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Joli N, Concia L, Mocaer K, Guterman J, Laude J, Guerin S, Sciandra T, Bruyant F, Ait-Mohamed O, Beguin M, Forget MH, Bourbousse C, Lacour T, Bailleul B, Nef C, Savoie M, Tremblay JE, Campbell DA, Lavaud J, Schwab Y, Babin M, Bowler C. Hypometabolism to survive the long polar night and subsequent successful return to light in the diatom Fragilariopsis cylindrus. THE NEW PHYTOLOGIST 2024; 241:2193-2208. [PMID: 38095198 DOI: 10.1111/nph.19387] [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: 06/20/2023] [Accepted: 10/17/2023] [Indexed: 02/09/2024]
Abstract
Diatoms, the main eukaryotic phytoplankton of the polar marine regions, are essential for the maintenance of food chains specific to Arctic and Antarctic ecosystems, and are experiencing major disturbances under current climate change. As such, it is fundamental to understand the physiological mechanisms and associated molecular basis of their endurance during the long polar night. Here, using the polar diatom Fragilariopsis cylindrus, we report an integrative analysis combining transcriptomic, microscopic and biochemical approaches to shed light on the strategies used to survive the polar night. We reveal that in prolonged darkness, diatom cells enter a state of quiescence with reduced metabolic and transcriptional activity, during which no cell division occurs. We propose that minimal energy is provided by respiration and degradation of protein, carbohydrate and lipid stores and that homeostasis is maintained by autophagy in prolonged darkness. We also report internal structural changes that manifest the morphological acclimation of cells to darkness, including the appearance of a large vacuole. Our results further show that immediately following a return to light, diatom cells are able to use photoprotective mechanisms and rapidly resume photosynthesis, demonstrating the remarkable robustness of polar diatoms to prolonged darkness at low temperature.
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Affiliation(s)
- Nathalie Joli
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Lorenzo Concia
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Karel Mocaer
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL) & Collaboration for Joint PhD Degree between the European Molecular Biology Laboratory and the Heidelberg University, Faculty of Biosciences, 69117, Heidelberg, Germany
| | - Julie Guterman
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Juliette Laude
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Sebastien Guerin
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Theo Sciandra
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Flavienne Bruyant
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Ouardia Ait-Mohamed
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Marine Beguin
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Marie-Helene Forget
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Clara Bourbousse
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Thomas Lacour
- Laboratoire PHYSiologie des micro ALGues (PDG-ODE-PHYTOX-PHYSALG), Centre Atlantique, 44 311, Nantes, France
| | - Benjamin Bailleul
- Laboratory of Chloroplast Biology and Light Sensing in Microalgae, Institut de Biologie Physico Chimique, CNRS, Sorbonne Université, Paris, 75005, France
| | - Charlotte Nef
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
| | - Mireille Savoie
- Département de Biologie, Université Laval, Québec, QC, G1V 0A6, Canada
| | | | | | - Johann Lavaud
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
- UMR 6539 LEMAR-Laboratory of Environmental Marine Sciences, CNRS/Univ Brest/Ifremer/IRD, IUEM-Institut Européen de la Mer, Technopôle Brest-Iroise, rue Dumont d'Urville, 29280, Plouzané, France
| | - Yannick Schwab
- Cell Biology and Biophysics Unit and Electron Microscopy Core Facility, European Molecular Biology Laboratory (EMBL), 69117, Heidelberg, Germany
| | - Marcel Babin
- Takuvik International Research Laboratory, Université Laval (Canada) & CNRS (France), Département de Biologie and Québec-Océan, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Chris Bowler
- Institut de Biologie de l'École Normale Supérieure (IBENS), École Normale Supérieure, CNRS, INSERM, PSL Université Paris, 75005, Paris, France
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Rredhi A, Petersen J, Wagner V, Vuong T, Li W, Li W, Schrader L, Mittag M. The UV-A Receptor CRY-DASH1 Up- and Downregulates Proteins Involved in Different Plastidial Pathways. J Mol Biol 2024; 436:168271. [PMID: 37699454 DOI: 10.1016/j.jmb.2023.168271] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/18/2023] [Accepted: 09/06/2023] [Indexed: 09/14/2023]
Abstract
Algae encode up to five different types of cryptochrome photoreceptors. So far, relatively little is known about the biological functions of the DASH (Drosophila, Arabidopsis, Synechocystis and Homo)-type cryptochromes. The green alga Chlamydomonas reinhardtii encodes two of them. CRY-DASH1 also called DCRY1 has its maximal absorption peak in the UV-A range. It is localized in the chloroplast and plays an important role in balancing the photosynthetic machinery. Here, we performed a comparative analysis of chloroplast proteins from wild type and a knockout mutant of CRY-DASH1 named cry-dash1mut, using label-free quantitative proteomics as well as immunoblotting. Our results show upregulation of enzymes involved in specific pathways in the mutant including key enzymes of chlorophyll and carotenoid biosynthesis consistent with increased levels of photosynthetic pigments in cry-dash1mut. There is also an increase in certain redox as well as photosystem I and II proteins, including D1. Strikingly, CRY-DASH1 is coregulated in a D1 deletion mutant, where its amount is increased. In contrast, key proteins of the central carbon metabolism, including glycolysis/gluconeogenesis, dark fermentation and the oxidative pentose phosphate pathway are downregulated in cry-dash1mut. Similarly, enzymes of histidine biosynthesis are downregulated in cry-dash1mut leading to a reduction in the amount of free histidine. Yet, transcripts encoding for several of these proteins are at a similar level in the wild type and cry-dash1mut or even opposite. We show that CRY-DASH1 can bind to RNA, taking the psbA RNA encoding D1 as target. These data suggest that CRY-DASH1 regulates plastidial metabolic pathways at the posttranscriptional level.
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Affiliation(s)
- Anxhela Rredhi
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Jan Petersen
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany. https://twitter.com/1anPetersen
| | - Volker Wagner
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Trang Vuong
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany. https://twitter.com/trangha593
| | - Wenshuang Li
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Wei Li
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Laura Schrader
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Maria Mittag
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University Jena, 07743 Jena, Germany.
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Antal TK, Volgusheva AA, Baizhumanov AA, Kukarskikh GP, Mezzi A, Caschera D, Ciasca G, Lambreva MD. Nanodiamond Particles Reduce Oxidative Stress Induced by Methyl Viologen and High Light in the Green Alga Chlamydomonas reinhardtii. Int J Mol Sci 2023; 24:ijms24065615. [PMID: 36982691 PMCID: PMC10052329 DOI: 10.3390/ijms24065615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
Widely used in biomedical and bioanalytical applications, the detonation nanodiamonds (NDs) are generally considered to be biocompatible and non-toxic to a wide range of eukaryotic cells. Due to their high susceptibility to chemical modifications, surface functionalisation is often used to tune the biocompatibility and antioxidant activity of the NDs. The response of photosynthetic microorganisms to redox-active NDs is still poorly understood and is the focus of the present study. The green microalga Chlamydomonas reinhardtii was used to assess the potential phytotoxicity and antioxidant activity of NDs hosting hydroxyl functional groups at concentrations of 5–80 μg NDs/mL. The photosynthetic capacity of microalgae was assessed by measuring the maximum quantum yield of PSII photochemistry and the light-saturated oxygen evolution rate, while oxidative stress was assessed by lipid peroxidation and ferric-reducing antioxidant capacity. We demonstrated that hydroxylated NDs might reduce cellular levels of oxidative stress, protect PSII photochemistry and facilitate the PSII repair under methyl viologen and high light associated stress conditions. Factors involved in this protection may include the low phytotoxicity of hydroxylated NDs in microalgae and their ability to accumulate in cells and scavenge reactive oxygen species. Our findings could pave the way for using hydroxylated NDs as antioxidants to improve cellular stability in algae-based biotechnological applications or semi-artificial photosynthetic systems.
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Affiliation(s)
- Taras K. Antal
- Laboratory of Integrated Ecological Research, Pskov State University, 180000 Pskov, Russia
| | - Alena A. Volgusheva
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Adil A. Baizhumanov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Galina P. Kukarskikh
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Alessio Mezzi
- Institute for the Study of Nanostructured Materials, National Research Council, Monterotondo Stazione, 00015 Rome, Italy
| | - Daniela Caschera
- Institute for the Study of Nanostructured Materials, National Research Council, Monterotondo Stazione, 00015 Rome, Italy
| | - Gabriele Ciasca
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario “A. Gemelli”, IRCCS, 00168 Rome, Italy
| | - Maya D. Lambreva
- Institute for Biological Systems, National Research Council, Monterotondo Stazione, 00015 Rome, Italy
- Correspondence:
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Antal TK, Volgusheva AA, Kukarskikh GP, Lukashev EP, Bulychev AA, Margonelli A, Orlanducci S, Leo G, Cerri L, Tyystjärvi E, Lambreva MD. Single-walled carbon nanotubes protect photosynthetic reactions in Chlamydomonas reinhardtii against photoinhibition. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 192:298-307. [PMID: 36283202 DOI: 10.1016/j.plaphy.2022.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/08/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) are among the most exploited carbon allotropes in nanosensing, bioengineering, and photobiological applications, however, the interactions of nanotubes with the photosynthetic process and structures are still poorly understood. We found that SWCNTs are not toxic to the photosynthetic apparatus of the model unicellular alga Chlamydomonas reinhardtii and demonstrate that this carbon nanomaterial can protect algal photosynthesis against photoinhibition. The results show that the inherent phytotoxicity of the nanotubes may be overcome by an intentional selection of nanomaterial characteristics. A low concentration (2 μg mL-1) of well-dispersed, purified and small SWCNTs did not alter the growth and pigment accumulation of the cultures. Indeed, under the photoinhibitory conditions of our experiments, SWCNT-enriched samples were characterized by a lower rate of PSII inactivation, reduced excitation pressure in PSII, a higher rate of photosynthetic electron transport, and an increased non-photochemical quenching in comparison with the controls. In addition, SWCNTs change the distribution of energy between the photosystems in favour of PSII (state 1). The underlying mechanism of this action is not yet understood but possibly, electrons or energy can be exchanged between the redox active nanotubes and photosynthetic components, and probably other redox active intra-chloroplast constituents. Alternatively, nanotubes may promote the formation of an NPQ conformation of PSII. Our results provided evidence for such electron/energy transfer from photosynthetic structures toward the nanotubes. The discovered photoprotective effects can potentially be used in photobiotechnology to maintain the photosynthetic activity of microorganisms under unfavourable conditions.
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Affiliation(s)
- Taras K Antal
- Laboratory of Integrated Ecological Research, Pskov State University, Krasnoarmeyskaya st. 1, Pskov, 180000, Russia.
| | - Alena A Volgusheva
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Galina P Kukarskikh
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Evgeniy P Lukashev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Alexander A Bulychev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Andrea Margonelli
- Institute of Crystallography, National Research Council, 00015, Monterotondo Stazione (RM), Italy
| | - Silvia Orlanducci
- Department of Chemical Science and Technology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Gabriella Leo
- Institute for the Study of Nanostructured Materials, National Research Council, 00015 Monterotondo Stazione (RM), Italy
| | - Luciana Cerri
- Institute for the Study of Nanostructured Materials, National Research Council, 00015 Monterotondo Stazione (RM), Italy
| | - Esa Tyystjärvi
- Department of Life Technologies/Molecular Plant Biology, University of Turku, FI-20014, Turku, Finland
| | - Maya D Lambreva
- Institute of Crystallography, National Research Council, 00015, Monterotondo Stazione (RM), Italy.
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Popa DG, Lupu C, Constantinescu-Aruxandei D, Oancea F. Humic Substances as Microalgal Biostimulants—Implications for Microalgal Biotechnology. Mar Drugs 2022; 20:md20050327. [PMID: 35621978 PMCID: PMC9143693 DOI: 10.3390/md20050327] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 02/01/2023] Open
Abstract
Humic substances (HS) act as biostimulants for terrestrial photosynthetic organisms. Their effects on plants are related to specific HS features: pH and redox buffering activities, (pseudo)emulsifying and surfactant characteristics, capacity to bind metallic ions and to encapsulate labile hydrophobic molecules, ability to adsorb to the wall structures of cells. The specific properties of HS result from the complexity of their supramolecular structure. This structure is more dynamic in aqueous solutions/suspensions than in soil, which enhances the specific characteristics of HS. Therefore, HS effects on microalgae are more pronounced than on terrestrial plants. The reported HS effects on microalgae include increased ionic nutrient availability, improved protection against abiotic stress, including against various chemical pollutants and ionic species of potentially toxic elements, higher accumulation of value-added ingredients, and enhanced bio-flocculation. These HS effects are similar to those on terrestrial plants and could be considered microalgal biostimulant effects. Such biostimulant effects are underutilized in current microalgal biotechnology. This review presents knowledge related to interactions between microalgae and humic substances and analyzes the potential of HS to enhance the productivity and profitability of microalgal biotechnology.
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Affiliation(s)
- Daria Gabriela Popa
- Faculty of Biotechnologies, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Mărăști Blv, No. 59, Sector 1, 011464 Bucharest, Romania;
- Bioproducts Team, Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independenței No. 202, Sector 6, 060021 Bucharest, Romania;
| | - Carmen Lupu
- Bioproducts Team, Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independenței No. 202, Sector 6, 060021 Bucharest, Romania;
| | - Diana Constantinescu-Aruxandei
- Bioproducts Team, Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independenței No. 202, Sector 6, 060021 Bucharest, Romania;
- Correspondence: (D.C.-A.); (F.O.)
| | - Florin Oancea
- Faculty of Biotechnologies, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Mărăști Blv, No. 59, Sector 1, 011464 Bucharest, Romania;
- Bioproducts Team, Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independenței No. 202, Sector 6, 060021 Bucharest, Romania;
- Correspondence: (D.C.-A.); (F.O.)
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6
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Phua SY, De Smet B, Remacle C, Chan KX, Van Breusegem F. Reactive oxygen species and organellar signaling. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:5807-5824. [PMID: 34009340 DOI: 10.1093/jxb/erab218] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/14/2021] [Indexed: 05/07/2023]
Abstract
The evolution of photosynthesis and its associated metabolic pathways has been crucial to the successful establishment of plants, but has also challenged plant cells in the form of production of reactive oxygen species (ROS). Intriguingly, multiple forms of ROS are generated in virtually every plant cell compartment through diverse pathways. As a result, a sophisticated network of ROS detoxification and signaling that is simultaneously tailored to individual organelles and safeguards the entire cell is necessary. Here we take an organelle-centric view on the principal sources and sinks of ROS across the plant cell and provide insights into the ROS-induced organelle to nucleus retrograde signaling pathways needed for operational readjustments during environmental stresses.
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Affiliation(s)
- Su Yin Phua
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent,Belgium
- Center for Plant Systems Biology, VIB, Ghent,Belgium
| | - Barbara De Smet
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent,Belgium
- Center for Plant Systems Biology, VIB, Ghent,Belgium
| | - Claire Remacle
- Genetics and Physiology of Microalgae, InBios/Phytosystems, Université de Liège, Liège,Belgium
| | - Kai Xun Chan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent,Belgium
- Center for Plant Systems Biology, VIB, Ghent,Belgium
| | - Frank Van Breusegem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent,Belgium
- Center for Plant Systems Biology, VIB, Ghent,Belgium
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7
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Pivato M, Ballottari M. Chlamydomonas reinhardtii cellular compartments and their contribution to intracellular calcium signalling. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:5312-5335. [PMID: 34077536 PMCID: PMC8318260 DOI: 10.1093/jxb/erab212] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/11/2021] [Indexed: 05/12/2023]
Abstract
Calcium (Ca2+)-dependent signalling plays a well-characterized role in the response to different environmental stimuli, in both plant and animal cells. In the model organism for green algae, Chlamydomonas reinhardtii, Ca2+ signals were reported to have a crucial role in different physiological processes, such as stress responses, photosynthesis, and flagella functions. Recent reports identified the underlying components of the Ca2+ signalling machinery at the level of specific subcellular compartments and reported in vivo imaging of cytosolic Ca2+ concentration in response to environmental stimuli. The characterization of these Ca2+-related mechanisms and proteins in C. reinhardtii is providing knowledge on how microalgae can perceive and respond to environmental stimuli, but also on how this Ca2+ signalling machinery has evolved. Here, we review current knowledge on the cellular mechanisms underlying the generation, shaping, and decoding of Ca2+ signals in C. reinhardtii, providing an overview of the known and possible molecular players involved in the Ca2+ signalling of its different subcellular compartments. The advanced toolkits recently developed to measure time-resolved Ca2+ signalling in living C. reinhardtii cells are also discussed, suggesting how they can improve the study of the role of Ca2+ signals in the cellular response of microalgae to environmental stimuli.
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Affiliation(s)
- Matteo Pivato
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
| | - Matteo Ballottari
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
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8
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Santhanagopalan I, Wong R, Mathur T, Griffiths H. Orchestral manoeuvres in the light: crosstalk needed for regulation of the Chlamydomonas carbon concentration mechanism. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:4604-4624. [PMID: 33893473 PMCID: PMC8320531 DOI: 10.1093/jxb/erab169] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/19/2021] [Indexed: 05/19/2023]
Abstract
The inducible carbon concentration mechanism (CCM) in Chlamydomonas reinhardtii has been well defined from a molecular and ultrastructural perspective. Inorganic carbon transport proteins, and strategically located carbonic anhydrases deliver CO2 within the chloroplast pyrenoid matrix where Rubisco is packaged. However, there is little understanding of the fundamental signalling and sensing processes leading to CCM induction. While external CO2 limitation has been believed to be the primary cue, the coupling between energetic supply and inorganic carbon demand through regulatory feedback from light harvesting and photorespiration signals could provide the original CCM trigger. Key questions regarding the integration of these processes are addressed in this review. We consider how the chloroplast functions as a crucible for photosynthesis, importing and integrating nuclear-encoded components from the cytoplasm, and sending retrograde signals to the nucleus to regulate CCM induction. We hypothesize that induction of the CCM is associated with retrograde signals associated with photorespiration and/or light stress. We have also examined the significance of common evolutionary pressures for origins of two co-regulated processes, namely the CCM and photorespiration, in addition to identifying genes of interest involved in transcription, protein folding, and regulatory processes which are needed to fully understand the processes leading to CCM induction.
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Affiliation(s)
- Indu Santhanagopalan
- Department of Plant Sciences, Downing Street, University of Cambridge, Cambridge, UK
| | - Rachel Wong
- Department of Plant Sciences, Downing Street, University of Cambridge, Cambridge, UK
| | - Tanya Mathur
- Department of Plant Sciences, Downing Street, University of Cambridge, Cambridge, UK
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9
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Antonacci A, Bertalan I, Giardi MT, Scognamiglio V, Turemis M, Fisher D, Johanningmeier U. Enhancing resistance of Chlamydomonas reinhardtii to oxidative stress fusing constructs of heterologous antioxidant peptides into D1 protein. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Bouchnak I, van Wijk KJ. Structure, function, and substrates of Clp AAA+ protease systems in cyanobacteria, plastids, and apicoplasts: A comparative analysis. J Biol Chem 2021; 296:100338. [PMID: 33497624 PMCID: PMC7966870 DOI: 10.1016/j.jbc.2021.100338] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/22/2021] [Accepted: 01/22/2021] [Indexed: 02/08/2023] Open
Abstract
ATPases Associated with diverse cellular Activities (AAA+) are a superfamily of proteins that typically assemble into hexameric rings. These proteins contain AAA+ domains with two canonical motifs (Walker A and B) that bind and hydrolyze ATP, allowing them to perform a wide variety of different functions. For example, AAA+ proteins play a prominent role in cellular proteostasis by controlling biogenesis, folding, trafficking, and degradation of proteins present within the cell. Several central proteolytic systems (e.g., Clp, Deg, FtsH, Lon, 26S proteasome) use AAA+ domains or AAA+ proteins to unfold protein substrates (using energy from ATP hydrolysis) to make them accessible for degradation. This allows AAA+ protease systems to degrade aggregates and large proteins, as well as smaller proteins, and feed them as linearized molecules into a protease chamber. This review provides an up-to-date and a comparative overview of the essential Clp AAA+ protease systems in Cyanobacteria (e.g., Synechocystis spp), plastids of photosynthetic eukaryotes (e.g., Arabidopsis, Chlamydomonas), and apicoplasts in the nonphotosynthetic apicomplexan pathogen Plasmodium falciparum. Recent progress and breakthroughs in identifying Clp protease structures, substrates, substrate adaptors (e.g., NblA/B, ClpS, ClpF), and degrons are highlighted. We comment on the physiological importance of Clp activity, including plastid biogenesis, proteostasis, the chloroplast Protein Unfolding Response, and metabolism, across these diverse lineages. Outstanding questions as well as research opportunities and priorities to better understand the essential role of Clp systems in cellular proteostasis are discussed.
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Affiliation(s)
- Imen Bouchnak
- Section of Plant Biology, School of Integrative Plant Sciences (SIPS), Cornell University, Ithaca, New York, USA
| | - Klaas J van Wijk
- Section of Plant Biology, School of Integrative Plant Sciences (SIPS), Cornell University, Ithaca, New York, USA.
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Suastes-Rivas JK, Hernández-Altamirano R, Mena-Cervantes VY, Valdez-Ojeda R, Toledano-Thompson T, Tovar-Gálvez LR, López-Adrián S, Chairez I. Efficient production of fatty acid methyl esters by a wastewater-isolated microalgae-yeast co-culture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:28490-28499. [PMID: 31845266 DOI: 10.1007/s11356-019-07286-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Improving the competitiveness of biodiesel production by microalgae cultures requires the application of several strategies to obtain a high content of lipids, rapid biomass growth and a capacity to adapt to different kinds of environment, with the aim of using non-renewable nutrient sources. Therefore, the use of an individual indigenous microalgae strain or a consortium from natural or anthropogenic sites is now considered an alternative for biofuel production. This study examined the temporal behaviour of secondary metabolites produced by a native microalgae and yeast consortium isolated from wastewater, which was characterized by a genetic identification method based on the MiSeq system. The predominant species in the consortium was Scenedesmus obliquus, representing 68% of the organisms. In addition, the consortium contained a number of yeast species, including Candida pimensis (43%), Arthroderma vanbreuseghemii (23%), Diaporthe aspalathi/Diaporthe meridionalis (25%) and Hericium americanum (3%). This indigenous co-culture of microalgae and yeast showed biomass productivity of 0.06 g l-1 day-1, with a content of 30% (w/w) carbohydrates, 4% (w/w) proteins and 55% (w/w) lipids. Transesterification of the extracted lipids produced fatty acid methyl esters (FAMEs), which were analysed by gas chromatography (GC). The FAMEs included methyl pentadecanoate (1.90%), cis-10-pentanedecanoic acid methyl ester (1.36%), methyl palmitate (2.64%), methyl palmitoleate (21.36%), methyl oleate (64.95%), methyl linolenate (3.83%) and methyl linolelaidate (3.95%). This composition was relevant for biodiesel production based on the co-culture of indigenous microalgae and yeast consortia.
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Affiliation(s)
- Jessica K Suastes-Rivas
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico
| | - Raúl Hernández-Altamirano
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico.
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico.
| | - Violeta Y Mena-Cervantes
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico
| | - Ruby Valdez-Ojeda
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán A.C, Merida, Yucatán, Mexico
| | - Tanit Toledano-Thompson
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán A.C, Merida, Yucatán, Mexico
| | - Luis R Tovar-Gálvez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), 30 de junio de 1520 s/n, La Laguna Ticomán, 07340, Mexico City, Mexico
| | - Silvia López-Adrián
- Facultad de Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Merida, Yucatán, Mexico
| | - Isaac Chairez
- Departamento de Bioprocesos, Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Biotecnología, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
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Calcium Signaling and Gene Expression. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1131:537-545. [DOI: 10.1007/978-3-030-12457-1_22] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Antonacci A, Lambreva MD, Margonelli A, Sobolev AP, Pastorelli S, Bertalan I, Johanningmeier U, Sobolev V, Samish I, Edelman M, Havurinne V, Tyystjärvi E, Giardi MT, Mattoo AK, Rea G. Photosystem-II D1 protein mutants of Chlamydomonas reinhardtii in relation to metabolic rewiring and remodelling of H-bond network at Q B site. Sci Rep 2018; 8:14745. [PMID: 30283151 PMCID: PMC6170454 DOI: 10.1038/s41598-018-33146-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022] Open
Abstract
Photosystem II (PSII) reaction centre D1 protein of oxygenic phototrophs is pivotal for sustaining photosynthesis. Also, it is targeted by herbicides and herbicide-resistant weeds harbour single amino acid substitutions in D1. Conservation of D1 primary structure is seminal in the photosynthetic performance in many diverse species. In this study, we analysed built-in and environmentally-induced (high temperature and high photon fluency – HT/HL) phenotypes of two D1 mutants of Chlamydomonas reinhardtii with Ala250Arg (A250R) and Ser264Lys (S264K) substitutions. Both mutations differentially affected efficiency of electron transport and oxygen production. In addition, targeted metabolomics revealed that the mutants undergo specific differences in primary and secondary metabolism, namely, amino acids, organic acids, pigments, NAD, xanthophylls and carotenes. Levels of lutein, β-carotene and zeaxanthin were in sync with their corresponding gene transcripts in response to HT/HL stress treatment in the parental (IL) and A250R strains. D1 structure analysis indicated that, among other effects, remodelling of H-bond network at the QB site might underpin the observed phenotypes. Thus, the D1 protein, in addition to being pivotal for efficient photosynthesis, may have a moonlighting role in rewiring of specific metabolic pathways, possibly involving retrograde signalling.
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Affiliation(s)
- Amina Antonacci
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Maya D Lambreva
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Andrea Margonelli
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Anatoly P Sobolev
- Institute of Chemical Methodologies, National Research Council of Italy, Via Salaria km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Sandro Pastorelli
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy.,Neotron S.p.a., Santa Maria di Mugnano, Modena, Italy
| | - Ivo Bertalan
- Martin-Luther-University, Plant Physiology Institute, Weinbergweg 10, D-06120, Halle Saale, Germany
| | - Udo Johanningmeier
- Martin-Luther-University, Plant Physiology Institute, Weinbergweg 10, D-06120, Halle Saale, Germany
| | - Vladimir Sobolev
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Ilan Samish
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel.,Amai Proteins Ltd., 2 Bergman St., Rehovot, Israel
| | - Marvin Edelman
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Vesa Havurinne
- Department of Biochemistry/Molecular Plant Biology, FI-20014, University of Turku, Turku, Finland
| | - Esa Tyystjärvi
- Department of Biochemistry/Molecular Plant Biology, FI-20014, University of Turku, Turku, Finland
| | - Maria T Giardi
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy
| | - Autar K Mattoo
- The Henry A Wallace Beltsville Agricultural Research Centre, United States Department of Agriculture, Sustainable Agricultural Systems Laboratory, Beltsville, Maryland, 20705, USA.
| | - Giuseppina Rea
- Institute of Crystallography, National Research Council of Italy, Via Salaria Km 29,3 00015, Monterotondo Stazione, Rome, Italy.
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