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Serôdio J, Moreira D, Bastos A, Cardoso V, Frommlet J, Frankenbach S. Hysteresis light curves: a protocol for characterizing the time dependence of the light response of photosynthesis. PHOTOSYNTHESIS RESEARCH 2022; 154:57-74. [PMID: 36057004 DOI: 10.1007/s11120-022-00954-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Photosynthesis vs. light curves (LCs) have played a central role in photosynthesis research for decades. They are the commonest form of describing how photosynthesis responds to changes in light, being frequently used for characterizing photoacclimation. However, LCs are often interpreted exclusively regarding the response to light intensity, the effects of time of exposure not being explicitly considered. This study proposes the use of 'hysteresis light curves' (HLC), an experimental protocol focused on the cumulative effects of light exposure to obtain information on the time dependence of photosynthetic light responses. HLC are generated by exposing samples to a symmetrical sequence of increasing and decreasing light levels. The comparison of the light-increasing and the light-decreasing phases allows the quantification of the hysteresis caused by high-light exposure, the magnitude and direction of which inform on the activation, and subsequent relaxation of high-light-induced photosynthetic processes. HLCs of the chlorophyll fluorescence indices rETR (relative electron transport rate of photosystem II) and Y(NPQ) (index of non-photochemical quenching) were measured on cyanobacteria, algae, and plants, with the aim of identifying main patterns of hysteresis and their diversity. A non-parametric index is proposed to quantify the magnitude and direction of hysteresis in HLCs of rETR and Y(NPQ). The results of this study show that HLCs can provide additional relevant information on the time dependence of the light response of photosynthetic samples, not obtainable from conventional LCs, useful for phenotyping photosynthetic traits, including photoacclimation state and kinetics of light activation and relaxation of electron flow and energy dissipation processes.
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Affiliation(s)
- João Serôdio
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
| | - Daniel Moreira
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Alexandra Bastos
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Vera Cardoso
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Jörg Frommlet
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Silja Frankenbach
- Department of Biology and CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
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Pozzobon V, Perre P. Han’s model parameters for microalgae grown under intermittent illumination: Determined using particle swarm optimization. J Theor Biol 2018; 437:29-35. [DOI: 10.1016/j.jtbi.2017.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 10/04/2017] [Accepted: 10/09/2017] [Indexed: 10/18/2022]
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3
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Amato A, Dell'Aquila G, Musacchia F, Annunziata R, Ugarte A, Maillet N, Carbone A, Ribera d'Alcalà M, Sanges R, Iudicone D, Ferrante MI. Marine diatoms change their gene expression profile when exposed to microscale turbulence under nutrient replete conditions. Sci Rep 2017. [PMID: 28630429 PMCID: PMC5476593 DOI: 10.1038/s41598-017-03741-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Diatoms are a fundamental microalgal phylum that thrives in turbulent environments. Despite several experimental and numerical studies, if and how diatoms may profit from turbulence is still an open question. One of the leading arguments is that turbulence favours nutrient uptake. Morphological features, such as the absence of flagella, the presence of a rigid exoskeleton and the micrometre size would support the possible passive but beneficial role of turbulence on diatoms. We demonstrate that in fact diatoms actively respond to turbulence in non-limiting nutrient conditions. TURBOGEN, a prototypic instrument to generate natural levels of microscale turbulence, was used to expose diatoms to the mechanical stimulus. Differential expression analyses, coupled with microscopy inspections, enabled us to study the morphological and transcriptional response of Chaetoceros decipiens to turbulence. Our target species responds to turbulence by activating energy storage pathways like fatty acid biosynthesis and by modifying its cell chain spectrum. Two other ecologically important species were examined and the occurrence of a morphological response was confirmed. These results challenge the view of phytoplankton as unsophisticated passive organisms.
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Affiliation(s)
- Alberto Amato
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.,Laboratoire de Physiologie Cellulaire et Végétale, UMR5168 CNRS-CEA-INRA-Université de Grenoble Alpes, Institut de Recherche en Science et Technologies pour le Vivant, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cédex 9, France
| | - Gianluca Dell'Aquila
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.,Zellbiologie Philipps-Universität Marburg, Karl-von-Frisch Str, 8 35043, Marburg, Germany
| | - Francesco Musacchia
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.,Telethon Institute for Genetics and Medicine (TIGEM), Viale Campi Flegrei 34, 80078, Pozzuoli - Naples, Italy
| | | | - Ari Ugarte
- Sorbonne Universités, UPMC Univ-Paris 6, CNRS, UMR 7238, Laboratoire de Biologie Computationnelle et Quantitative, 15 rue de l'Ecole de Médecine, 75006, Paris, France
| | - Nicolas Maillet
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.,Institut Pasteur - Bioinformatics and Biostatistics Hub - C3BI - CNRS, USR 3756 25-28 Rue du Dr Roux, 75015, Paris, France
| | - Alessandra Carbone
- Sorbonne Universités, UPMC Univ-Paris 6, CNRS, UMR 7238, Laboratoire de Biologie Computationnelle et Quantitative, 15 rue de l'Ecole de Médecine, 75006, Paris, France.,Institut Universitaire de France, 75005, Paris, France
| | | | - Remo Sanges
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy
| | - Daniele Iudicone
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy
| | - Maria I Ferrante
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.
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4
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Modelling plankton ecosystems in the meta-omics era. Are we ready? Mar Genomics 2017; 32:1-17. [DOI: 10.1016/j.margen.2017.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 02/24/2017] [Accepted: 02/25/2017] [Indexed: 12/30/2022]
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5
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Olivieri G, Gargiulo L, Lettieri P, Mazzei L, Salatino P, Marzocchella A. Photobioreactors for microalgal cultures: A Lagrangian model coupling hydrodynamics and kinetics. Biotechnol Prog 2015; 31:1259-72. [PMID: 26148307 DOI: 10.1002/btpr.2138] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 03/16/2015] [Indexed: 11/07/2022]
Abstract
Closed photobioreactors have to be optimized in terms of light utilization and overall photosynthesis rate. A simple model coupling the hydrodynamics and the photosynthesis kinetics has been proposed to analyze the photosynthesis dynamics due to the continuous shuttle of microalgae between dark and lighted zones of the photobioreactor. Microalgal motion has been described according to a stochastic Lagrangian approach adopting the turbulence model suitable for the photobioreactor configuration (single vs. two-phase flows). Effects of light path, biomass concentration, turbulence level and irradiance have been reported in terms of overall photosynthesis rate. Different irradiation strategies (internal, lateral and rounding) and several photobioreactor configurations (flat, tubular, bubble column, airlift) have been investigated. Photobioreactor configurations and the operating conditions to maximize the photosynthesis rate have been pointed out. Results confirmed and explained the common experimental observation that high concentrated cultures are not photoinhibited at high irradiance level.
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Affiliation(s)
- Giuseppe Olivieri
- Bioprocess Engineering, AlgaePARC, Wageningen University, Droevendaalsesteeg 1, 6700AA, Wageningen, The Netherlands.,Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli "Federico II,", P.le V. Tecchio, 80, 80125, Napoli, Italy
| | - Luigi Gargiulo
- Dept. of Chemical Engineering, University College of London, Torrington Place, London, WC1E 7JE, U.K
| | - Paola Lettieri
- Dept. of Chemical Engineering, University College of London, Torrington Place, London, WC1E 7JE, U.K
| | - Luca Mazzei
- Dept. of Chemical Engineering, University College of London, Torrington Place, London, WC1E 7JE, U.K
| | - Piero Salatino
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli "Federico II,", P.le V. Tecchio, 80, 80125, Napoli, Italy
| | - Antonio Marzocchella
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli "Federico II,", P.le V. Tecchio, 80, 80125, Napoli, Italy
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Rogato A, Amato A, Iudicone D, Chiurazzi M, Ferrante MI, d'Alcalà MR. The diatom molecular toolkit to handle nitrogen uptake. Mar Genomics 2015; 24 Pt 1:95-108. [PMID: 26055207 DOI: 10.1016/j.margen.2015.05.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/26/2015] [Accepted: 05/26/2015] [Indexed: 11/16/2022]
Abstract
Nutrient concentrations in the oceans display significant temporal and spatial variability, which strongly affects growth, distribution and survival of phytoplankton. Nitrogen (N) in particular is often considered a limiting resource for prominent marine microalgae, such as diatoms. Diatoms possess a suite of N-related transporters and enzymes and utilize a variety of inorganic (e.g., nitrate, NO3(-); ammonium, NH4(+)) and organic (e.g., urea; amino acids) N sources for growth. However, the molecular mechanisms allowing diatoms to cope efficiently with N oscillations by controlling uptake capacities and signaling pathways involved in the perception of external and internal clues remain largely unknown. Data reported in the literature suggest that the regulation and the characteristic of the genes, and their products, involved in N metabolism are often diatom-specific, which correlates with the peculiar physiology of these organisms for what N utilization concerns. Our study reveals that diatoms host a larger suite of N transporters than one would expected for a unicellular organism, which may warrant flexible responses to variable conditions, possibly also correlated to the phases of life cycle of the cells. All this makes N transporters a crucial key to reveal the balance between proximate and ultimate factors in diatom life.
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Affiliation(s)
- Alessandra Rogato
- Institute of Biosciences and BioResources, CNR, Via P. Castellino 111, 80131 Naples, Italy.
| | - Alberto Amato
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale 1, 80121 Naples, Italy
| | - Daniele Iudicone
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale 1, 80121 Naples, Italy
| | - Maurizio Chiurazzi
- Institute of Biosciences and BioResources, CNR, Via P. Castellino 111, 80131 Naples, Italy
| | - Maria Immacolata Ferrante
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale 1, 80121 Naples, Italy.
| | - Maurizio Ribera d'Alcalà
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale 1, 80121 Naples, Italy
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7
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Modelling of Microalgae Culture Systems with Applications to Control and Optimization. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015; 153:59-87. [PMID: 25604163 DOI: 10.1007/10_2014_287] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mathematical modeling is becoming ever more important to assess the potential, guide the design, and enable the efficient operation and control of industrial-scale microalgae culture systems (MCS). The development of overall, inherently multiphysics, models involves coupling separate submodels of (i) the intrinsic biological properties, including growth, decay, and biosynthesis as well as the effect of light and temperature on these processes, and (ii) the physical properties, such as the hydrodynamics, light attenuation, and temperature in the culture medium. When considering high-density microalgae culture, in particular, the coupling between biology and physics becomes critical. This chapter reviews existing models, with a particular focus on the Droop model, which is a precursor model, and it highlights the structure common to many microalgae growth models. It summarizes the main developments and difficulties towards multiphysics models of MCS as well as applications of these models for monitoring, control, and optimization purposes.
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8
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Yanqing ZHANG, Guijun YANG, Boqiang QIN, Jian ZHOU, Huiping XU, Ying WANG, Yali WU. Effect of light intensity on growth of Microcystis flos-aquae colonies size. ACTA ACUST UNITED AC 2014. [DOI: 10.18307/2014.0410] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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9
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Béchet Q, Shilton A, Guieysse B. Modeling the effects of light and temperature on algae growth: State of the art and critical assessment for productivity prediction during outdoor cultivation. Biotechnol Adv 2013; 31:1648-63. [DOI: 10.1016/j.biotechadv.2013.08.014] [Citation(s) in RCA: 207] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 08/12/2013] [Accepted: 08/17/2013] [Indexed: 10/26/2022]
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10
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Depauw FA, Rogato A, Ribera d'Alcalá M, Falciatore A. Exploring the molecular basis of responses to light in marine diatoms. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:1575-91. [PMID: 22328904 DOI: 10.1093/jxb/ers005] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Light is an essential source of energy for life on Earth and is one of the most important signals that organisms use to obtain information from the surrounding environment, on land and in the oceans. Prominent marine microalgae, such as diatoms, display a suite of sophisticated responses (physiological, biochemical, and behavioural) to optimize their photosynthesis and growth under changing light conditions. However, the molecular mechanisms controlling diatom responses to light are still largely unknown. Recent progress in marine diatom genomics and genetics, combined with well-established (eco) physiological and biophysical approaches, now offers novel opportunities to address these issues. This review provides a description of the molecular components identified in diatom genomes that are involved in light perception and acclimation mechanisms. How the initial functional characterizations of specific light regulators provide the basis to investigate the conservation or diversification of light-mediated processes in diatoms is also discussed. Hypotheses on the role of the identified factors in determining the growth, distribution, and adaptation of diatoms in different marine environments are reported.
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Affiliation(s)
- Frauke Angelique Depauw
- Université Pierre et Marie Curie, Paris 06, Centre National de la Recherche Scientifique, UMR7238, Laboratoire de Génomique des Microorganismes, 75006 Paris, France
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