401
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Wuyts N, Dhondt S, Inzé D. Measurement of plant growth in view of an integrative analysis of regulatory networks. CURRENT OPINION IN PLANT BIOLOGY 2015; 25:90-97. [PMID: 26002069 DOI: 10.1016/j.pbi.2015.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/17/2015] [Accepted: 05/01/2015] [Indexed: 05/29/2023]
Abstract
As the regulatory networks of growth at the cellular level are elucidated at a fast pace, their complexity is not reduced; on the contrary, the tissue, organ and even whole-plant level affect cell proliferation and expansion by means of development-induced and environment-induced signaling events in growth regulatory processes. Measurement of growth across different levels aids in gaining a mechanistic understanding of growth, and in defining the spatial and temporal resolution of sampling strategies for molecular analyses in the model Arabidopsis thaliana and increasingly also in crop species. The latter claim their place at the forefront of plant research, since global issues and future needs drive the translation from laboratory model-acquired knowledge of growth processes to improvements in crop productivity in field conditions.
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Affiliation(s)
- Nathalie Wuyts
- Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Gent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Gent, Belgium
| | - Stijn Dhondt
- Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Gent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Gent, Belgium
| | - Dirk Inzé
- Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Gent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Gent, Belgium.
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402
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Abstract
Gravitropic signaling is a complex process that requires the coordinated action of multiple cell types and tissues. Ca(2+) and pH signaling are key components of gravitropic signaling cascades and can serve as useful markers to dissect the molecular machinery mediating plant gravitropism. To monitor dynamic ion signaling, imaging approaches combining fluorescent ion sensors and confocal fluorescence microscopy are employed, which allow the visualization of pH and Ca(2+) changes at the level of entire tissues, while also providing high spatiotemporal resolution. Here, I describe procedures to prepare Arabidopsis seedlings for live cell imaging and to convert a microscope for vertical stage fluorescence microscopy. With this imaging system, ion signaling can be monitored during all phases of the root gravitropic response.
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Affiliation(s)
- Gabriele B Monshausen
- Biology Department, 208 Mueller Lab, Pennsylvania State University, University Park, PA, 16802, USA,
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403
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Ruas M, Davis LC, Chen CC, Morgan AJ, Chuang KT, Walseth TF, Grimm C, Garnham C, Powell T, Platt N, Platt FM, Biel M, Wahl-Schott C, Parrington J, Galione A. Expression of Ca²⁺-permeable two-pore channels rescues NAADP signalling in TPC-deficient cells. EMBO J 2015; 34:1743-58. [PMID: 25872774 PMCID: PMC4516428 DOI: 10.15252/embj.201490009] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 03/11/2015] [Indexed: 01/26/2023] Open
Abstract
The second messenger NAADP triggers Ca2+ release from endo-lysosomes. Although two-pore channels (TPCs) have been proposed to be regulated by NAADP, recent studies have challenged this. By generating the first mouse line with demonstrable absence of both Tpcn1 and Tpcn2 expression (Tpcn1/2−/−), we show that the loss of endogenous TPCs abolished NAADP-dependent Ca2+ responses as assessed by single-cell Ca2+ imaging or patch-clamp of single endo-lysosomes. In contrast, currents stimulated by PI(3,5)P2 were only partially dependent on TPCs. In Tpcn1/2−/− cells, NAADP sensitivity was restored by re-expressing wild-type TPCs, but not by mutant versions with impaired Ca2+-permeability, nor by TRPML1. Another mouse line formerly reported as TPC-null likely expresses truncated TPCs, but we now show that these truncated proteins still support NAADP-induced Ca2+ release. High-affinity [32P]NAADP binding still occurs in Tpcn1/2−/− tissue, suggesting that NAADP regulation is conferred by an accessory protein. Altogether, our data establish TPCs as Ca2+-permeable channels indispensable for NAADP signalling.
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Affiliation(s)
- Margarida Ruas
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Lianne C Davis
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Cheng-Chang Chen
- Center for Integrated Protein Science CIPS-M and Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, München, Germany
| | | | - Kai-Ting Chuang
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Timothy F Walseth
- Pharmacology Department, University of Minnesota, Minneapolis, MN, USA
| | - Christian Grimm
- Center for Integrated Protein Science CIPS-M and Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, München, Germany
| | - Clive Garnham
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Trevor Powell
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Nick Platt
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Frances M Platt
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Martin Biel
- Center for Integrated Protein Science CIPS-M and Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, München, Germany
| | - Christian Wahl-Schott
- Center for Integrated Protein Science CIPS-M and Department of Pharmacy - Center for Drug Research, Ludwig-Maximilians-Universität München, München, Germany
| | - John Parrington
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Antony Galione
- Department of Pharmacology, University of Oxford, Oxford, UK
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404
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Krämer U. Planting molecular functions in an ecological context with Arabidopsis thaliana. eLife 2015; 4:e06100. [PMID: 25807084 PMCID: PMC4373673 DOI: 10.7554/elife.06100] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/13/2015] [Indexed: 12/31/2022] Open
Abstract
The vascular plant Arabidopsis thaliana is a central genetic model and universal reference organism in plant and crop science. The successful integration of different fields of research in the study of A. thaliana has made a large contribution to our molecular understanding of key concepts in biology. The availability and active development of experimental tools and resources, in combination with the accessibility of a wealth of cumulatively acquired knowledge about this plant, support the most advanced systems biology approaches among all land plants. Research in molecular ecology and evolution has also brought the natural history of A. thaliana into the limelight. This article showcases our current knowledge of the natural history of A. thaliana from the perspective of the most closely related plant species, providing an evolutionary framework for interpreting novel findings and for developing new hypotheses based on our knowledge of this plant.
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Affiliation(s)
- Ute Krämer
- Department of Plant Physiology, Ruhr University Bochum, Bochum, Germany
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405
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Xu H, Martinoia E, Szabo I. Organellar channels and transporters. Cell Calcium 2015; 58:1-10. [PMID: 25795199 DOI: 10.1016/j.ceca.2015.02.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 02/20/2015] [Indexed: 12/22/2022]
Abstract
Decades of intensive research have led to the discovery of most plasma membrane ion channels and transporters and the characterization of their physiological functions. In contrast, although over 80% of transport processes occur inside the cells, the ion flux mechanisms across intracellular membranes (the endoplasmic reticulum, Golgi apparatus, endosomes, lysosomes, mitochondria, chloroplasts, and vacuoles) are difficult to investigate and remain poorly understood. Recent technical advances in super-resolution microscopy, organellar electrophysiology, organelle-targeted fluorescence imaging, and organelle proteomics have pushed a large step forward in the research of intracellular ion transport. Many new organellar channels are molecularly identified and electrophysiologically characterized. Additionally, molecular identification of many of these ion channels/transporters has made it possible to study their physiological functions by genetic and pharmacological means. For example, organellar channels have been shown to regulate important cellular processes such as programmed cell death and photosynthesis, and are involved in many different pathologies. This special issue (SI) on organellar channels and transporters aims to provide a forum to discuss the recent advances and to define the standard and open questions in this exciting and rapidly developing field. Along this line, a new Gordon Research Conference dedicated to the multidisciplinary study of intracellular membrane transport proteins will be launched this coming summer.
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Affiliation(s)
- Haoxing Xu
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, 3089 Natural Science Building (Kraus), 830 North University Avenue, Ann Arbor, MI 48109-1048, USA.
| | - Enrico Martinoia
- Institute of Plant Biology, University of Zürich, Zollikerstr. 107, CH-8008 Zürich, Switzerland.
| | - Ildiko Szabo
- Department of Biology, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy; CNR Neuroscience Institute, Viale G. Colombo 3, 35121 Padova, Italy.
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406
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Costa A, Kudla J. Colorful insights: advances in imaging drive novel breakthroughs in Ca2+ signaling. MOLECULAR PLANT 2015; 8:352-355. [PMID: 25655824 DOI: 10.1016/j.molp.2014.11.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/05/2014] [Accepted: 11/26/2014] [Indexed: 06/04/2023]
Affiliation(s)
- Alex Costa
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via G. Celoria 26, 20133 Milan, Italy; Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via G. Celoria 26, 20133 Milan, Italy.
| | - Jörg Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 4, 48149 Münster, Germany.
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407
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Matschi S, Hake K, Herde M, Hause B, Romeis T. The calcium-dependent protein kinase CPK28 regulates development by inducing growth phase-specific, spatially restricted alterations in jasmonic acid levels independent of defense responses in Arabidopsis. THE PLANT CELL 2015; 27:591-606. [PMID: 25736059 PMCID: PMC4558673 DOI: 10.1105/tpc.15.00024] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 01/10/2015] [Accepted: 02/16/2015] [Indexed: 05/18/2023]
Abstract
Phytohormones play an important role in development and stress adaptations in plants, and several interacting hormonal pathways have been suggested to accomplish fine-tuning of stress responses at the expense of growth. This work describes the role played by the CALCIUM-DEPENDENT PROTEIN KINASE CPK28 in balancing phytohormone-mediated development in Arabidopsis thaliana, specifically during generative growth. cpk28 mutants exhibit growth reduction solely as adult plants, coinciding with altered balance of the phytohormones jasmonic acid (JA) and gibberellic acid (GA). JA-dependent gene expression and the levels of several JA metabolites were elevated in a growth phase-dependent manner in cpk28, and accumulation of JA metabolites was confined locally to the central rosette tissue. No elevated resistance toward herbivores or necrotrophic pathogens was detected for cpk28 plants, either on the whole-plant level or specifically within the tissue displaying elevated JA levels. Abolishment of JA biosynthesis or JA signaling led to a full reversion of the cpk28 growth phenotype, while modification of GA signaling did not. Our data identify CPK28 as a growth phase-dependent key negative regulator of distinct processes: While in seedlings, CPK28 regulates reactive oxygen species-mediated defense signaling; in adult plants, CPK28 confers developmental processes by the tissue-specific balance of JA and GA without affecting JA-mediated defense responses.
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Affiliation(s)
- Susanne Matschi
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, 14195 Berlin, Germany
| | - Katharina Hake
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, 14195 Berlin, Germany
| | - Marco Herde
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, 14195 Berlin, Germany
| | - Bettina Hause
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Tina Romeis
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, 14195 Berlin, Germany
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408
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Evolution of acidic Ca2+ stores and their resident Ca2+-permeable channels. Cell Calcium 2015; 57:222-30. [DOI: 10.1016/j.ceca.2014.12.005] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 11/18/2022]
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409
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Schmöckel SM, Garcia AF, Berger B, Tester M, Webb AAR, Roy SJ. Different NaCl-induced calcium signatures in the Arabidopsis thaliana ecotypes Col-0 and C24. PLoS One 2015; 10:e0117564. [PMID: 25723668 PMCID: PMC4344247 DOI: 10.1371/journal.pone.0117564] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Accepted: 12/27/2014] [Indexed: 01/14/2023] Open
Abstract
A common feature of stress signalling pathways are alterations in the concentration of cytosolic free calcium ([Ca2+]cyt), which allow the specific and rapid transmission of stress signals through a plant after exposure to a stress, such as salinity. Here, we used an aequorin based bioluminescence assay to compare the NaCl-induced changes in [Ca2+]cyt of the Arabidopsis ecotypes Col-0 and C24. We show that C24 lacks the NaCl specific component of the [Ca2+]cyt signature compared to Col-0. This phenotypic variation could be exploited as a screening methodology for the identification of yet unknown components in the early stages of the salt signalling pathway.
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Affiliation(s)
- Sandra M. Schmöckel
- Australian Centre for Plant Functional Genomics and The University of Adelaide, Adelaide, Australia
- Centre for Desert Agriculture, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal Saudi Arabia
| | - Alexandre F. Garcia
- Australian Centre for Plant Functional Genomics and The University of Adelaide, Adelaide, Australia
- The Plant Accelerator, Australian Plant Phenomics Facility and The University of Adelaide, Adelaide, Australia
| | - Bettina Berger
- The Plant Accelerator, Australian Plant Phenomics Facility and The University of Adelaide, Adelaide, Australia
| | - Mark Tester
- Centre for Desert Agriculture, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal Saudi Arabia
| | - Alex A. R. Webb
- Department of Plant Sciences, The University of Cambridge, Cambridge, United Kingdom
| | - Stuart J. Roy
- Australian Centre for Plant Functional Genomics and The University of Adelaide, Adelaide, Australia
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410
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Calcium is an organizer of cell polarity in plants. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:2168-72. [PMID: 25725133 DOI: 10.1016/j.bbamcr.2015.02.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/05/2015] [Accepted: 02/17/2015] [Indexed: 01/07/2023]
Abstract
Cell polarity is a fundamental property of pro- and eukaryotic cells. It is necessary for coordination of cell division, cell morphogenesis and signaling processes. How polarity is generated and maintained is a complex issue governed by interconnected feed-back regulations between small GTPase signaling and membrane tension-based signaling that controls membrane trafficking, and cytoskeleton organization and dynamics. Here, we will review the potential role for calcium as a crucial signal that connects and coordinates the respective processes during polarization processes in plants. This article is part of a Special Issue entitled: 13th European Symposium on Calcium.
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411
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Tonoplast CBL-CIPK calcium signaling network regulates magnesium homeostasis in Arabidopsis. Proc Natl Acad Sci U S A 2015; 112:3134-9. [PMID: 25646412 DOI: 10.1073/pnas.1420944112] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Although Mg(2+) is essential for a myriad of cellular processes, high levels of Mg(2+) in the environment, such as those found in serpentine soils, become toxic to plants. In this study, we identified two calcineurin B-like (CBL) proteins, CBL2 and CBL3, as key regulators for plant growth under high-Mg conditions. The Arabidopsis mutant lacking both CBL2 and CBL3 displayed severe growth retardation in the presence of excess Mg(2+), implying elevated Mg(2+) toxicity in these plants. Unexpectedly, the cbl2 cbl3 mutant plants retained lower Mg content than wild-type plants under either normal or high-Mg conditions, suggesting that CBL2 and CBL3 may be required for vacuolar Mg(2+) sequestration. Indeed, patch-clamp analysis showed that the cbl2 cbl3 mutant exhibited reduced Mg(2+) influx into the vacuole. We further identified four CBL-interacting protein kinases (CIPKs), CIPK3, -9, -23, and -26, as functionally overlapping components downstream of CBL2/3 in the signaling pathway that facilitates Mg(2+) homeostasis. The cipk3 cipk9 cipk23 cipk26 quadruple mutant, like the cbl2 cbl3 double mutant, was hypersensitive to high-Mg conditions; furthermore, CIPK3/9/23/26 physically interacted with CBL2/3 at the vacuolar membrane. Our results thus provide evidence that CBL2/3 and CIPK3/9/23/26 constitute a multivalent interacting network that regulates the vacuolar sequestration of Mg(2+), thereby protecting plants from Mg(2+) toxicity.
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412
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Dinneny JR. Traversing organizational scales in plant salt-stress responses. CURRENT OPINION IN PLANT BIOLOGY 2015; 23:70-5. [PMID: 25449729 DOI: 10.1016/j.pbi.2014.10.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/15/2014] [Accepted: 10/17/2014] [Indexed: 05/07/2023]
Abstract
Modern society has developed in large part due to our ability to reliably grow plants for food and renewable resources. Predicted increases in environmental variability will impact agricultural productivity and may have extensive secondary effects on the stability of our society. Thus, a concerted effort to understand plant response strategies to stress is needed. High salinity is an agriculturally important environmental stress and generates complex effects on the physiology of the plant. The abiotic-stress-associated hormone, abscisic acid (ABA), mediates a major component of this response. I highlight recent work studying salt-stress responses at different spatial and organizational scales from the action of ABA in specific cell types to global networks of proteins that predict critical regulatory events during acclimation.
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413
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Bazihizina N, Redwan M, Taiti C, Giordano C, Monetti E, Masi E, Azzarello E, Mancuso S. Root based responses account for Psidium guajava survival at high nickel concentration. JOURNAL OF PLANT PHYSIOLOGY 2015; 174:137-146. [PMID: 25462976 DOI: 10.1016/j.jplph.2014.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
The presence of Psidium guajava in polluted environments has been reported in recent studies, suggesting that this species has a high tolerance to the metal stress. The present study aims at a physiological characterization of P. guajava response to high nickel (Ni) concentrations in the root-zone. Three hydroponic experiments were carried out to characterize the effects of toxic Ni concentrations on morphological and physiological parameters of P. guajava, focusing on Ni-induced damages at the root-level and root ion fluxes. With up to 300μM NiSO4 in the root-zone, plant growth was similar to that in control plants, whereas at concentrations higher than 1000μM NiSO4 there was a progressive decline in plant growth and leaf gas exchange parameters; this occurred despite, at all considered concentrations, plants limited Ni(2+) translocation to the shoot, therefore avoiding shoot Ni(2+) toxicity symptoms. Maintenance of plant growth with 300μM Ni(2+) was associated with the ability to retain K(+) in the roots meanwhile 1000 and 3000μM NiSO4 led to substantial K(+) losses. In this study, root responses mirror all plant performances suggesting a direct link between root functionality and Ni(2+) tolerance mechanisms and plant survival. Considering that Ni was mainly accumulated in the root system, the potential use of P. guajava for Ni(2+) phytoextraction in metal-polluted soils is limited; nevertheless, the observed physiological changes indicate a good Ni(2+) tolerance up to 300μM NiSO4 suggesting a potential role for the phytostabilization of polluted soils.
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Affiliation(s)
- Nadia Bazihizina
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Mirvat Redwan
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Cosimo Taiti
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Cristiana Giordano
- Centro di Microscopie Elettroniche "Laura Bonzi" (Ce.M.E.), ICCOM, CNR, Via Madonna del Piano, 50019 Sesto F.no, Florence, Italy
| | - Emanuela Monetti
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Elisa Masi
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Elisa Azzarello
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy.
| | - Stefano Mancuso
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
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414
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Stael S, Kmiecik P, Willems P, Van Der Kelen K, Coll NS, Teige M, Van Breusegem F. Plant innate immunity--sunny side up? TRENDS IN PLANT SCIENCE 2015; 20:3-11. [PMID: 25457110 PMCID: PMC4817832 DOI: 10.1016/j.tplants.2014.10.002] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 09/17/2014] [Accepted: 10/02/2014] [Indexed: 05/03/2023]
Abstract
Reactive oxygen species (ROS)- and calcium- dependent signaling pathways play well-established roles during plant innate immunity. Chloroplasts host major biosynthetic pathways and have central roles in energy production, redox homeostasis, and retrograde signaling. However, the organelle's importance in immunity has been somehow overlooked. Recent findings suggest that the chloroplast also has an unanticipated function as a hub for ROS- and calcium-signaling that affects immunity responses at an early stage after pathogen attack. In this opinion article, we discuss a chloroplastic calcium-ROS signaling branch of plant innate immunity. We propose that this chloroplastic branch acts as a light-dependent rheostat that, through the production of ROS, influences the severity of the immune response.
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Affiliation(s)
- Simon Stael
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; Department of Medical Protein Research, VIB, 9000 Ghent, Belgium; Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Przemyslaw Kmiecik
- Department of Ecogenomics and Systems Biology, Vienna University, Vienna, Austria
| | - Patrick Willems
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; Department of Medical Protein Research, VIB, 9000 Ghent, Belgium; Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Katrien Van Der Kelen
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Nuria S Coll
- Department of Molecular Genetics, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB Consortium, 08193 Barcelona, Spain
| | - Markus Teige
- Department of Ecogenomics and Systems Biology, Vienna University, Vienna, Austria; Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Frank Van Breusegem
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium.
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415
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Mittler R, Blumwald E. The roles of ROS and ABA in systemic acquired acclimation. THE PLANT CELL 2015; 27:64-70. [PMID: 25604442 PMCID: PMC4330577 DOI: 10.1105/tpc.114.133090] [Citation(s) in RCA: 303] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/02/2014] [Accepted: 12/26/2014] [Indexed: 05/18/2023]
Abstract
Systemic responses to environmental stimuli are essential for the survival of multicellular organisms. In plants, they are initiated in response to many different signals including pathogens, wounding, and abiotic stresses. Recent studies highlighted the importance of systemic acquired acclimation to abiotic stresses in plants and identified several different signals involved in this response. These included reactive oxygen species (ROS) and calcium waves, hydraulic waves, electric signals, and abscisic acid (ABA). Here, we address the interactions between ROS and ABA at the local and systemic tissues of plants subjected to abiotic stress and attempt to propose a model for the involvement of ROS, ABA, and stomata in systemic signaling leading to systemic acquired acclimation.
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Affiliation(s)
- Ron Mittler
- Department of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California, Davis, California 95616-5270
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416
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Yue R, Lu C, Sun T, Peng T, Han X, Qi J, Yan S, Tie S. Identification and expression profiling analysis of calmodulin-binding transcription activator genes in maize (Zea mays L.) under abiotic and biotic stresses. FRONTIERS IN PLANT SCIENCE 2015; 6:576. [PMID: 26284092 PMCID: PMC4516887 DOI: 10.3389/fpls.2015.00576] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 07/13/2015] [Indexed: 05/20/2023]
Abstract
The calmodulin-binding transcription activators (CAMTA) play critical roles in plant growth and responses to environmental stimuli. However, how CAMTAs function in responses to abiotic and biotic stresses in maize (Zea mays L.) is largely unknown. In this study, we first identified all the CAMTA homologous genes in the whole genome of maize. The results showed that nine ZmCAMTA genes showed highly diversified gene structures and tissue-specific expression patterns. Many ZmCAMTA genes displayed high expression levels in the roots. We then surveyed the distribution of stress-related cis-regulatory elements in the -1.5 kb promoter regions of ZmCAMTA genes. Notably, a large number of stress-related elements present in the promoter regions of some ZmCAMTA genes, indicating a genetic basis of stress expression regulation of these genes. Quantitative real-time PCR was used to test the expression of ZmCAMTA genes under several abiotic stresses (drought, salt, and cold), various stress-related hormones [abscisic acid, auxin, salicylic acid (SA), and jasmonic acid] and biotic stress [rice black-streaked dwarf virus (RBSDV) infection]. Furthermore, the expression pattern of ZmCAMTA genes under RBSDV infection was analyzed to investigate their potential roles in responses of different maize cultivated varieties to RBSDV. The expression of most ZmCAMTA genes responded to both abiotic and biotic stresses. The data will help us to understand the roles of CAMTA-mediated Ca(2+) signaling in maize tolerance to environmental stresses.
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Affiliation(s)
- Runqing Yue
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
| | - Caixia Lu
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
| | - Tao Sun
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Tingting Peng
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Xiaohua Han
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
| | - Jianshuang Qi
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
| | - Shufeng Yan
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
| | - Shuanggui Tie
- Henan Academy of Agricultural SciencesZhengzhou, China
- The Henan Provincial Key Lab. of Maize BiologyZhengzhou, China
- *Correspondence: Shuanggui Tie, Henan Academy of Agricultural Sciences, 116# Huayuan Road, Zhengzhou 450002, China
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417
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Kurusu T, Kuchitsu K, Tada Y. Plant signaling networks involving Ca(2+) and Rboh/Nox-mediated ROS production under salinity stress. FRONTIERS IN PLANT SCIENCE 2015; 6:427. [PMID: 26113854 PMCID: PMC4461821 DOI: 10.3389/fpls.2015.00427] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/26/2015] [Indexed: 05/02/2023]
Abstract
Salinity stress, which induces both ionic and osmotic damage, impairs plant growth and causes severe reductions in crop yield. Plants are equipped with defense responses against salinity stress such as regulation of ion transport including Na(+) and K(+), accumulation of compatible solutes and stress-related gene expression. The initial Ca(2+) influx mediated by plasma membrane ion channels has been suggested to be crucial for the adaptive signaling. NADPH oxidase (Nox)-mediated production of reactive oxygen species (ROS) has also been suggested to play crucial roles in regulating adaptation to salinity stress in several plant species including halophytes. Respiratory burst oxidase homolog (Rboh) proteins show the ROS-producing Nox activity, which are synergistically activated by the binding of Ca(2+) to EF-hand motifs as well as Ca(2+)-dependent phosphorylation. We herein review molecular identity, structural features and roles of the Ca(2+)-permeable channels involved in early salinity and osmotic signaling, and comparatively discuss the interrelationships among spatiotemporal dynamic changes in cytosolic concentrations of free Ca(2+), Rboh-mediated ROS production, and downstream signaling events during salinity adaptation in planta.
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Affiliation(s)
- Takamitsu Kurusu
- School of Bioscience and Biotechnology, Tokyo University of TechnologyHachioji, Japan
- Department of Applied Biological Science, Tokyo University of ScienceNoda, Japan
- Research Institute for Science and Technology, Tokyo University of ScienceNoda, Japan
- *Correspondence: Takamitsu Kurusu, School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of ScienceNoda, Japan
- Research Institute for Science and Technology, Tokyo University of ScienceNoda, Japan
| | - Yuichi Tada
- School of Bioscience and Biotechnology, Tokyo University of TechnologyHachioji, Japan
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418
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Notaguchi M, Okamoto S. Dynamics of long-distance signaling via plant vascular tissues. FRONTIERS IN PLANT SCIENCE 2015; 6:161. [PMID: 25852714 PMCID: PMC4364159 DOI: 10.3389/fpls.2015.00161] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 03/01/2015] [Indexed: 05/18/2023]
Abstract
Plant vascular systems are constructed by specific cell wall modifications through which cells are highly specialized to make conduits for water and nutrients. Xylem vessels are formed by thickened cell walls that remain after programmed cell death, and serve as water conduits from the root to the shoot. In contrast, phloem tissues consist of a complex of living cells, including sieve tube elements and their neighboring companion cells, and translocate photosynthetic assimilates from mature leaves to developing young tissues. Intensive studies on the content of vascular flow fluids have unveiled that plant vascular tissues transport various types of gene product, and the transport of some provides the molecular basis for the long-distance communications. Analysis of xylem sap has demonstrated the presence of proteins in the xylem transpiration stream. Recent studies have revealed that CLE and CEP peptides secreted in the roots are transported to above ground via the xylem in response to plant-microbe interaction and soil nitrogen starvation, respectively. Their leucine-rich repeat transmembrane receptors localized in the shoot phloem are required for relaying the signal from the shoot to the root. These findings well-fit to the current scenario of root-to-shoot-to-root feedback signaling, where peptide transport achieves the root-to-shoot signaling, the first half of the signaling process. Meanwhile, it is now well-evidenced that proteins and a range of RNAs are transported via the phloem translocation system, and some of those can exert their physiological functions at their destinations, including roots. Thus, plant vascular systems may serve not only as conduits for the translocation of essential substances but also as long-distance communication pathways that allow plants to adapt to changes in internal and external environments at the whole plant level.
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Affiliation(s)
- Michitaka Notaguchi
- Graduate School of Science, Nagoya University, NagoyaJapan
- ERATO Higashiyama Live-Holonics Project, NagoyaJapan
- *Correspondence: Michitaka Notaguchi and Satoru Okamoto, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan ;
| | - Satoru Okamoto
- Graduate School of Science, Nagoya University, NagoyaJapan
- Research Fellow of the Japan Society for the Promotion of Science, TokyoJapan
- *Correspondence: Michitaka Notaguchi and Satoru Okamoto, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan ;
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419
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Seybold H, Trempel F, Ranf S, Scheel D, Romeis T, Lee J. Ca2+ signalling in plant immune response: from pattern recognition receptors to Ca2+ decoding mechanisms. THE NEW PHYTOLOGIST 2014; 204:782-90. [PMID: 25539002 DOI: 10.1111/nph.13031] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Ca2+ is a ubiquitous second messenger for cellular signalling in various stresses and developmental processes. Here, we summarize current developments in the roles of Ca2+ during plant immunity responses. We discuss the early perception events preceding and necessary for triggering cellular Ca2+ fluxes, the potential Ca2+-permeable channels, the decoding of Ca2+ signals predominantly via Ca2+-dependent phosphorylation events and transcriptional reprogramming. To highlight the complexity of the cellular signal network, we briefly touch on the interplay between Ca2+-dependent signalling and selected major signalling mechanisms--with special emphasis on reactive oxygen species at local and systemic levels.
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420
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Steinhorst L, Kudla J. Signaling in cells and organisms - calcium holds the line. CURRENT OPINION IN PLANT BIOLOGY 2014; 22:14-21. [PMID: 25195171 DOI: 10.1016/j.pbi.2014.08.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 08/15/2014] [Accepted: 08/16/2014] [Indexed: 05/22/2023]
Abstract
Previous research has established calcium (Ca(2+)) and reactive oxygen species (ROS) as important cellular second messengers in eukaryotes. Recently, the occurrence of cell-to-cell moving Ca(2+) and ROS waves was reported in plants. This was paralleled by the discovery of long-distance wound-activated surface potential changes (WASPs) that require the function of putatively Ca(2+)-releasing glutamate receptor-like channels (GLRs) in Arabidopsis. Although the functional interconnection of Ca(2+)-dependent phosphorylation and ROS waves via NADPH oxidase activation has been clearly established, potential further interconnections between these long-distance signaling processes are less clear. In this review we cover emerging concepts and existing open questions that interconnect cellular and global signaling via Ca(2+), ROS and WASPs.
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Affiliation(s)
- Leonie Steinhorst
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 4, 48149 Münster, Germany
| | - Jörg Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 4, 48149 Münster, Germany.
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421
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422
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Galione A. A primer of NAADP-mediated Ca(2+) signalling: From sea urchin eggs to mammalian cells. Cell Calcium 2014; 58:27-47. [PMID: 25449298 DOI: 10.1016/j.ceca.2014.09.010] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 09/28/2014] [Accepted: 09/29/2014] [Indexed: 02/04/2023]
Abstract
Since the discovery of the Ca(2+) mobilizing effects of the pyridine nucleotide metabolite, nicotinic acid adenine dinucleotide phosphate (NAADP), this molecule has been demonstrated to function as a Ca(2+) mobilizing intracellular messenger in a wide range of cell types. In this review, I will briefly summarize the distinct principles behind NAADP-mediated Ca(2+) signalling before going on to outline the role of this messenger in the physiology of specific cell types. Central to the discussion here is the finding that NAADP principally mobilizes Ca(2+) from acidic organelles such as lysosomes and it is this property that allows NAADP to play a unique role in intracellular Ca(2+) signalling. Lysosomes and related organelles are small Ca(2+) stores but importantly may also initiate a two-way dialogue with other Ca(2+) storage organelles to amplify Ca(2+) release, and may be strategically localized to influence localized Ca(2+) signalling microdomains. The study of NAADP signalling has created a new and fruitful focus on the lysosome and endolysosomal system as major players in calcium signalling and pathophysiology.
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Affiliation(s)
- Antony Galione
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK.
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423
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Robbins NE, Trontin C, Duan L, Dinneny JR. Beyond the barrier: communication in the root through the endodermis. PLANT PHYSIOLOGY 2014; 166:551-9. [PMID: 25125504 PMCID: PMC4213087 DOI: 10.1104/pp.114.244871] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The root endodermis is characterized by the Casparian strip and by the suberin lamellae, two hydrophobic barriers that restrict the free diffusion of molecules between the inner cell layers of the root and the outer environment. The presence of these barriers and the position of the endodermis between the inner and outer parts of the root require that communication between these two domains acts through the endodermis. Recent work on hormone signaling, propagation of calcium waves, and plant-fungal symbiosis has provided evidence in support of the hypothesis that the endodermis acts as a signaling center. The endodermis is also a unique mechanical barrier to organogenesis, which must be overcome through chemical and mechanical cross talk between cell layers to allow for development of new lateral organs while maintaining its barrier functions. In this review, we discuss recent findings regarding these two important aspects of the endodermis.
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Affiliation(s)
- Neil E Robbins
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305 (N.E.R., C.T., L.D., J.R.D.); andDepartment of Biology, Stanford University, Stanford, California 94305 (N.E.R.)
| | - Charlotte Trontin
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305 (N.E.R., C.T., L.D., J.R.D.); andDepartment of Biology, Stanford University, Stanford, California 94305 (N.E.R.)
| | - Lina Duan
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305 (N.E.R., C.T., L.D., J.R.D.); andDepartment of Biology, Stanford University, Stanford, California 94305 (N.E.R.)
| | - José R Dinneny
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305 (N.E.R., C.T., L.D., J.R.D.); andDepartment of Biology, Stanford University, Stanford, California 94305 (N.E.R.)
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424
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Gilroy S, Suzuki N, Miller G, Choi WG, Toyota M, Devireddy AR, Mittler R. A tidal wave of signals: calcium and ROS at the forefront of rapid systemic signaling. TRENDS IN PLANT SCIENCE 2014; 19:623-30. [PMID: 25088679 DOI: 10.1016/j.tplants.2014.06.013] [Citation(s) in RCA: 266] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 06/16/2014] [Accepted: 06/29/2014] [Indexed: 05/03/2023]
Abstract
Systemic signaling pathways enable multicellular organisms to prepare all of their tissues and cells to an upcoming challenge that may initially only be sensed by a few local cells. They are activated in plants in response to different stimuli including mechanical injury, pathogen infection, and abiotic stresses. Key to the mobilization of systemic signals in higher plants are cell-to-cell communication events that have thus far been mostly unstudied. The recent identification of systemically propagating calcium (Ca(2+)) and reactive oxygen species (ROS) waves in plants has unraveled a new and exciting cell-to-cell communication pathway that, together with electric signals, could provide a working model demonstrating how plant cells transmit long-distance signals via cell-to-cell communication mechanisms. Here, we summarize recent findings on the ROS and Ca(2+) waves and outline a possible model for their integration.
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Affiliation(s)
- Simon Gilroy
- Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, USA
| | - Nobuhiro Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, 102-8554 Tokyo, Japan
| | - Gad Miller
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Life Sciences Building (204) Room 211, Ramat-Gan, 5290002 Israel
| | - Won-Gyu Choi
- Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, USA
| | - Masatsugu Toyota
- Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, USA; PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Amith R Devireddy
- Department of Biological Sciences, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA
| | - Ron Mittler
- Department of Biological Sciences, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA.
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425
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Campo S, Baldrich P, Messeguer J, Lalanne E, Coca M, San Segundo B. Overexpression of a Calcium-Dependent Protein Kinase Confers Salt and Drought Tolerance in Rice by Preventing Membrane Lipid Peroxidation. PLANT PHYSIOLOGY 2014; 165:688-704. [PMID: 24784760 PMCID: PMC4044838 DOI: 10.1104/pp.113.230268] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 05/01/2014] [Indexed: 05/18/2023]
Abstract
The OsCPK4 gene is a member of the complex gene family of calcium-dependent protein kinases in rice (Oryza sativa). Here, we report that OsCPK4 expression is induced by high salinity, drought, and the phytohormone abscisic acid. Moreover, a plasma membrane localization of OsCPK4 was observed by transient expression assays of green fluorescent protein-tagged OsCPK4 in onion (Allium cepa) epidermal cells. Overexpression of OsCPK4 in rice plants significantly enhances tolerance to salt and drought stress. Knockdown rice plants, however, are severely impaired in growth and development. Compared with control plants, OsCPK4 overexpressor plants exhibit stronger water-holding capability and reduced levels of membrane lipid peroxidation and electrolyte leakage under drought or salt stress conditions. Also, salt-treated OsCPK4 seedlings accumulate less Na+ in their roots. We carried out microarray analysis of transgenic rice overexpressing OsCPK4 and found that overexpression of OsCPK4 has a low impact on the rice transcriptome. Moreover, no genes were found to be commonly regulated by OsCPK4 in roots and leaves of rice plants. A significant number of genes involved in lipid metabolism and protection against oxidative stress appear to be up-regulated by OsCPK4 in roots of overexpressor plants. Meanwhile, OsCPK4 overexpression has no effect on the expression of well-characterized abiotic stress-associated transcriptional regulatory networks (i.e. ORYZA SATIVA DEHYDRATION-RESPONSIVE ELEMENT BINDING PROTEIN1 and ORYZA SATIVA No Apical Meristem, Arabidopsis Transcription Activation Factor1-2, Cup-Shaped Cotyledon6 genes) and LATE EMBRYOGENESIS ABUNDANT genes in their roots. Taken together, our data show that OsCPK4 functions as a positive regulator of the salt and drought stress responses in rice via the protection of cellular membranes from stress-induced oxidative damage.
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Affiliation(s)
- Sonia Campo
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
| | - Patricia Baldrich
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
| | - Joaquima Messeguer
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
| | - Eric Lalanne
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
| | - María Coca
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
| | - Blanca San Segundo
- Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicas-Institut de Recerca i Tecnologia Agroalimentàries-Universitat Autònoma de Barcelona-Universitat de Barcelona, Campus UAB, Bellaterra, Cerdanyola del Valles, 08193 Barcelona, Spain (S.C., P.B., J.M., M.C., B.S.S.); andOryzon Genomics, Cornella de Llobregat, 08940 Barcelona, Spain (E.L.)
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426
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Plant salt stress status is transmitted systemically via propagating calcium waves. Proc Natl Acad Sci U S A 2014; 111:6126-7. [PMID: 24737890 DOI: 10.1073/pnas.1404895111] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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427
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Yokawa K, Fasano R, Kagenishi T, Baluška F. Light as stress factor to plant roots - case of root halotropism. FRONTIERS IN PLANT SCIENCE 2014; 5:718. [PMID: 25566292 PMCID: PMC4264407 DOI: 10.3389/fpls.2014.00718] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 11/28/2014] [Indexed: 05/04/2023]
Abstract
Despite growing underground, largely in darkness, roots emerge to be very sensitive to light. Recently, several important papers have been published which reveal that plant roots not only express all known light receptors but also that their growth, physiology and adaptive stress responses are light-sensitive. In Arabidopsis, illumination of roots speeds-up root growth via reactive oxygen species-mediated and F-actin dependent process. On the other hand, keeping Arabidopsis roots in darkness alters F-actin distribution, polar localization of PIN proteins as well as polar transport of auxin. Several signaling components activated by phytohormones are overlapping with light-related signaling cascade. We demonstrated that the sensitivity of roots to salinity is altered in the light-grown Arabidopsis roots. Particularly, light-exposed roots are less effective in their salt-avoidance behavior known as root halotropism. Here we discuss these new aspects of light-mediated root behavior from cellular, physiological and evolutionary perspectives.
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Affiliation(s)
- Ken Yokawa
- Department of Plant Cell Biology, Institute of Cellular and Molecular Botany, University of BonnBonn, Germany
- Department of Biological Sciences, Tokyo Metropolitan UniversityTokyo, Japan
| | - Rossella Fasano
- Department of Pharmacy, University of SalernoFisciano, Italy
| | - Tomoko Kagenishi
- Department of Plant Cell Biology, Institute of Cellular and Molecular Botany, University of BonnBonn, Germany
| | - František Baluška
- Department of Plant Cell Biology, Institute of Cellular and Molecular Botany, University of BonnBonn, Germany
- *Correspondence: František Baluška, Department of Plant Cell Biology, Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, 53115 Bonn, Germany e-mail:
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