [DOI: 10.1016/j.jprot.2009.07.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 07/02/2009] [Accepted: 07/09/2009] [Indexed: 11/30/2022]
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Proteomic analysis of the development and germination of date palm (Phoenix dactylifera L.) zygotic embryos. Proteomics 2009; 9:2543-54. [DOI: 10.1002/pmic.200800523] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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