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Zhang L, Xu Z, Ji H, Zhou Y, Yang S. TaWRKY40 transcription factor positively regulate the expression of TaGAPC1 to enhance drought tolerance. BMC Genomics 2019; 20:795. [PMID: 31666006 PMCID: PMC6822423 DOI: 10.1186/s12864-019-6178-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/10/2019] [Indexed: 02/03/2023] Open
Abstract
BACKGROUNDS Drought stress is one of the major factors that affects wheat yield. Glyceraldehyde-3-Phosphate dehydrogenase (GAPDH) is a multifunctional enzyme that plays the important role in abiotic stress and plant development. However, in wheat, limited information about drought-responsive GAPC genes has been reported, and the mechanism underlying the regulation of the GAPC protein is unknown. RESULTS In this study, we evaluated the potential role of GAPC1 in drought stress in wheat and Arabidopsis. We found that the overexpression of TaGAPC1 could enhance the tolerance to drought stress in transgenic Arabidopsis. Yeast one-hybrid library screening and EMSA showed that TaWRKY40 acts as a direct regulator of the TaGAPC1 gene. A dual luciferase reporter assay indicated that TaWRKY40 improved the TaGAPC1 promoter activity. The results of qRT-PCR in wheat protoplast cells with instantaneous overexpression of TaWRKY40 indicated that the expression level of TaGAPC1 induced by abiotic stress was upregulated by TaWRKY40. Moreover, TaGAPC1 promoted H2O2 detoxification in response to drought. CONCLUSION These results demonstrate that the inducible transcription factor TaWRKY40 could activate the transcription of the TaGAPC1 gene, thereby increasing the tolerance of plants to drought stress.
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Affiliation(s)
- Lin Zhang
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Zhiyong Xu
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Haikun Ji
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Ye Zhou
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Shushen Yang
- College of Life Sciences, Northwest A&F University, Yangling, 712100 Shaanxi China
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Shen L, Zhuang B, Wu Q, Zhang H, Nie J, Jing W, Yang L, Zhang W. Phosphatidic acid promotes the activation and plasma membrane localization of MKK7 and MKK9 in response to salt stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110190. [PMID: 31481213 DOI: 10.1016/j.plantsci.2019.110190] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/07/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Phosphatidic acid (PA) is a lipid secondary messenger involved in intracellular signaling in eukaryotes. It has been confirmed that PA mediates salt stress signaling by promoting activation of Mitogen-activated Protein Kinase 6 (MPK6) which phosphorylates Na+/H+ antiporter SOS1. However, the MPK6-upstream kinases and their relationship to PA remain unclear. Here, we found that, among the six tested Arabidopsis Mitogen-activated Protein Kinase Kinases (MKKs), PA specifically bound to MKK7 and MKK9 which phosphorylate MPK6, and promoted the activation of MKK7/MKK9. Based on phenotypic and physiological analyses, we found that MKK7 and MKK9 positively regulate Arabidopsis salt tolerance and are functionally redundant. NaCl treatment can induce significant increase in MKK7/MKK9 activities, and this depends, in part, on the Phospholipase Dα1 (PLDα1). MKK7 and MKK9 also mediate the NaCl-induced activation of MPK6. Furthermore, PA or NaCl treatment could induce translocation of MKK7/MKK9 to the plasma membrane, whereas this translocation disappeared in pldα1. These results indicate that PA binds to MKK7 and MKK9, increases their kinase activity and plasma membrane localization during Arabidopsis response to salt stress. Together with the PA-MPK6-SOS1 pathway identified previously, this mechanism may maximize the signal transduction efficiency, providing novel insights into the link between lipid signaling and MAPK cascade.
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Affiliation(s)
- Like Shen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Baocheng Zhuang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Qi Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Hongsheng Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Jianing Nie
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Wen Jing
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Lele Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China
| | - Wenhua Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing, 210095, People's Republic of China.
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53
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Causal Enzymology and Physiological Aspects May Be Accountable to Membrane Integrity in Response to Salt Stress in Arabidopsis thaliana Lines. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3534943. [PMID: 31396528 PMCID: PMC6668528 DOI: 10.1155/2019/3534943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/19/2019] [Accepted: 07/08/2019] [Indexed: 11/18/2022]
Abstract
Apart from their significance in the protection against stress conditions, the plant cell membranes are essential for proper development of the diverse surface structures formed on aerial plant organs. In addition, we signal that membrane remodeling and integrity are function of some of causal physiological and enzymological aspects such as the MDA, the ion leakage and also the monitoring of some phytozymes involved in lipid and cellulose metabolisms. Those last ones are related to the membrane structure (lipases and cellulases), that were assessed in durum wheat dehydrin transgenic context (YS, K1-K2, DH2, and DH4), proline metabolic mutant (P5CS1-4) per comparison with the wild-type plant (Wt). We report also the docking data reinforcing the fact that the membrane integrity seems to be function of causal enzymological behaviors, through the molecular dynamic investigation resulting from the dehydrin-phytozyme interactions and also from the inhibition effect of the durum wheat LTP4 on the lipase activity.
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54
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Kaneda M, van Oostende-Triplet C, Chebli Y, Testerink C, Bednarek SY, Geitmann A. Plant AP180 N-Terminal Homolog Proteins Are Involved in Clathrin-Dependent Endocytosis during Pollen Tube Growth in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2019; 60:1316-1330. [PMID: 30796435 DOI: 10.1093/pcp/pcz036] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 02/18/2019] [Indexed: 05/05/2023]
Abstract
Polarized cell growth in plants is maintained under the strict control and exquisitely choreographed balance of exocytic and endocytic membrane trafficking. The pollen tube has become a model system for rapid polar growth in which delivery of cell wall material and membrane recycling are controlled by membrane trafficking. Endocytosis plays an important role that is poorly understood. The plant AP180 N-Terminal Homolog (ANTH) proteins are putative homologs of Epsin 1 that recruits clathrin to phosphatidylinositol 4, 5-bisphosphate (PIP2) containing membranes to facilitate vesicle budding during endocytosis. Two Arabidopsis ANTH encoded by the genes AtAP180 and AtECA2 are highly expressed in pollen tubes. Pollen tubes from T-DNA inserted knockout mutant lines display significant morphological defects and unique pectin deposition. Fluorescent tagging reveals organization into dynamic foci located at the lateral flanks of the pollen tube. This precisely defined subapical domain coincides which clathrin-mediated endocytosis (CME) and PIP2 localization. Using a liposome-protein binding test, we showed that AtECA2 protein and ANTH domain recombinant proteins have strong affinity to PIP2 and phosphatidic acid containing liposomes in vitro. Taken together these data suggest that Arabidopsis ANTH proteins may play an important role in CME, proper cell wall assembly and morphogenesis.
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Affiliation(s)
- Minako Kaneda
- Institut de recherche en biologie v�g�tale, Universit� de Montr�al, 4101 Rue Sherbrooke Est, Montr�al, QC, Canada
| | - Chloï van Oostende-Triplet
- Institut de recherche en biologie v�g�tale, Universit� de Montr�al, 4101 Rue Sherbrooke Est, Montr�al, QC, Canada
- Present address: Cell Biology and Image Acquisition Core Facility, Faculty of Medicine, University of Ottawa, RGN 3171, 451 Smyth Road, Ottawa, ON, Canada
| | - Youssef Chebli
- Department of Plant Science, McGill University, Macdonald Campus, 21111 Lakeshore, Ste-Anne-de-Bellevue, Qu�bec, Canada
| | - Christa Testerink
- Section of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, Amsterdam, The Netherlands
- Present address: Laboratory of Plant Physiology, Wageningen University and Research, PB Wageningen, The Netherlands
| | | | - Anja Geitmann
- Institut de recherche en biologie v�g�tale, Universit� de Montr�al, 4101 Rue Sherbrooke Est, Montr�al, QC, Canada
- Department of Plant Science, McGill University, Macdonald Campus, 21111 Lakeshore, Ste-Anne-de-Bellevue, Qu�bec, Canada
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55
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Shumilina J, Kusnetsova A, Tsarev A, Janse van Rensburg HC, Medvedev S, Demidchik V, Van den Ende W, Frolov A. Glycation of Plant Proteins: Regulatory Roles and Interplay with Sugar Signalling? Int J Mol Sci 2019; 20:E2366. [PMID: 31086058 PMCID: PMC6539852 DOI: 10.3390/ijms20092366] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 02/06/2023] Open
Abstract
Glycation can be defined as an array of non-enzymatic post-translational modifications of proteins formed by their interaction with reducing carbohydrates and carbonyl products of their degradation. Initial steps of this process rely on reducing sugars and result in the formation of early glycation products-Amadori and Heyns compounds via Schiff base intermediates, whereas their oxidative degradation or reactions of proteins with α-dicarbonyl compounds yield a heterogeneous group of advanced glycation end products (AGEs). These compounds accompany thermal processing of protein-containing foods and are known to impact on ageing, pathogenesis of diabetes mellitus and Alzheimer's disease in mammals. Surprisingly, despite high tissue carbohydrate contents, glycation of plant proteins was addressed only recently and its physiological role in plants is still not understood. Therefore, here we summarize and critically discuss the first steps done in the field of plant protein glycation during the last decade. We consider the main features of plant glycated proteome and discuss them in the context of characteristic metabolic background. Further, we address the possible role of protein glycation in plants and consider its probable contribution to protein degradation, methylglyoxal and sugar signalling, as well as interplay with antioxidant defense.
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Affiliation(s)
- Julia Shumilina
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
| | - Alena Kusnetsova
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Biotechnology, St. Petersburg Chemical Pharmaceutical University, Saint Petersburg 197022, Russia.
| | - Alexander Tsarev
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, 06120 Halle, Germany.
| | | | - Sergei Medvedev
- Department of Plant Physiology and Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
| | - Vadim Demidchik
- Department of Plant Cell Biology and Bioengineering, Belarusian State University, 220030 Minsk, Belarus.
- Department of Horticulture, Foshan University, Foshan 528231, China.
| | - Wim Van den Ende
- Laboratory of Molecular Plant Biology, KU Leuven, 3001 Leuven, Belgium.
| | - Andrej Frolov
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, 06120 Halle, Germany.
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56
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Mousavi S, Regni L, Bocchini M, Mariotti R, Cultrera NGM, Mancuso S, Googlani J, Chakerolhosseini MR, Guerrero C, Albertini E, Baldoni L, Proietti P. Physiological, epigenetic and genetic regulation in some olive cultivars under salt stress. Sci Rep 2019; 9:1093. [PMID: 30705308 PMCID: PMC6355907 DOI: 10.1038/s41598-018-37496-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 11/30/2018] [Indexed: 12/20/2022] Open
Abstract
Cultivated olive, a typical fruit crop species of the semi-arid regions, could successfully face the new scenarios driven by the climate change through the selection of tolerant varieties to salt and drought stresses. In the present work, multidisciplinary approaches, including physiological, epigenetic and genetic studies, have been applied to clarify the salt tolerance mechanisms in olive. Four varieties (Koroneiki, Royal de Cazorla, Arbequina and Picual) and a related form (O. europaea subsp. cuspidata) were grown in a hydroponic system under different salt concentrations from zero to 200 mM. In order to verify the plant response under salt stress, photosynthesis, gas exchange and relative water content were measured at different time points, whereas chlorophyll and leaf concentration of Na+, K+ and Ca2+ ions, were quantified at 43 and 60 days after treatment, when stress symptoms became prominent. Methylation sensitive amplification polymorphism (MSAP) technique was used to assess the effects of salt stress on plant DNA methylation. Several fragments resulted differentially methylated among genotypes, treatments and time points. Real time quantitative PCR (RT-qPCR) analysis revealed significant expression changes related to plant response to salinity. Four genes (OePIP1.1, OePetD, OePI4Kg4 and OeXyla) were identified, as well as multiple retrotransposon elements usually targeted by methylation under stress conditions.
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Affiliation(s)
- Soraya Mousavi
- Università degli Studi di Perugia, Dept. Agricultural, Food and Environmental Sciences, Perugia, Italy
- CNR - Institute of Biosciences and Bioresources, Perugia, Italy
| | - Luca Regni
- Università degli Studi di Perugia, Dept. Agricultural, Food and Environmental Sciences, Perugia, Italy
| | - Marika Bocchini
- Università degli Studi di Perugia, Dept. Agricultural, Food and Environmental Sciences, Perugia, Italy
| | | | | | - Stefano Mancuso
- Università degli Studi di Firenze, Dept. Agrifood Production and Environmental Sciences, Florence, Italy
| | - Jalaladdin Googlani
- Università degli Studi di Firenze, Dept. Agrifood Production and Environmental Sciences, Florence, Italy
| | | | | | - Emidio Albertini
- Università degli Studi di Perugia, Dept. Agricultural, Food and Environmental Sciences, Perugia, Italy
| | - Luciana Baldoni
- CNR - Institute of Biosciences and Bioresources, Perugia, Italy.
| | - Primo Proietti
- Università degli Studi di Perugia, Dept. Agricultural, Food and Environmental Sciences, Perugia, Italy
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57
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Wang Y, Cong Y, Wang Y, Guo Z, Yue J, Xing Z, Gao X, Chai X. Identification of Early Salinity Stress-Responsive Proteins in Dunaliella salina by isobaric tags for relative and absolute quantitation (iTRAQ)-Based Quantitative Proteomic Analysis. Int J Mol Sci 2019; 20:ijms20030599. [PMID: 30704074 PMCID: PMC6386831 DOI: 10.3390/ijms20030599] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/31/2018] [Accepted: 01/16/2019] [Indexed: 12/13/2022] Open
Abstract
Salt stress is one of the most serious abiotic factors that inhibit plant growth. Dunaliella salina has been recognized as a model organism for stress response research due to its high capacity to tolerate extreme salt stress. A proteomic approach based on isobaric tags for relative and absolute quantitation (iTRAQ) was used to analyze the proteome of D. salina during early response to salt stress and identify the differentially abundant proteins (DAPs). A total of 141 DAPs were identified in salt-treated samples, including 75 upregulated and 66 downregulated DAPs after 3 and 24 h of salt stress. DAPs were annotated and classified into gene ontology functional groups. The Kyoto Encyclopedia of Genes and Genomes pathway analysis linked DAPs to tricarboxylic acid cycle, photosynthesis and oxidative phosphorylation. Using search tool for the retrieval of interacting genes (STRING) software, regulatory protein⁻protein interaction (PPI) networks of the DAPs containing 33 and 52 nodes were built at each time point, which showed that photosynthesis and ATP synthesis were crucial for the modulation of early salinity-responsive pathways. The corresponding transcript levels of five DAPs were quantified by quantitative real-time polymerase chain reaction (qRT-PCR). These results presented an overview of the systematic molecular response to salt stress. This study revealed a complex regulatory mechanism of early salt tolerance in D. salina and potentially contributes to developing strategies to improve stress resilience.
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Affiliation(s)
- Yuan Wang
- Key Laboratory of Hydrobiology in Liaoning Province's Universities, Dalian Ocean University, Dalian 116021, China.
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
| | - Yuting Cong
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
| | - Yonghua Wang
- Bioinformatics Center, College of Life Sciences, Northwest A&F University, Yangling 712100, China.
| | - Zihu Guo
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Jinrong Yue
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
| | - Zhenyu Xing
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
| | - Xiangnan Gao
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
| | - Xiaojie Chai
- College of fisheries and life science, Dalian Ocean University, Dalian 116021, China.
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58
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Decker D, Kleczkowski LA. UDP-Sugar Producing Pyrophosphorylases: Distinct and Essential Enzymes With Overlapping Substrate Specificities, Providing de novo Precursors for Glycosylation Reactions. FRONTIERS IN PLANT SCIENCE 2019; 9:1822. [PMID: 30662444 PMCID: PMC6329318 DOI: 10.3389/fpls.2018.01822] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/23/2018] [Indexed: 05/02/2023]
Abstract
Nucleotide sugars are the key precursors for all glycosylation reactions and are required both for oligo- and polysaccharides synthesis and protein and lipid glycosylation. Among all nucleotide sugars, UDP-sugars are the most important precursors for biomass production in nature (e.g., synthesis of cellulose, hemicellulose, and pectins for cell wall production). Several recent studies have already suggested a potential role for UDP-Glc in plant growth and development, and UDP-Glc has also been suggested as a signaling molecule, in addition to its precursor function. In this review, we will cover primary mechanisms of formation of UDP-sugars, by focusing on UDP-sugar metabolizing pyrophosphorylases. The pyrophosphorylases can be divided into three families: UDP-Glc pyrophosphorylase (UGPase), UDP-sugar pyrophosphorylase (USPase), and UDP-N-acetyl glucosamine pyrophosphorylase (UAGPase), which can be distinguished both by their amino acid sequences and by differences in substrate specificity. Substrate specificities of these enzymes are discussed, along with structure-function relationships, based on their crystal structures and homology modeling. Earlier studies with transgenic plants have revealed that each of the pyrophosphorylases is essential for plant survival, and their loss or a decrease in activity results in reproductive impairment. This constitutes a problem when studying exact in vivo roles of the enzymes using classical reverse genetics approaches. Thus, strategies involving the use of specific inhibitors (reverse chemical genetics) are also discussed. Further characterization of the properties/roles of pyrophosphorylases should address fundamental questions dealing with mechanisms and control of carbohydrate synthesis and may allow to identify targets for manipulation of biomass production in plants.
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Affiliation(s)
| | - Leszek A. Kleczkowski
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
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59
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Takáč T, Pechan T, Šamajová O, Šamaj J. Proteomic Analysis of Arabidopsis pldα 1 Mutants Revealed an Important Role of Phospholipase D Alpha 1 in Chloroplast Biogenesis. FRONTIERS IN PLANT SCIENCE 2019; 10:89. [PMID: 30833950 PMCID: PMC6388422 DOI: 10.3389/fpls.2019.00089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/21/2019] [Indexed: 05/13/2023]
Abstract
Phospholipase D alpha 1 (PLDα1) is a phospholipid hydrolyzing enzyme playing multiple regulatory roles in stress responses of plants. Its signaling activity is mediated by phosphatidic acid (PA) production, capacity to bind, and modulate G-protein complexes or by interaction with other proteins. This work presents a quantitative proteomic analysis of two T-DNA insertion pldα1 mutants of Arabidopsis thaliana. Remarkably, PLDα1 knockouts caused differential regulation of many proteins forming protein complexes, while PLDα1 might be required for their stability. Almost one third of differentially abundant proteins (DAPs) in pldα1 mutants are implicated in metabolism and RNA binding. Latter functional class comprises proteins involved in translation, RNA editing, processing, stability, and decay. Many of these proteins, including those regulating chloroplast protein import and protein folding, share common functions in chloroplast biogenesis and leaf variegation. Consistently, pldα1 mutants showed altered level of TIC40 (a major regulator of protein import into chloroplast), differential accumulation of photosynthetic protein complexes and changed chloroplast sizes as revealed by immunoblotting, blue-native electrophoresis, and microscopic analyses, respectively. Our proteomic analysis also revealed that genetic depletion of PLDα1 also affected proteins involved in cell wall architecture, redox homeostasis, and abscisic acid signaling. Taking together, PLDα1 appears as a protein integrating cytosolic and plastidic protein translations, plastid protein degradation, and protein import into chloroplast in order to regulate chloroplast biogenesis in Arabidopsis.
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Affiliation(s)
- Tomáš Takáč
- Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Olomouc, Czechia
| | - Tibor Pechan
- Institute for Genomics, Biocomputing and Biotechnology, Mississippi Agricultural and Forestry Experiment Station, Mississippi State University, Starkville, MS, United States
| | - Olga Šamajová
- Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Olomouc, Czechia
| | - Jozef Šamaj
- Faculty of Science, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Olomouc, Czechia
- *Correspondence: Jozef Šamaj
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60
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Zarza X, Shabala L, Fujita M, Shabala S, Haring MA, Tiburcio AF, Munnik T. Extracellular Spermine Triggers a Rapid Intracellular Phosphatidic Acid Response in Arabidopsis, Involving PLDδ Activation and Stimulating Ion Flux. FRONTIERS IN PLANT SCIENCE 2019; 10:601. [PMID: 31178874 PMCID: PMC6537886 DOI: 10.3389/fpls.2019.00601] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/24/2019] [Indexed: 05/19/2023]
Abstract
Polyamines, such as putrescine (Put), spermidine (Spd), and spermine (Spm), are low-molecular-weight polycationic molecules found in all living organisms. Despite the fact that they have been implicated in various important developmental and adaptative processes, their mode of action is still largely unclear. Here, we report that Put, Spd, and Spm trigger a rapid increase in the signaling lipid, phosphatidic acid (PA) in Arabidopsis seedlings but also mature leaves. Using time-course and dose-response experiments, Spm was found to be the most effective; promoting PA responses at physiological (low μM) concentrations. In seedlings, the increase of PA occurred mainly in the root and partly involved the plasma membrane polyamine-uptake transporter (PUT), RMV1. Using a differential 32Pi-labeling strategy combined with transphosphatidylation assays and T-DNA insertion mutants, we found that phospholipase D (PLD), and in particular PLDδ was the main contributor of the increase in PA. Measuring non-invasive ion fluxes (MIFE) across the root plasma membrane of wild type and pldδ-mutant seedlings, revealed that the formation of PA is linked to a gradual- and transient efflux of K+. Potential mechanisms of how PLDδ and the increase of PA are involved in polyamine function is discussed.
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Affiliation(s)
- Xavier Zarza
- Plant Cell Biology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
- Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Lana Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
| | - Miki Fujita
- Gene Discovery Research Group, RIKEN Plant Science Center, Tsukuba, Japan
| | - Sergey Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
| | - Michel A. Haring
- Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Antonio F. Tiburcio
- Department of Biology, Healthcare and the Environment, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Teun Munnik
- Plant Cell Biology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
- Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
- *Correspondence: Teun Munnik,
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61
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Shot-Gun Proteomic Analysis on Roots of Arabidopsis pldα1 Mutants Suggesting the Involvement of PLDα1 in Mitochondrial Protein Import, Vesicular Trafficking and Glucosinolate Biosynthesis. Int J Mol Sci 2018; 20:ijms20010082. [PMID: 30587782 PMCID: PMC6337374 DOI: 10.3390/ijms20010082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 12/14/2022] Open
Abstract
Phospholipase Dα1 (PLDα1) belongs to phospholipases, a large phospholipid hydrolyzing protein family. PLDα1 has a substrate preference for phosphatidylcholine leading to enzymatic production of phosphatidic acid, a lipid second messenger with multiple cellular functions. PLDα1 itself is implicated in biotic and abiotic stress responses. Here, we present a shot-gun differential proteomic analysis on roots of two Arabidopsis pldα1 mutants compared to the wild type. Interestingly, PLDα1 deficiency leads to altered abundances of proteins involved in diverse processes related to membrane transport including endocytosis and endoplasmic reticulum-Golgi transport. PLDα1 may be involved in the stability of attachment sites of endoplasmic reticulum to the plasma membrane as suggested by increased abundance of synaptotagmin 1, which was validated by immunoblotting and whole-mount immunolabelling analyses. Moreover, we noticed a robust abundance alterations of proteins involved in mitochondrial import and electron transport chain. Notably, the abundances of numerous proteins implicated in glucosinolate biosynthesis were also affected in pldα1 mutants. Our results suggest a broader biological involvement of PLDα1 than anticipated thus far, especially in the processes such as endomembrane transport, mitochondrial protein import and protein quality control, as well as glucosinolate biosynthesis.
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Roth R, Chiapello M, Montero H, Gehrig P, Grossmann J, O'Holleran K, Hartken D, Walters F, Yang SY, Hillmer S, Schumacher K, Bowden S, Craze M, Wallington EJ, Miyao A, Sawers R, Martinoia E, Paszkowski U. A rice Serine/Threonine receptor-like kinase regulates arbuscular mycorrhizal symbiosis at the peri-arbuscular membrane. Nat Commun 2018; 9:4677. [PMID: 30410018 PMCID: PMC6224560 DOI: 10.1038/s41467-018-06865-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 10/02/2018] [Indexed: 01/29/2023] Open
Abstract
In terrestrial ecosystems most plant species live in mutualistic symbioses with nutrient-delivering arbuscular mycorrhizal (AM) fungi. Establishment of AM symbioses includes transient, intracellular formation of fungal feeding structures, the arbuscules. A plant-derived peri-arbuscular membrane (PAM) surrounds the arbuscules, mediating reciprocal nutrient exchange. Signaling at the PAM must be well coordinated to achieve this dynamic cellular intimacy. Here, we identify the PAM-specific Arbuscular Receptor-like Kinase 1 (ARK1) from maize and rice to condition sustained AM symbiosis. Mutation of rice ARK1 causes a significant reduction in vesicles, the fungal storage structures, and a concomitant reduction in overall root colonization by the AM fungus Rhizophagus irregularis. Arbuscules, although less frequent in the ark1 mutant, are morphologically normal. Co-cultivation with wild-type plants restores vesicle and spore formation, suggesting ARK1 function is required for the completion of the fungal life-cycle, thereby defining a functional stage, post arbuscule development. The peri-arbuscular membrane (PAM) mediates mutually-beneficial nutrient exchange between plants and arbuscular mycorrhizal (AM) fungi. Here the authors identify ARK1, a PAM-specific receptor-like kinase from rice that sustains AM symbiosis post-arbuscule development.
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Affiliation(s)
- Ronelle Roth
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.
| | - Marco Chiapello
- Department of Plant Molecular Biology, University of Lausanne, Biophore, 1015, Lausanne, Switzerland.,Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QW, UK
| | - Héctor Montero
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Peter Gehrig
- Functional Genomics Center, University and ETH Zürich, Winterthurerstr. 190, 8057, Zürich, Switzerland
| | - Jonas Grossmann
- Functional Genomics Center, University and ETH Zürich, Winterthurerstr. 190, 8057, Zürich, Switzerland
| | - Kevin O'Holleran
- Cambridge Advanced Imaging Centre, University of Cambridge, Cambridge, CB2 3DY, UK
| | - Denise Hartken
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Fergus Walters
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Shu-Yi Yang
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK
| | - Stefan Hillmer
- Electron Microscopy Core Facility, University of Heidelberg, Im Neuenheimer Feld 345, 69120, Heidelberg, Germany
| | - Karin Schumacher
- Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, 69120, Heidelberg, Germany
| | - Sarah Bowden
- The John Bingham Laboratory, National Institute of Agricultural Botany, Huntingdon Road, Cambridge, CB3 0LE, UK
| | - Melanie Craze
- The John Bingham Laboratory, National Institute of Agricultural Botany, Huntingdon Road, Cambridge, CB3 0LE, UK
| | - Emma J Wallington
- The John Bingham Laboratory, National Institute of Agricultural Botany, Huntingdon Road, Cambridge, CB3 0LE, UK
| | - Akio Miyao
- National Agriculture and Food Research Organization, Advanced Genomics Breeding Section, Institute of Crop Science, 2-1-2, Kannondai, Tsukuba, Ibaraki, 305-8518, Japan
| | - Ruairidh Sawers
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados, 36821, Irapuato, GTO, Mexico
| | - Enrico Martinoia
- Institute of Plant Biology, University of Zürich, Zollikerstrasse 107, 8008, Zürich, Switzerland
| | - Uta Paszkowski
- Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK. .,Department of Plant Molecular Biology, University of Lausanne, Biophore, 1015, Lausanne, Switzerland.
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63
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Yao HY, Xue HW. Phosphatidic acid plays key roles regulating plant development and stress responses. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2018; 60:851-863. [PMID: 29660254 DOI: 10.1111/jipb.12655] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/11/2018] [Indexed: 05/28/2023]
Abstract
Phospholipids, including phosphatidic acid (PA), phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG), phosphatidylserine (PS) and phosphoinositides, have emerged as an important class of cellular messenger molecules in various cellular and physiological processes, of which PA attracts much attention of researchers. In addition to its effect on stimulating vesicle trafficking, many studies have demonstrated that PA plays a crucial role in various signaling pathways by binding target proteins and regulating their activity and subcellular localization. Here, we summarize the functional mechanisms and target proteins underlying PA-mediated regulation of cellular signaling, development, hormonal responses, and stress responses in plants.
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Affiliation(s)
- Hong-Yan Yao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hong-Wei Xue
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
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64
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Pokotylo I, Kravets V, Martinec J, Ruelland E. The phosphatidic acid paradox: Too many actions for one molecule class? Lessons from plants. Prog Lipid Res 2018; 71:43-53. [PMID: 29842906 DOI: 10.1016/j.plipres.2018.05.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 11/29/2022]
Abstract
Phosphatidic acid (PA) is a simple phospholipid observed in most organisms. PA acts as a key metabolic intermediate and a second messenger that regulates many cell activities. In plants, PA is involved in numerous cell responses induced by hormones, stress inputs and developmental processes. Interestingly, PA production can be triggered by opposite stressors, such as cold and heat, or by hormones that are considered to be antagonistic, such as abscisic acid and salicylic acid. This property questions the specificity of the responses controlled by PA. Are there generic responses to PA, meaning that cell regulation triggered by PA would be always the same, even in opposite physiological situations? Alternatively, do the responses to PA differ according to the physiological context within the cells? If so, the mechanisms that regulate the divergence of PA-controlled reactions are poorly defined. This review summarizes the latest opinions on how PA signalling is directed in plant cells and examines the intrinsic properties of PA that enable its regulatory diversity. We propose a concept whereby PA regulatory messages are perceived as complex "signatures" that take into account their production site, the availability of target proteins and the relevant cellular environments.
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Affiliation(s)
- Igor Pokotylo
- Université Paris-Est, Institut d'Ecologie et des Sciences de l'Environnement de Paris, Créteil, France; Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Volodymyr Kravets
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Jan Martinec
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czech Republic
| | - Eric Ruelland
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine; CNRS, UMR7618, Institut d'Ecologie et des Sciences de l'Environnement de Paris, Créteil, France.
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65
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Nguyen HH, Lee MH, Song K, Ahn G, Lee J, Hwang I. The A/ENTH Domain-Containing Protein AtECA4 Is an Adaptor Protein Involved in Cargo Recycling from the trans-Golgi Network/Early Endosome to the Plasma Membrane. MOLECULAR PLANT 2018; 11:568-583. [PMID: 29317286 DOI: 10.1016/j.molp.2018.01.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/03/2017] [Accepted: 01/03/2018] [Indexed: 05/05/2023]
Abstract
Endocytosis and subsequent trafficking pathways are crucial for regulating the activity of plasma membrane-localized proteins. Depending on cellular and physiological conditions, the internalized cargoes are sorted at (and transported from) the trans-Golgi network/early endosome (TGN/EE) to the vacuole for degradation or recycled back to the plasma membrane. How this occurs at the molecular level remains largely elusive. Here, we provide evidence that the ENTH domain-containing protein AtECA4 plays a crucial role in recycling cargoes from the TGN/EE to the plasma membrane in Arabidopsis thaliana. AtECA4:sGFP primarily localized to the TGN/EE and plasma membrane (at low levels). Upon NaCl or mannitol treatment, AtECA4:sGFP accumulated at the TGN/EE at an early time point but was released from the TGN/EE to the cytosol at later time points. The ateca4 mutant showed higher resistance to osmotic stress and more sensitive to exogenous abscisic acid (ABA) than the wild type, as well as increased expression of ABA-inducible genes RD29A and RD29B. Consistently, ABCG25, a plasma membrane-localized ABA exporter, accumulated at the prevacuolar compartment in ateca4, indicating a defect in recycling to the plasma membrane. However, the role of AtECA4 in cargo recycling is not specific to ABCG25, as it also functions in the recycling of BRI1. These results suggest that AtECA4 plays a crucial role in the recycling of endocytosed cargoes from the TGN/EE to the plasma membrane.
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Affiliation(s)
- Hong Hanh Nguyen
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Myoung Hui Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Kyungyoung Song
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Gyeongik Ahn
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jihyeong Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Inhwan Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea; Department of Life Sciences, Pohang University of Science and Technology, Pohang 790-784, Korea.
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66
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GWAS Uncovers Differential Genetic Bases for Drought and Salt Tolerances in Sesame at the Germination Stage. Genes (Basel) 2018; 9:genes9020087. [PMID: 29443881 PMCID: PMC5852583 DOI: 10.3390/genes9020087] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/25/2018] [Accepted: 02/08/2018] [Indexed: 01/02/2023] Open
Abstract
Sesame has great potential as an industrial crop but its production is challenged by drought and salt stresses. To unravel the genetic variants leading to salinity and drought tolerances at the germination stage, genome-wide association studies of stress tolerance indexes related to NaCl-salt and polyethylene glycol-drought induced stresses were performed with a diversity panel of 490 sesame accessions. An extensive variation was observed for drought and salt responses in the population and most of the accessions were moderately tolerant to both stresses. A total of 132 and 120 significant Single Nucleotide Polymorphisms (SNPs) resolved to nine and 15 Quantitative trait loci (QTLs) were detected for drought and salt stresses, respectively. Only two common QTLs for drought and salt responses were found located on linkage groups 5 and 7, respectively. This indicates that the genetic bases for drought and salt responses in sesame are different. A total of 13 and 27 potential candidate genes were uncovered for drought and salt tolerance indexes, respectively, encoding transcription factors, antioxidative enzymes, osmoprotectants and involved in hormonal biosynthesis, signal transduction or ion sequestration. The identified SNPs and potential candidate genes represent valuable resources for future functional characterization towards the enhancement of sesame cultivars for drought and salt tolerances.
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67
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AtCAP2 is crucial for lytic vacuole biogenesis during germination by positively regulating vacuolar protein trafficking. Proc Natl Acad Sci U S A 2018; 115:E1675-E1683. [PMID: 29378957 DOI: 10.1073/pnas.1717204115] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Protein trafficking is a fundamental mechanism of subcellular organization and contributes to organellar biogenesis. AtCAP2 is an Arabidopsis homolog of the Mesembryanthemum crystallinum calcium-dependent protein kinase 1 adaptor protein 2 (McCAP2), a member of the syntaxin superfamily. Here, we show that AtCAP2 plays an important role in the conversion to the lytic vacuole (LV) during early plant development. The AtCAP2 loss-of-function mutant atcap2-1 displayed delays in protein storage vacuole (PSV) protein degradation, PSV fusion, LV acidification, and biosynthesis of several vacuolar proteins during germination. At the mature stage, atcap2-1 plants accumulated vacuolar proteins in the prevacuolar compartment (PVC) instead of the LV. In wild-type plants, AtCAP2 localizes to the PVC as a peripheral membrane protein and in the PVC compartment recruits glyceraldehyde-3-phosphate dehydrogenase C2 (GAPC2) to the PVC. We propose that AtCAP2 contributes to LV biogenesis during early plant development by supporting the trafficking of specific proteins involved in the PSV-to-LV transition and LV acidification during early stages of plant development.
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68
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Novák D, Vadovič P, Ovečka M, Šamajová O, Komis G, Colcombet J, Šamaj J. Gene Expression Pattern and Protein Localization of Arabidopsis Phospholipase D Alpha 1 Revealed by Advanced Light-Sheet and Super-Resolution Microscopy. FRONTIERS IN PLANT SCIENCE 2018; 9:371. [PMID: 29628934 PMCID: PMC5877115 DOI: 10.3389/fpls.2018.00371] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/06/2018] [Indexed: 05/11/2023]
Abstract
Phospholipase D alpha 1 (PLDα1, At3g15730) and its product phosphatidic acid (PA) are involved in a variety of cellular and physiological processes, such as cytoskeletal remodeling, regulation of stomatal closure and opening, as well as biotic and abiotic stress signaling. Here we aimed to study developmental expression patterns and subcellular localization of PLDα1 in Arabidopsis using advanced microscopy methods such as light-sheet fluorescence microscopy (LSFM) and structured illumination microscopy (SIM). We complemented two knockout pldα1 mutants with a YFP-tagged PLDα1 expressed under the PLDα1 native promoter in order to study developmental expression pattern and subcellular localization of PLDα1 in Arabidopsis thaliana under natural conditions. Imaging of tissue-specific and developmentally-regulated localization of YFP-tagged PLDα1 by LSFM in roots of growing seedlings showed accumulation of PLDα1-YFP in the root cap and the rhizodermis. Expression of PLDα1-YFP in the rhizodermis was considerably higher in trichoblasts before and during root hair formation and growth. Thus, PLDα1-YFP accumulated in emerging root hairs and in the tips of growing root hairs. PLDα1-YFP showed cytoplasmic subcellular localization in root cap cells and in cells of the root transition zone. In aerial parts of plants PLDα1-YFP was also localized in the cytoplasm showing enhanced accumulation in the cortical cytoplasmic layer of epidermal non-dividing cells of hypocotyls, leaves, and leaf petioles. However, in dividing cells of root apical meristem and leaf petiole epidermis PLDα1-YFP was enriched in mitotic spindles and phragmoplasts, as revealed by co-visualization with microtubules. Finally, super-resolution SIM imaging revealed association of PLDα1-YFP with both microtubules and clathrin-coated vesicles (CCVs) and pits (CCPs). In conclusion, this study shows the developmentally-controlled expression and subcellular localization of PLDα1 in dividing and non-dividing Arabidopsis cells.
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Affiliation(s)
- Dominik Novák
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
| | - Pavol Vadovič
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
| | - Miroslav Ovečka
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
| | - Olga Šamajová
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
| | - George Komis
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
| | - Jean Colcombet
- UMR9213 Institut des Sciences des Plantes de Paris Saclay, Orsay, France
| | - Jozef Šamaj
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Olomouc, Czechia
- *Correspondence: Jozef Šamaj
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69
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Lim GH, Singhal R, Kachroo A, Kachroo P. Fatty Acid- and Lipid-Mediated Signaling in Plant Defense. ANNUAL REVIEW OF PHYTOPATHOLOGY 2017; 55:505-536. [PMID: 28777926 DOI: 10.1146/annurev-phyto-080516-035406] [Citation(s) in RCA: 199] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fatty acids and lipids, which are major and essential constituents of all plant cells, not only provide structural integrity and energy for various metabolic processes but can also function as signal transduction mediators. Lipids and fatty acids can act as both intracellular and extracellular signals. In addition, cyclic and acyclic products generated during fatty acid metabolism can also function as important chemical signals. This review summarizes the biosynthesis of fatty acids and lipids and their involvement in pathogen defense.
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Affiliation(s)
- Gah-Hyun Lim
- Department of Plant Pathology, University of Kentucky, Lexington, Kentucky 40546;
| | - Richa Singhal
- Department of Plant Pathology, University of Kentucky, Lexington, Kentucky 40546;
| | - Aardra Kachroo
- Department of Plant Pathology, University of Kentucky, Lexington, Kentucky 40546;
| | - Pradeep Kachroo
- Department of Plant Pathology, University of Kentucky, Lexington, Kentucky 40546;
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70
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Xia K, Wang B, Zhang J, Li Y, Yang H, Ren D. Arabidopsis phosphoinositide-specific phospholipase C 4 negatively regulates seedling salt tolerance. PLANT, CELL & ENVIRONMENT 2017; 40:1317-1331. [PMID: 28102910 DOI: 10.1111/pce.12918] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 01/10/2017] [Accepted: 01/13/2017] [Indexed: 05/20/2023]
Abstract
Previous physiological and pharmacological studies have suggested that the activity of phosphoinositide-specific phospholipase C (PI-PLC) plays an important role in regulating plant salt stress responses by altering the intracellular Ca2+ concentration. However, the individual members of plant PLCs involved in this process need to be identified. Here, the function of AtPLC4 in the salt stress response of Arabidopsis seedlings was analysed. plc4 mutant seedlings showed hyposensitivity to salt stress compared with Col-0 wild-type seedlings, and the salt hyposensitive phenotype could be complemented by the expression of native promoter-controlled AtPLC4. Transgenic seedlings with AtPLC4 overexpression (AtPLC4 OE) exhibited a salt-hypersensitive phenotype, while transgenic seedlings with its inactive mutant expression (AtPLC4m OE) did not exhibit this phenotype. Using aequorin as a Ca2+ indicator in plc4 mutant and AtPLC4 OE seedlings, AtPLC4 was shown to positively regulate the salt-induced Ca2+ increase. The salt-hypersensitive phenotype of AtPLC4 OE seedlings was partially rescued by EGTA. An analysis of salt-responsive genes revealed that the transcription of RD29B, MYB15 and ZAT10 was inversely regulated in plc4 mutant and AtPLC4 OE seedlings. Our findings suggest that AtPLC4 negatively regulates the salt tolerance of Arabidopsis seedlings, and Ca2+ may be involved in regulating this process.
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Affiliation(s)
- Keke Xia
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Bo Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jiewei Zhang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yuan Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Hailian Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Dongtao Ren
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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71
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Huis In 't Veld RAG, Kramer G, van der Ende A, Speijer D, Pannekoek Y. The Hfq regulon of Neisseria meningitidis. FEBS Open Bio 2017; 7:777-788. [PMID: 28593133 PMCID: PMC5458458 DOI: 10.1002/2211-5463.12218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 02/07/2017] [Accepted: 03/09/2017] [Indexed: 01/09/2023] Open
Abstract
The conserved RNA‐binding protein, Hfq, has multiple regulatory roles within the prokaryotic cell, including promoting stable duplex formation between small RNAs and mRNAs, and thus hfq deletion mutants have pleiotropic phenotypes. Previous proteome and transcriptome studies of Neisseria meningitidis have generated limited insight into differential gene expression due to Hfq loss. In this study, reversed‐phase liquid chromatography combined with data‐independent alternate scanning mass spectrometry (LC‐MSE) was utilized for rapid high‐resolution quantitative proteomic analysis to further elucidate the differentially expressed proteome of a meningococcal hfq deletion mutant. Whole‐cell lysates of N. meningitidis serogroup B H44/76 wild‐type (wt) and H44/76Δhfq (Δhfq) grown in liquid growth medium were subjected to tryptic digestion. The resulting peptide mixtures were separated by liquid chromatography (LC) prior to analysis by mass spectrometry (MSE). Differential expression was analyzed by Student's t‐test with control for false discovery rate (FDR). Reliable quantitation of relative expression comparing wt and Δhfq was achieved with 506 proteins (20%). Upon FDR control at q ≤ 0.05, 48 up‐ and 59 downregulated proteins were identified. From these, 81 were identified as novel Hfq‐regulated candidates, while 15 proteins were previously found by SDS/PAGE/MS and 24 with microarray analyses. Thus, using LC‐MSE we have expanded the repertoire of Hfq‐regulated proteins. In conjunction with previous studies, a comprehensive network of Hfq‐regulated proteins was constructed and differentially expressed proteins were found to be involved in a large variety of cellular processes. The results and comparisons with other gram‐negative model systems, suggest still unidentified sRNA analogs in N. meningitidis.
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Affiliation(s)
- Robert A G Huis In 't Veld
- Department of Medical Microbiology Center of Infection and Immunity Amsterdam (CINIMA) Academic Medical Center Amsterdam The Netherlands
| | - Gertjan Kramer
- Clinical Proteomics Facility Department of Medical Biochemistry Academic Medical Center Amsterdam The Netherlands.,Present address: Genome Biology Unit EMBL Heidelberg Heidelberg Germany
| | - Arie van der Ende
- Department of Medical Microbiology Center of Infection and Immunity Amsterdam (CINIMA) Academic Medical Center Amsterdam The Netherlands.,Reference Laboratory for Bacterial Meningitis Department of Medical Microbiology Academic Medical Center Amsterdam The Netherlands
| | - Dave Speijer
- Clinical Proteomics Facility Department of Medical Biochemistry Academic Medical Center Amsterdam The Netherlands
| | - Yvonne Pannekoek
- Department of Medical Microbiology Center of Infection and Immunity Amsterdam (CINIMA) Academic Medical Center Amsterdam The Netherlands
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72
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Roy Choudhury S, Pandey S. Phosphatidic acid binding inhibits RGS1 activity to affect specific signaling pathways in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 90:466-477. [PMID: 28161903 DOI: 10.1111/tpj.13503] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 05/22/2023]
Abstract
Modulation of the active versus inactive forms of the Gα protein is critical for the signaling processes mediated by the heterotrimeric G-protein complex. We have recently established that in Arabidopsis, the regulator of G-protein signaling (RGS1) protein and a lipid-hydrolyzing enzyme, phospholipase Dα1 (PLDα1), both act as GTPase-activity accelerating proteins (GAPs) for the Gα protein to attenuate its activity. RGS1 and PLDα1 interact with each other, and RGS1 inhibits the activity of PLDα1 during regulation of a subset of responses. In this study, we present evidence that this regulation is bidirectional. Phosphatidic acid (PA), a second messenger typically derived from the lipid-hydrolyzing activity of PLDα1, is a molecular target of RGS1. PA binds and inhibits the GAP activity of RGS1. A conserved lysine residue in RGS1 (Lys259 ) is directly involved in RGS1-PA binding. Introduction of this RGS1 protein variant in the rgs1 mutant background makes plants hypersensitive to a subset of abscisic acid-mediated responses. Our data point to the existence of negative feedback loops between these two regulatory proteins that precisely modulate the level of active Gα, consequently generating a highly controlled signal-response output.
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Affiliation(s)
- Swarup Roy Choudhury
- Donald Danforth Plant Science Center, 975 N. Warson Road, St Louis, MO, 63132, USA
| | - Sona Pandey
- Donald Danforth Plant Science Center, 975 N. Warson Road, St Louis, MO, 63132, USA
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73
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Fei Y, Xue Y, Du P, Yang S, Deng X. Expression analysis and promoter methylation under osmotic and salinity stress of TaGAPC1 in wheat (Triticum aestivum L). PROTOPLASMA 2017; 254:987-996. [PMID: 27488925 DOI: 10.1007/s00709-016-1008-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
Cytosolic glyceraldehyde-3-phosphate dehydrogenase (GAPC) catalyzes a key reaction in glycolysis and encoded by a multi-gene family which showed instability expression under abiotic stress. DNA methylation is an epigenetic modification that plays an important role in gene regulation in response to abiotic stress. The comprehension of DNA methylation at promoter region of TaGAPC1 can provide insights into the transcription regulation mechanisms of plant genes under abiotic stress. In this study, we cloned TaGAPC1 genes and its promoters from two wheat genomes, then investigated the expression patterns of TaGAPC1 under osmotic and salinity stress, and analyzed the promoter sequences. Moreover, the methylation patterns of promoters under stress were confirmed. Expression analysis indicated that TaGAPC1 was induced inordinately by stresses in two wheat genotypes with contrasting drought tolerance. Several stress-related cis-acting elements (MBS, DRE, GT1 and LTR et al.) were located in its promoters. Furthermore, the osmotic and salinity stress induced the demethylation of CG and CHG nucleotide in the promoter region of Changwu134. The methylation level of CHG and CHH in promoter of Zhengyin1 was always increased under stresses, and the CG contexts remained unchanged. The cytosine loci of stress-related cis-acting elements also showed different methylation changes in this process. These results provide insights into the relationship between promoter methylation and gene expression, promoting the function investigation of GAPC.
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Affiliation(s)
- Ying Fei
- College of Life Sciences, Northwest A&F University, 712100, Yangling, Shaanxi, People's Republic of China
| | - Yuanxia Xue
- College of Life Sciences, Northwest A&F University, 712100, Yangling, Shaanxi, People's Republic of China
| | - Peixiu Du
- College of Life Sciences, Northwest A&F University, 712100, Yangling, Shaanxi, People's Republic of China
| | - Shushen Yang
- College of Life Sciences, Northwest A&F University, 712100, Yangling, Shaanxi, People's Republic of China.
| | - Xiping Deng
- Institute of Soil and Water Conservation, Chinese Academy of Sciences, 712100, Yangling, Shaanxi, People's Republic of China.
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74
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Viggiano L, de Pinto MC. Dynamic DNA Methylation Patterns in Stress Response. PLANT EPIGENETICS 2017. [DOI: 10.1007/978-3-319-55520-1_15] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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75
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Ji T, Li S, Huang M, Di Q, Wang X, Wei M, Shi Q, Li Y, Gong B, Yang F. Overexpression of Cucumber Phospholipase D alpha Gene ( CsPLDα) in Tobacco Enhanced Salinity Stress Tolerance by Regulating Na +-K + Balance and Lipid Peroxidation. FRONTIERS IN PLANT SCIENCE 2017; 8:499. [PMID: 28439282 PMCID: PMC5383712 DOI: 10.3389/fpls.2017.00499] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/22/2017] [Indexed: 05/21/2023]
Abstract
Plant phospholipase D (PLD), which can hydrolyze membrane phospholipids to produce phosphatidic acid (PA), a secondary signaling molecule, has been proposed to function in diverse plant stress responses. In this research, we characterized the roles of the cucumber phospholipase D alpha gene (PLDα, GenBank accession number EF363796) in growth and tolerance to short- and long-term salt stress in transgenic tobacco (Nicotiana tabacum). Fresh and dry weights of roots, PLD activity and content, mitogen activated protein kinase (MAPK) gene expression, Na+-K+ homeostasis, expression of genes encoding ion exchange, reactive oxygen species (ROS) metabolism and osmotic adjustment substances were investigated in wild type (WT) and CsPLDα-overexpression tobacco lines grown under short- and long-term high salt (250 mM) stress. Under short-term stress (5 h), in both overexpression lines, the PA content, and the expression levels of MAPK and several genes related to ion exchange (NtNHX1, NtNKT1, NtHAK1, NtNHA1, NtVAG1), were promoted by high PLD activity. Meanwhile, the Na+/K+ ratio decreased. Under long-term stress (16 days), ROS scavenging systems (superoxide dismutase, peroxidase, catalase, ascorbate peroxidase activities) in leaves of transgenic lines were more active than those in WT plants. Meanwhile, the contents of proline, soluble sugar, and soluble protein significantly increased. In contrast, the contents of O2•- and H2O2, the electrolytic leakage and the accumulation of malondialdehyde in leaves significantly decreased. The root fresh and dry weights of the overexpression lines increased significantly. Na+-K+ homeostasis had the same trend as under the short-term treatment. These findings suggested that CsPLDα-produced PA can activate the downstream signals' adaptive response to alleviate the damage of salt stress, and the main strategies for adaptation to salt stress are the accumulation of osmoprotective compounds, maintaining Na+-K+ homeostasis and the scavenging of ROS, which function in the osmotic balancing and structural stabilization of membranes.
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Affiliation(s)
- Tuo Ji
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Shuzhen Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Meili Huang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Qinghua Di
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Xiufeng Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of AgricultureTai’an, China
| | - Min Wei
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Qinghua Shi
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of AgricultureTai’an, China
| | - Yan Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Biao Gong
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
| | - Fengjuan Yang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural UniversityTai’an, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of AgricultureTai’an, China
- *Correspondence: Fengjuan Yang,
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76
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Bellati J, Champeyroux C, Hem S, Rofidal V, Krouk G, Maurel C, Santoni V. Novel Aquaporin Regulatory Mechanisms Revealed by Interactomics. Mol Cell Proteomics 2016; 15:3473-3487. [PMID: 27609422 PMCID: PMC5098044 DOI: 10.1074/mcp.m116.060087] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/31/2016] [Indexed: 12/22/2022] Open
Abstract
PIP1;2 and PIP2;1 are aquaporins that are highly expressed in roots and bring a major contribution to root water transport and its regulation by hormonal and abiotic factors. Interactions between cellular proteins or with other macromolecules contribute to forming molecular machines. Proteins that molecularly interact with PIP1;2 and PIP2;1 were searched to get new insights into regulatory mechanisms of root water transport. For that, a immuno-purification strategy coupled to protein identification and quantification by mass spectrometry (IP-MS) of PIPs was combined with data from the literature, to build thorough PIP1;2 and PIP2;1 interactomes, sharing about 400 interacting proteins. Such interactome revealed PIPs to behave as a platform for recruitment of a wide range of transport activities and provided novel insights into regulation of PIP cellular trafficking by osmotic and oxidative treatments. This work also pointed a role of lipid signaling in PIP function and enhanced our knowledge of protein kinases involved in PIP regulation. In particular we show that 2 members of the receptor-like kinase (RLK) family (RKL1 (At1g48480) and Feronia (At3g51550)) differentially modulate PIP activity through distinct molecular mechanisms. The overall work opens novel perspectives in understanding PIP regulatory mechanisms and their role in adjustment of plant water status.
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Affiliation(s)
- Jorge Bellati
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Chloé Champeyroux
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Sonia Hem
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Valérie Rofidal
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Gabriel Krouk
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Christophe Maurel
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
| | - Véronique Santoni
- From the ‡Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, UMR 5004 CNRS/UMR 0386 INRA/Montpellier SupAgro/Université Montpellier, F-34060 Montpellier, Cedex 2, France
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77
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Llanes A, Arbona V, Gómez-Cadenas A, Luna V. Metabolomic profiling of the halophyte Prosopis strombulifera shows sodium salt- specific response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:145-157. [PMID: 27428369 DOI: 10.1016/j.plaphy.2016.07.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/04/2016] [Accepted: 07/09/2016] [Indexed: 05/24/2023]
Abstract
Primary and secondary metabolite profiles were analyzed in roots and leaves of the halophytic shrub Prosopis strombulifera in response to control plants (no salt added in the growing media) and to lowering the osmotic potential to -1.0, -1.9, and -2.6 MPa generated by NaCl, Na2SO4, and the iso-osmotic combination of them at 24 h after reaching such potential. A rapid production of metabolites in response to sodium salt was found, which was correlated with modifications in growth parameters. Analysis of polar metabolite profiles by GC-MS rendered a total of 108 significantly altered compounds including 18 amino acids, 19 secondary metabolites, 23 carbohydrates, 13 organic acids, 4 indole acids, among others. Primary metabolites showed a differential response under the salt treatments, which was dependent on salt type and concentration, organ and age of plants. Most of identified compounds showed the strongest accumulation at the highest salt concentration assayed for Na2SO4-treated plants, which was correlated with damaging effects of sulfate anion on plant growth. Roots of NaCl-treated plants showed a higher number of altered metabolites (analyzed by UPLC-ESI-QqTOF-MS) compared to other treatments, while leaves of Na2SO4-treated plants showed the highest number of altered signals. A low degree of overlapping between secondary metabolites altered in roots and leaves of NaCl and Na2SO4-treated plants was found. However, when both NaCl and Na2SO4 salts were present plants always showed a lower number of altered metabolites. Three compounds were tentatively identified: tryptophan, lysophosphatidylcoline and 13-hydroxyoctadecadienoic acid. Increasing knowledge on P. strombulifera metabolism will contribute to unravel the underlying biochemical mechanism of salt tolerance.
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Affiliation(s)
- Analía Llanes
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Laboratorio de Fisiología Vegetal, Departamento de Ciencias Naturales, Universidad Nacional de Río Cuarto, Route 36 Km. 601, CP X5804BYA, Río Cuarto, Córdoba, Argentina.
| | - Vicent Arbona
- Ecofisiologia i Biotecnologia, Departament de Ciencies Agraries i del Medi Natural, Universitat Jaume I, E-12071, Castelló de la Plana, Spain
| | - Aurelio Gómez-Cadenas
- Ecofisiologia i Biotecnologia, Departament de Ciencies Agraries i del Medi Natural, Universitat Jaume I, E-12071, Castelló de la Plana, Spain
| | - Virginia Luna
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Laboratorio de Fisiología Vegetal, Departamento de Ciencias Naturales, Universidad Nacional de Río Cuarto, Route 36 Km. 601, CP X5804BYA, Río Cuarto, Córdoba, Argentina.
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78
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Phosphatidic acid binding proteins display differential binding as a function of membrane curvature stress and chemical properties. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2709-2716. [PMID: 27480805 DOI: 10.1016/j.bbamem.2016.07.014] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/12/2016] [Accepted: 07/27/2016] [Indexed: 01/16/2023]
Abstract
Phosphatidic acid (PA) is a crucial membrane phospholipid involved in de novo lipid synthesis and numerous intracellular signaling cascades. The signaling function of PA is mediated by peripheral membrane proteins that specifically recognize PA. While numerous PA-binding proteins are known, much less is known about what drives specificity of PA-protein binding. Previously, we have described the ionization properties of PA, summarized in the electrostatic-hydrogen bond switch, as one aspect that drives the specific binding of PA by PA-binding proteins. Here we focus on membrane curvature stress induced by phosphatidylethanolamine and show that many PA-binding proteins display enhanced binding as a function of negative curvature stress. This result is corroborated by the observation that positive curvature stress, induced by lyso phosphatidylcholine, abolishes PA binding of target proteins. We show, for the first time, that a novel plant PA-binding protein, Arabidopsis Epsin-like Clathrin Adaptor 1 (ECA1) displays curvature-dependence in its binding to PA. Other established PA targets examined in this study include, the plant proteins TGD2, and PDK1, the yeast proteins Opi1 and Spo20, and, the mammalian protein Raf-1 kinase and the C2 domain of the mammalian phosphatidylserine binding protein Lact as control. Based on our observations, we propose that liposome binding assays are the preferred method to investigate lipid binding compared to the popular lipid overlay assays where membrane environment is lost. The use of complex lipid mixtures is important to elucidate further aspects of PA binding proteins.
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79
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Hong Y, Zhao J, Guo L, Kim SC, Deng X, Wang G, Zhang G, Li M, Wang X. Plant phospholipases D and C and their diverse functions in stress responses. Prog Lipid Res 2016; 62:55-74. [DOI: 10.1016/j.plipres.2016.01.002] [Citation(s) in RCA: 214] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 12/23/2015] [Accepted: 01/01/2016] [Indexed: 12/25/2022]
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80
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Astorquiza PL, Usorach J, Racagni G, Villasuso AL. Diacylglycerol pyrophosphate binds and inhibits the glyceraldehyde-3-phosphate dehydrogenase in barley aleurone. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 101:88-95. [PMID: 26866974 DOI: 10.1016/j.plaphy.2016.01.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/14/2016] [Accepted: 01/18/2016] [Indexed: 06/05/2023]
Abstract
The aleurona cell is a model that allows the study of the antagonistic effect of gibberellic acid (GA) and abscisic acid (ABA). Previous results of our laboratory demonstrated the involvement of phospholipids during the response to ABA and GA. ABA modulates the levels of diacylglycerol, phosphatidic acid and diacylglycerol pyrophosphate (DAG, PA, DGPP) through the activities of phosphatidate phosphatases, phospholipase D, diacylglycerol kinase and phosphatidate kinase (PAP, PLD, DGK and PAK). PA and DGPP are key phospholipids in the response to ABA, since both are capable of modifying the hydrolitic activity of the aleurona. Nevertheless, little is known about the mechanism of action of these phospholipids during the ABA signal. DGPP is an anionic phospholipid with a pyrophosphate group attached to diacylglycerol. The ionization of the pyrophosphate group may be important to allow electrostatic interactions between DGPP and proteins. To understand how DGPP mediates cell functions in barley aleurone, we used a DGPP affinity membrane assay to isolate DGPP-binding proteins from Hordeum vulgare, followed by mass spectrometric sequencing. A cytosolic glyceraldehyde-3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) was identified for being bound to DGPP. To validate our method, the relatively abundant GAPDH was characterized with respect to its lipid-binding properties, by fat western blot. GAPDH antibody interacts with proteins that only bind to DGPP and PA. We also observed that ABA treatment increased GAPDH abundance and enzyme activity. The presence of phospholipids during GAPDH reaction modulated the GAPDH activity in ABA treated aleurone. These data suggest that DGPP binds to GAPDH and this DGPP and GAPDH interaction provides new evidences in the study of DGPP-mediated ABA responses in barley aleurone.
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Affiliation(s)
- Paula Luján Astorquiza
- Química Biológica, FCEFQN, Universidad Nacional de Río Cuarto, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Javier Usorach
- Química Biológica, FCEFQN, Universidad Nacional de Río Cuarto, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Graciela Racagni
- Química Biológica, FCEFQN, Universidad Nacional de Río Cuarto, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Ana Laura Villasuso
- Química Biológica, FCEFQN, Universidad Nacional de Río Cuarto, X5804BYA Río Cuarto, Córdoba, Argentina.
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81
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Chen Y, Chen C, Tan Z, Liu J, Zhuang L, Yang Z, Huang B. Functional Identification and Characterization of Genes Cloned from Halophyte Seashore Paspalum Conferring Salinity and Cadmium Tolerance. FRONTIERS IN PLANT SCIENCE 2016; 7:102. [PMID: 26904068 PMCID: PMC4746305 DOI: 10.3389/fpls.2016.00102] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/19/2016] [Indexed: 05/25/2023]
Abstract
Salinity-affected and heavy metal-contaminated soils limit the growth of glycophytic plants. Identifying genes responsible for superior tolerance to salinity and heavy metals in halophytes has great potential for use in developing salinity- and Cd-tolerant glycophytes. The objective of this study was to identify salinity- and Cd-tolerance related genes in seashore paspalum (Paspalum vaginatum), a halophytic perennial grass species, using yeast cDNA expression library screening method. Based on the Gateway-compatible vector system, a high-quality entry library was constructed, which contained 9.9 × 10(6) clones with an average inserted fragment length of 1.48 kb representing a 100% full-length rate. The yeast expression libraries were screened in a salinity-sensitive and a Cd-sensitive yeast mutant. The screening yielded 32 salinity-tolerant clones harboring 18 salinity-tolerance genes and 20 Cd-tolerant clones, including five Cd-tolerance genes. qPCR analysis confirmed that most of the 18 salinity-tolerance and five Cd-tolerance genes were up-regulated at the transcript level in response to salinity or Cd stress in seashore paspalum. Functional analysis indicated that salinity-tolerance genes from seashore paspalum could be involved mainly in photosynthetic metabolism, antioxidant systems, protein modification, iron transport, vesicle traffic, and phospholipid biosynthesis. Cd-tolerance genes could be associated with regulating pathways that are involved in phytochelatin synthesis, HSFA4-related stress protection, CYP450 complex, and sugar metabolism. The 18 salinity-tolerance genes and five Cd-tolerance genes could be potentially used as candidate genes for genetic modification of glycophytic grass species to improve salinity and Cd tolerance and for further analysis of molecular mechanisms regulating salinity and Cd tolerance.
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Affiliation(s)
- Yu Chen
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Chuanming Chen
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Zhiqun Tan
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Jun Liu
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Lili Zhuang
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Zhimin Yang
- Department of Turfgrass Science, College of Agro-Grassland Science, Nanjing Agricultural UniversityNanjing, China
| | - Bingru Huang
- Department of Plant Biology and Pathology, Rutgers, The State University of New JerseyNew Brunswick, NJ, USA
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82
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Singh D, Yadav NS, Tiwari V, Agarwal PK, Jha B. A SNARE-Like Superfamily Protein SbSLSP from the Halophyte Salicornia brachiata Confers Salt and Drought Tolerance by Maintaining Membrane Stability, K(+)/Na(+) Ratio, and Antioxidant Machinery. FRONTIERS IN PLANT SCIENCE 2016; 7:737. [PMID: 27313584 PMCID: PMC4889606 DOI: 10.3389/fpls.2016.00737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/13/2016] [Indexed: 05/06/2023]
Abstract
About 1000 salt-responsive ESTs were identified from an extreme halophyte Salicornia brachiata. Among these, a novel salt-inducible gene SbSLSP (Salicornia brachiata SNARE-like superfamily protein), showed up-regulation upon salinity and dehydration stress. The presence of cis-regulatory motifs related to abiotic stress in the putative promoter region supports our finding that SbSLSP gene is inducible by abiotic stress. The SbSLSP protein showed a high sequence identity to hypothetical/uncharacterized proteins from Beta vulgaris, Spinacia oleracea, Eucalyptus grandis, and Prunus persica and with SNARE-like superfamily proteins from Zostera marina and Arabidopsis thaliana. Bioinformatics analysis predicted a clathrin adaptor complex small-chain domain and N-myristoylation site in the SbSLSP protein. Subcellular localization studies indicated that the SbSLSP protein is mainly localized in the plasma membrane. Using transgenic tobacco lines, we establish that overexpression of SbSLSP resulted in elevated tolerance to salt and drought stress. The improved tolerance was confirmed by alterations in a range of physiological parameters, including high germination and survival rate, higher leaf chlorophyll contents, and reduced accumulation of Na(+) ion and reactive oxygen species (ROS). Furthermore, overexpressing lines also showed lower water loss, higher cell membrane stability, and increased accumulation of proline and ROS-scavenging enzymes. Overexpression of SbSLSP also enhanced the transcript levels of ROS-scavenging and signaling enzyme genes. This study is the first investigation of the function of the SbSLSP gene as a novel determinant of salinity/drought tolerance. The results suggest that SbSLSP could be a potential candidate to increase salinity and drought tolerance in crop plants for sustainable agriculture in semi-arid saline soil.
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Affiliation(s)
- Dinkar Singh
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Narendra Singh Yadav
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Vivekanand Tiwari
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Pradeep K. Agarwal
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
- Academy of Scientific and Innovative ResearchCSIR, New Delhi, India
| | - Bhavanath Jha
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
- Academy of Scientific and Innovative ResearchCSIR, New Delhi, India
- *Correspondence: Bhavanath Jha
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83
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Li S, Huang M, Di Q, Ji T, Wang X, Wei M, Shi Q, Li Y, Gong B, Yang F. The functions of a cucumber phospholipase D alpha gene (CsPLDα) in growth and tolerance to hyperosmotic stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 97:175-86. [PMID: 26476791 DOI: 10.1016/j.plaphy.2015.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 09/17/2015] [Accepted: 10/05/2015] [Indexed: 05/21/2023]
Abstract
Plant phospholipase D (PLD), which can hydrolyze membrane phospholipids to produce phosphatidic acid (PA), a secondary signaling molecule, has been proposed to function in diverse plant stress responses. In this research, a qRT-PCR analysis indicated that the expression of a cucumber phospholipase D alpha gene (CsPLDα) was induced by salt and drought stresses in the roots and leaves. To further study the roles of CsPLDα in regulating plant tolerance to salt, polyethylene glycol (PEG) and abscisic acid (ABA) stresses, transgenic tobacco plants constitutively overexpressing CsPLDα were produced. A qRT-PCR analysis showed that the CsPLDα transcript levels were high in transgenic tobacco lines, whereas no expression was found in wild type (WT) tobacco, indicating that CsPLDα was successfully transferred into the tobacco genome and overexpressed. Under normal conditions for 30 d, seeds of transgenic lines germinated neatly, and the seedlings were robust and bigger than WT plants. When treated with different concentrations of NaCl, PEG and ABA, germination rates and seedling sizes of the transgenic lines were significantly greater than WT. In addition, the germination times for transgenic lines were also remarkably shorter. Further studies indicated that transgenic lines had longer primary roots and more biomass accumulation than WT plants. The water loss in transgenic lines was also much lower than in WT. These findings suggest that the CsPLDα overexpression positively regulates plant tolerance to hyperosmotic stresses, and that CsPLDα is involved in the ABA regulation of stomatal closure and the alleviation of ABA inhibition on seed germination and seedling growth.
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Affiliation(s)
- Shuzhen Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Meili Huang
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Qinghua Di
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Tuo Ji
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Xiufeng Wang
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of Agriculture, Tai'an 271018, PR China
| | - Min Wei
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Qinghua Shi
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of Agriculture, Tai'an 271018, PR China
| | - Yan Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Biao Gong
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China
| | - Fengjuan Yang
- College of Horticulture Science and Engineering, Shandong Agricultural University, State Key Laboratory of Crop Biology, Tai'an 271018, PR China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of Agriculture, Tai'an 271018, PR China.
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84
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Abstract
Plants have a deep-rooted trust in gravity, but it is not unconditional. A new study shows that, if plant roots sense high doses of salt coming up from below, they dump gravity responses and grow away from the salt contamination.
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Affiliation(s)
- Michel Ruiz Rosquete
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), 1190 Vienna, Austria
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85
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Julkowska MM, Testerink C. Tuning plant signaling and growth to survive salt. TRENDS IN PLANT SCIENCE 2015; 20:586-594. [PMID: 26205171 DOI: 10.1016/j.tplants.2015.06.008] [Citation(s) in RCA: 237] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 06/16/2015] [Accepted: 06/25/2015] [Indexed: 05/20/2023]
Abstract
Salinity is one of the major abiotic factors threatening food security worldwide. Recently, our understanding of early processes underlying salinity tolerance has expanded. In this review, early signaling events, such as phospholipid signaling, calcium ion (Ca(2+)) responses, and reactive oxygen species (ROS) production, together with salt stress-induced abscisic acid (ABA) accumulation, are brought into the context of long-term salt stress-specific responses and alteration of plant growth. Salt-induced quiescent and recovery growth phases rely on modification of cell cycle activity, cell expansion, and cell wall extensibility. The period of initial growth arrest varies among different organs, leading to altered plant morphology. Studying stress-induced changes in growth dynamics can be used for screening to discover novel genes contributing to salt stress tolerance in model species and crops.
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Affiliation(s)
- Magdalena M Julkowska
- Section of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Christa Testerink
- Section of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands.
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86
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Baral A, Shruthi KS, Mathew MK. Vesicular trafficking and salinity responses in plants. IUBMB Life 2015; 67:677-86. [PMID: 26314939 DOI: 10.1002/iub.1425] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/11/2015] [Indexed: 01/09/2023]
Abstract
Research spanning three decades has demonstrated that vesicles pinch off from the plasma membrane and traffic through the cytoplasm of plant cells, much as previously reported in animal cells. Although the well-conserved clathrin-mediated mechanism of endocytosis has been well characterized, relatively little is known about clathrin-independent pathways in plants. Modulation of endocytosis by both physical stimuli and chemical ligands has been reported in plants. Here, we review the effect of salinity-one of the most deleterious environmental assaults-on endocytosis and intracellular trafficking.
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Affiliation(s)
- Anirban Baral
- National Centre for Biological Sciences (Tata Institute of Fundamental Research), Bellary Road, Bangalore, Karnataka, India
| | - K S Shruthi
- National Centre for Biological Sciences (Tata Institute of Fundamental Research), Bellary Road, Bangalore, Karnataka, India.,School of Bio-Sciences and Technology, VIT University, Vellore, Tamil Nadu, India
| | - M K Mathew
- National Centre for Biological Sciences (Tata Institute of Fundamental Research), Bellary Road, Bangalore, Karnataka, India
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87
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Ruelland E, Kravets V, Derevyanchuk M, Martinec J, Zachowski A, Pokotylo I. Role of phospholipid signalling in plant environmental responses. ENVIRONMENTAL AND EXPERIMENTAL BOTANY 2015; 114:129-143. [PMID: 0 DOI: 10.1016/j.envexpbot.2014.08.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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88
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Hyodo K, Taniguchi T, Manabe Y, Kaido M, Mise K, Sugawara T, Taniguchi H, Okuno T. Phosphatidic acid produced by phospholipase D promotes RNA replication of a plant RNA virus. PLoS Pathog 2015; 11:e1004909. [PMID: 26020241 PMCID: PMC4447390 DOI: 10.1371/journal.ppat.1004909] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 04/23/2015] [Indexed: 12/25/2022] Open
Abstract
Eukaryotic positive-strand RNA [(+)RNA] viruses are intracellular obligate parasites replicate using the membrane-bound replicase complexes that contain multiple viral and host components. To replicate, (+)RNA viruses exploit host resources and modify host metabolism and membrane organization. Phospholipase D (PLD) is a phosphatidylcholine- and phosphatidylethanolamine-hydrolyzing enzyme that catalyzes the production of phosphatidic acid (PA), a lipid second messenger that modulates diverse intracellular signaling in various organisms. PA is normally present in small amounts (less than 1% of total phospholipids), but rapidly and transiently accumulates in lipid bilayers in response to different environmental cues such as biotic and abiotic stresses in plants. However, the precise functions of PLD and PA remain unknown. Here, we report the roles of PLD and PA in genomic RNA replication of a plant (+)RNA virus, Red clover necrotic mosaic virus (RCNMV). We found that RCNMV RNA replication complexes formed in Nicotiana benthamiana contained PLDα and PLDβ. Gene-silencing and pharmacological inhibition approaches showed that PLDs and PLDs-derived PA are required for viral RNA replication. Consistent with this, exogenous application of PA enhanced viral RNA replication in plant cells and plant-derived cell-free extracts. We also found that a viral auxiliary replication protein bound to PA in vitro, and that the amount of PA increased in RCNMV-infected plant leaves. Together, our findings suggest that RCNMV hijacks host PA-producing enzymes to replicate.
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Affiliation(s)
- Kiwamu Hyodo
- Laboratory of Plant Pathology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Takako Taniguchi
- Institute for Enzyme Research, University of Tokushima, Tokushima, Japan
| | - Yuki Manabe
- Laboratory of Marine Bioproducts Technology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Masanori Kaido
- Laboratory of Plant Pathology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Kazuyuki Mise
- Laboratory of Plant Pathology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Tatsuya Sugawara
- Laboratory of Marine Bioproducts Technology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Hisaaki Taniguchi
- Institute for Enzyme Research, University of Tokushima, Tokushima, Japan
| | - Tetsuro Okuno
- Laboratory of Plant Pathology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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89
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Park C, Kang DS, Shin GH, Seo J, Kim H, Suh PG, Bae CD, Shin JH. Identification of novel phosphatidic acid-binding proteins in the rat brain. Neurosci Lett 2015; 595:108-13. [PMID: 25863174 DOI: 10.1016/j.neulet.2015.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 03/27/2015] [Accepted: 04/06/2015] [Indexed: 11/16/2022]
Abstract
Phosphatidic acid (PA) is an abundant negatively-charged phospholipid and has long been considered to be an important signaling molecule in diverse cellular events. Thus, the identification of proteins that specifically interact with PA is of considerable interest to understand the regulatory roles of PA. Herein, lipid-affinity purification and mass spectrometric analysis reveals 43 proteins, 19 known and 24 novel, as PA-binding proteins. A lipid-protein overlay assay confirmed that GDI1, PACSIN1, and DPYSL2 interact with not only with PA but also with other phospholipids. These results might be helpful for deciphering the functional effect of PA in the brain.
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Affiliation(s)
- ChiHu Park
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea; Mass Spectrometry, Research Core Facility, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Du-Seock Kang
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Geon-Hoon Shin
- Mass Spectrometry, Research Core Facility, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Jeongkon Seo
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea; UNIST Central Research Facility, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Hyein Kim
- Mass Spectrometry, Research Core Facility, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea; Division of Pharmacology, Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University, School of Medicine, Suwon, Republic of Korea
| | - Pann-Ghill Suh
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Chang-Dae Bae
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Joo-Ho Shin
- Mass Spectrometry, Research Core Facility, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea; Division of Pharmacology, Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University, School of Medicine, Suwon, Republic of Korea.
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90
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Sekereš J, Pleskot R, Pejchar P, Žárský V, Potocký M. The song of lipids and proteins: dynamic lipid-protein interfaces in the regulation of plant cell polarity at different scales. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:1587-98. [PMID: 25716697 DOI: 10.1093/jxb/erv052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Successful establishment and maintenance of cell polarity is crucial for many aspects of plant development, cellular morphogenesis, response to pathogen attack, and reproduction. Polar cell growth depends on integrating membrane and cell-wall dynamics with signal transduction pathways, changes in ion membrane transport, and regulation of vectorial vesicle trafficking and the dynamic actin cytoskeleton. In this review, we address the critical importance of protein-membrane crosstalk in the determination of plant cell polarity and summarize the role of membrane lipids, particularly minor acidic phospholipids, in regulation of the membrane traffic. We focus on the protein-membrane interface dynamics and discuss the current state of knowledge on three partially overlapping levels of descriptions. Finally, due to their multiscale and interdisciplinary nature, we stress the crucial importance of combining different strategies ranging from microscopic methods to computational modelling in protein-membrane studies.
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Affiliation(s)
- Juraj Sekereš
- 1 Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech Republic, Rozvojová 263, 16502 Prague 6, Czech Republic 2 Department of Experimental Plant Biology, Faculty of Science, Charles University in Prague, Viničná 5, 12844 Prague 2, Czech Republic
| | - Roman Pleskot
- 1 Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech Republic, Rozvojová 263, 16502 Prague 6, Czech Republic 3 Institute of Organic Chemistry and Biochemistry, v. v. i., Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Přemysl Pejchar
- 1 Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech Republic, Rozvojová 263, 16502 Prague 6, Czech Republic
| | - Viktor Žárský
- 1 Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech Republic, Rozvojová 263, 16502 Prague 6, Czech Republic 2 Department of Experimental Plant Biology, Faculty of Science, Charles University in Prague, Viničná 5, 12844 Prague 2, Czech Republic
| | - Martin Potocký
- 1 Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech Republic, Rozvojová 263, 16502 Prague 6, Czech Republic
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91
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El-Soda M, Kruijer W, Malosetti M, Koornneef M, Aarts MGM. Quantitative trait loci and candidate genes underlying genotype by environment interaction in the response of Arabidopsis thaliana to drought. PLANT, CELL & ENVIRONMENT 2015; 38:585-99. [PMID: 25074022 DOI: 10.1111/pce.12418] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 07/07/2014] [Accepted: 07/14/2014] [Indexed: 05/21/2023]
Abstract
Drought stress was imposed on two sets of Arabidopsis thaliana genotypes grown in sand under short-day conditions and analysed for several shoot and root growth traits. The response to drought was assessed for quantitative trait locus (QTL) mapping in a genetically diverse set of Arabidopsis accessions using genome-wide association (GWA) mapping, and conventional linkage analysis of a recombinant inbred line (RIL) population. Results showed significant genotype by environment interaction (G×E) for all traits in response to different watering regimes. For the RIL population, the observed G×E was reflected in 17 QTL by environment interactions (Q×E), while 17 additional QTLs were mapped not showing Q×E. GWA mapping identified 58 single nucleotide polymorphism (SNPs) associated with loci displaying Q×E and an additional 16 SNPs associated with loci not showing Q×E. Many candidate genes potentially underlying these loci were suggested. The genes for RPS3C and YLS7 were found to contain conserved amino acid differences when comparing Arabidopsis accessions with strongly contrasting drought response phenotypes, further supporting their candidacy. One of these candidate genes co-located with a QTL mapped in the RIL population.
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Affiliation(s)
- Mohamed El-Soda
- Laboratory of Genetics, Wageningen University, Wageningen, 6708PB, The Netherlands
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92
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Julkowska MM, McLoughlin F, Galvan-Ampudia CS, Rankenberg JM, Kawa D, Klimecka M, Haring MA, Munnik T, Kooijman EE, Testerink C. Identification and functional characterization of the Arabidopsis Snf1-related protein kinase SnRK2.4 phosphatidic acid-binding domain. PLANT, CELL & ENVIRONMENT 2015; 38:614-24. [PMID: 25074439 DOI: 10.1111/pce.12421] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/17/2014] [Accepted: 07/20/2014] [Indexed: 05/12/2023]
Abstract
Phosphatidic acid (PA) is an important signalling lipid involved in various stress-induced signalling cascades. Two SnRK2 protein kinases (SnRK2.4 and SnRK2.10), previously identified as PA-binding proteins, are shown here to prefer binding to PA over other anionic phospholipids and to associate with cellular membranes in response to salt stress in Arabidopsis roots. A 42 amino acid sequence was identified as the primary PA-binding domain (PABD) of SnRK2.4. Unlike the full-length SnRK2.4, neither the PABD-YFP fusion protein nor the SnRK2.10 re-localized into punctate structures upon salt stress treatment, showing that additional domains of the SnRK2.4 protein are required for its re-localization during salt stress. Within the PABD, five basic amino acids, conserved in class 1 SnRK2s, were found to be necessary for PA binding. Remarkably, plants overexpressing the PABD, but not a non-PA-binding mutant version, showed a severe reduction in root growth. Together, this study biochemically characterizes the PA-SnRK2.4 interaction and shows that functionality of the SnRK2.4 PABD affects root development.
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Affiliation(s)
- Magdalena M Julkowska
- Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH, Amsterdam, The Netherlands
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93
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Boutté Y, Moreau P. Modulation of endomembranes morphodynamics in the secretory/retrograde pathways depends on lipid diversity. CURRENT OPINION IN PLANT BIOLOGY 2014; 22:22-29. [PMID: 25233477 DOI: 10.1016/j.pbi.2014.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 08/27/2014] [Accepted: 08/30/2014] [Indexed: 05/11/2023]
Abstract
Membrane lipids are crucial bricks for cell and organelle compartmentalization and their physical properties and interactions with other membrane partners (lipids or proteins) reveal lipids as key actors of the regulation of membrane morphodynamics in many cellular functions and especially in the secretory/retrograde pathways. Studies on membrane models have indicated diverse mechanisms by which membranes bend. Moreover, in vivo studies also indicate that membrane curvature can play crucial roles in the regulation of endomembrane morphodynamics, organelle morphology and transport vesicle formation. A role for enzymes of lipid metabolism and lipid-protein interactions will be discussed as crucial mechanisms in the regulation of membrane morphodynamics in the secretory/retrograde pathways.
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Affiliation(s)
- Yohann Boutté
- Laboratoire de Biogenèse Membranaire, UMR 5200 CNRS, University of Bordeaux, France
| | - Patrick Moreau
- Laboratoire de Biogenèse Membranaire, UMR 5200 CNRS, University of Bordeaux, France.
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94
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Plant phosphoinositides-complex networks controlling growth and adaptation. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1851:759-69. [PMID: 25280638 DOI: 10.1016/j.bbalip.2014.09.018] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 11/24/2022]
Abstract
Plants differ in many ways from mammals or yeast. However, plants employ phosphoinositides for the regulation of essential cellular functions as do all other eukaryotes. In recent years the plant phosphoinositide system has been linked to the control of cell polarity. Phosphoinositides are also implicated in plant adaptive responses to changing environmental conditions. The current understanding is that plant phosphoinositides control membrane trafficking, ion channels and the cytoskeleton in similar ways as in other eukaryotic systems, but adapted to meet plant cellular requirements and with some plant-specific features. In addition, the formation of soluble inositol polyphosphates from phosphoinositides is important for the perception of important phytohormones, as the relevant receptor proteins contain such molecules as structural cofactors. Overall, the essential nature of phosphoinositides in plants has been established. Still, the complexity of the phosphoinositide networks in plant cells is only emerging and invites further study of its molecular details. This article is part of a special issue entitled Phosphoinositides.
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95
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Okazaki Y, Saito K. Roles of lipids as signaling molecules and mitigators during stress response in plants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2014; 79:584-96. [PMID: 24844563 DOI: 10.1111/tpj.12556] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 04/30/2014] [Accepted: 05/06/2014] [Indexed: 05/20/2023]
Abstract
Lipids are the major constituents of biological membranes that can sense extracellular conditions. Lipid-mediated signaling occurs in response to various environmental stresses, such as temperature change, salinity, drought and pathogen attack. Lysophospholipid, fatty acid, phosphatidic acid, diacylglycerol, inositol phosphate, oxylipins, sphingolipid, and N-acylethanolamine have all been proposed to function as signaling lipids. Studies on these stress-inducible lipid species have demonstrated that each lipid class has specific biological relevance, biosynthetic mechanisms and signaling cascades, which activate defense reactions at the transcriptional level. In addition to their roles in signaling, lipids also function as stress mitigators to reduce the intensity of stressors. To mitigate particular stresses, enhanced syntheses of unique lipids that accumulate in trace quantities under normal growth conditions are often observed under stressed conditions. The accumulation of oligogalactolipids and glucuronosyldiacylglycerol has recently been found to mitigate freezing and nutrition-depletion stresses, respectively, during lipid remodeling. In addition, wax, cutin and suberin, which are not constituents of the lipid bilayer, but are components derived from lipids, contribute to the reduction of drought stress and tissue injury. These features indicate that lipid-mediated defenses against environmental stress contributes to plant survival.
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Affiliation(s)
- Yozo Okazaki
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
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96
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Wase N, Black PN, Stanley BA, DiRusso CC. Integrated quantitative analysis of nitrogen stress response in Chlamydomonas reinhardtii using metabolite and protein profiling. J Proteome Res 2014; 13:1373-96. [PMID: 24528286 DOI: 10.1021/pr400952z] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nitrogen starvation induces a global stress response in microalgae that results in the accumulation of lipids as a potential source of biofuel. Using GC-MS-based metabolite and iTRAQ-labeled protein profiling, we examined and correlated the metabolic and proteomic response of Chlamydomonas reinhardtii under nitrogen stress. Key amino acids and metabolites involved in nitrogen sparing pathways, methyl group transfer reactions, and energy production were decreased in abundance, whereas certain fatty acids, citric acid, methionine, citramalic acid, triethanolamine, nicotianamine, trehalose, and sorbitol were increased in abundance. Proteins involved in nitrogen assimilation, amino acid metabolism, oxidative phosphorylation, glycolysis, TCA cycle, starch, and lipid metabolism were elevated compared with nonstressed cultures. In contrast, the enzymes of the glyoxylate cycle, one carbon metabolism, pentose phosphate pathway, the Calvin cycle, photosynthetic and light harvesting complex, and ribosomes were reduced. A noteworthy observation was that citrate accumulated during nitrogen stress coordinate with alterations in the enzymes that produce or utilize this metabolite, demonstrating the value of comparing protein and metabolite profiles to understand complex patterns of metabolic flow. Thus, the current study provides unique insight into the global metabolic adjustments leading to lipid storage during N starvation for application toward advanced biofuel production technologies.
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Affiliation(s)
- Nishikant Wase
- Department of Biochemistry, University of Nebraska-Lincoln , Lincoln, Nebraska 68588, United States
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97
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PI-PLC: Phosphoinositide-Phospholipase C in Plant Signaling. SIGNALING AND COMMUNICATION IN PLANTS 2014. [DOI: 10.1007/978-3-642-42011-5_2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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98
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Mustafa G, Komatsu S. Quantitative proteomics reveals the effect of protein glycosylation in soybean root under flooding stress. FRONTIERS IN PLANT SCIENCE 2014; 5:627. [PMID: 25477889 PMCID: PMC4235293 DOI: 10.3389/fpls.2014.00627] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/22/2014] [Indexed: 05/22/2023]
Abstract
Flooding stress has a negative impact on soybean cultivation because it severely impairs growth and development. To understand the flooding responsive mechanism in early stage soybeans, a glycoproteomic technique was used. Two-day-old soybeans were treated with flooding for 2 days and roots were collected. Globally, the accumulation level of glycoproteins, as revealed by cross-reaction with concanavalin A decreased by 2 days of flooding stress. Glycoproteins were enriched from total protein extracts using concanavalin A lectin resin and analyzed using a gel-free proteomic technique. One-hundred eleven and 69 glycoproteins were identified without and with 2 days of flooding stress, respectively. Functional categorization of these identified glycoproteins indicated that the accumulation level of proteins related to protein degradation, cell wall, and glycolysis increased, while stress-related proteins decreased under flooding stress. Also the accumulation level of glycoproteins localized in the secretory pathway decreased under flooding stress. Out of 23 common glycoproteins between control and flooding conditions, peroxidases and glycosyl hydrolases were decreased by 2 days of flooding stress. mRNA expression levels of proteins in the endoplasmic reticulum and N-glycosylation related proteins were downregulated by flooding stress. These results suggest that flooding might negatively affect the process of N-glycosylation of proteins related to stress and protein degradation; however glycoproteins involved in glycolysis are activated.
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Affiliation(s)
- Ghazala Mustafa
- Graduate School of Life and Environmental Science, University of TsukubaTsukuba, Japan
- National Institute of Crop Science, National Agriculture and Food Research OrganizationTsukuba, Japan
| | - Setsuko Komatsu
- Graduate School of Life and Environmental Science, University of TsukubaTsukuba, Japan
- National Institute of Crop Science, National Agriculture and Food Research OrganizationTsukuba, Japan
- *Correspondence: Setsuko Komatsu, National Institute of Crop Science, National Agriculture and Food Research Organization, Kannondai 2-1-18, Tsukuba 305-8518, Japan e-mail:
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99
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Wang X, Su Y, Liu Y, Kim SC, Fanella B. Phosphatidic Acid as Lipid Messenger and Growth Regulators in Plants. SIGNALING AND COMMUNICATION IN PLANTS 2014. [DOI: 10.1007/978-3-642-42011-5_4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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100
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McLoughlin F, Testerink C. Phosphatidic acid, a versatile water-stress signal in roots. FRONTIERS IN PLANT SCIENCE 2013; 4:525. [PMID: 24391659 PMCID: PMC3870300 DOI: 10.3389/fpls.2013.00525] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 12/06/2013] [Indexed: 05/03/2023]
Abstract
Adequate water supply is of utmost importance for growth and reproduction of plants. In order to cope with water deprivation, plants have to adapt their development and metabolism to ensure survival. To maximize water use efficiency, plants use a large array of signaling mediators such as hormones, protein kinases, and phosphatases, Ca(2) (+), reactive oxygen species, and low abundant phospholipids that together form complex signaling cascades. Phosphatidic acid (PA) is a signaling lipid that rapidly accumulates in response to a wide array of abiotic stress stimuli. PA formation provides the cell with spatial and transient information about the external environment by acting as a protein-docking site in cellular membranes. PA reportedly binds to a number of proteins that play a role during water limiting conditions, such as drought and salinity and has been shown to play an important role in maintaining root system architecture. Members of two osmotic stress-activated protein kinase families, sucrose non-fermenting 1-related protein kinase 2 and mitogen activated protein kinases were recently shown bind PA and are also involved in the maintenance of root system architecture and salinity stress tolerance. In addition, PA regulates several proteins involved in abscisic acid-signaling. PA-dependent recruitment of glyceraldehyde-3-phosphate dehydrogenase under water limiting conditions indicates a role in regulating metabolic processes. Finally, a recent study also shows the PA recruits the clathrin heavy chain and a potassium channel subunit, hinting toward additional roles in cellular trafficking and potassium homeostasis. Taken together, the rapidly increasing number of proteins reported to interact with PA implies a broad role for this versatile signaling phospholipid in mediating salt and water stress responses.
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Affiliation(s)
| | - Christa Testerink
- *Correspondence: Christa Testerink, Section of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Postbus 94215, 1090GE Amsterdam, Netherlands e-mail:
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