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Zhai Y, Chen Z, Malik K, Wei X, Li C, Chen T. Regulation of mineral elements in Hordeum brevisubulatum by Epichloë bromicola under Cd stress. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1253-1268. [PMID: 38305734 DOI: 10.1080/15226514.2024.2307901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
In this study, wild barley (Hordeum brevisubulatum) infected (E+) and uninfected (E-) by Epichloë bromicola were used for hydroponic experiments during the seedling stage. Various attributes, such as the effect of fungal endophyte on the growth and development of wild barley, the absorption of cadmium (Cd) and mineral elements (Ca, Mg, Fe, Mn, Cu, Zn), subcellular distribution, and chemical forms were investigated under CdCl2 stress. The results showed that the fungal endophy significantly reduced the Ca content and percentage of plant roots under Cd stress. The Fe and Mn content of roots, the mineral element content of soluble fractions, and the stems in the pectin acid or protein-chelated state increased significantly in response to fungal endophy. Epichloë endophyte helped Cd2+ to enter into plants; and reduced the positive correlation of Ca-Fe and Ca-Mn in roots. In addition, it also decreased the correlation of soluble components Cd-Cu, Cd-Ca, Cd-Mg in roots, and the negative correlation between pectin acid or protein-chelated Cd in stems and mineral elements, to increase the absorbance of host for mineral elements. In conclusion, fungal endophy regulated the concentration and distribution of mineral elements, while storing more Cd2+ to resist the damage caused by Cd stress. The study could provide a ground for revealing the Cd tolerance mechanism of endophytic fungal symbionts.
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Affiliation(s)
- Yurun Zhai
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zhenjiang Chen
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Kamran Malik
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xuekai Wei
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Chunjie Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Taixiang Chen
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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Borghi M, Pacifico D, Crucitti D, Squartini A, Berger MMJ, Gamboni M, Carimi F, Lehad A, Costa A, Gallusci P, Fernie AR, Zottini M. Smart selection of soil microbes for resilient and sustainable viticulture. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:1258-1267. [PMID: 38329213 DOI: 10.1111/tpj.16674] [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: 11/16/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/09/2024]
Abstract
The grapevine industry is of high economic importance in several countries worldwide. Its growing market demand led to an acceleration of the entire production processes, implying increasing use of water resources at the expense of environmental water balance and the hydrological cycle. Furthermore, in recent decades climate change and the consequent expansion of drought have further compromised water availability, making current agricultural systems even more fragile from ecological and economical perspectives. Consequently, farmers' income and welfare are increasingly unpredictable and unstable. Therefore, it is urgent to improve the resilience of vineyards, and of agro-ecosystems in general, by developing sustainable and environmentally friendly farming practices by more rational biological and natural resources use. The PRIMA project PROSIT addresses these challenges by characterizing and harnessing grapevine-associated microbiota to propose innovative and sustainable agronomic practices. PROSIT aims to determine the efficacy of natural microbiomes transferred from grapevines adapted to arid climate to commonly cultivated grapevine cultivars. In doing so it will test those natural microbiome effects on drought tolerance. This multidisciplinary project will utilize in vitro culture techniques, bioimaging, microbiological tests, metabolomics, metabarcoding and epigenetic analyses. These will be combined to shed light on molecular mechanisms triggered in plants by microbial associations upon water stress. To this end it is hoped that the project will serve as a blueprint not only for studies uncovering the microbiome role in drought stress in a wide range of species, but also for analyzing its effect on a wide range of stresses commonly encountered in modern agricultural systems.
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Affiliation(s)
- Monica Borghi
- Department of Biology, Utah State University, Logan, Utah, 84321-5305, USA
| | - Davide Pacifico
- IBBR CNR - Institute of Biosciences and Bioresources, via Ugo La Malfa 153, 90146, Palermo, Italy
| | - Dalila Crucitti
- IBBR CNR - Institute of Biosciences and Bioresources, via Ugo La Malfa 153, 90146, Palermo, Italy
| | - Andrea Squartini
- Department of Agronomy, Animals, Food, Natural Resources, and Environment, Università degli Studi di Padova, Viale dell'Università 16, 35020, Legnaro, Padua, Italy
| | - Margot M J Berger
- UMR Ecophysiologie et Génomique Fonctionnelle de la Vigne, University of Bordeaux, INRAE, Bordeaux Science Agro, 210 Chemin de Leyssottes, 33882, Villenave d'Ornon, France
| | - Mauro Gamboni
- IBBR CNR - Institute of Biosciences and Bioresources, via Ugo La Malfa 153, 90146, Palermo, Italy
| | - Francesco Carimi
- IBBR CNR - Institute of Biosciences and Bioresources, via Ugo La Malfa 153, 90146, Palermo, Italy
| | - Arezki Lehad
- ENSA, Rue Hassan Badi, Belfort, El Harrach, 16000, Algeria
| | - Alex Costa
- Department of Biosciences, University of Milan, via Celoria 26, 20133, Milano, Italy
| | - Philippe Gallusci
- UMR Ecophysiologie et Génomique Fonctionnelle de la Vigne, University of Bordeaux, INRAE, Bordeaux Science Agro, 210 Chemin de Leyssottes, 33882, Villenave d'Ornon, France
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
| | - Michela Zottini
- Department of Biology, Università degli Studi di Padova, via U. Bassi 58b, 35131, Padova, Italy
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Jensen GC, Janis MK, Nguyen HN, David OW, Zastrow ML. Fluorescent Protein-Based Sensors for Detecting Essential Metal Ions across the Tree of Life. ACS Sens 2024; 9:1622-1643. [PMID: 38587931 PMCID: PMC11073808 DOI: 10.1021/acssensors.3c02695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Genetically encoded fluorescent metal ion sensors are powerful tools for elucidating metal dynamics in living systems. Over the last 25 years since the first examples of genetically encoded fluorescent protein-based calcium indicators, this toolbox of probes has expanded to include other essential and non-essential metal ions. Collectively, these tools have illuminated fundamental aspects of metal homeostasis and trafficking that are crucial to fields ranging from neurobiology to human nutrition. Despite these advances, much of the application of metal ion sensors remains limited to mammalian cells and tissues and a limited number of essential metals. Applications beyond mammalian systems and in vivo applications in living organisms have primarily used genetically encoded calcium ion sensors. The aim of this Perspective is to provide, with the support of historical and recent literature, an updated and critical view of the design and use of fluorescent protein-based sensors for detecting essential metal ions in various organisms. We highlight the historical progress and achievements with calcium sensors and discuss more recent advances and opportunities for the detection of other essential metal ions. We also discuss outstanding challenges in the field and directions for future studies, including detecting a wider variety of metal ions, developing and implementing a broader spectral range of sensors for multiplexing experiments, and applying sensors to a wider range of single- and multi-species biological systems.
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Affiliation(s)
- Gary C Jensen
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Makena K Janis
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Hazel N Nguyen
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Ogonna W David
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Melissa L Zastrow
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
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Giovannetti M, Binci F, Navazio L, Genre A. Nonbinary fungal signals and calcium-mediated transduction in plant immunity and symbiosis. THE NEW PHYTOLOGIST 2024; 241:1393-1400. [PMID: 38013492 DOI: 10.1111/nph.19433] [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: 07/26/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
Chitin oligomers (COs) are among the most common and active fungal elicitors of plant responses. Short-chain COs from symbiotic arbuscular mycorrhizal fungi activate accommodation responses in the host root, while long-chain COs from pathogenic fungi are acknowledged to trigger defence responses. The modulation of intracellular calcium concentration - a common second messenger in a wide variety of plant signal transduction processes - plays a central role in both signalling pathways with distinct signature features. Nevertheless, mounting evidence suggests that plant immunity and symbiosis signalling partially overlap at multiple levels. Here, we elaborate on recent findings on this topic, highlighting the nonbinary nature of chitin-based fungal signals, their perception and their interpretation through Ca2+ -mediated intracellular signals. Based on this, we propose that plant perception of symbiotic and pathogenic fungi is less clear-cut than previously described and involves a more complex scenario in which partially overlapping and blurred signalling mechanisms act upstream of the unambiguous regulation of gene expression driving accommodation or defence responses.
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Affiliation(s)
- Marco Giovannetti
- Department of Life Sciences and Systems Biology, University of Torino, 10125, Torino, Italy
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Filippo Binci
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Lorella Navazio
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Andrea Genre
- Department of Life Sciences and Systems Biology, University of Torino, 10125, Torino, Italy
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Binci F, Offer E, Crosino A, Sciascia I, Kleine-Vehn J, Genre A, Giovannetti M, Navazio L. Spatially and temporally distinct Ca2+ changes in Lotus japonicus roots orient fungal-triggered signalling pathways towards symbiosis or immunity. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:605-619. [PMID: 37712520 DOI: 10.1093/jxb/erad360] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/13/2023] [Indexed: 09/16/2023]
Abstract
Plants activate an immune or symbiotic response depending on the detection of distinct signals from root-interacting microbes. Both signalling cascades involve Ca2+ as a central mediator of early signal transduction. In this study, we combined aequorin- and cameleon-based methods to dissect the changes in cytosolic and nuclear Ca2+ concentration caused by different chitin-derived fungal elicitors in Lotus japonicus roots. Our quantitative analyses highlighted the dual character of the evoked Ca2+ responses taking advantage of the comparison between different genetic backgrounds: an initial Ca2+ influx, dependent on the LysM receptor CERK6 and independent of the common symbiotic signalling pathway (CSSP), is followed by a second CSSP-dependent and CERK6-independent phase, that corresponds to the well-known perinuclear/nuclear Ca2+ spiking. We show that the expression of immunity marker genes correlates with the amplitude of the first Ca2+ change, depends on elicitor concentration, and is controlled by Ca2+ storage in the vacuole. Our findings provide an insight into the Ca2+-mediated signalling mechanisms discriminating plant immunity- and symbiosis-related pathways in the context of their simultaneous activation by single fungal elicitors.
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Affiliation(s)
- Filippo Binci
- Department of Biology, University of Padova, 35131 Padova, Italy
| | - Elisabetta Offer
- Department of Biology, University of Padova, 35131 Padova, Italy
| | - Andrea Crosino
- Department of Life Sciences and Systems Biology, University of Torino, 10125 Torino, Italy
| | - Ivan Sciascia
- Department of Life Sciences and Systems Biology, University of Torino, 10125 Torino, Italy
| | - Jürgen Kleine-Vehn
- Centre for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, 79104 Freiburg, Germany
- Institute of Biology II, Department of Molecular Plant Physiology (MoPP), University of Freiburg, 79104 Freiburg, Germany
| | - Andrea Genre
- Department of Life Sciences and Systems Biology, University of Torino, 10125 Torino, Italy
| | - Marco Giovannetti
- Department of Biology, University of Padova, 35131 Padova, Italy
- Department of Life Sciences and Systems Biology, University of Torino, 10125 Torino, Italy
| | - Lorella Navazio
- Department of Biology, University of Padova, 35131 Padova, Italy
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Zeng Y, Verstraeten I, Trinh HK, Lardon R, Schotte S, Olatunji D, Heugebaert T, Stevens C, Quareshy M, Napier R, Nastasi SP, Costa A, De Rybel B, Bellini C, Beeckman T, Vanneste S, Geelen D. Chemical induction of hypocotyl rooting reveals extensive conservation of auxin signalling controlling lateral and adventitious root formation. THE NEW PHYTOLOGIST 2023; 240:1883-1899. [PMID: 37787103 DOI: 10.1111/nph.19292] [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: 04/27/2023] [Accepted: 08/19/2023] [Indexed: 10/04/2023]
Abstract
Upon exposure to light, etiolated Arabidopsis seedlings form adventitious roots (AR) along the hypocotyl. While processes underlying lateral root formation are studied intensively, comparatively little is known about the molecular processes involved in the initiation of hypocotyl AR. AR and LR formation were studied using a small molecule named Hypocotyl Specific Adventitious Root INducer (HYSPARIN) that strongly induces AR but not LR formation. HYSPARIN does not trigger rapid DR5-reporter activation, DII-Venus degradation or Ca2+ signalling. Transcriptome analysis, auxin signalling reporter lines and mutants show that HYSPARIN AR induction involves nuclear TIR1/AFB and plasma membrane TMK auxin signalling, as well as multiple downstream LR development genes (SHY2/IAA3, PUCHI, MAKR4 and GATA23). Comparison of the AR and LR induction transcriptome identified SAURs, AGC kinases and OFP transcription factors as specifically upregulated by HYSPARIN. Members of the SAUR19 subfamily, OFP4 and AGC2 suppress HYS-induced AR formation. While SAUR19 and OFP subfamily members also mildly modulate LR formation, AGC2 regulates only AR induction. Analysis of HYSPARIN-induced AR formation uncovers an evolutionary conservation of auxin signalling controlling LR and AR induction in Arabidopsis seedlings and identifies SAUR19, OFP4 and AGC2 kinase as novel regulators of AR formation.
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Affiliation(s)
- Yinwei Zeng
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Inge Verstraeten
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Hoang Khai Trinh
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
- Institute of Food and Biotechnology, Can Tho University, 900000, Can Tho City, Vietnam
| | - Robin Lardon
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Sebastien Schotte
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Damilola Olatunji
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Thomas Heugebaert
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Christian Stevens
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Mussa Quareshy
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Richard Napier
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Sara Paola Nastasi
- Department of Biosciences, University of Milan, via Celoria 26, 20133, Milan, Italy
| | - Alex Costa
- Department of Biosciences, University of Milan, via Celoria 26, 20133, Milan, Italy
- Institute of Biophysics, National Research Council of Italy (CNR), 20133, Milan, Italy
| | - Bert De Rybel
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, SE-90736, Umeå, Sweden
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000, Versailles, France
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Steffen Vanneste
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Danny Geelen
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
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Zhang Y, Zhang D, Huang S, Ye N, He Y. Real-time calcium imaging in living plants. TRENDS IN PLANT SCIENCE 2023; 28:1326-1327. [PMID: 37580224 DOI: 10.1016/j.tplants.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 06/26/2023] [Accepted: 07/17/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Yachun Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Donghui Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Shanjin Huang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100000, China
| | - Nenghui Ye
- Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha 410128, China
| | - Yuchi He
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China.
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Yang X, Guan H, Yang Y, Zhang Y, Su W, Song S, Liu H, Chen R, Hao Y. Extra- and intranuclear heat perception and triggering mechanisms in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1276649. [PMID: 37860244 PMCID: PMC10582638 DOI: 10.3389/fpls.2023.1276649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/20/2023] [Indexed: 10/21/2023]
Abstract
The escalating impact of global warming on crop yield and quality poses a significant threat to future food supplies. Breeding heat-resistant crop varieties holds promise, but necessitates a deeper understanding of the molecular mechanisms underlying plant heat tolerance. Recent studies have shed light on the initial events of heat perception in plants. In this review, we provide a comprehensive summary of the recent progress made in unraveling the mechanisms of heat perception and response in plants. Calcium ion (Ca2+), hydrogen peroxide (H2O2), and nitric oxide (NO) have emerged as key participants in heat perception. Furthermore, we discuss the potential roles of the NAC transcription factor NTL3, thermo-tolerance 3.1 (TT3.1), and Target of temperature 3 (TOT3) as thermosensors associated with the plasma membrane. Additionally, we explore the involvement of cytoplasmic HISTONE DEACETYLASE 9 (HDA9), mRNA encoding the phytochrome-interacting factor 7 (PIF7), and chloroplasts in mediating heat perception. This review also highlights the role of intranuclear transcriptional condensates formed by phytochrome B (phyB), EARLY FLOWERING 3 (ELF3), and guanylate-binding protein (GBP)-like GTPase 3 (GBPL3) in heat perception. Finally, we raise the unresolved questions in the field of heat perception that require further investigation in the future.
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Affiliation(s)
| | | | | | | | | | | | | | - Riyuan Chen
- College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Yanwei Hao
- College of Horticulture, South China Agricultural University, Guangzhou, China
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Costa A, Resentini F, Buratti S, Bonza MC. Plant Ca 2+-ATPases: From biochemistry to signalling. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119508. [PMID: 37290725 DOI: 10.1016/j.bbamcr.2023.119508] [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: 01/25/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/10/2023]
Abstract
Calcium (Ca2+)-ATPases are ATP-dependent enzymes that transport Ca2+ ions against their electrochemical gradient playing the fundamental biological function of keeping the free cytosolic Ca2+ concentration in the submicromolar range to prevent cytotoxic effects. In plants, type IIB autoinhibited Ca2+-ATPases (ACAs) are localised both at the plasma membrane and at the endomembranes including endoplasmic reticulum (ER) and tonoplast and their activity is primarily regulated by Ca2+-dependent mechanisms. Instead, type IIA ER-type Ca2+-ATPases (ECAs) are present mainly at the ER and Golgi Apparatus membranes and are active at resting Ca2+. Whereas research in plants has historically focused on the biochemical characterization of these pumps, more recently the attention has been also addressed on the physiological roles played by the different isoforms. This review aims to highlight the main biochemical properties of both type IIB and type IIA Ca2+ pumps and their involvement in the shaping of cellular Ca2+ dynamics induced by different stimuli.
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Affiliation(s)
- Alex Costa
- Department of Biosciences, University of Milan, via Celoria 26, 20133 Milano, Italy; Institute of Biophysics, National Research Council of Italy (CNR), 20133 Milano, Italy.
| | - Francesca Resentini
- Department of Biosciences, University of Milan, via Celoria 26, 20133 Milano, Italy
| | - Stefano Buratti
- Department of Biosciences, University of Milan, via Celoria 26, 20133 Milano, Italy.
| | - Maria Cristina Bonza
- Department of Biosciences, University of Milan, via Celoria 26, 20133 Milano, Italy.
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Pivato M, Grenzi M, Costa A, Ballottari M. Compartment-specific Ca 2+ imaging in the green alga Chlamydomonas reinhardtii reveals high light-induced chloroplast Ca 2+ signatures. THE NEW PHYTOLOGIST 2023; 240:258-271. [PMID: 37488718 DOI: 10.1111/nph.19142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/26/2023] [Indexed: 07/26/2023]
Abstract
To investigate the role of intracellular Ca2+ signaling in the perception and response mechanisms to light in unicellular microalgae, the genetically encoded ratiometric Ca2+ indicator Yellow Cameleon (YC3.6) was expressed in the model organism for green algae Chlamydomonas reinhardtii, targeted to cytosol, chloroplast, and mitochondria. Through in vivo single-cell confocal microscopy imaging, light-induced Ca2+ signaling was investigated in different conditions and different genotypes, including the photoreceptors mutants phot and acry. A genetically encoded H2 O2 sensor was also adopted to investigate the possible role of H2 O2 formation in light-dependent Ca2+ signaling. Light-dependent Ca2+ response was observed in Chlamydomonas reinhardtii cells only in the chloroplast as an organelle-autonomous response, influenced by light intensity and photosynthetic electron transport. The absence of blue and red-light photoreceptor aCRY strongly reduced the light-dependent chloroplast Ca2+ response, while the absence of the blue photoreceptor PHOT had no significant effects. A correlation between high light-induced chloroplast H2 O2 gradients and Ca2+ transients was drawn, supported by H2 O2 -induced chloroplast Ca2+ transients in the dark. In conclusion, different triggers are involved in the light-induced chloroplast Ca2+ signaling as saturation of the photosynthetic electron transport, H2 O2 formation, and aCRY-dependent light perception.
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Affiliation(s)
- Matteo Pivato
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134, Verona, Italy
| | - Matteo Grenzi
- Department of Biosciences, University of Milan, Via Giovanni Celoria 26, 20133, Milan, Italy
| | - Alex Costa
- Department of Biosciences, University of Milan, Via Giovanni Celoria 26, 20133, Milan, Italy
- Institute of Biophysics, National Research Council of Italy (CNR), Milan, 20133, Italy
| | - Matteo Ballottari
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134, Verona, Italy
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Pantazopoulou CK, Buti S, Nguyen CT, Oskam L, Weits DA, Farmer EE, Kajala K, Pierik R. Mechanodetection of neighbor plants elicits adaptive leaf movements through calcium dynamics. Nat Commun 2023; 14:5827. [PMID: 37730832 PMCID: PMC10511701 DOI: 10.1038/s41467-023-41530-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 09/07/2023] [Indexed: 09/22/2023] Open
Abstract
Plants detect their neighbors via various cues, including reflected light and touching of leaf tips, which elicit upward leaf movement (hyponasty). It is currently unknown how touch is sensed and how the signal is transferred from the leaf tip to the petiole base that drives hyponasty. Here, we show that touch-induced hyponasty involves a signal transduction pathway that is distinct from light-mediated hyponasty. We found that mechanostimulation of the leaf tip upon touching causes cytosolic calcium ([Ca2+]cyt induction in leaf tip trichomes that spreads towards the petiole. Both perturbation of the calcium response and the absence of trichomes reduce touch-induced hyponasty. Finally, using plant competition assays, we show that touch-induced hyponasty is adaptive in dense stands of Arabidopsis. We thus establish a novel, adaptive mechanism regulating hyponastic leaf movement in response to mechanostimulation by neighbors in dense vegetation.
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Affiliation(s)
- Chrysoula K Pantazopoulou
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands.
| | - Sara Buti
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands
| | - Chi Tam Nguyen
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Lisa Oskam
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands
| | - Daan A Weits
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands
| | - Edward E Farmer
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Kaisa Kajala
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands
| | - Ronald Pierik
- Plant-Environment Signaling, Institute of Environment Biology, Utrecht University, Utrecht, The Netherlands.
- Laboratory of Molecular Biology, Wageningen University, Wageningen, The Netherlands.
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12
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Ugalde JM, Maric A. In my own time: A non-cell-autonomous circadian regulation in plant cells. PLANT PHYSIOLOGY 2023; 193:159-161. [PMID: 37216915 PMCID: PMC10469400 DOI: 10.1093/plphys/kiad303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/08/2023] [Accepted: 05/08/2023] [Indexed: 05/24/2023]
Affiliation(s)
- José Manuel Ugalde
- Assistant Features Editor, Plant Physiology, American Society of Plant Biologists, Rockville, MD, USA
- Institute of Crop Science and Resource Conservation (INRES)-Chemical Signalling, University of Bonn, 53113 Bonn, Germany
| | - Aida Maric
- Assistant Features Editor, Plant Physiology, American Society of Plant Biologists, Rockville, MD, USA
- CIBSS-Centre for Integrative Biological Signalling Studies, University of Freiburg, 79104, Freiburg, Germany
- Plant Environmental Signalling and Development, Institute of Biology III, University of Freiburg, 79104 Freiburg, Germany
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13
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Daloso DDM, Morais EG, Oliveira E Silva KF, Williams TCR. Cell-type-specific metabolism in plants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:1093-1114. [PMID: 36987968 DOI: 10.1111/tpj.16214] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/20/2023] [Accepted: 03/25/2023] [Indexed: 05/31/2023]
Abstract
Every plant organ contains tens of different cell types, each with a specialized function. These functions are intrinsically associated with specific metabolic flux distributions that permit the synthesis of the ATP, reducing equivalents and biosynthetic precursors demanded by the cell. Investigating such cell-type-specific metabolism is complicated by the mosaic of different cells within each tissue combined with the relative scarcity of certain types. However, techniques for the isolation of specific cells, their analysis in situ by microscopy, or modeling of their function in silico have permitted insight into cell-type-specific metabolism. In this review we present some of the methods used in the analysis of cell-type-specific metabolism before describing what we know about metabolism in several cell types that have been studied in depth; (i) leaf source and sink cells; (ii) glandular trichomes that are capable of rapid synthesis of specialized metabolites; (iii) guard cells that must accumulate large quantities of the osmolytes needed for stomatal opening; (iv) cells of seeds involved in storage of reserves; and (v) the mesophyll and bundle sheath cells of C4 plants that participate in a CO2 concentrating cycle. Metabolism is discussed in terms of its principal features, connection to cell function and what factors affect the flux distribution. Demand for precursors and energy, availability of substrates and suppression of deleterious processes are identified as key factors in shaping cell-type-specific metabolism.
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Affiliation(s)
- Danilo de Menezes Daloso
- Lab Plant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza-CA, 60451-970, Brazil
| | - Eva Gomes Morais
- Lab Plant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza-CA, 60451-970, Brazil
| | - Karen Fernanda Oliveira E Silva
- Departamento de Botânica, Instituto de Ciências Biológicas, Universidade de Brasília, Asa Norte, Brasília-DF, 70910-900, Brazil
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14
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Hedrich R, Müller TD, Marten I, Becker D. TPC1 vacuole SV channel gains further shape - voltage priming of calcium-dependent gating. TRENDS IN PLANT SCIENCE 2023; 28:673-684. [PMID: 36740491 DOI: 10.1016/j.tplants.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/20/2022] [Accepted: 01/11/2023] [Indexed: 05/13/2023]
Abstract
Across phyla, voltage-gated ion channels (VGICs) allow excitability. The vacuolar two-pore channel AtTPC1 from the tiny mustard plant Arabidopsis thaliana has emerged as a paradigm for deciphering the role of voltage and calcium signals in membrane excitation. Among the numerous experimentally determined structures of VGICs, AtTPC1 was the first to be revealed in a closed and resting state, fueling speculation about structural rearrangements during channel activation. Two independent reports on the structure of a partially opened AtTPC1 channel protein have led to working models that offer promising insights into the molecular switches associated with the gating process. We review new structure-function models and also discuss the evolutionary impact of two-pore channels (TPCs) on K+ homeostasis and vacuolar excitability.
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Affiliation(s)
- Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Julius-von-Sachs Platz 2, 97082 Würzburg, Germany.
| | - Thomas D Müller
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Julius-von-Sachs Platz 2, 97082 Würzburg, Germany
| | - Irene Marten
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Julius-von-Sachs Platz 2, 97082 Würzburg, Germany
| | - Dirk Becker
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Julius-von-Sachs Platz 2, 97082 Würzburg, Germany
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15
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DeFalco TA, Moeder W, Yoshioka K. Editorial: Ca 2+ signalling in plant biotic interactions. FRONTIERS IN PLANT SCIENCE 2023; 14:1137001. [PMID: 36743485 PMCID: PMC9895960 DOI: 10.3389/fpls.2023.1137001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Affiliation(s)
| | - Wolfgang Moeder
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Keiko Yoshioka
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON, Canada
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16
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Calcium decoders and their targets: The holy alliance that regulate cellular responses in stress signaling. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 134:371-439. [PMID: 36858741 DOI: 10.1016/bs.apcsb.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Calcium (Ca2+) signaling is versatile communication network in the cell. Stimuli perceived by cells are transposed through Ca2+-signature, and are decoded by plethora of Ca2+ sensors present in the cell. Calmodulin, calmodulin-like proteins, Ca2+-dependent protein kinases and calcineurin B-like proteins are major classes of proteins that decode the Ca2+ signature and serve in the propagation of signals to different parts of cells by targeting downstream proteins. These decoders and their targets work together to elicit responses against diverse stress stimuli. Over a period of time, significant attempts have been made to characterize as well as summarize elements of this signaling machinery. We begin with a structural overview and amalgamate the newly identified Ca2+ sensor protein in plants. Their ability to bind Ca2+, undergo conformational changes, and how it facilitates binding to a wide variety of targets is further embedded. Subsequently, we summarize the recent progress made on the functional characterization of Ca2+ sensing machinery and in particular their target proteins in stress signaling. We have focused on the physiological role of Ca2+, the Ca2+ sensing machinery, and the mode of regulation on their target proteins during plant stress adaptation. Additionally, we also discuss the role of these decoders and their mode of regulation on the target proteins during abiotic, hormone signaling and biotic stress responses in plants. Finally, here, we have enumerated the limitations and challenges in the Ca2+ signaling. This article will greatly enable in understanding the current picture of plant response and adaptation during diverse stimuli through the lens of Ca2+ signaling.
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17
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Jiang Y, Ding P. Calcium signaling in plant immunity: a spatiotemporally controlled symphony. TRENDS IN PLANT SCIENCE 2023; 28:74-89. [PMID: 36504136 DOI: 10.1016/j.tplants.2022.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 11/04/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
Calcium ions (Ca2+) are prominent intracellular messengers in all eukaryotic cells. Recent studies have emphasized the crucial roles of Ca2+ in plant immunity. Here, we review the latest progress on the spatiotemporal control of Ca2+ function in plant immunity. We discuss discoveries of how Ca2+ influx is triggered upon the activation of immune receptors, how Ca2+-permeable channels are activated, how Ca2+ signals are decoded inside plant cells, and how these signals are switched off. Despite recent advances, many open questions remain and we highlight the existing toolkit and the new technologies to address the outstanding questions of Ca2+ signaling in plant immunity.
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Affiliation(s)
- Yuxiang Jiang
- Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK.
| | - Pingtao Ding
- Institute of Biology Leiden, Leiden University, Sylviusweg 72, Leiden 2333, BE, The Netherlands.
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18
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Toyota M, Betsuyaku S. In vivo Imaging Enables Understanding of Seamless Plant Defense Responses to Wounding and Pathogen Attack. PLANT & CELL PHYSIOLOGY 2022; 63:1391-1404. [PMID: 36165346 DOI: 10.1093/pcp/pcac135] [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: 06/04/2022] [Revised: 08/31/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Plants are exposed to varied biotic stresses, including sequential or simultaneous attack by insects and pathogens. To overcome these complex stresses, plants must perceive each of the stresses, then integrate and relay the information throughout the plant body and eventually activate local and systemic resistance responses. Previous molecular genetic studies identified jasmonic acid and salicylic acid as key plant hormones of wound and immune responses. These hormones, combined with their antagonistic interaction, play critical roles in the initiation and regulation of defense responses against insects and pathogens. Aside from molecular and genetic information, the latest in vivo imaging technology has revealed that plant defense responses are regulated spatially and temporally. In this review, we summarize the current knowledge of local and systemic defense responses against wounding and diseases with a focus on past and recent advances in imaging technologies. We discuss how imaging-based multiparametric analysis has improved our understanding of the spatiotemporal regulation of dynamic plant stress responses. We also emphasize the importance of compiling the knowledge generated from individual studies on plant wounding and immune responses for a more seamless understanding of plant defense responses in the natural environment.
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Affiliation(s)
- Masatsugu Toyota
- Department of Biochemistry and Molecular Biology, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama, 338-8570 Japan
- Suntory Rising Stars Encouragement Program in Life Sciences (SunRiSE), Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto, 619-0284 Japan
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA
| | - Shigeyuki Betsuyaku
- Department of Plant Life Science, Faculty of Agriculture, Ryukoku University, 1-5 Yokotani, Seta Oe-cho, Otsu, Shiga, 520-2194 Japan
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19
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Ruberti C, Feitosa-Araujo E, Xu Z, Wagner S, Grenzi M, Darwish E, Lichtenauer S, Fuchs P, Parmagnani AS, Balcerowicz D, Schoenaers S, de la Torre C, Mekkaoui K, Nunes-Nesi A, Wirtz M, Vissenberg K, Van Aken O, Hause B, Costa A, Schwarzländer M. MCU proteins dominate in vivo mitochondrial Ca2+ uptake in Arabidopsis roots. THE PLANT CELL 2022; 34:4428-4452. [PMID: 35938694 PMCID: PMC9614509 DOI: 10.1093/plcell/koac242] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Ca2+ signaling is central to plant development and acclimation. While Ca2+-responsive proteins have been investigated intensely in plants, only a few Ca2+-permeable channels have been identified, and our understanding of how intracellular Ca2+ fluxes is facilitated remains limited. Arabidopsis thaliana homologs of the mammalian channel-forming mitochondrial calcium uniporter (MCU) protein showed Ca2+ transport activity in vitro. Yet, the evolutionary complexity of MCU proteins, as well as reports about alternative systems and unperturbed mitochondrial Ca2+ uptake in knockout lines of MCU genes, leave critical questions about the in vivo functions of the MCU protein family in plants unanswered. Here, we demonstrate that MCU proteins mediate mitochondrial Ca2+ transport in planta and that this mechanism is the major route for fast Ca2+ uptake. Guided by the subcellular localization, expression, and conservation of MCU proteins, we generated an mcu triple knockout line. Using Ca2+ imaging in living root tips and the stimulation of Ca2+ transients of different amplitudes, we demonstrated that mitochondrial Ca2+ uptake became limiting in the triple mutant. The drastic cell physiological phenotype of impaired subcellular Ca2+ transport coincided with deregulated jasmonic acid-related signaling and thigmomorphogenesis. Our findings establish MCUs as a major mitochondrial Ca2+ entry route in planta and link mitochondrial Ca2+ transport with phytohormone signaling.
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Affiliation(s)
| | - Elias Feitosa-Araujo
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, D-48143, Germany
| | - Zhaolong Xu
- Department of Biosciences, University of Milano, Milan, I-20133, Italy
- Jiangsu Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | | | - Matteo Grenzi
- Department of Biosciences, University of Milano, Milan, I-20133, Italy
| | - Essam Darwish
- Department of Biology, Lund University, Lund, 22362, Sweden
- Agricultural Botany Department, Faculty of Agriculture, Plant Physiology Section, Cairo University, Giza, 12613, Egypt
| | - Sophie Lichtenauer
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, D-48143, Germany
| | | | | | - Daria Balcerowicz
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
| | - Sébastjen Schoenaers
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
| | - Carolina de la Torre
- NGS Core Facility, Medical Faculty Mannheim, University of Heidelberg, Mannheim, D-68167, Germany
| | - Khansa Mekkaoui
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), D-06120, Germany
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil
| | - Markus Wirtz
- Centre for Organismal Studies (COS) Heidelberg, University of Heidelberg, Heidelberg, D-69120, Germany
| | - Kris Vissenberg
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
- Department of Agriculture, Plant Biochemistry and Biotechnology Lab, Hellenic Mediterranean University, Heraklion, 71410, Greece
| | | | - Bettina Hause
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), D-06120, Germany
| | - Alex Costa
- Authors for correspondence: (A.C); (M.S.)
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20
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Parmagnani AS, Maffei ME. Calcium Signaling in Plant-Insect Interactions. PLANTS (BASEL, SWITZERLAND) 2022; 11:2689. [PMID: 36297718 PMCID: PMC9609891 DOI: 10.3390/plants11202689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
In plant-insect interactions, calcium (Ca2+) variations are among the earliest events associated with the plant perception of biotic stress. Upon herbivory, Ca2+ waves travel long distances to transmit and convert the local signal to a systemic defense program. Reactive oxygen species (ROS), Ca2+ and electrical signaling are interlinked to form a network supporting rapid signal transmission, whereas the Ca2+ message is decoded and relayed by Ca2+-binding proteins (including calmodulin, Ca2+-dependent protein kinases, annexins and calcineurin B-like proteins). Monitoring the generation of Ca2+ signals at the whole plant or cell level and their long-distance propagation during biotic interactions requires innovative imaging techniques based on sensitive sensors and using genetically encoded indicators. This review summarizes the recent advances in Ca2+ signaling upon herbivory and reviews the most recent Ca2+ imaging techniques and methods.
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21
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Quantitative Analysis of Plant Cytosolic Calcium Signals in Response to Water Activated by Low-Power Non-Thermal Plasma. Int J Mol Sci 2022; 23:ijms231810752. [PMID: 36142664 PMCID: PMC9506352 DOI: 10.3390/ijms231810752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/27/2022] [Accepted: 09/06/2022] [Indexed: 11/25/2022] Open
Abstract
Non-thermal plasma technology is increasingly being applied in the plant biology field. Despite the variety of beneficial effects of plasma-activated water (PAW) on plants, information about the mechanisms of PAW sensing by plants is still limited. In this study, in order to link PAW perception to the positive downstream responses of plants, transgenic Arabidopsis thaliana seedlings expressing the Ca2+-sensitive photoprotein aequorin in the cytosol were challenged with water activated by low-power non-thermal plasma generated by a dielectric barrier discharge (DBD) source. PAW sensing by plants resulted in the occurrence of cytosolic Ca2+ signals, whose kinetic parameters were found to strictly depend on the operational conditions of the plasma device and thus on the corresponding mixture of chemical species contained in the PAW. In particular, we highlighted the effect on the intracellular Ca2+ signals of low doses of DBD-PAW chemicals and also presented the effects of consecutive plant treatments. The results were discussed in terms of the possibility of using PAW-triggered Ca2+ signatures as benchmarks to accurately modulate the chemical composition of PAW in order to induce environmental stress resilience in plants, thus paving the way for further applications in agriculture.
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22
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Pei S, Liu Y, Li W, Krichilsky B, Dai S, Wang Y, Wang X, Johnson DM, Crawford BM, Swift GB, Vo-Dinh T, Pei ZM, Yuan F. OSCA1 is an osmotic specific sensor: a method to distinguish Ca 2+ -mediated osmotic and ionic perception. THE NEW PHYTOLOGIST 2022; 235:1665-1678. [PMID: 35527515 DOI: 10.1111/nph.18217] [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: 02/14/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
Genetic mutants defective in stimulus-induced Ca2+ increases have been gradually isolated, allowing the identification of cell-surface sensors/receptors, such as the osmosensor OSCA1. However, determining the Ca2+ -signaling specificity to various stimuli in these mutants remains a challenge. For instance, less is known about the exact selectivity between osmotic and ionic stresses in the osca1 mutant. Here, we have developed a method to distinguish the osmotic and ionic effects by analyzing Ca2+ increases, and demonstrated that osca1 is impaired primarily in Ca2+ increases induced by the osmotic but not ionic stress. We recorded Ca2+ increases induced by sorbitol (osmotic effect, OE) and NaCl/CaCl2 (OE + ionic effect, IE) in Arabidopsis wild-type and osca1 seedlings. We assumed the NaCl/CaCl2 total effect (TE) = OE + IE, then developed procedures for Ca2+ imaging, image analysis and mathematic fitting/modeling, and found osca1 defects mainly in OE. The osmotic specificity of osca1 suggests that osmotic and ionic perceptions are independent. The precise estimation of these two stress effects is applicable not only to new Ca2+ -signaling mutants with distinct stimulus specificity but also the complex Ca2+ signaling crosstalk among multiple concurrent stresses that occur naturally, and will enable us to specifically fine tune multiple signal pathways to improve crop yields.
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Affiliation(s)
- Songyu Pei
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yuantao Liu
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Wenke Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | | | - Shiwen Dai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yan Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Xi Wang
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | | | - Bridget M Crawford
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Gary B Swift
- Department of Physics, Duke University, Durham, NC, 27708, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Zhen-Ming Pei
- Department of Biology, Duke University, Durham, NC, 27708, USA
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
| | - Fang Yuan
- Department of Biology, Duke University, Durham, NC, 27708, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
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23
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Damineli DSC, Portes MT, Feijó JA. Electrifying rhythms in plant cells. Curr Opin Cell Biol 2022; 77:102113. [PMID: 35809387 DOI: 10.1016/j.ceb.2022.102113] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 05/10/2022] [Accepted: 06/05/2022] [Indexed: 12/12/2022]
Abstract
Physiological oscillations (or rhythms) pervade all spatiotemporal scales of biological organization, either because they perform critical functions or simply because they can arise spontaneously and may be difficult to prevent. Regardless of the case, they reflect regulatory relationships between control points of a given system and offer insights as read-outs of the concerted regulation of a myriad of biological processes. Here we review recent advances in understanding ultradian oscillations (period < 24h) in plant cells, with a special focus on single-cell oscillations. Ion channels are at the center stage due to their involvement in electrical/excitabile phenomena associated with oscillations and cell-cell communication. We highlight the importance of quantitative approaches to measure oscillations in appropriate physiological conditions, which are essential strategies to deal with the complexity of biological rhythms. Future development of optogenetics techniques in plants will further boost research on the role of membrane potential in oscillations and waves across multiple cell types.
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Affiliation(s)
- Daniel S C Damineli
- Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, São Paulo, SP 05508-090, Brazil.
| | - Maria Teresa Portes
- Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo, SP 05508-090, Brazil
| | - José A Feijó
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742-5815, USA
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24
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Allan C, Morris RJ, Meisrimler CN. Encoding, transmission, decoding, and specificity of calcium signals in plants. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3372-3385. [PMID: 35298633 PMCID: PMC9162177 DOI: 10.1093/jxb/erac105] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Calcium acts as a signal and transmits information in all eukaryotes. Encoding machinery consisting of calcium channels, stores, buffers, and pumps can generate a variety of calcium transients in response to external stimuli, thus shaping the calcium signature. Mechanisms for the transmission of calcium signals have been described, and a large repertoire of calcium binding proteins exist that can decode calcium signatures into specific responses. Whilst straightforward as a concept, mysteries remain as to exactly how such information processing is biochemically implemented. Novel developments in imaging technology and genetically encoded sensors (such as calcium indicators), in particular for multi-signal detection, are delivering exciting new insights into intra- and intercellular calcium signaling. Here, we review recent advances in characterizing the encoding, transmission, and decoding mechanisms, with a focus on long-distance calcium signaling. We present technological advances and computational frameworks for studying the specificity of calcium signaling, highlight current gaps in our understanding and propose techniques and approaches for unravelling the underlying mechanisms.
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Affiliation(s)
- Claudia Allan
- University of Canterbury, School of Biological Science, Christchurch, New Zealand
| | - Richard J Morris
- Computational and Systems Biology, John Innes Centre, Norwich, UK
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25
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Kleist TJ, Wudick MM. Shaping up: Recent advances in the study of plant calcium channels. Curr Opin Cell Biol 2022; 76:102080. [DOI: 10.1016/j.ceb.2022.102080] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/02/2022] [Accepted: 03/13/2022] [Indexed: 12/20/2022]
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26
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Köster P, DeFalco TA, Zipfel C. Ca 2+ signals in plant immunity. EMBO J 2022; 41:e110741. [PMID: 35560235 PMCID: PMC9194748 DOI: 10.15252/embj.2022110741] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/03/2022] [Accepted: 04/27/2022] [Indexed: 12/22/2022] Open
Abstract
Calcium ions function as a key second messenger ion in eukaryotes. Spatially and temporally defined cytoplasmic Ca2+ signals are shaped through the concerted activity of ion channels, exchangers, and pumps in response to diverse stimuli; these signals are then decoded through the activity of Ca2+ -binding sensor proteins. In plants, Ca2+ signaling is central to both pattern- and effector-triggered immunity, with the generation of characteristic cytoplasmic Ca2+ elevations in response to potential pathogens being common to both. However, despite their importance, and a long history of scientific interest, the transport proteins that shape Ca2+ signals and their integration remain poorly characterized. Here, we discuss recent work that has both shed light on and deepened the mysteries of Ca2+ signaling in plant immunity.
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Affiliation(s)
- Philipp Köster
- Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland
| | - Thomas A DeFalco
- Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland
| | - Cyril Zipfel
- Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland.,The Sainsbury Laboratory, University of East Anglia, Norwich, UK
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Iqbal Z, Memon AG, Ahmad A, Iqbal MS. Calcium Mediated Cold Acclimation in Plants: Underlying Signaling and Molecular Mechanisms. FRONTIERS IN PLANT SCIENCE 2022; 13:855559. [PMID: 35574126 PMCID: PMC9094111 DOI: 10.3389/fpls.2022.855559] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/31/2022] [Indexed: 05/23/2023]
Abstract
Exposure of plants to low temperatures adversely affects plant growth, development, and productivity. Plant response to cold stress is an intricate process that involves the orchestration of various physiological, signaling, biochemical, and molecular pathways. Calcium (Ca2+) signaling plays a crucial role in the acquisition of several stress responses, including cold. Upon perception of cold stress, Ca2+ channels and/or Ca2+ pumps are activated, which induces the Ca2+ signatures in plant cells. The Ca2+ signatures spatially and temporally act inside a plant cell and are eventually decoded by specific Ca2+ sensors. This series of events results in the molecular regulation of several transcription factors (TFs), leading to downstream gene expression and withdrawal of an appropriate response by the plant. In this context, calmodulin binding transcription activators (CAMTAs) constitute a group of TFs that regulate plant cold stress responses in a Ca2+ dependent manner. The present review provides a catalog of the recent progress made in comprehending the Ca2+ mediated cold acclimation in plants.
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Affiliation(s)
- Zahra Iqbal
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Anjuman Gul Memon
- Department of Biochemistry, College of Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Ausaf Ahmad
- Amity Institute of Biotechnology, Amity University Lucknow, Lucknow, India
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28
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Xu G, Moeder W, Yoshioka K, Shan L. A tale of many families: calcium channels in plant immunity. THE PLANT CELL 2022; 34:1551-1567. [PMID: 35134212 PMCID: PMC9048905 DOI: 10.1093/plcell/koac033] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/26/2022] [Indexed: 05/24/2023]
Abstract
Plants launch a concerted immune response to dampen potential infections upon sensing microbial pathogen and insect invasions. The transient and rapid elevation of the cytosolic calcium concentration [Ca2+]cyt is among the essential early cellular responses in plant immunity. The free Ca2+ concentration in the apoplast is far higher than that in the resting cytoplasm. Thus, the precise regulation of calcium channel activities upon infection is the key for an immediate and dynamic Ca2+ influx to trigger downstream signaling. Specific Ca2+ signatures in different branches of the plant immune system vary in timing, amplitude, duration, kinetics, and sources of Ca2+. Recent breakthroughs in the studies of diverse groups of classical calcium channels highlight the instrumental role of Ca2+ homeostasis in plant immunity and cell survival. Additionally, the identification of some immune receptors as noncanonical Ca2+-permeable channels opens a new view of how immune receptors initiate cell death and signaling. This review aims to provide an overview of different Ca2+-conducting channels in plant immunity and highlight their molecular and genetic mode-of-actions in facilitating immune signaling. We also discuss the regulatory mechanisms that control the stability and activity of these channels.
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Affiliation(s)
- Guangyuan Xu
- MOA Key Laboratory of Pest Monitoring and Green Management, Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Wolfgang Moeder
- Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
| | - Keiko Yoshioka
- Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
- Center for the Analysis of Genome Evolution and Function (CAGEF), University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
| | - Libo Shan
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, USA
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29
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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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30
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Schwarzländer M, Zurbriggen MD. Sensors and controllers-for and from plants. PLANT PHYSIOLOGY 2021; 187:473-476. [PMID: 34608975 PMCID: PMC8491071 DOI: 10.1093/plphys/kiab364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 05/04/2023]
Affiliation(s)
- Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, D-48143 Münster, Germany
| | - Matias D. Zurbriggen
- Institute of Synthetic Biology and CEPLAS, University of Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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