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Wang Q, Cang X, Yan H, Zhang Z, Li W, He J, Zhang M, Lou L, Wang R, Chang M. Activating plant immunity: the hidden dance of intracellular Ca 2+ stores. THE NEW PHYTOLOGIST 2024; 242:2430-2439. [PMID: 38586981 DOI: 10.1111/nph.19717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 03/14/2024] [Indexed: 04/09/2024]
Abstract
Calcium ion (Ca2+) serves as a versatile and conserved second messenger in orchestrating immune responses. In plants, plasma membrane-localized Ca2+-permeable channels can be activated to induce Ca2+ influx from extracellular space to cytosol upon pathogen infection. Notably, different immune elicitors can induce dynamic Ca2+ signatures in the cytosol. During pattern-triggered immunity, there is a rapid and transient increase in cytosolic Ca2+, whereas in effector-triggered immunity, the elevation of cytosolic Ca2+ is strong and sustained. Numerous Ca2+ sensors are localized in the cytosol or different intracellular organelles, which are responsible for detecting and converting Ca2+ signals. In fact, Ca2+ signaling coordinated by cytosol and subcellular compartments plays a crucial role in activating plant immune responses. However, the complete Ca2+ signaling network in plant cells is still largely ambiguous. This review offers a comprehensive insight into the collaborative role of intracellular Ca2+ stores in shaping the Ca2+ signaling network during plant immunity, and several intriguing questions for future research are highlighted.
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Affiliation(s)
- Qi Wang
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaoyan Cang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Haiqiao Yan
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zilu Zhang
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wei Li
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jinyu He
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Meixiang Zhang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Laiqing Lou
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ran Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Ming Chang
- Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
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Bakshi A, Choi WG, Kim SH, Gilroy S. The vacuolar Ca 2+ transporter CATION EXCHANGER 2 regulates cytosolic calcium homeostasis, hypoxic signaling, and response to flooding in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2023; 240:1830-1847. [PMID: 37743731 DOI: 10.1111/nph.19274] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/23/2023] [Indexed: 09/26/2023]
Abstract
Flooding represents a major threat to global agricultural productivity and food security, but plants are capable of deploying a suite of adaptive responses that can lead to short- or longer-term survival to this stress. One cellular pathway thought to help coordinate these responses is via flooding-triggered Ca2+ signaling. We have mined publicly available transcriptomic data from Arabidopsis subjected to flooding or low oxygen stress to identify rapidly upregulated, Ca2+ -related transcripts. We then focused on transporters likely to modulate Ca2+ signals. Candidates emerging from this analysis included AUTOINHIBITED Ca2+ ATPASE 1 and CATION EXCHANGER 2. We therefore assayed mutants in these genes for flooding sensitivity at levels from growth to patterns of gene expression and the kinetics of flooding-related Ca2+ changes. Knockout mutants in CAX2 especially showed enhanced survival to soil waterlogging coupled with suppressed induction of many marker genes for hypoxic response and constitutive activation of others. CAX2 mutants also generated larger and more sustained Ca2+ signals in response to both flooding and hypoxic challenges. CAX2 is a Ca2+ transporter located on the tonoplast, and so these results are consistent with an important role for vacuolar Ca2+ transport in the signaling systems that trigger flooding response.
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Affiliation(s)
- Arkadipta Bakshi
- Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Dr., Madison, WI, 53706, USA
| | - Won-Gyu Choi
- Department of Biochemistry and Molecular Biology, 1664 N. Virginia St, Reno, NV, 89557, USA
| | - Su-Hwa Kim
- Department of Biochemistry and Molecular Biology, 1664 N. Virginia St, Reno, NV, 89557, USA
| | - Simon Gilroy
- Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Dr., Madison, WI, 53706, USA
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Agaras BC, Grossi CEM, Ulloa RM. Unveiling the Secrets of Calcium-Dependent Proteins in Plant Growth-Promoting Rhizobacteria: An Abundance of Discoveries Awaits. PLANTS (BASEL, SWITZERLAND) 2023; 12:3398. [PMID: 37836138 PMCID: PMC10574481 DOI: 10.3390/plants12193398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023]
Abstract
The role of Calcium ions (Ca2+) is extensively documented and comprehensively understood in eukaryotic organisms. Nevertheless, emerging insights, primarily derived from studies on human pathogenic bacteria, suggest that this ion also plays a pivotal role in prokaryotes. In this review, our primary focus will be on unraveling the intricate Ca2+ toolkit within prokaryotic organisms, with particular emphasis on its implications for plant growth-promoting rhizobacteria (PGPR). We undertook an in silico exploration to pinpoint and identify some of the proteins described in the existing literature, including prokaryotic Ca2+ channels, pumps, and exchangers that are responsible for regulating intracellular Calcium concentration ([Ca2+]i), along with the Calcium-binding proteins (CaBPs) that play a pivotal role in sensing and transducing this essential cation. These investigations were conducted in four distinct PGPR strains: Pseudomonas chlororaphis subsp. aurantiaca SMMP3, P. donghuensis SVBP6, Pseudomonas sp. BP01, and Methylobacterium sp. 2A, which have been isolated and characterized within our research laboratories. We also present preliminary experimental data to evaluate the influence of exogenous Ca2+ concentrations ([Ca2+]ex) on the growth dynamics of these strains.
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Affiliation(s)
- Betina Cecilia Agaras
- Laboratory of Physiology and Genetics of Plant Probiotic Bacteria (LFGBBP), Centre of Biochemistry and Microbiology of Soils, National University of Quilmes, Bernal B1876BXD, Argentina
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
| | - Cecilia Eugenia María Grossi
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
- Laboratory of Plant Signal Transduction, Institute of Genetic Engineering and Molecular Biology (INGEBI), National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina
| | - Rita María Ulloa
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
- Laboratory of Plant Signal Transduction, Institute of Genetic Engineering and Molecular Biology (INGEBI), National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina
- Biochemistry Department, Faculty of Exact and Natural Sciences, University of Buenos Aires (FCEN-UBA), Buenos Aires C1428EGA, Argentina
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Salinity-Induced Cytosolic Alkaline Shifts in Arabidopsis Roots Require the SOS Pathway. Int J Mol Sci 2023; 24:ijms24043549. [PMID: 36834961 PMCID: PMC9960406 DOI: 10.3390/ijms24043549] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/27/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Plants have evolved elaborate mechanisms to sense, respond to and overcome the detrimental effects of high soil salinity. The role of calcium transients in salinity stress signaling is well established, but the physiological significance of concurrent salinity-induced changes in cytosolic pH remains largely undefined. Here, we analyzed the response of Arabidopsis roots expressing the genetically encoded ratiometric pH-sensor pHGFP fused to marker proteins for the recruitment of the sensor to the cytosolic side of the tonoplast (pHGFP-VTI11) and the plasma membrane (pHGFP-LTI6b). Salinity elicited a rapid alkalinization of cytosolic pH (pHcyt) in the meristematic and elongation zone of wild-type roots. The pH-shift near the plasma membrane preceded that at the tonoplast. In pH-maps transversal to the root axis, the epidermis and cortex had cells with a more alkaline pHcyt relative to cells in the stele in control conditions. Conversely, seedlings treated with 100 mM NaCl exhibited an increased pHcyt in cells of the vasculature relative to the external layers of the root, and this response occurred in both reporter lines. These pHcyt changes were substantially reduced in mutant roots lacking a functional SOS3/CBL4 protein, suggesting that the operation of the SOS pathway mediated the dynamics of pHcyt in response to salinity.
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Giridhar M, Meier B, Imani J, Kogel KH, Peiter E, Vothknecht UC, Chigri F. Comparative analysis of stress-induced calcium signals in the crop species barley and the model plant Arabidopsis thaliana. BMC PLANT BIOLOGY 2022; 22:447. [PMID: 36114461 PMCID: PMC9482192 DOI: 10.1186/s12870-022-03820-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Plants are continuously exposed to changing environmental conditions and biotic attacks that affect plant growth. In crops, the inability to respond appropriately to stress has strong detrimental effects on agricultural production and yield. Ca2+ signalling plays a fundamental role in the response of plants to most abiotic and biotic stresses. However, research on stimulus-specific Ca2+ signals has mostly been pursued in Arabidopsis thaliana, while in other species these events are little investigated . RESULTS In this study, we introduced the Ca2+ reporter-encoding gene APOAEQUORIN into the crop species barley (Hordeum vulgare). Measurements of the dynamic changes in [Ca2+]cyt in response to various stimuli such as NaCl, mannitol, H2O2, and flagellin 22 (flg22) revealed the occurrence of dose- as well as tissue-dependent [Ca2+]cyt transients. Moreover, the Ca2+ signatures were unique for each stimulus, suggesting the involvement of different Ca2+ signalling components in the corresponding stress response. Alongside, the barley Ca2+ signatures were compared to those produced by the phylogenetically distant model plant Arabidopsis. Notable differences in temporal kinetics and dose responses were observed, implying species-specific differences in stress response mechanisms. The plasma membrane Ca2+ channel blocker La3+ strongly inhibited the [Ca2+]cyt response to all tested stimuli, indicating a critical role of extracellular Ca2+ in the induction of stress-associated Ca2+ signatures in barley. Moreover, by analysing spatio-temporal dynamics of the [Ca2+]cyt transients along the developmental gradient of the barley leaf blade we demonstrate that different parts of the barley leaf show quantitative differences in [Ca2+]cyt transients in response to NaCl and H2O2. There were only marginal differences in the response to flg22, indicative of developmental stage-dependent Ca2+ responses specifically to NaCl and H2O2. CONCLUSION This study reveals tissue-specific Ca2+ signals with stimulus-specific kinetics in the crop species barley, as well as quantitative differences along the barley leaf blade. A number of notable differences to the model plants Arabidopsis may be linked to different stimulus sensitivity. These transgenic barley reporter lines thus present a valuable tool to further analyse mechanisms of Ca2+ signalling in this crop and to gain insights into the variation of Ca2+-dependent stress responses between stress-susceptible and -resistant species.
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Affiliation(s)
- Maya Giridhar
- Plant Cell Biology, IZMB, University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Bastian Meier
- Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Betty Heimann Str. 3, D-06120, Halle (Saale), Germany
| | - Jafargholi Imani
- Research Centre for BioSystems, Land Use and Nutrition (IFZ), Institute for Phytopathology, Justus Liebig University Gießen, Heinrich-Buff-Ring 26-32, D-35392, Gießen, Germany
| | - Karl-Heinz Kogel
- Research Centre for BioSystems, Land Use and Nutrition (IFZ), Institute for Phytopathology, Justus Liebig University Gießen, Heinrich-Buff-Ring 26-32, D-35392, Gießen, Germany
| | - Edgar Peiter
- Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Betty Heimann Str. 3, D-06120, Halle (Saale), Germany.
| | - Ute C Vothknecht
- Plant Cell Biology, IZMB, University of Bonn, Kirschallee 1, D-53115, Bonn, Germany.
| | - Fatima Chigri
- Plant Cell Biology, IZMB, University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
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Feng Y, Zheng K, Lin X, Huang J. Plant growth, physiological variation and homological relationship of Cyclocarya species in ex situ conservation. CONSERVATION PHYSIOLOGY 2022; 10:coac016. [PMID: 35539008 PMCID: PMC9082347 DOI: 10.1093/conphys/coac016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 11/25/2021] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Natural forests of Cyclocarya paliurus have been seriously damaged because of the extreme demand for leaf medicinal uses, making conservation of this valuable, medicinal woody species necessary. Because of geographical differentiation and diverse adaptability, in this study we analysed the variations in plant growth and physiological response to environmental factors at a resource plantation of ex situ conservation and determined the homological relationships between local provenance (from Fujian Province, FJ) and introduced provenances showing high-survival rate and better growth (from Zhejiang, Hubei, Guizhou and Jiangxi Province). Our results suggested the following: (i) Plant growth: FJ had the highest plant height but not the largest basal diameter in comparison to that of other provenances. (ii) Physiological responses during the growth periods: water content in leaf of FJ had similar change with that of other provenances, except for the provenance from Guizhou Province; total soluble sugar content in leaf of FJ was more than that of other provenances; calcium content in leaf of all provenances was higher as compared to K, Mg and Na; the highest activity among four kinds of antioxidant enzymes in all provenances was superoxide dismutase, then was polyphenol oxidase and peroxidase, finally was catalase; and total flavonoid among three kinds of secondary metabolites in all provenances showed the greatest content, followed by polysaccharides and total triterpenoid. (iii) Relation analysis: plant growth and physiological responses related with environmental factors, especially temperature and precipitation. (iv) Homological relationships: leaf characteristics among six provenances varied in colour, area and common petiole length, but not the shape of leaf base or apex. Cyclocarya paliurus distributed in Fujian Province showed a very close homological relationship with that distributed in Zhejiang Province by simple sequence repeat. These findings will provide knowledge on physiological response to environmental factors and aid to select suitable provenances for Cyclocarya cultivation.
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Affiliation(s)
| | - Kailing Zheng
- Quanzhou Institute of Agricultural Science, Chidian Town, Jinjiang City, Fujian Province, 362000, China
| | - Xiulian Lin
- Horticulture Department, Huizhou Engineering Vocational College, Xiaojinkou Street, Guangdong Province, 561023, China
| | - Junpo Huang
- School of Resource and Environmental Science, Quanzhou Normal University, Donghai Street, Quanzhou City, Fujian Province, 362000, China
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Hashimoto K, Koselski M, Tsuboyama S, Dziubinska H, Trębacz K, Kuchitsu K. Functional Analyses of the Two Distinctive Types of Two-Pore Channels and the Slow Vacuolar Channel in Marchantia polymorpha. PLANT & CELL PHYSIOLOGY 2022; 63:163-175. [PMID: 34936705 DOI: 10.1093/pcp/pcab176] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/23/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
The two-pore channel (TPC) family is widely conserved in eukaryotes. Many vascular plants, including Arabidopsis and rice, possess a single TPC gene which functions as a slow vacuolar (SV) channel-voltage-dependent cation-permeable channel located in the vacuolar membrane (tonoplast). On the other hand, a liverwort Marchantia polymorpha genome encodes three TPC homologs: MpTPC1 is similar to TPCs in vascular plants (type 1 TPC), while MpTPC2 and MpTPC3 are classified into a distinctive group (type 2 TPC). Phylogenetic analysis suggested that the type 2 TPC emerged before the land colonization in plant evolution and was lost in vascular plants and hornworts. All of the three MpTPCs were shown to be localized at the tonoplast. We generated knockout mutants of tpc1, tpc2, tpc3 and tpc2 tpc3 double mutant by clustered regularly interspaced short palindromic repeats/Cas9 genome editing and performed patch-clamp analyses of isolated vacuoles. The SV channel activity was abolished in the Mptpc1 loss-of-function mutant (Mptpc1-1KO), while Mptpc2-1KO, Mptpc3-1KO and Mptpc2-2/tpc3-2KO double mutant exhibited similar activity to the wild type, indicating that MpTPC1 (type 1) is solely responsible for the SV channel activity. Activators of mammalian TPCs, phosphatidylinositol-3,5-bisphosphate and nicotinic acid adenine dinucleotide phosphate, did not affect the ion channel activity of any MpTPCs. These results indicate that the type 1 TPCs, which are well conserved in all land plant species, encode the SV channel, while the type 2 TPCs likely encode other tonoplast cation channel(s) distinct from the SV channel and animal TPCs.
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Affiliation(s)
| | - Mateusz Koselski
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Shoko Tsuboyama
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
| | - Halina Dziubinska
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Kazimierz Trębacz
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
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Cortese E, Moscatiello R, Pettiti F, Carraretto L, Baldan B, Frigerio L, Vothknecht UC, Szabo I, De Stefani D, Brini M, Navazio L. Monitoring calcium handling by the plant endoplasmic reticulum with a low-Ca 2+ -affinity targeted aequorin reporter. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:1014-1027. [PMID: 34837294 PMCID: PMC9299891 DOI: 10.1111/tpj.15610] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 10/05/2021] [Accepted: 11/22/2021] [Indexed: 05/15/2023]
Abstract
Precise measurements of dynamic changes in free Ca2+ concentration in the lumen of the plant endoplasmic reticulum (ER) have been lacking so far, despite increasing evidence for the contribution of this intracellular compartment to Ca2+ homeostasis and signalling in the plant cell. In the present study, we targeted an aequorin chimera with reduced Ca2+ affinity to the ER membrane and facing the ER lumen. To this aim, the cDNA for a low-Ca2+ -affinity aequorin variant (AEQmut) was fused to the nucleotide sequence encoding a non-cleavable N-terminal ER signal peptide (fl2). The correct targeting of fl2-AEQmut was confirmed by immunocytochemical analyses in transgenic Arabidopsis thaliana (Arabidopsis) seedlings. An experimental protocol well-established in animal cells - consisting of ER Ca2+ depletion during photoprotein reconstitution followed by ER Ca2+ refilling - was applied to carry out ER Ca2+ measurements in planta. Rapid and transient increases of the ER luminal Ca2+ concentration ([Ca2+ ]ER ) were recorded in response to different environmental stresses, displaying stimulus-specific Ca2+ signatures. The comparative analysis of ER and chloroplast Ca2+ dynamics indicates a complex interplay of these organelles in shaping cytosolic Ca2+ signals during signal transduction events. Our data highlight significant differences in basal [Ca2+ ]ER and Ca2+ handling by plant ER compared to the animal counterpart. The set-up of an ER-targeted aequorin chimera extends and complements the currently available toolkit of organelle-targeted Ca2+ indicators by adding a reporter that improves our quantitative understanding of Ca2+ homeostasis in the plant endomembrane system.
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Affiliation(s)
- Enrico Cortese
- Department of BiologyUniversity of PadovaPadova35131Italy
| | | | | | | | - Barbara Baldan
- Department of BiologyUniversity of PadovaPadova35131Italy
- Botanical GardenUniversity of PadovaPadova35123Italy
| | | | - Ute C. Vothknecht
- Plant Cell BiologyInstitute of Cellular and Molecular BotanyUniversity of BonnBonnD‐53115Germany
| | - Ildiko Szabo
- Department of BiologyUniversity of PadovaPadova35131Italy
- Botanical GardenUniversity of PadovaPadova35123Italy
| | - Diego De Stefani
- Department of Biomedical SciencesUniversity of PadovaPadova35131Italy
| | - Marisa Brini
- Department of BiologyUniversity of PadovaPadova35131Italy
| | - Lorella Navazio
- Department of BiologyUniversity of PadovaPadova35131Italy
- Botanical GardenUniversity of PadovaPadova35123Italy
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de Souza Mateus N, Oliveira Ferreira EV, Florentino AL, Vicente Ferraz A, Domec JC, Jordan-Meille L, Bendassolli JA, Moraes Gonçalves JL, Lavres J. Potassium supply modulates Eucalyptus leaf water-status under PEG-induced osmotic stress: integrating leaf gas exchange, carbon and nitrogen isotopic composition and plant growth. TREE PHYSIOLOGY 2022; 42:59-70. [PMID: 34302172 DOI: 10.1093/treephys/tpab095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
The objective of this study was to quantify the effect of potassium (K) supply on osmotic adjustment and drought avoidance mechanisms of Eucalyptus seedlings growing under short-term water stress. The effects of K supply on plant growth, nutritional status, leaf gas exchange parameters, leaf water potential (Ψw), leaf area (LA), stomatal density (SD), leaf carbon (C) and nitrogen (N) isotopic compositions (δ13C and δ15N ‰) and leaf C/N ratio under polyethylene glycol (PEG)-induced water deficit were measured. Under both control (non-PEG) and osmotic stress (+PEG) conditions, K supply increased plant growth, boosting dry matter yield with decreased C/N leaf ratio and δ15N ‰ values. The +PEG significantly reduced LA, plant growth, dry matter yield, Ψw, number of stomata per plant and leaf gas exchange, relative to non-PEG condition. Potassium supply alleviated osmotic-induced alterations in Eucalyptus seedlings by better regulating leaf development as well as SD, thus improving the rate of leaf gas exchange parameters, mesophyll conductance to CO2 (lower δ13C ‰ values) and water use efficiency (WUE). Consequently, K-supplied plants under drought better acclimated to osmotic stress than K-deficient plants, which in turn induced lower CO2 assimilation and dry matter yield, as well as higher leaf δ13C ‰ and δ15N ‰ values. In conclusion, management practices should seek to optimize K-nutrition to improve WUE, photosynthesis-related parameters and plant growth under water deficit conditions.
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Affiliation(s)
- Nikolas de Souza Mateus
- Center for Nuclear Energy in Agriculture, University of São Paulo, São Paulo 13400-970, Brazil
| | | | | | | | | | | | | | | | - José Lavres
- Center for Nuclear Energy in Agriculture, University of São Paulo, São Paulo 13400-970, Brazil
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Zhang N, Feng X, Zeng Q, Lin H, Wu Z, Gao X, Huang Y, Wu J, Qi Y. Integrated Analysis of miRNAs Associated With Sugarcane Responses to Low-Potassium Stress. FRONTIERS IN PLANT SCIENCE 2022; 12:750805. [PMID: 35058942 PMCID: PMC8763679 DOI: 10.3389/fpls.2021.750805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/29/2021] [Indexed: 06/14/2023]
Abstract
Sugarcane is among the most important global crops and a key bioenergy source. Sugarcane production is restricted by limited levels of available soil potassium (K+). The ability of plants to respond to stressors can be regulated by a range of microRNAs (miRNAs). However, there have been few studies regarding the roles of miRNAs in the regulation of sugarcane responses to K+-deficiency. To understand how these non-coding RNAs may influence sugarcane responses to low-K+ stress, we conducted expression profiling of miRNAs in sugarcane roots under low-K+ conditions via high-throughput sequencing. This approach led to the identification of 324 and 42 known and novel miRNAs, respectively, of which 36 were found to be differentially expressed miRNAs (DEMs) under low-K+ conditions. These results also suggested that miR156-x/z and miR171-x are involved in these responses as potential regulators of lateral root formation and the ethylene signaling pathway, respectively. A total of 705 putative targets of these DEMs were further identified through bioinformatics predictions and degradome analyses, and GO and KEGG enrichment analyses revealed these target mRNAs to be enriched for catalytic activity, binding functions, metabolic processes, plant hormone signal transduction, and mitogen-activated protein kinase (MAPK) signaling. In summary, these data provide an overview of the roles of miRNAs in the regulation of sugarcane response to low-K+ conditions.
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Affiliation(s)
- Nannan Zhang
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiaomin Feng
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Qiaoying Zeng
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Huanzhang Lin
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Zilin Wu
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiaoning Gao
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Yonghong Huang
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Jiayun Wu
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
| | - Yongwen Qi
- Guangdong Sugarcane Genetic Improvement Engineering Center, Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou, China
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He J, Rössner N, Hoang MTT, Alejandro S, Peiter E. Transport, functions, and interaction of calcium and manganese in plant organellar compartments. PLANT PHYSIOLOGY 2021; 187:1940-1972. [PMID: 35235665 PMCID: PMC8890496 DOI: 10.1093/plphys/kiab122] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 03/02/2021] [Indexed: 05/05/2023]
Abstract
Calcium (Ca2+) and manganese (Mn2+) are essential elements for plants and have similar ionic radii and binding coordination. They are assigned specific functions within organelles, but share many transport mechanisms to cross organellar membranes. Despite their points of interaction, those elements are usually investigated and reviewed separately. This review takes them out of this isolation. It highlights our current mechanistic understanding and points to open questions of their functions, their transport, and their interplay in the endoplasmic reticulum (ER), vesicular compartments (Golgi apparatus, trans-Golgi network, pre-vacuolar compartment), vacuoles, chloroplasts, mitochondria, and peroxisomes. Complex processes demanding these cations, such as Mn2+-dependent glycosylation or systemic Ca2+ signaling, are covered in some detail if they have not been reviewed recently or if recent findings add to current models. The function of Ca2+ as signaling agent released from organelles into the cytosol and within the organelles themselves is a recurrent theme of this review, again keeping the interference by Mn2+ in mind. The involvement of organellar channels [e.g. glutamate receptor-likes (GLR), cyclic nucleotide-gated channels (CNGC), mitochondrial conductivity units (MCU), and two-pore channel1 (TPC1)], transporters (e.g. natural resistance-associated macrophage proteins (NRAMP), Ca2+ exchangers (CAX), metal tolerance proteins (MTP), and bivalent cation transporters (BICAT)], and pumps [autoinhibited Ca2+-ATPases (ACA) and ER Ca2+-ATPases (ECA)] in the import and export of organellar Ca2+ and Mn2+ is scrutinized, whereby current controversial issues are pointed out. Mechanisms in animals and yeast are taken into account where they may provide a blueprint for processes in plants, in particular, with respect to tunable molecular mechanisms of Ca2+ versus Mn2+ selectivity.
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Affiliation(s)
- Jie He
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Nico Rössner
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Minh T T Hoang
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Santiago Alejandro
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Edgar Peiter
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Author for communication:
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12
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Hydrogen Sulfide in Plants: Crosstalk with Other Signal Molecules in Response to Abiotic Stresses. Int J Mol Sci 2021; 22:ijms222112068. [PMID: 34769505 PMCID: PMC8585011 DOI: 10.3390/ijms222112068] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 12/21/2022] Open
Abstract
Hydrogen sulfide (H2S) has recently been considered as a crucial gaseous transmitter occupying extensive roles in physiological and biochemical processes throughout the life of plant species. Furthermore, plenty of achievements have been announced regarding H2S working in combination with other signal molecules to mitigate environmental damage, such as nitric oxide (NO), abscisic acid (ABA), calcium ion (Ca2+), hydrogen peroxide (H2O2), salicylic acid (SA), ethylene (ETH), jasmonic acid (JA), proline (Pro), and melatonin (MT). This review summarizes the current knowledge within the mechanism of H2S and the above signal compounds in response to abiotic stresses in plants, including maintaining cellular redox homeostasis, exchanging metal ion transport, regulating stomatal aperture, and altering gene expression and enzyme activities. The potential relationship between H2S and other signal transmitters is also proposed and discussed.
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13
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Malabarba J, Meents AK, Reichelt M, Scholz SS, Peiter E, Rachowka J, Konopka-Postupolska D, Wilkins KA, Davies JM, Oelmüller R, Mithöfer A. ANNEXIN1 mediates calcium-dependent systemic defense in Arabidopsis plants upon herbivory and wounding. THE NEW PHYTOLOGIST 2021; 231:243-254. [PMID: 33586181 DOI: 10.1111/nph.17277] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 02/05/2021] [Indexed: 05/21/2023]
Abstract
Cellular calcium (Ca) transients are endogenous signals involved in local and systemic signaling and defense activation upon environmental stress, including wounding and herbivory. Still, not all Ca2+ channels contributing to the signaling have been identified, nor are their modes of action fully known. Plant annexins are proteins capable of binding to anionic phospholipids and can exhibit Ca channel-like activity. Arabidopsis ANNEXIN1 (ANN1) is suggested to contribute to Ca transport. Here, we report that wounding and simulated-herbivory-induced cytosolic free Ca elevation was impaired in systemic leaves in ann1 loss-of-function plants. We provide evidence for a role of ANN1 in local and systemic defense of plants attacked by herbivorous Spodoptera littoralis larvae. Bioassays identified ANN1 as a positive defense regulator. Spodoptera littoralis feeding on ann1 gained significantly more weight than larvae feeding on wild-type, whereas those feeding on ANN1-overexpressing lines gained less weight. Herbivory and wounding both induced defense-related responses on treated leaves, such as jasmonate accumulation and defense gene expression. These responses remained local and were strongly reduced in systemic leaves in ann1 plants. Our results indicate that ANN1 plays an important role in activation of systemic rather than local defense in plants attacked by herbivorous insects.
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Affiliation(s)
- Jaiana Malabarba
- Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
- Postgraduate Program in Cell and Molecular Biology, Biotechnology Center, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90040-060, Brazil
| | - Anja K Meents
- Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
- Plant Physiology, Matthias-Schleiden-Institute for Genetics, Bioinformatics and Molecular Botany, Faculty of Biological Sciences, Friedrich-Schiller-University Jena, Jena, 07743, Germany
| | - Michael Reichelt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Sandra S Scholz
- Plant Physiology, Matthias-Schleiden-Institute for Genetics, Bioinformatics and Molecular Botany, Faculty of Biological Sciences, Friedrich-Schiller-University Jena, Jena, 07743, Germany
| | - Edgar Peiter
- Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, Halle (Saale), 06120, Germany
| | - Julia Rachowka
- Plant Protein Phosphorylation Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, 02-106, Poland
| | - Dorota Konopka-Postupolska
- Plant Protein Phosphorylation Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, 02-106, Poland
| | - Katie A Wilkins
- Department of Plant Sciences, University of Cambridge, Cambridge, CB24 6DG, UK
| | - Julia M Davies
- Department of Plant Sciences, University of Cambridge, Cambridge, CB24 6DG, UK
| | - Ralf Oelmüller
- Plant Physiology, Matthias-Schleiden-Institute for Genetics, Bioinformatics and Molecular Botany, Faculty of Biological Sciences, Friedrich-Schiller-University Jena, Jena, 07743, Germany
| | - Axel Mithöfer
- Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
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14
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Li JH, Fan LF, Zhao DJ, Zhou Q, Yao JP, Wang ZY, Huang L. Plant electrical signals: A multidisciplinary challenge. JOURNAL OF PLANT PHYSIOLOGY 2021; 261:153418. [PMID: 33887526 DOI: 10.1016/j.jplph.2021.153418] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/06/2021] [Accepted: 04/06/2021] [Indexed: 05/15/2023]
Abstract
Plant electrical signals, an early event in the plant-stimulus interaction, rapidly transmit information generated by the stimulus to other organs, and even the whole plant, to promote the corresponding response and trigger a regulatory cascade. In recent years, many promising state-of-the-art technologies applicable to study plant electrophysiology have emerged. Research focused on expression of genes associated with electrical signals has also proliferated. We propose that it is appropriate for plant electrical signals to be considered in the form of a "plant electrophysiological phenotype". This review synthesizes research on plant electrical signals from a novel, interdisciplinary perspective, which is needed to improve the efficient aggregation and use of plant electrical signal data and to expedite interpretation of plant electrical signals.
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Affiliation(s)
- Jin-Hai Li
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, Beijing, 100083, China
| | - Li-Feng Fan
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, Beijing, 100083, China
| | - Dong-Jie Zhao
- Institute for Future (IFF), Qingdao University, Qingdao, 266071, China
| | - Qiao Zhou
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, Beijing, 100083, China
| | - Jie-Peng Yao
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, Beijing, 100083, China
| | - Zhong-Yi Wang
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, Beijing, 100083, China; Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, Beijing, 100083, China.
| | - Lan Huang
- College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, Beijing, 100083, China.
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15
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Johns S, Hagihara T, Toyota M, Gilroy S. The fast and the furious: rapid long-range signaling in plants. PLANT PHYSIOLOGY 2021; 185:694-706. [PMID: 33793939 PMCID: PMC8133610 DOI: 10.1093/plphys/kiaa098] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/08/2020] [Indexed: 05/04/2023]
Abstract
Plants possess a systemic signaling system whereby local stimuli can lead to rapid, plant-wide responses. In addition to the redistribution of chemical messengers that range from RNAs and peptides to hormones and metabolites, a communication system acting through the transmission of electrical, Ca2+, reactive oxygen species and potentially even hydraulic signals has also been discovered. This latter system can propagate signals across many cells each second and researchers are now beginning to uncover the molecular machineries behind this rapid communications network. Thus, elements such as the reactive oxygen species producing NAPDH oxidases and ion channels of the two pore channel, glutamate receptor-like and cyclic nucleotide gated families are all required for the rapid propagation of these signals. Upon arrival at their distant targets, these changes trigger responses ranging from the production of hormones, to changes in the levels of primary metabolites and shifts in patterns of gene expression. These systemic responses occur within seconds to minutes of perception of the initial, local signal, allowing for the rapid deployment of plant-wide responses. For example, an insect starting to chew on just a single leaf triggers preemptive antiherbivore defenses throughout the plant well before it has a chance to move on to the next leaf on its menu.
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Affiliation(s)
- Sarah Johns
- Department of Botany, University of Wisconsin–Madison, Birge Hall, 430 Lincoln Drive, Madison, WI 35706, USA
| | - Takuma Hagihara
- Department of Biochemistry and Molecular Biology, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Masatsugu Toyota
- Department of Biochemistry and Molecular Biology, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Simon Gilroy
- Department of Botany, University of Wisconsin–Madison, Birge Hall, 430 Lincoln Drive, Madison, WI 35706, USA
- Author for communication:
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16
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Zhu L, Dou L, Shang H, Li H, Yu J, Xiao G. GhPIPLC2D promotes cotton fiber elongation by enhancing ethylene biosynthesis. iScience 2021; 24:102199. [PMID: 33718844 PMCID: PMC7921840 DOI: 10.1016/j.isci.2021.102199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 01/13/2021] [Accepted: 02/12/2021] [Indexed: 11/29/2022] Open
Abstract
Inositol-1,4,5-trisphosphate (IP3) is an important second messenger and one of the products of phosphoinositide-specific phospholipase C (PIPLC)-mediated phosphatidylinositol (4,5) bisphosphate (PIP2) hydrolysis. However, the function of IP3 in cotton is unknown. Here, we characterized the function of GhPIPLC2D in cotton fiber elongation. GhPIPLC2D was preferentially expressed in elongating fibers. Suppression of GhPIPLC2D transcripts resulted in shorter fibers and decreased IP3 accumulation and ethylene biosynthesis. Exogenous application of linolenic acid (C18:3) and phosphatidylinositol (PI), the precursor of IP3, improved IP3 and myo-inositol-1,2,3,4,5,6-hexakisphosphate (IP6) accumulation, as well as ethylene biosynthesis. Moreover, fiber length in GhPIPLC2D-silenced plant was reduced after exogenous application of IP6 and ethylene. These results indicate that GhPIPLC2D positively regulates fiber elongation and IP3 promotes fiber elongation by enhancing ethylene biosynthesis. Our study broadens our understanding of the function of IP3 in cotton fiber elongation and highlights the possibility of cultivating better cotton varieties by manipulating GhPIPLC2D in the future. GhPIPLC2D positively regulates cotton fiber elongation GhPIPLC2D cleaves PIP2 into IP3, which could be phosphorylated to IP6 IP6 enhances fiber elongation via improving ethylene biosynthesis
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Affiliation(s)
- Liping Zhu
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Lingling Dou
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang 712000, China
| | - Haihong Shang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 450000, China
| | - Hongbin Li
- College of Life Sciences, Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, Shihezi University, Shihezi 832003, China
| | - Jianing Yu
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Guanghui Xiao
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
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17
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Pottosin I, Olivas-Aguirre M, Dobrovinskaya O, Zepeda-Jazo I, Shabala S. Modulation of Ion Transport Across Plant Membranes by Polyamines: Understanding Specific Modes of Action Under Stress. FRONTIERS IN PLANT SCIENCE 2021; 11:616077. [PMID: 33574826 PMCID: PMC7870501 DOI: 10.3389/fpls.2020.616077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/14/2020] [Indexed: 05/20/2023]
Abstract
This work critically discusses the direct and indirect effects of natural polyamines and their catabolites such as reactive oxygen species and γ-aminobutyric acid on the activity of key plant ion-transporting proteins such as plasma membrane H+ and Ca2+ ATPases and K+-selective and cation channels in the plasma membrane and tonoplast, in the context of their involvement in stress responses. Docking analysis predicts a distinct binding for putrescine and longer polyamines within the pore of the vacuolar TPC1/SV channel, one of the key determinants of the cell ionic homeostasis and signaling under stress conditions, and an additional site for spermine, which overlaps with the cytosolic regulatory Ca2+-binding site. Several unresolved problems are summarized, including the correct estimates of the subcellular levels of polyamines and their catabolites, their unexplored effects on nucleotide-gated and glutamate receptor channels of cell membranes and Ca2+-permeable and K+-selective channels in the membranes of plant mitochondria and chloroplasts, and pleiotropic mechanisms of polyamines' action on H+ and Ca2+ pumps.
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Affiliation(s)
- Igor Pottosin
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan, China
- Biomedical Center, University of Colima, Colima, Mexico
| | | | | | - Isaac Zepeda-Jazo
- Food Genomics Department, Universidad de La Ciénega del Estado de Michoacán de Ocampo, Sahuayo, Mexico
| | - Sergey Shabala
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan, China
- Tasmanian Institute for Agriculture, College of Science and Engineering, University of Tasmania, Hobart, TAS, Australia
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18
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Cubero-Font P, De Angeli A. Connecting vacuolar and plasma membrane transport networks. THE NEW PHYTOLOGIST 2021; 229:755-762. [PMID: 33007120 DOI: 10.1111/nph.16983] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/01/2020] [Indexed: 05/12/2023]
Abstract
The coordinated control of ion transport across the two major membranes of differentiated plant cells, the plasma and the vacuolar membranes, is fundamental in cell physiology. The stomata responses to the fluctuating environmental conditions are an illustrative example. Indeed, they rely on the coordination of ion fluxes between the different cell compartments. The cytosolic environment, which is an interface between intracellular compartments, and the activity of the ion transporters localised in the different membranes influence one each other. Here we analyse the molecular mechanisms connecting and modulating the transport processes at both the plasma and the vacuolar membranes of guard cells.
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Affiliation(s)
- Paloma Cubero-Font
- BPMP, Université de Montpellier, CNRS, INRAE, Montpellier SupAgro, Montpellier, 34060, France
| | - Alexis De Angeli
- BPMP, Université de Montpellier, CNRS, INRAE, Montpellier SupAgro, Montpellier, 34060, France
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19
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Ismail A, El-Sharkawy I, Sherif S. Salt Stress Signals on Demand: Cellular Events in the Right Context. Int J Mol Sci 2020; 21:ijms21113918. [PMID: 32486204 PMCID: PMC7313037 DOI: 10.3390/ijms21113918] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 12/19/2022] Open
Abstract
Plant stress is a real dilemma; it puzzles plant biologists and is a global problem that negatively affects people’s daily lives. Of particular interest is salinity, because it represents one of the major water-related stress types. We aimed to determine the signals that guide the cellular-related events where various adaptation mechanisms cross-talk to cope with salinity-related water stress in plants. In an attempt to unravel these mechanisms and introduce cellular events in the right context, we expansively discussed how salt-related signals are sensed, with particular emphasis on aquaporins, nonselective cation channels (NSCCs), and glycosyl inositol phosphorylceramide (GIPC). We also elaborated on the critical role Ca2+, H+, and ROS in mediating signal transduction pathways associated with the response and tolerance to salt stress. In addition, the fragmentary results from the literature were compiled to develop a harmonized, informational, and contemplative model that is intended to improve our perception of these adaptative mechanisms and set a common platform for plant biologists to identify intriguing research questions in this area.
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Affiliation(s)
- Ahmed Ismail
- Department of Horticulture, Faculty of Agriculture, Damanhour University, P.O. Box 22516, Damanhour, Egypt;
| | - Islam El-Sharkawy
- Florida A&M University, Center for Viticulture and Small Fruit Research. 6361 Mahan Drive, Tallahassee, FL 32308, USA;
| | - Sherif Sherif
- Alson H. Smith Jr. Agricultural Research and Extension Center, School of Plant and Environmental Sciences, Virginia Tech, Winchester, VA 22062, USA
- Correspondence: ; Tel.: +1-540-232-6035
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20
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Plasencia FA, Estrada Y, Flores FB, Ortíz-Atienza A, Lozano R, Egea I. The Ca 2+ Sensor Calcineurin B-Like Protein 10 in Plants: Emerging New Crucial Roles for Plant Abiotic Stress Tolerance. FRONTIERS IN PLANT SCIENCE 2020; 11:599944. [PMID: 33519853 PMCID: PMC7843506 DOI: 10.3389/fpls.2020.599944] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 12/09/2020] [Indexed: 05/14/2023]
Abstract
Ca2+ is a second messenger that mediates plant responses to abiotic stress; Ca2+ signals need to be decoded by Ca2+ sensors that translate the signal into physiological, metabolic, and molecular responses. Recent research regarding the Ca2+ sensor CALCINEURIN B-LIKE PROTEIN 10 (CBL10) has resulted in important advances in understanding the function of this signaling component during abiotic stress tolerance. Under saline conditions, CBL10 function was initially understood to be linked to regulation of Na+ homeostasis, protecting plant shoots from salt stress. During this process, CBL10 interacts with the CBL-interacting protein kinase 24 (CIPK24, SOS2), this interaction being localized at both the plasma and vacuolar (tonoplast) membranes. Interestingly, recent studies have exposed that CBL10 is a regulator not only of Na+ homeostasis but also of Ca2+ under salt stress, regulating Ca2+ fluxes in vacuoles, and also at the plasma membrane. This review summarizes new research regarding functions of CBL10 in plant stress tolerance, predominantly salt stress, as this is the most commonly studied abiotic stress associated with the function of this regulator. Special focus has been placed on some aspects that are still unclear. We also pay particular attention on the proven versatility of CBL10 to activate (in a CIPK-dependent manner) or repress (by direct interaction) downstream targets, in different subcellular locations. These in turn appear to be the link through which CBL10 could be a key master regulator of stress signaling in plants and also a crucial participant in fruit development and quality, as disruption of CBL10 results in inadequate Ca2+ partitioning in plants and fruit. New emerging roles associated with other abiotic stresses in addition to salt stress, such as drought, flooding, and K+ deficiency, are also addressed in this review. Finally, we provide an outline of recent advances in identification of potential targets of CBL10, as CBL10/CIPKs complexes and as CBL10 direct interactions. The aim is to showcase new research regarding this master regulator of abiotic stress tolerance that may be essential to the maintenance of crop productivity under abiotic stress. This is particularly pertinent when considering the scenario of a projected increase in extreme environmental conditions due to climate change.
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Affiliation(s)
- Felix A. Plasencia
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Espinardo, Murcia, Spain
| | - Yanira Estrada
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Espinardo, Murcia, Spain
| | - Francisco B. Flores
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Espinardo, Murcia, Spain
| | - Ana Ortíz-Atienza
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, Spain
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, Spain
| | - Isabel Egea
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Espinardo, Murcia, Spain
- *Correspondence: Isabel Egea,
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21
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Malinich EA, Wang K, Mukherjee PK, Kolomiets M, Kenerley CM. Differential expression analysis of Trichoderma virens RNA reveals a dynamic transcriptome during colonization of Zea mays roots. BMC Genomics 2019; 20:280. [PMID: 30971198 PMCID: PMC6458689 DOI: 10.1186/s12864-019-5651-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 03/27/2019] [Indexed: 12/16/2022] Open
Abstract
Background Trichoderma spp. are majorly composed of plant-beneficial symbionts widely used in agriculture as bio-control agents. Studying the mechanisms behind Trichoderma-derived plant benefits has yielded tangible bio-industrial products. To better take advantage of this fungal-plant symbiosis it is necessary to obtain detailed knowledge of which genes Trichoderma utilizes during interaction with its plant host. In this study, we explored the transcriptional activity undergone by T. virens during two phases of symbiosis with maize; recognition of roots and after ingress into the root cortex. Results We present a model of T. virens – maize interaction wherein T. virens experiences global repression of transcription upon recognition of maize roots and then induces expression of a broad spectrum of genes during colonization of maize roots. The genes expressed indicate that, during colonization of maize roots, T. virens modulates biosynthesis of phytohormone-like compounds, secretes a plant-environment specific array of cell wall degrading enzymes and secondary metabolites, remodels both actin-based and cell membrane structures, and shifts metabolic activity. We also highlight transcription factors and signal transduction genes important in future research seeking to unravel the molecular mechanisms of T. virens activity in maize roots. Conclusions T. virens displays distinctly different transcriptional profiles between recognizing the presence of maize roots and active colonization of these roots. A though understanding of these processes will allow development of T. virens as a bio-control agent. Further, the publication of these datasets will target future research endeavors specifically to genes of interest when considering T. virens – maize symbiosis. Electronic supplementary material The online version of this article (10.1186/s12864-019-5651-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elizabeth A Malinich
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA
| | - Ken Wang
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA
| | - Prasun K Mukherjee
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA
| | - Michael Kolomiets
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA
| | - Charles M Kenerley
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA.
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22
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Rissel D, Peiter E. Poly(ADP-Ribose) Polymerases in Plants and Their Human Counterparts: Parallels and Peculiarities. Int J Mol Sci 2019; 20:E1638. [PMID: 30986964 PMCID: PMC6479469 DOI: 10.3390/ijms20071638] [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: 02/21/2019] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 12/25/2022] Open
Abstract
Poly(ADP-ribosyl)ation is a rapid and transient post-translational protein modification that was described first in mammalian cells. Activated by the sensing of DNA strand breaks, poly(ADP-ribose)polymerase1 (PARP1) transfers ADP-ribose units onto itself and other target proteins using NAD⁺ as a substrate. Subsequently, DNA damage responses and other cellular responses are initiated. In plants, poly(ADP-ribose) polymerases (PARPs) have also been implicated in responses to DNA damage. The Arabidopsis genome contains three canonical PARP genes, the nomenclature of which has been uncoordinated in the past. Albeit assumptions concerning the function and roles of PARP proteins in planta have often been inferred from homology and structural conservation between plant PARPs and their mammalian counterparts, plant-specific roles have become apparent. In particular, PARPs have been linked to stress responses of plants. A negative role under abiotic stress has been inferred from studies in which a genetic or, more commonly, pharmacological inhibition of PARP activity improved the performance of stressed plants; in response to pathogen-associated molecular patterns, a positive role has been suggested. However, reports have been inconsistent, and the effects of PARP inhibitors appear to be more robust than the genetic abolition of PARP gene expression, indicating the presence of alternative targets of those drugs. Collectively, recent evidence suggests a conditionality of stress-related phenotypes of parp mutants and calls for a reconsideration of PARP inhibitor studies on plants. This review critically summarizes our current understanding of poly(ADP-ribosylation) and PARP proteins in plants, highlighting similarities and differences to human PARPs, areas of controversy, and requirements for future studies.
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Affiliation(s)
- Dagmar Rissel
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, 06099 Halle (Saale), Germany.
- Agrochemisches Institut Piesteritz e.V. (AIP), Möllensdorfer Strasse 13, 06886 Lutherstadt Wittenberg, Germany.
- Institute for Plant Protection in Field Crops and Grassland, Julius Kühn-Institut (JKI), 38104 Braunschweig, Germany.
| | - Edgar Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, 06099 Halle (Saale), Germany.
- Agrochemisches Institut Piesteritz e.V. (AIP), Möllensdorfer Strasse 13, 06886 Lutherstadt Wittenberg, Germany.
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Liu J, Hu T, Feng P, Wang L, Yang S. Tomato yield and water use efficiency change with various soil moisture and potassium levels during different growth stages. PLoS One 2019; 14:e0213643. [PMID: 30917147 PMCID: PMC6436690 DOI: 10.1371/journal.pone.0213643] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 02/26/2019] [Indexed: 12/13/2022] Open
Abstract
Faced with the scarcity of water resource and irrational fertilizer use, it is highly important to supply plants with water and fertilizer at desiderated stages to improve yield with high water use efficiency (WUE). A pot experiment was conducted to investigate the effects of growth stage-specific water deficiency and potassium (K) fertilization on tomato yield and WUE. The entire growing season of tomato was divided into 5 stages: vegetative growth stage (VG), flowering and fruit setting stage (FS), early fruit growth stage (FG), fruit development stage (FD) and fruit maturity stage (FM). Three soil moisture (W) and three K fertilization levels were set up. W levels included W1, W2 and W3, indicating that soil water was maintained at 60-70% field capacity, 70-80% field capacity, and 80-90% field capacity, respectively. K levels included K1, K2 and K3, indicating that 0 g K2O per kg soil, 0.46 g K2O per kg soil and 0.92 g K2O per kg soil was applied. All combinations of the three W and three K levels were solely imposed at each of the five growth stages, for other four stages, plants were watered to 80-90% field capacity without K fertilizer (W3K1). The permanent W3K1 over the entire growth stage was taken as control (CK). The results showed that W deficiency imposed at all stages significantly affected tomato yield (P<0.01), except for VG stage in which W deficiency did not cause yield loss. K fertilization level during FS or FM stage had a significant effect on yield (P<0.01). A significant interaction effect of W and K on yield was only observed during FM stage. For WUE, significant effect of W deficiency at FS, FD and FM stages were observed, and a significant effect of K levels at FS, FD and FM stages was observed. Specifically, K fertilization was necessary during specific growth stage of tomato (i.e. FS and FM). During FS stage, even if a sufficient water supply seems necessary, a deficit irrigation with K fertilization could be applied as K fertilization could alleviate the negative effect of soil water deficit, however, excess of K fertilization during FM stage should be avoided to maintain tomato yield and WUE.
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Affiliation(s)
- Jie Liu
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
| | - Tiantian Hu
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
- * E-mail:
| | - Puyu Feng
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
| | - Li Wang
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
| | - Shuohuan Yang
- College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
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24
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Mohanta TK, Yadav D, Khan AL, Hashem A, Abd Allah EF, Al-Harrasi A. Molecular Players of EF-hand Containing Calcium Signaling Event in Plants. Int J Mol Sci 2019; 20:E1476. [PMID: 30909616 PMCID: PMC6471108 DOI: 10.3390/ijms20061476] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 02/21/2019] [Accepted: 02/27/2019] [Indexed: 11/28/2022] Open
Abstract
Ca2+ is a universal second messenger that plays a pivotal role in diverse signaling mechanisms in almost all life forms. Since the evolution of life from an aquatic to a terrestrial environment, Ca2+ signaling systems have expanded and diversified enormously. Although there are several Ca2+ sensing molecules found in a cell, EF-hand containing proteins play a principal role in calcium signaling event in plants. The major EF-hand containing proteins are calmodulins (CaMs), calmodulin like proteins (CMLs), calcineurin B-like (CBL) and calcium dependent protein kinases (CDPKs/CPKs). CaMs and CPKs contain calcium binding conserved D-x-D motifs in their EF-hands (one motif in each EF-hand) whereas CMLs contain a D-x₃-D motif in the first and second EF-hands that bind the calcium ion. Calcium signaling proteins form a complex interactome network with their target proteins. The CMLs are the most primitive calcium binding proteins. During the course of evolution, CMLs are evolved into CaMs and subsequently the CaMs appear to have merged with protein kinase molecules to give rise to calcium dependent protein kinases with distinct and multiple new functions. Ca2+ signaling molecules have evolved in a lineage specific manner with several of the calcium signaling genes being lost in the monocot lineage.
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Affiliation(s)
- Tapan Kumar Mohanta
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman.
| | - Dhananjay Yadav
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea.
| | - Abdul Latif Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman.
| | - Abeer Hashem
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
- Mycology and Plant Survey Department, Plant Pathology Research Institute, ARC, Giza 12511, Egypt.
| | - Elsayed Fathi Abd Allah
- Plant Production Department, College of Food and Agriculture Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman.
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25
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Oelmüller R. Sensing environmental and developmental signals via cellooligomers. JOURNAL OF PLANT PHYSIOLOGY 2018; 229:1-6. [PMID: 30005268 DOI: 10.1016/j.jplph.2018.06.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 06/08/2023]
Abstract
Roots respond to a cocktail of chemicals from microbes in the rhizosphere. Infochemicals in nmol concentrations activate receptor-mediated signal pathways, which reprogram the plant responses to environmental changes. The microbial signals have to pass the cell wall to activate pattern recognition receptors at the surface of the plant plasma membrane. The structure of the cell wall is not only a barrier for the signaling molecules, but also changes permanently during growth and development, as well as in response to microbial attacks or abiotic stress. Recently, cellooligomers (COMs) were identified as novel chemical mediators in Arabidopsis thaliana, which inform the cell about the alterations in and around the cell wall. They can be of microbial and plant origin and represent novel invasion patterns (Cook et al., 2015). COMs initiate Ca2+-dependent signaling events that reprogram the cell and adjust the expression and metabolite profiles as well as innate immunity in response to changes in their rhizosphere environment and the state of the cell wall. COMs operate synergistically with other signals or their recognition machineries and activates local and systemic responses in the entire plant. They also adjust the performance of the areal parts of the plant to signals perceived by the roots. Here, I summarize our current knowledge about COMs and propose strategies for future investigations.
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Affiliation(s)
- Ralf Oelmüller
- Matthias-Schleiden-Institute, Plant Physiology, Friedrich-Schiller-University Jena, Dornburgerstr. 159, D-07743, Jena, Germany.
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26
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Sujkowska-Rybkowska M, Znojek E. Localization of calreticulin and calcium ions in mycorrhizal roots of Medicago truncatula in response to aluminum stress. JOURNAL OF PLANT PHYSIOLOGY 2018; 229:22-31. [PMID: 30025219 DOI: 10.1016/j.jplph.2018.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 05/15/2018] [Indexed: 05/03/2023]
Abstract
Aluminum (Al) toxicity limits growth and symbiotic interactions of plants. Calcium plays essential roles in abiotic stresses and legume-Rhizobium symbiosis, but the sites and mechanism of Ca2+ mobilization during mycorrhizae have not been analyzed. In this study, the changes of cytoplasmic Ca2+ and calreticulin (CRT) in Medicago truncatula mycorrhizal (MR) and non-mycorrizal (NM) roots under short Al stress [50 μM AlCl3 pH 4.3 for 3 h] were analyzed. Free Ca2+ ions were detected cytochemically by their reaction with potassium pyroantimonate and anti-CRT antibody was used to locate this protein in Medicago roots by immunocytochemical methods. In MR and NM roots, Al induced accumulation of CRT and free Ca2+. Similar calcium and CRT distribution in the MR were found at the surface of fungal structures (arbuscules and intercellular hyphae), cell wall and in plasmodesmata, and in plant and fungal intracellular compartments. Additionally, degenerated arbuscules were associated with intense Ca2+ and CRT accumulation. In NM roots, Ca2+ and CRT epitopes were observed in the stele, near wall of cortex and endodermis. The present study provides new insight into Ca2+ storage and mobilization in mycorrhizae symbiosis. The colocalization of CRT and Ca2+ suggests that CRT is essential for calcium mobilization for normal mycorrhiza development and response to Al stress.
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Affiliation(s)
- Marzena Sujkowska-Rybkowska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland.
| | - Ewa Znojek
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
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27
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Moscatiello R, Sello S, Ruocco M, Barbulova A, Cortese E, Nigris S, Baldan B, Chiurazzi M, Mariani P, Lorito M, Navazio L. The Hydrophobin HYTLO1 Secreted by the Biocontrol Fungus Trichoderma longibrachiatum Triggers a NAADP-Mediated Calcium Signalling Pathway in Lotus japonicus. Int J Mol Sci 2018; 19:E2596. [PMID: 30200468 PMCID: PMC6164116 DOI: 10.3390/ijms19092596] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 08/29/2018] [Indexed: 12/14/2022] Open
Abstract
Trichoderma filamentous fungi are increasingly used as biocontrol agents and plant biostimulants. Growing evidence indicates that part of the beneficial effects is mediated by the activity of fungal metabolites on the plant host. We have investigated the mechanism of plant perception of HYTLO1, a hydrophobin abundantly secreted by Trichoderma longibrachiatum, which may play an important role in the early stages of the plant-fungus interaction. Aequorin-expressing Lotus japonicus suspension cell cultures responded to HYTLO1 with a rapid cytosolic Ca2+ increase that dissipated within 30 min, followed by the activation of the defence-related genes MPK3, WRK33, and CP450. The Ca2+-dependence of these gene expression was demonstrated by using the extracellular Ca2+ chelator EGTA and Ned-19, a potent inhibitor of the nicotinic acid adenine dinucleotide phosphate (NAADP) receptor in animal cells, which effectively blocked the HYTLO1-induced Ca2+ elevation. Immunocytochemical analyses showed the localization of the fungal hydrophobin at the plant cell surface, where it forms a protein film covering the plant cell wall. Our data demonstrate the Ca2+-mediated perception by plant cells of a key metabolite secreted by a biocontrol fungus, and provide the first evidence of the involvement of NAADP-gated Ca2+ release in a signalling pathway triggered by a biotic stimulus.
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Affiliation(s)
- Roberto Moscatiello
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
| | - Simone Sello
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
| | - Michelina Ruocco
- Institute for Sustainable Plant Protection, CNR, Via Università 133, 80055 Portici (NA), Italy.
| | - Ani Barbulova
- Institute of BioSciences and BioResourses, CNR, Via P. Castellino 111, 80131 Napoli, Italy.
| | - Enrico Cortese
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
| | - Sebastiano Nigris
- Botanical Garden, University of Padova, Via Orto Botanico 15, 35123 Padova, Italy.
| | - Barbara Baldan
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
- Botanical Garden, University of Padova, Via Orto Botanico 15, 35123 Padova, Italy.
| | - Maurizio Chiurazzi
- Institute of BioSciences and BioResourses, CNR, Via P. Castellino 111, 80131 Napoli, Italy.
| | - Paola Mariani
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
| | - Matteo Lorito
- Department of Agricultural Sciences, University of Napoli "Federico II", Via Università 100, 80055 Portici (NA), Italy.
| | - Lorella Navazio
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy.
- Botanical Garden, University of Padova, Via Orto Botanico 15, 35123 Padova, Italy.
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28
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Edel KH, Marchadier E, Brownlee C, Kudla J, Hetherington AM. The Evolution of Calcium-Based Signalling in Plants. Curr Biol 2018; 27:R667-R679. [PMID: 28697370 DOI: 10.1016/j.cub.2017.05.020] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The calcium-based intracellular signalling system is used ubiquitously to couple extracellular stimuli to their characteristic intracellular responses. It is becoming clear from genomic and physiological investigations that while the basic elements in the toolkit are common between plants and animals, evolution has acted in such a way that, in plants, some components have diversified with respect to their animal counterparts, while others have either been lost or have never evolved in the plant lineages. In comparison with animals, in plants there appears to have been a loss of diversity in calcium-influx mechanisms at the plasma membrane. However, the evolution of the calcium-storing vacuole may provide plants with additional possibilities for regulating calcium influx into the cytosol. Among the proteins that are involved in sensing and responding to increases in calcium, plants possess specific decoder proteins that are absent from the animal lineage. In seeking to understand the selection pressures that shaped the plant calcium-signalling toolkit, we consider the evolution of fast electrical signalling. We also note that, in contrast to animals, plants apparently do not make extensive use of cyclic-nucleotide-based signalling. It is possible that reliance on a single intracellular second-messenger-based system, coupled with the requirement to adapt to changing environmental conditions, has helped to define the diversity of components found in the extant plant calcium-signalling toolkit.
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Affiliation(s)
- Kai H Edel
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149 Münster, Germany
| | - Elodie Marchadier
- School of Biological Sciences, Life Sciences Building, University of Bristol, Tyndall Avenue, Bristol BS8 1TQ, UK; Génétique Quantitative et Evolution - Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Colin Brownlee
- Marine Biological Association of the UK, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK; School of Ocean and Earth Sciences, University of Southampton, Southampton, SO14 3ZH, UK
| | - Jörg Kudla
- Institut für Biologie und Biotechnologie der Pflanzen, Universität Münster, Schlossplatz 7, 48149 Münster, Germany
| | - Alistair M Hetherington
- School of Biological Sciences, Life Sciences Building, University of Bristol, Tyndall Avenue, Bristol BS8 1TQ, UK.
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29
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Mangano S, Martínez Pacheco J, Marino-Buslje C, Estevez JM. How Does pH Fit in with Oscillating Polar Growth? TRENDS IN PLANT SCIENCE 2018; 23:479-489. [PMID: 29605100 DOI: 10.1016/j.tplants.2018.02.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/08/2018] [Accepted: 02/23/2018] [Indexed: 05/22/2023]
Abstract
Polar growth in root hairs and pollen tubes is an excellent model for investigating plant cell size regulation. While linear plant growth is historically explained by the acid growth theory, which considers that auxin triggers apoplastic acidification by activating plasma membrane P-type H+-ATPases (AHAs) along with cell wall relaxation over long periods, the apoplastic pH (apopH) regulatory mechanisms are unknown for polar growth. Polar growth is a fast process mediated by rapid oscillations that repeat every ∼20-40s. In this review, we explore a reactive oxygen species (ROS)-dependent mechanism that could generate oscillating apopH gradients in a coordinated manner with growth and Ca2+ oscillations. We propose possible mechanisms by which apopH oscillations are coordinated with polar growth together with ROS and Ca2+ waves.
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Affiliation(s)
- Silvina Mangano
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET), Av. Patricias Argentinas 435, Buenos Aires CP C1405BWE, Argentina; These authors contributed equally to this work
| | - Javier Martínez Pacheco
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET), Av. Patricias Argentinas 435, Buenos Aires CP C1405BWE, Argentina; Department of Genetics and Phytopathology, Biological Research Division, Tobacco Research Institute, Carretera Tumbadero, 8 1/2 km, San Antonio de los Baños, Artemisa, Cuba; These authors contributed equally to this work
| | - Cristina Marino-Buslje
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET), Av. Patricias Argentinas 435, Buenos Aires CP C1405BWE, Argentina
| | - José M Estevez
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET), Av. Patricias Argentinas 435, Buenos Aires CP C1405BWE, Argentina.
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30
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Costa A, Navazio L, Szabo I. The contribution of organelles to plant intracellular Calcium signalling. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4996169. [PMID: 29767757 DOI: 10.1093/jxb/ery185] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Indexed: 05/18/2023]
Abstract
Calcium (Ca2+) is among the most important intracellular messengers in living organisms. Understanding of the players and dynamics of Ca2+ signalling pathways in plants may help to unravel the molecular basis of their exceptional flexibility to respond and to adapt to different stimuli. In the present review we focus on new tools that have recently revolutionized our view of organellar Ca2+ signalling as well as on the current knowledge regarding the pathways mediating Ca2+ fluxes across intracellular membranes. The contribution of organelles and cellular subcompartments to the orchestrated response via Ca2+ signalling within a cell is also discussed, underlining the fact that one of the greatest challenges in the field is the elucidation of how influx and efflux Ca2+ transporters/channels are regulated in a concerted manner to translate specific information into a Ca2+ signature.
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Affiliation(s)
- Alex Costa
- Department of Biosciences, University of Milan, Via G. Celoria, Milan, Italy
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, Via G. Celoria, Milan, Italy
| | - Lorella Navazio
- Department of Biology, University of Padova, Via U. Bassi, Padova, Italy
- Botanical Garden, University of Padova, Via Orto Botanico, Padova, Italy
| | - Ildiko Szabo
- Department of Biology, University of Padova, Via U. Bassi, Padova, Italy
- Botanical Garden, University of Padova, Via Orto Botanico, Padova, Italy
- Institute of Neurosciences, Consiglio Nazionale delle Ricerche, Via U. Bassi, Padova, Italy
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31
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Andresen E, Peiter E, Küpper H. Trace metal metabolism in plants. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:909-954. [PMID: 29447378 DOI: 10.1093/jxb/erx465] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 12/04/2017] [Indexed: 05/18/2023]
Abstract
Many trace metals are essential micronutrients, but also potent toxins. Due to natural and anthropogenic causes, vastly different trace metal concentrations occur in various habitats, ranging from deficient to toxic levels. Therefore, one focus of plant research is on the response to trace metals in terms of uptake, transport, sequestration, speciation, physiological use, deficiency, toxicity, and detoxification. In this review, we cover most of these aspects for the essential micronutrients copper, iron, manganese, molybdenum, nickel, and zinc to provide a broader overview than found in other recent reviews, to cross-link aspects of knowledge in this very active research field that are often seen in a separated way. For example, individual processes of metal usage, deficiency, or toxicity often were not mechanistically interconnected. Therefore, this review also aims to stimulate the communication of researchers following different approaches, such as gene expression analysis, biochemistry, or biophysics of metalloproteins. Furthermore, we highlight recent insights, emphasizing data obtained under physiologically and environmentally relevant conditions.
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Affiliation(s)
- Elisa Andresen
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská, Ceské Budejovice, Czech Republic
| | - Edgar Peiter
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Plant Nutrition Laboratory, Betty-Heimann-Strasse, Halle (Saale), Germany
| | - Hendrik Küpper
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská, České Budějovice, Czech Republic
- University of South Bohemia, Faculty of Science, Department of Experimental Plant Biology, Branišovská, České Budějovice, Czech Republic
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32
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Chávez JC, De la Vega-Beltrán JL, José O, Torres P, Nishigaki T, Treviño CL, Darszon A. Acrosomal alkalization triggers Ca 2+ release and acrosome reaction in mammalian spermatozoa. J Cell Physiol 2018; 233:4735-4747. [PMID: 29135027 DOI: 10.1002/jcp.26262] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 10/12/2017] [Indexed: 01/01/2023]
Abstract
The sperm acrosome reaction (AR), an essential event for mammalian fertilization, involves Ca2+ permeability changes leading to exocytosis of the acrosomal vesicle. The acrosome, an intracellular Ca2+ store whose luminal pH is acidic, contains hydrolytic enzymes. It is known that acrosomal pH (pHacr ) increases during capacitation and this correlates with spontaneous AR. Some AR inducers increase intracellular Ca2+ concentration ([Ca2+ ]i ) through Ca2+ release from internal stores, mainly the acrosome. Catsper, a sperm specific Ca2+ channel, has been suggested to participate in the AR. Curiously, Mibefradil and NNC55-0396, two CatSper blockers, themselves elevate [Ca2+ ]i by unknown mechanisms. Here we show that these compounds, as other weak bases, can elevate pHacr , trigger Ca2+ release from the acrosome, and induce the AR in both mouse and human sperm. To our surprise, μM concentrations of NNC55-0396 induced AR even in nominally Ca2+ free media. Our findings suggest that alkalization of the acrosome is critical step for Ca2+ release from the acrosome that leads to the acrosome reaction.
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Affiliation(s)
- Julio C Chávez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - José L De la Vega-Beltrán
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - Omar José
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - Paulina Torres
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - Takuya Nishigaki
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - Claudia L Treviño
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
| | - Alberto Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, CP, México
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Luo S, Zhang X, Wang J, Jiao C, Chen Y, Shen Y. Plant ion channels and transporters in herbivory-induced signalling. FUNCTIONAL PLANT BIOLOGY : FPB 2018; 45:111-131. [PMID: 32291026 DOI: 10.1071/fp16318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 12/06/2016] [Indexed: 06/11/2023]
Abstract
In contrast to many biotic stresses that plants face, feeding by herbivores produces unique mechanical and chemical signatures. Plants have evolved effective systems to recognise these mechanical stimuli and chemical elicitors at the plasma membrane (PM), where this recognition generates ion fluxes, including an influx of Ca2+ that elicits cellular Ca2+ signalling, production of reactive oxygen species (ROS), and variation in transmembrane potential. These signalling events also function in propagation of long-distance signals (Ca2+ waves, ROS waves, and electrical signals), which contribute to rapid, systemic induction of defence responses. Recent studies have identified several candidate channels or transporters that likely produce these ion fluxes at the PM. Here, we describe the important roles of these channels/transporters in transduction or transmission of herbivory-induced early signalling events, long-distance signals, and jasmonic acid and green leaf volatile signalling in plants.
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Affiliation(s)
- Shuitian Luo
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Xiao Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Jinfei Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Chunyang Jiao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yingying Chen
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yingbai Shen
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
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Fang H, Liu Z, Long Y, Liang Y, Jin Z, Zhang L, Liu D, Li H, Zhai J, Pei Y. The Ca 2+ /calmodulin2-binding transcription factor TGA3 elevates LCD expression and H 2 S production to bolster Cr 6+ tolerance in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 91:1038-1050. [PMID: 28670772 DOI: 10.1111/tpj.13627] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 06/22/2017] [Indexed: 05/04/2023]
Abstract
Heavy metal (HM) contamination on agricultural land not only reduces crop yield but also causes human health concerns. As a plant gasotransmitter, hydrogen sulfide (H2 S) can trigger various defense responses and help reduce accumulation of HMs in plants; however, little is known about the regulatory mechanisms of H2 S signaling. Here, we provide evidence to answer the long-standing question about how H2 S production is elevated in the defense of plants against HM stress. During the response of Arabidopsis to chromium (Cr6+ ) stress, the transcription of L-cysteine desulfhydrase (LCD), the key enzyme for H2 S production, was enhanced through a calcium (Ca2+ )/calmodulin2 (CaM2)-mediated pathway. Biochemistry and molecular biology studies demonstrated that Ca2+ /CaM2 physically interacts with the bZIP transcription factor TGA3, a member of the 'TGACG'-binding factor family, to enhance binding of TGA3 to the LCD promoter and increase LCD transcription, which then promotes the generation of H2 S. Consistent with the roles of TGA3 and CaM2 in activating LCD expression, both cam2 and tga3 loss-of-function mutants have reduced LCD abundance and exhibit increased sensitivity to Cr6+ stress. Accordingly, this study proposes a regulatory pathway for endogenous H2 S generation, indicating that plants respond to Cr6+ stress by adjusting the binding affinity of TGA3 to the LCD promoter, which increases LCD expression and promotes H2 S production. This suggests that manipulation of the endogenous H2 S level through genetic engineering could improve the tolerance of grains to HM stress and increase agricultural production on soil contaminated with HMs.
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Affiliation(s)
- Huihui Fang
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Zhiqiang Liu
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Yanping Long
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yali Liang
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Zhuping Jin
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Liping Zhang
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Danmei Liu
- College of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Hua Li
- College of Environmental and Resource Science, Shanxi University, Taiyuan, 030006, China
| | - Jixian Zhai
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yanxi Pei
- College of Life Science, Shanxi University, Taiyuan, 030006, China
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DeFalco TA, Toyota M, Phan V, Karia P, Moeder W, Gilroy S, Yoshioka K. Using GCaMP3 to Study Ca2+ Signaling in Nicotiana Species. PLANT & CELL PHYSIOLOGY 2017; 58:1173-1184. [PMID: 28482045 DOI: 10.1093/pcp/pcx053] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 04/06/2017] [Indexed: 05/24/2023]
Abstract
Ca2+ signaling is a central component of plant biology; however, direct analysis of in vivo Ca2+ levels is experimentally challenging. In recent years, the use of genetically encoded Ca2+ indicators has revolutionized the study of plant Ca2+ signaling, although such studies have been largely restricted to the model plant Arabidopsis. We have developed stable transgenic Nicotiana benthamiana and Nicotiana tabacum lines expressing the single-wavelength fluorescent Ca2+ indicator, GCaMP3. Ca2+ levels in these plants can be imaged in situ using fluorescence microscopy, and these plants can be used qualitatively and semi-quantitatively to evaluate Ca2+ signals in response to a broad array of abiotic or biotic stimuli, such as cold shock or pathogen-associated molecular patterns (PAMPs). Furthermore, these tools can be used in conjunction with well-established N. benthamiana techniques such as virus-induced gene silencing (VIGS) or transient heterologous expression to assay the effects of loss or gain of function on Ca2+ signaling, an approach which we validated via silencing or transient expression of the PAMP receptors FLS2 (Flagellin Sensing 2) or EFR (EF-Tu receptor), respectively. Using these techniques, along with chemical inhibitor treatments, we demonstrate how these plants can be used to elucidate the molecular components governing Ca2+ signaling in response to specific stimuli.
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Affiliation(s)
- Thomas A DeFalco
- Department of Cell & Systems Biology, University of Toronto, Toronto, M5S 3B2, Canada
- The Sainsbury Laboratory, Norwich NR4 7UH, UK
| | - Masatsugu Toyota
- Department of Botany, University of Wisconsin, Madison, WI 53706, USA
- Department of Biochemistry and Molecular Biology, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama, 338-8570, Japan
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012 Japan
| | - Van Phan
- Department of Cell & Systems Biology, University of Toronto, Toronto, M5S 3B2, Canada
| | - Purva Karia
- Department of Cell & Systems Biology, University of Toronto, Toronto, M5S 3B2, Canada
| | - Wolfgang Moeder
- Department of Cell & Systems Biology, University of Toronto, Toronto, M5S 3B2, Canada
| | - Simon Gilroy
- Department of Botany, University of Wisconsin, Madison, WI 53706, USA
| | - Keiko Yoshioka
- Department of Cell & Systems Biology, University of Toronto, Toronto, M5S 3B2, Canada
- Center for the Analysis of Genome Evolution and Function (CAGEF), University of Toronto, Toronto, M5S 3B2, Canada
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Tao J, Feng C, Ai B, Kang M. Adaptive molecular evolution of the two-pore channel 1 gene TPC1 in the karst-adapted genus Primulina (Gesneriaceae). ANNALS OF BOTANY 2016; 118:1257-1268. [PMID: 27582362 PMCID: PMC5155596 DOI: 10.1093/aob/mcw168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/26/2016] [Accepted: 06/30/2016] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND AIMS Limestone karst areas possess high floral diversity and endemism. The genus Primulina, which contributes to the unique calcicole flora, has high species richness and exhibit specific soil-based habitat associations that are mainly distributed on calcareous karst soils. The adaptive molecular evolutionary mechanism of the genus to karst calcium-rich environments is still not well understood. The Ca2+-permeable channel TPC1 was used in this study to test whether its gene is involved in the local adaptation of Primulina to karst high-calcium soil environments. METHODS Specific amplification and sequencing primers were designed and used to amplify the full-length coding sequences of TPC1 from cDNA of 76 Primulina species. The sequence alignment without recombination and the corresponding reconstructed phylogeny tree were used in molecular evolutionary analyses at the nucleic acid level and amino acid level, respectively. Finally, the identified sites under positive selection were labelled on the predicted secondary structure of TPC1. KEY RESULTS Seventy-six full-length coding sequences of Primulina TPC1 were obtained. The length of the sequences varied between 2220 and 2286 bp and the insertion/deletion was located at the 5' end of the sequences. No signal of substitution saturation was detected in the sequences, while significant recombination breakpoints were detected. The molecular evolutionary analyses showed that TPC1 was dominated by purifying selection and the selective pressures were not significantly different among species lineages. However, significant signals of positive selection were detected at both TPC1 codon level and amino acid level, and five sites under positive selective pressure were identified by at least three different methods. CONCLUSIONS The Ca2+-permeable channel TPC1 may be involved in the local adaptation of Primulina to karst Ca2+-rich environments. Different species lineages suffered similar selective pressure associated with calcium in karst environments, and episodic diversifying selection at a few sites may play a major role in the molecular evolution of Primulina TPC1.
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Affiliation(s)
- Junjie Tao
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China and
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China and
| | - Chao Feng
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China and
| | - Bin Ai
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China and
| | - Ming Kang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China and
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Sanyal SK, Rao S, Mishra LK, Sharma M, Pandey GK. Plant Stress Responses Mediated by CBL-CIPK Phosphorylation Network. Enzymes 2016; 40:31-64. [PMID: 27776782 DOI: 10.1016/bs.enz.2016.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
At any given time and location, plants encounter a flood of environmental stimuli. Diverse signal transduction pathways sense these stimuli and generate a diverse array of responses. Calcium (Ca2+) is generated as a second messenger due to these stimuli and is responsible for transducing the signals downstream in the pathway. A large number of Ca2+ sensor-responder components are responsible for Ca2+ signaling in plants. The sensor-responder complexes calcineurin B-like protein (CBL) and CBL-interacting protein kinases (CIPKs) are pivotal players in Ca2+-mediated signaling. The CIPKs are the protein kinases and hence mediate signal transduction mainly by the process of protein phosphorylation. Elaborate studies conducted in Arabidopsis have shown the involvement of CBL-CIPK complexes in abiotic and biotic stresses, and nutrient deficiency. Additionally, studies in crop plants have also indicated their role in the similar responses. In this chapter, we review the current literature on the CBL and CIPK network, shedding light into the enzymatic property and mechanism of action of CBL-CIPK complexes. We also summarize various reports on the functional modulation of the downstream targets by the CBL-CIPK modules across all plant species.
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Affiliation(s)
- S K Sanyal
- University of Delhi South Campus, New Delhi, India
| | - S Rao
- University of Delhi South Campus, New Delhi, India
| | - L K Mishra
- University of Delhi South Campus, New Delhi, India
| | - M Sharma
- University of Delhi South Campus, New Delhi, India
| | - G K Pandey
- University of Delhi South Campus, New Delhi, India.
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Lange M, Weihmann F, Schliebner I, Horbach R, Deising HB, Wirsel SGR, Peiter E. The Transient Receptor Potential (TRP) Channel Family in Colletotrichum graminicola: A Molecular and Physiological Analysis. PLoS One 2016; 11:e0158561. [PMID: 27359114 PMCID: PMC4928787 DOI: 10.1371/journal.pone.0158561] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/19/2016] [Indexed: 12/02/2022] Open
Abstract
Calcium (Ca2+) is a universal second messenger in all higher organisms and centrally involved in the launch of responses to environmental stimuli. Ca2+ signals in the cytosol are initiated by the activation of Ca2+ channels in the plasma membrane and/or in endomembranes. Yeast (Saccharomyces cerevisiae) contains a Ca2+-permeable channel of the TRP family, TRPY1, which is localized in the vacuolar membrane and contributes to cytosolic free Ca2+ ([Ca2+]cyt) elevations, for example in response to osmotic upshock. A TRPY1 homologue in the rice blast fungus is known to be important for growth and pathogenicity. To determine the role of the TRP channel family in the maize pathogen Colletotrichum graminicola, proteins homologous to TRPY1 were searched. This identified not one, but four genes in the C. graminicola genome, which had putative orthologs in other fungi, and which we named CgTRPF1 through 4. The topology of the CgTRPF proteins resembled that of TRPY1, albeit with a variable number of transmembrane (TM) domains additional to the six-TM-domain core and a diverse arrangement of putatively Ca2+-binding acidic motifs. All CgTRPF genes were expressed in axenic culture and throughout the infection of maize. Like TRPY1, all TRPF proteins of C. graminicola were localized intracellularly, albeit three of them were found not in large vacuoles, but co-localized in vesicular structures. Deletion strains for the CgTRPF genes were not altered in processes thought to involve Ca2+ release from internal stores, i.e. spore germination, the utilization of complex carbon sources, and the generation of tip-focussed [Ca2+]cyt spikes. Heterologous expression of CgTRPF1 through 4 in a tryp1Δ yeast mutant revealed that none of the channels mediated the release of Ca2+ in response to osmotic upshock. Accordingly, aequorin-based [Ca2+]cyt measurements of C. graminicola showed that in this fungus, osmotic upshock-triggered [Ca2+]cyt elevations were generated entirely by influx of Ca2+ from the extracellular space. Cgtrpf mutants did not show pathogenicity defects in leaf infection assays. In summary, our study reveals major differences between different fungi in the contribution of TRP channels to Ca2+-mediated signal transduction.
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Affiliation(s)
- Mario Lange
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Fabian Weihmann
- Phytopathology and Plant Protection, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Ivo Schliebner
- Phytopathology and Plant Protection, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Ralf Horbach
- Phytopathology and Plant Protection, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Holger B. Deising
- Phytopathology and Plant Protection, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Stefan G. R. Wirsel
- Phytopathology and Plant Protection, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Edgar Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Interdisciplinary Centre for Crop Plant Research (IZN), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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Sello S, Perotto J, Carraretto L, Szabò I, Vothknecht UC, Navazio L. Dissecting stimulus-specific Ca2+ signals in amyloplasts and chloroplasts of Arabidopsis thaliana cell suspension cultures. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:3965-74. [PMID: 26893493 PMCID: PMC4915524 DOI: 10.1093/jxb/erw038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Calcium is used by plants as an intracellular messenger in the detection of and response to a plethora of environmental stimuli and contributes to a fine-tuned internal regulation. Interest in the role of different subcellular compartments in Ca(2+) homeostasis and signalling has been growing in recent years. This work has evaluated the potential participation of non-green plastids and chloroplasts in the plant Ca(2+) signalling network using heterotrophic and autotrophic cell suspension cultures from Arabidopsis thaliana plant lines stably expressing the bioluminescent Ca(2+) reporter aequorin targeted to the plastid stroma. Our results indicate that both amyloplasts and chloroplasts are involved in transient Ca(2+) increases in the plastid stroma induced by several environmental stimuli, suggesting that these two functional types of plastids are endowed with similar mechanisms for handling Ca(2+) A comparison of the Ca(2+) trace kinetics recorded in parallel in the plastid stroma, the surface of the outer membrane of the plastid envelope, and the cytosol indicated that plastids play an essential role in switching off different cytosolic Ca(2+) signals. Interestingly, a transient stromal Ca(2+) signal in response to the light-to-dark transition was observed in chloroplasts, but not amyloplasts. Moreover, significant differences in the amplitude of specific plastidial Ca(2+) changes emerged when the photosynthetic metabolism of chloroplasts was reactivated by light. In summary, our work highlights differences between non-green plastids and chloroplasts in terms of Ca(2+) dynamics in response to environmental stimuli.
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Affiliation(s)
- Simone Sello
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
| | - Jennifer Perotto
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
| | - Luca Carraretto
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
| | - Ildikò Szabò
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
| | - Ute C Vothknecht
- Department of Biology I, Faculty of Biology, LMU Munich, Großhaderner Str. 2-4, D-82152 Munich, Germany
| | - Lorella Navazio
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
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Choi WG, Hilleary R, Swanson SJ, Kim SH, Gilroy S. Rapid, Long-Distance Electrical and Calcium Signaling in Plants. ANNUAL REVIEW OF PLANT BIOLOGY 2016; 67:287-307. [PMID: 27023742 DOI: 10.1146/annurev-arplant-043015-112130] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Plants integrate activities throughout their bodies using long-range signaling systems in which stimuli sensed by just a few cells are translated into mobile signals that can influence the activities in distant tissues. Such signaling can travel at speeds well in excess of millimeters per second and can trigger responses as diverse as changes in transcription and translation levels, posttranslational regulation, alterations in metabolite levels, and even wholesale reprogramming of development. In addition to the use of mobile small molecules and hormones, electrical signals have long been known to propagate throughout the plant. This electrical signaling network has now been linked to waves of Ca(2+) and reactive oxygen species that traverse the plant and trigger systemic responses. Analysis of cell type specificity in signal propagation has revealed the movement of systemic signals through specific cell types, suggesting that a rapid signaling network may be hardwired into the architecture of the plant.
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Affiliation(s)
- Won-Gyu Choi
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin 53706; , , , ,
| | - Richard Hilleary
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin 53706; , , , ,
| | - Sarah J Swanson
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin 53706; , , , ,
| | - Su-Hwa Kim
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin 53706; , , , ,
| | - Simon Gilroy
- Department of Botany, University of Wisconsin-Madison, Madison, Wisconsin 53706; , , , ,
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Bioinspired design of a polymer gel sensor for the realization of extracellular Ca(2+) imaging. Sci Rep 2016; 6:24275. [PMID: 27067646 PMCID: PMC4828671 DOI: 10.1038/srep24275] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/21/2016] [Indexed: 12/20/2022] Open
Abstract
Although the role of extracellular Ca2+ draws increasing attention as a messenger in intercellular communications, there is currently no tool available for imaging Ca2+ dynamics in extracellular regions. Here we report the first solid-state fluorescent Ca2+ sensor that fulfills the essential requirements for realizing extracellular Ca2+ imaging. Inspired by natural extracellular Ca2+-sensing receptors, we designed a particular type of chemically-crosslinked polyacrylic acid gel, which can undergo single-chain aggregation in the presence of Ca2+. By attaching aggregation-induced emission luminogen to the polyacrylic acid as a pendant, the conformational state of the main chain at a given Ca2+ concentration is successfully translated into fluorescence property. The Ca2+ sensor has a millimolar-order apparent dissociation constant compatible with extracellular Ca2+ concentrations, and exhibits sufficient dynamic range and excellent selectivity in the presence of physiological concentrations of biologically relevant ions, thus enabling monitoring of submillimolar fluctuations of Ca2+ in flowing analytes containing millimolar Ca2+ concentrations.
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42
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Lu Z, Ren T, Pan Y, Li X, Cong R, Lu J. Differences on photosynthetic limitations between leaf margins and leaf centers under potassium deficiency for Brassica napus L. Sci Rep 2016; 6:21725. [PMID: 26902263 PMCID: PMC4763197 DOI: 10.1038/srep21725] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/29/2016] [Indexed: 01/16/2023] Open
Abstract
Analyzing the proportions of stomatal (SL), mesophyll conductance (MCL) and biochemical limitations (BL) imposed by potassium (K) deficit, and evaluating their relationships to leaf K status will be helpful to understand the mechanism underlying the inhibition of K deficiency on photosynthesis (A). A quantitative limitation analysis of K deficiency on photosynthesis was performed on leaf margins and centers under K deficiency and sufficient K supply treatments of Brassica napus L. Potassium deficiency decreased A, stomatal (gs) and mesophyll conductance (gm) of margins, SL, MCL and BL accounted for 23.9%, 33.0% and 43.1% of the total limitations. While for leaf centers, relatively low limitations occurred. Nonlinear curve fitting analysis indicated that each limiting factor generated at same leaf K status (1.07%). Although MCL was the main component of limitations when A began to fall, BL replaced it at a leaf K concentration below 0.78%. Up-regulated MCL was related to lower surface area of chloroplasts exposed to intercellular airspaces (Sc/S) and larger cytosol diffusion resistance but not the cell wall thickness. Our results highlighted that photosynthetic limitations appear simultaneously under K deficiency and vary with increasing K deficiency intensity.
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Affiliation(s)
- Zhifeng Lu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
| | - Tao Ren
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
| | - Yonghui Pan
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
| | - Xiaokun Li
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
| | - Rihuan Cong
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
| | - Jianwei Lu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture, Wuhan 430070, China
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43
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Two-pore channels at the intersection of endolysosomal membrane traffic. Biochem Soc Trans 2016; 43:434-41. [PMID: 26009187 DOI: 10.1042/bst20140303] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Two-pore channels (TPCs) are ancient members of the voltage-gated ion channel superfamily that localize to acidic organelles such as lysosomes. The TPC complex is the proposed target of the Ca2+-mobilizing messenger NAADP, which releases Ca2+ from these acidic Ca2+ stores. Whereas details of TPC activation and native ion permeation remain unclear, a consensus has emerged around their function in regulating endolysosomal trafficking. This role is supported by recent proteomic data showing that TPCs interact with proteins controlling membrane organization and dynamics, including Rab GTPases and components of the fusion apparatus. Regulation of TPCs by PtdIns(3,5)P2 and/or NAADP (nicotinic acid adenine dinucleotide phosphate) together with their functional and physical association with Rab proteins provides a mechanism for coupling phosphoinositide and trafficking protein cues to local ion fluxes. Therefore, TPCs work at the regulatory cross-roads of (patho)physiological cues to co-ordinate and potentially deregulate traffic flow through the endolysosomal network. This review focuses on the native role of TPCs in trafficking and their emerging contributions to endolysosomal trafficking dysfunction.
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Li P, Zhang G, Gonzales N, Guo Y, Hu H, Park S, Zhao J. Ca(2+) -regulated and diurnal rhythm-regulated Na(+) /Ca(2+) exchanger AtNCL affects flowering time and auxin signalling in Arabidopsis. PLANT, CELL & ENVIRONMENT 2016; 39:377-92. [PMID: 26296956 DOI: 10.1111/pce.12620] [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: 04/04/2015] [Revised: 07/09/2015] [Accepted: 07/30/2015] [Indexed: 05/21/2023]
Abstract
Calcium (Ca(2+) ) is vital for plant growth, development, hormone response and adaptation to environmental stresses, yet the mechanisms regulating plant cytosolic Ca(2+) homeostasis are not fully understood. Here, we characterize an Arabidopsis Ca(2+) -regulated Na(+) /Ca(2+) exchanger AtNCL that regulates Ca(2+) and multiple physiological processes. AtNCL was localized to the tonoplast in yeast and plant cells. AtNCL appeared to mediate sodium (Na(+) ) vacuolar sequestration and meanwhile Ca(2+) release. The EF-hand domains within AtNCL regulated Ca(2+) binding and transport of Ca(2+) and Na(+) . Plants with diminished AtNCL expression were more tolerant to high CaCl2 but more sensitive to both NaCl and auxin; heightened expression of AtNCL rendered plants more sensitive to CaCl2 but tolerant to NaCl. AtNCL expression appeared to be regulated by the diurnal rhythm and suppressed by auxin. DR5::GUS expression and root responses to auxin were altered in AtNCL mutants. The auxin-induced suppression of AtNCL was attenuated in SLR/IAA14 and ARF6/8 mutants. The mutants with altered AtNCL expression also altered flowering time and FT and CO expression; FT may mediate AtNCL-regulated flowering time change. Therefore, AtNCL is a vacuolar Ca(2+) -regulated Na(+) /Ca(2+) exchanger that regulates auxin responses and flowering time.
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Affiliation(s)
- Penghui Li
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430075, China
| | - Gaoyang Zhang
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430075, China
| | - Naomi Gonzales
- Children's Nutrition Research Center, USDA/ARS, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yingqing Guo
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430075, China
- Children's Nutrition Research Center, USDA/ARS, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Honghong Hu
- College of Life Science and technology, Huazhong Agricultural University, Wuhan, 430075, China
| | - Sunghun Park
- Department of Horticulture, Forestry and Recreation Resources, Kansas State University, Manhattan, KS, 66506, USA
| | - Jian Zhao
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430075, China
- Children's Nutrition Research Center, USDA/ARS, Baylor College of Medicine, Houston, TX, 77030, USA
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45
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Sun CH, Zhang QY, Sun MH, Hu DG. MdSOS2L1 forms a complex with MdMYB1 to control vacuolar pH by transcriptionally regulating MdVHA-B1 in apples. PLANT SIGNALING & BEHAVIOR 2016; 11:e1146846. [PMID: 26910596 PMCID: PMC4883882 DOI: 10.1080/15592324.2016.1146846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/19/2016] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
Vacuolar pH is important and involves in many different physiological processes in plants. A recent paper published in Plant Physiology reveals that MdMYB1 regulates vacuolar pH by directly transcriptionally regulating proton pump genes and malate transporters genes, such as V-ATPase subunit gene MdVHA-B1. Here, we found that MdSOS2L1 in vitro did not directly interact with MdMYB1, however, in vivo formed a complex with MdMYB1 in the nucleus to regulate MdVHA-B1-mediated vacuolar acidification. This finding shed light on the role of MdSOS2L1 in transcriptionally regulating MdVHA-B1 in addition to its post-modified function in apples.
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Affiliation(s)
- Cui-Hui Sun
- State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong China
| | - Quan-Yan Zhang
- State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong China
| | - Mei-Hong Sun
- State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong China
| | - Da-Gang Hu
- State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong China
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46
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Takaoka Y, Shigenaga M, Imai M, Nukadzuka Y, Ishimaru Y, Saito K, Yokoyama R, Nishitani K, Ueda M. Protein ligand-tethered synthetic calcium indicator for localization control and spatiotemporal calcium imaging in plant cells. Bioorg Med Chem Lett 2016; 26:9-14. [PMID: 26602280 DOI: 10.1016/j.bmcl.2015.11.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 11/10/2015] [Accepted: 11/17/2015] [Indexed: 10/22/2022]
Abstract
In plant biology, calcium ions are involved in a variety of intriguing biological phenomena as a secondary messenger. However, most conventional calcium indicators are not applicable for plant cells because of the difficulty with their localization control in plant cells. We here introduce a method to monitor spatiotemporal Ca(2+) dynamics in living plant cells based on linking the synthetic calcium indicator Calcium Green-1 to a natural product-based protein ligand. In a proof-of-concept study using cultured BY-2 cells overexpressing the target protein for the ligand, the ligand-tethered probe accumulated in the cytosol and nucleus, and enabled real-time monitoring of the cytosolic and nucleus Ca(2+) dynamics under the physiological condition. The present strategy using ligand-tethered fluorescent sensors may be successfully applied to reveal the spatiotemporal dynamics of calcium ions in living plant cells.
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Affiliation(s)
- Yousuke Takaoka
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Miyuki Shigenaga
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Masaki Imai
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Yuuki Nukadzuka
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Yasuhiro Ishimaru
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Kei Saito
- Laboratory of Plant Cell Wall Biology, Graduate School of Life Sciences, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Ryusuke Yokoyama
- Laboratory of Plant Cell Wall Biology, Graduate School of Life Sciences, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Kazuhiko Nishitani
- Laboratory of Plant Cell Wall Biology, Graduate School of Life Sciences, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Minoru Ueda
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan.
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Kiep V, Vadassery J, Lattke J, Maaß JP, Boland W, Peiter E, Mithöfer A. Systemic cytosolic Ca(2+) elevation is activated upon wounding and herbivory in Arabidopsis. THE NEW PHYTOLOGIST 2015; 207:996-1004. [PMID: 25996806 DOI: 10.1111/nph.13493] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/07/2015] [Indexed: 05/21/2023]
Abstract
Calcium ion (Ca(2+) ) signalling triggered by insect herbivory is an intricate network with multiple components, involving positive and negative regulators. Real-time, noninvasive imaging of entire Arabidopsis thaliana rosettes was employed to monitor cytosolic free calcium ([Ca(2+) ]cyt ) elevations in local and systemic leaves in response to wounding and Spodoptera littoralis feeding. Luminescence emitted by the cytosol-localized Ca(2+) reporter aequorin was imaged using a high-resolution photon-counting camera system. Spodoptera littoralis feeding on Arabidopsis induced both local and systemic [Ca(2+) ]cyt elevations. Systemic [Ca(2+) ]cyt signals were found predominantly in adjacent leaves with direct vascular connections to the treated leaf and appeared with a delay of 1 to 2 min. Simulated herbivory by wounding always induced a local [Ca(2+) ]cyt response, but a systemic one only when the midrib was wounded. This systemic [Ca(2+) ]cyt response was suppressed by the presence of insect-derived oral secretions as well as in a mutant of the vacuolar cation channel, Two Pore Channel 1 (TPC1). Our results provide evidence that in Arabidopsis insect herbivory induces both local and systemic [Ca(2+) ]cyt signals that distribute within the vascular system. The systemic [Ca(2+) ]cyt signal could play an important signalling role in systemic plant defence.
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Affiliation(s)
- Victoria Kiep
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Jyothilakshmi Vadassery
- Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745, Jena, Germany
- National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Justus Lattke
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Jan-Peter Maaß
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Wilhelm Boland
- Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745, Jena, Germany
| | - Edgar Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences (IAEW), Faculty of Natural Sciences III, Martin Luther University of Halle-Wittenberg, 06099, Halle (Saale), Germany
- Interdisciplinary Center of Crop Research (IZN), Martin Luther University of Halle-Wittenberg, 06099, Halle (Saale), Germany
| | - Axel Mithöfer
- Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745, Jena, Germany
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48
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Trela Z, Burdach Z, Siemieniuk A, Przestalski S, Karcz W. Effect of Trimethyltin Chloride on Slow Vacuolar (SV) Channels in Vacuoles from Red Beet (Beta vulgaris L.) Taproots. PLoS One 2015; 10:e0136346. [PMID: 26317868 PMCID: PMC4552677 DOI: 10.1371/journal.pone.0136346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 08/01/2015] [Indexed: 12/21/2022] Open
Abstract
In the present study, patch-clamp techniques have been used to investigate the effect of trimethyltin chloride (Met3SnCl) on the slow vacuolar (SV) channels in vacuoles from red beet (Beta vulgaris L.) taproots. Activity of SV channels has been measured in whole-vacuole and cytosolic side-out patch configurations. It was found that addition of trimethyltin chloride to the bath solution suppressed, in a concentration-dependent manner, SV currents in red beet vacuoles. The time constant, τ, increased significantly in the presence of the organotin. When single channel activity was analyzed, only little channel activity could be recorded at 100 μM Met3SnCl. Trimethyltin chloride added to the bath medium significantly decreased (by ca. threefold at 100 μM Met3SnCl and at 100 mV voltage, as compared to the control medium) the open probability of single channels. Single channel recordings obtained in the presence and absence of trimethyltin chloride showed that the organotin only slightly (by <10%) decreased the unitary conductance of single channels. It was also found that Met3SnCl significantly diminished the number of SV channel openings, whereas it did not change the opening times of the channels. Taking into account the above and the fact that under the here applied experimental conditions (pH = 7.5) Met3SnCl is a non-dissociated (more lipophilic) compound, we suggest that the suppression of SV currents observed in the presence of the organotin results probably from its hydrophobic properties allowing this compound to translocate near the selectivity filter of the channel.
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Affiliation(s)
- Zenon Trela
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, PL-50-375, Wrocław, Poland
| | - Zbigniew Burdach
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, PL-40-032, Katowice, Poland
| | - Agnieszka Siemieniuk
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, PL-40-032, Katowice, Poland
| | - Stanisław Przestalski
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, Norwida 25, PL-50-375, Wrocław, Poland
| | - Waldemar Karcz
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, PL-40-032, Katowice, Poland
- * E-mail:
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49
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Zhang X, Shen Z, Sun J, Yu Y, Deng S, Li Z, Sun C, Zhang J, Zhao R, Shen X, Chen S. NaCl-elicited, vacuolar Ca(2+) release facilitates prolonged cytosolic Ca(2+) signaling in the salt response of Populus euphratica cells. Cell Calcium 2015; 57:348-65. [PMID: 25840638 DOI: 10.1016/j.ceca.2015.03.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 02/24/2015] [Accepted: 03/09/2015] [Indexed: 10/23/2022]
Abstract
High environmental salt elicits an increase in cytosolic Ca(2+) ([Ca(2+)]cyt) in plants, which is generated by extracellular Ca(2+) influx and Ca(2+) release from intracellular stores, such as vacuole and endoplasmic reticulum. This study aimed to determine the physiological mechanisms underlying Ca(2+) release from vacuoles and its role in ionic homeostasis in Populus euphratica. In vivo Ca(2+) imaging showed that NaCl treatment induced a rapid elevation in [Ca(2+)]cyt, which was accompanied by a subsequent release of vacuolar Ca(2+). In cell cultures, NaCl-altered intracellular Ca(2+) mobilization was abolished by antagonists of inositol (1, 4, 5) trisphosphate (IP3) and cyclic adenosine diphosphate ribose (cADPR) signaling pathways, but not by slow vacuolar (SV) channel blockers. Furthermore, the NaCl-induced vacuolar Ca(2+) release was dependent on extracellular ATP, extracellular Ca(2+) influx, H2O2, and NO. In vitro Ca(2+) flux recordings confirmed that IP3, cADPR, and Ca(2+) induced substantial Ca(2+) efflux from intact vacuoles, but this vacuolar Ca(2+) flux did not directly respond to ATP, H2O2, or NO. Moreover, the IP3/cADPR-mediated vacuolar Ca(2+) release enhanced the expression of salt-responsive genes that regulated a wide range of cellular processes required for ion homeostasis, including cytosolic K(+) maintenance, Na(+) and Cl(-) exclusion across the plasma membrane, and Na(+)/H(+) and Cl(-)/H(+) exchanges across the vacuolar membrane.
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Affiliation(s)
- Xuan Zhang
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China
| | - Zedan Shen
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China
| | - Jian Sun
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China.
| | - Yicheng Yu
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China
| | - Shurong Deng
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China
| | - Zongyun Li
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China
| | - Cunhua Sun
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China
| | - Jian Zhang
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China
| | - Rui Zhao
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China
| | - Xin Shen
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China
| | - Shaoliang Chen
- College of Biological Sciences and Technology, Beijing Forestry University (Box 162), Beijing 100083, People's Republic of China.
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50
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Ferrero S, Carretero-Paulet L, Mendes MA, Botton A, Eccher G, Masiero S, Colombo L. Transcriptomic signatures in seeds of apple (Malus domestica L. Borkh) during fruitlet abscission. PLoS One 2015; 10:e0120503. [PMID: 25781174 PMCID: PMC4364616 DOI: 10.1371/journal.pone.0120503] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/23/2015] [Indexed: 12/15/2022] Open
Abstract
Abscission is the regulated process of detachment of an organ from a plant. In apple the abscission of fruits occurs during their early development to control the fruit load depending on the nutritional state of the plant. In order to control production and obtain fruits with optimal market qualities, the horticultural procedure of thinning is performed to further reduce the number of fruitlets. In this study we have conducted a transcriptomic profiling of seeds from two different types of fruitlets, according to size and position in the fruit cluster. Transcriptomic profiles of central and lateral fruit seeds were obtained by RNAseq. Comparative analysis was performed by the functional categorization of differentially expressed genes by means of Gene Ontology (GO) annotation of the apple genome. Our results revealed the overexpression of genes involved in responses to stress, hormone biosynthesis and also the response and/or transport of auxin and ethylene. A smaller set of genes, mainly related to ion transport and homeostasis, were found to be down-regulated. The transcriptome characterization described in this manuscript contributes to unravelling the molecular mechanisms and pathways involved in the physiological abscission of apple fruits and suggests a role for seeds in this process.
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Affiliation(s)
- Sergio Ferrero
- Dipartimento di BioScienze, Università degli Studi di Milano, Milan, Italy
| | - Lorenzo Carretero-Paulet
- Department of Biological Sciences, University at Buffalo, Buffalo, New York, United States of America
| | | | - Alessandro Botton
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, Agripolis, Legnaro, Italy
| | - Giulia Eccher
- Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, Agripolis, Legnaro, Italy
| | - Simona Masiero
- Dipartimento di BioScienze, Università degli Studi di Milano, Milan, Italy
| | - Lucia Colombo
- Dipartimento di BioScienze, Università degli Studi di Milano, Milan, Italy
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