1
|
Ye Y, Liu M, Yu L, Sun H, Liu J. Nannochloropsis as an Emerging Algal Chassis for Light-Driven Synthesis of Lipids and High-Value Products. Mar Drugs 2024; 22:54. [PMID: 38393025 PMCID: PMC10890015 DOI: 10.3390/md22020054] [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: 12/23/2023] [Revised: 01/14/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
In light of the escalating global energy crisis, microalgae have emerged as highly promising producers of biofuel and high-value products. Among these microalgae, Nannochloropsis has received significant attention due to its capacity to generate not only triacylglycerol (TAG) but also eicosapentaenoic acid (EPA) and valuable carotenoids. Recent advancements in genetic tools and the field of synthetic biology have revolutionized Nannochloropsis into a powerful biofactory. This comprehensive review provides an initial overview of the current state of cultivation and utilization of the Nannochloropsis genus. Subsequently, our review examines the metabolic pathways governing lipids and carotenoids, emphasizing strategies to enhance oil production and optimize carbon flux redirection toward target products. Additionally, we summarize the utilization of advanced genetic manipulation techniques in Nannochloropsis. Together, the insights presented in this review highlight the immense potential of Nannochloropsis as a valuable model for biofuels and synthetic biology. By effectively integrating genetic tools and metabolic engineering, the realization of this potential becomes increasingly feasible.
Collapse
Affiliation(s)
- Ying Ye
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing 100871, China; (Y.Y.); (M.L.); (L.Y.)
| | - Meijing Liu
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing 100871, China; (Y.Y.); (M.L.); (L.Y.)
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Center for Algae Innovation & Engineering Research, School of Resources and Environment, Nanchang University, Nanchang 330031, China
| | - Lihua Yu
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing 100871, China; (Y.Y.); (M.L.); (L.Y.)
| | - Han Sun
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Jin Liu
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing 100871, China; (Y.Y.); (M.L.); (L.Y.)
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Center for Algae Innovation & Engineering Research, School of Resources and Environment, Nanchang University, Nanchang 330031, China
| |
Collapse
|
2
|
Short A, Fay TP, Crisanto T, Mangal R, Niyogi KK, Limmer DT, Fleming GR. Kinetics of the xanthophyll cycle and its role in photoprotective memory and response. Nat Commun 2023; 14:6621. [PMID: 37857617 PMCID: PMC10587229 DOI: 10.1038/s41467-023-42281-8] [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: 06/09/2023] [Accepted: 10/05/2023] [Indexed: 10/21/2023] Open
Abstract
Efficiently balancing photochemistry and photoprotection is crucial for survival and productivity of photosynthetic organisms in the rapidly fluctuating light levels found in natural environments. The ability to respond quickly to sudden changes in light level is clearly advantageous. In the alga Nannochloropsis oceanica we observed an ability to respond rapidly to sudden increases in light level which occur soon after a previous high-light exposure. This ability implies a kind of memory. In this work, we explore the xanthophyll cycle in N. oceanica as a short-term photoprotective memory system. By combining snapshot fluorescence lifetime measurements with a biochemistry-based quantitative model, we show that short-term memory arises from the xanthophyll cycle. In addition, the model enables us to characterize the relative quenching abilities of the three xanthophyll cycle components. Given the ubiquity of the xanthophyll cycle in photosynthetic organisms the model described here will be of utility in improving our understanding of vascular plant and algal photoprotection with important implications for crop productivity.
Collapse
Affiliation(s)
- Audrey Short
- Graduate Group in Biophysics, University of California, Berkeley, CA, 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Kavli Energy Nanoscience Institute, Berkeley, CA, 94720, USA
| | - Thomas P Fay
- Department of Chemistry, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Thien Crisanto
- Molecular Biophysics and Integrated Bioimaging Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, CA, 94720, USA
| | - Ratul Mangal
- Department of Chemistry, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Krishna K Niyogi
- Molecular Biophysics and Integrated Bioimaging Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, CA, 94720, USA
| | - David T Limmer
- Kavli Energy Nanoscience Institute, Berkeley, CA, 94720, USA
- Department of Chemistry, University of California Berkeley, Berkeley, CA, 94720, USA
- Chemical Science Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Material Science Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Graham R Fleming
- Graduate Group in Biophysics, University of California, Berkeley, CA, 94720, USA.
- Molecular Biophysics and Integrated Bioimaging Division Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
- Kavli Energy Nanoscience Institute, Berkeley, CA, 94720, USA.
- Department of Chemistry, University of California Berkeley, Berkeley, CA, 94720, USA.
| |
Collapse
|
3
|
Biswal S, Gupta PSS, Panda SK, Bhat HR, Rana MK. Insights into the binding mechanism of ascorbic acid and violaxanthin with violaxanthin de-epoxidase (VDE) and chlorophycean violaxanthin de-epoxidase (CVDE) enzymes. PHOTOSYNTHESIS RESEARCH 2023; 156:337-354. [PMID: 36847893 DOI: 10.1007/s11120-023-01006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 02/11/2023] [Indexed: 05/23/2023]
Abstract
Photosynthetic organisms have evolved to work under low and high lights in photoprotection, acting as a scavenger of reactive oxygen species. The light-dependent xanthophyll cycle involved in this process is performed by a key enzyme (present in the thylakoid lumen), Violaxanthin De-Epoxidase (VDE), in the presence of violaxanthin (Vio) and ascorbic acid substrates. Phylogenetically, VDE is found to be connected with an ancestral enzyme Chlorophycean Violaxanthin De-Epoxidase (CVDE), present in the green algae on the stromal side of the thylakoid membrane. However, the structure and functions of CVDE were not known. In search of functional similarities involving this cycle, the structure, binding conformation, stability, and interaction mechanism of CVDE are explored with the two substrates compared to VDE. The structure of CVDE was determined by homology modeling and validated. In silico docking (of first-principles optimized substrates) revealed it has a larger catalytic domain than VDE. A thorough analysis of the binding affinity and stability of four enzyme-substrate complexes is performed by computing free energies and their decomposition, the root-mean-square deviation (RMSD) and fluctuation (RMSF), the radius of gyration, salt bridge, and hydrogen bonding interactions in molecular dynamics. Based on these, violaxanthin interacts with CVDE to a similar extent as that of VDE. Hence, its role is expected to be the same for both enzymes. On the contrary, ascorbic acid has a weaker interaction with CVDE than VDE. Given these interactions drive epoxidation or de-epoxidation in the xanthophyll cycle, it immediately discerns that either ascorbic acid does not participate in de-epoxidation or a different cofactor is necessary as CVDE has a weaker interaction with ascorbic acid than VDE.
Collapse
Affiliation(s)
- Satyaranjan Biswal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur, Ganjam, Odisha, 760010, India
| | - Parth Sarthi Sen Gupta
- School of Biosciences and Bioengineering, D Y Patil International University, Akurdi, Pune, Maharashtra-411044, India
| | - Saroj Kumar Panda
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur, Ganjam, Odisha, 760010, India
| | - Haamid Rasool Bhat
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur, Ganjam, Odisha, 760010, India
| | - Malay Kumar Rana
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Berhampur, Ganjam, Odisha, 760010, India.
| |
Collapse
|
4
|
Liu M, Ding W, Pan Y, Hu H, Liu J. Zeaxanthin epoxidase is involved in the carotenoid biosynthesis and light-dependent growth of the marine alga Nannochloropsis oceanica. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:74. [PMID: 37138328 PMCID: PMC10157934 DOI: 10.1186/s13068-023-02326-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/24/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND The marine alga Nannochloropsis oceanica, an emerging model belonging to Heterokont, is considered as a promising light-driven eukaryotic chassis for transforming carbon dioxide to various compounds including carotenoids. Nevertheless, the carotenogenic genes and their roles in the alga remain less understood and to be further explored. RESULTS Here, two phylogenetically distant zeaxanthin epoxidase (ZEP) genes from N. oceanica (NoZEP1 and NoZEP2) were functionally characterized. Subcellular localization experiment demonstrated that both NoZEP1 and NoZEP2 reside in the chloroplast yet with differential distribution patterns. Overexpression of NoZEP1 or NoZEP2 led to increases of violaxanthin and its downstream carotenoids at the expense of zeaxanthin in N. oceanica, with the extent of changes mediated by NoZEP1 overexpression being greater as compared to NoZEP2 overexpression. Suppression of NoZEP1 or NoZEP2, on the other hand, caused decreases of violaxanthin and its downstream carotenoids as well as increases of zeaxanthin; similarly, the extent of changes mediated by NoZEP1 suppression was larger than that by NoZEP2 suppression. Interestingly, chlorophyll a dropped following violaxanthin decrease in a well-correlated manner in response to NoZEP suppression. The thylakoid membrane lipids including monogalactosyldiacylglycerol also correlated with the violaxanthin decreases. Accordingly, NoZEP1 suppression resulted in more attenuated algal growth than NoZEP2 suppression did under either normal light or high light stage. CONCLUSIONS The results together support that both NoZEP1 and NoZEP2, localized in the chloroplast, have overlapping roles in epoxidating zeaxanthin to violaxanthin for the light-dependent growth, yet with NoZEP1 being more functional than NoZEP2 in N. oceanica. Our study provides implications into the understanding of carotenoid biosynthesis and future manipulation of N. oceanica for carotenoid production.
Collapse
Affiliation(s)
- Meijing Liu
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing, 100871 China
| | - Wei Ding
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing, 100871 China
| | - Yufang Pan
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 China
| | - Hanhua Hu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 China
| | - Jin Liu
- Laboratory for Algae Biotechnology & Innovation, College of Engineering, Peking University, Beijing, 100871 China
| |
Collapse
|
5
|
Agostini A, Bína D, Carbonera D, Litvín R. Conservation of triplet-triplet energy transfer photoprotective pathways in fucoxanthin chlorophyll-binding proteins across algal lineages. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2023; 1864:148935. [PMID: 36379269 DOI: 10.1016/j.bbabio.2022.148935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/18/2022] [Accepted: 11/07/2022] [Indexed: 11/14/2022]
Abstract
Detailed information on the photo-generated triplet states of diatom and haptophyte Fucoxanthin Chlorophyll-binding Proteins (FCPs and E-FCPs, respectively) have been obtained from a combined spectroscopic investigation involving Transient Absorption and Time-Resolved Electron Paramagnetic Resonance. Pennate diatom Phaeodactylum tricornutum FCP shows identical photoprotective Triplet-Triplet Energy Transfer (TTET) pathways to the previously investigated centric diatom Cyclotella meneghiniana FCP, with the same two chlorophyll a-fucoxanthin pairs that involve the fucoxanthins in sites Fx301 and Fx302 contributing to TTET in both diatom groups. In the case of the haptophyte Emilianina huxleyi E-FCP, only one of the two chlorophyll a-fucoxanthins pairs observed in diatoms, the one involving chlorophyll a409 and Fx301, has been shown to be active in TTET. Furthermore, despite the marked change in the pigment content of E-FCP with growth light intensity, the TTET pathway is not affected. Thus, our comparative investigation of FCPs revealed a photoprotective TTET pathway shared within these classes involving the fucoxanthin in site Fx301, a site exposed to the exterior of the antenna monomer that has no equivalent in Light-Harvesting Complexes from the green lineage.
Collapse
Affiliation(s)
- Alessandro Agostini
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic.
| | - David Bína
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic; Institute of Chemistry, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05 České Budějovice, Czech Republic
| | - Donatella Carbonera
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Radek Litvín
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic; Institute of Chemistry, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05 České Budějovice, Czech Republic.
| |
Collapse
|
6
|
Lima S, Lokesh J, Schulze PSC, Wijffels RH, Kiron V, Scargiali F, Petters S, Bernstein HC, Morales-Sánchez D. Flashing lights affect the photophysiology and expression of carotenoid and lipid synthesis genes in Nannochloropsis gaditana. J Biotechnol 2022; 360:171-181. [PMID: 36417987 DOI: 10.1016/j.jbiotec.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/21/2022]
Abstract
Nannochloropsis gaditana is a promising microalga for biotechnology. One of the strategies to stimulate its full potential in metabolite production is exposure to flashing lights. Here, we report how N. gaditana adapts to different flashing light regimes (5, 50, and 500 Hz) by changing its cellular physiology and the relative expression of genes related to critical cellular functions. We analyzed the differential mRNA abundance of genes related to photosynthesis, nitrogen assimilation and biosynthesis of chlorophyll, carotenoids, lipids, fatty acids and starch. Analysis of photosynthetic efficiency and high mRNA abundance of photoprotection genes supported the inference that excess excitation energy provided by light absorbance during photosynthesis was produced under low frequency flashing lights and was dissipated by photopigments via the xanthophyll-cycle. Increased relative expression levels of genes related to the synthesis of carotenoids and chlorophyll confirmed the accumulation of photopigments previously observed at low frequency flashing lights. Higher differential mRNA abundance of genes related to the triacylglycerol biosynthesis were observed at lower frequency flashing lights, possibly triggered by a poor nitrogen assimilation caused by low mRNA abundance of a nitrate reductase gene. This study advances a new understanding of algal physiology and metabolism leading to improved cellular performance and metabolite production.
Collapse
Affiliation(s)
- Serena Lima
- Engineering Department, University of Palermo, Palermo, Italy
| | - Jep Lokesh
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway; INRAE E2S UPPA, NUMEA, Université de Pau et des Pays de l'Adour, Saint-Pée-sur-Nivelle, France
| | - Peter S C Schulze
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway; GreenColab - Associação Oceano Verde, University of Algarve, Faro, Portugal
| | - Rene H Wijffels
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway; Bioprocess Engineering, AlgaePARC, Wageningen University, Netherlands
| | - Viswanath Kiron
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | | | - Sebastian Petters
- The Norwegian College of Fisheries Sciences, Faculty of Biosciences, Fisheries and Economics, The Arctic University of Norway, Tromsø, Norway
| | - Hans C Bernstein
- The Norwegian College of Fisheries Sciences, Faculty of Biosciences, Fisheries and Economics, The Arctic University of Norway, Tromsø, Norway
| | - Daniela Morales-Sánchez
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway; The Norwegian College of Fisheries Sciences, Faculty of Biosciences, Fisheries and Economics, The Arctic University of Norway, Tromsø, Norway.
| |
Collapse
|
7
|
Liu M, Ding W, Yu L, Shi Y, Liu J. Functional characterization of carotenogenic genes provides implications into carotenoid biosynthesis and engineering in the marine alga Nannochloropsis oceanica. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
8
|
Short AH, Fay TP, Crisanto T, Hall J, Steen CJ, Niyogi KK, Limmer DT, Fleming GR. Xanthophyll-cycle based model of the rapid photoprotection of Nannochloropsis in response to regular and irregular light/dark sequences. J Chem Phys 2022; 156:205102. [DOI: 10.1063/5.0089335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract <p>We explore the photoprotection dynamics of Nannochloropsis oceanica using time-correlated single photon counting under regular and irregular actinic light sequences. The varying light sequences mimic natural conditions, allowing us to probe the real-time response of non-photochemical quenching (NPQ) pathways. Durations of fluctuating light exposure during a fixed total experimental time and prior light exposure of the algae are both found to have a profound effect on NPQ. These observations are rationalized with a quantitative model based on the xanthophyll cycle and the protonation of LHCX1. The model is able to accurately describe the dynamics of non-photochemical quenching across a variety of light sequences. The combined model and observations suggest that the accumulation of a quenching complex, likely zeaxanthin bound to a protonated LHCX1, is responsible for the gradual rise in NPQ. Additionally, the model makes specific predictions for the light sequence dependence of xanthophyll concentrations that are in reasonable agreement with independent chromatography measurements taken during a specific light/dark sequence.
Collapse
Affiliation(s)
- Audrey H Short
- University of California Berkeley, United States of America
| | - Thomas Patrick Fay
- Department of Chemistry, University of California Berkeley Department of Chemistry, United States of America
| | - Thien Crisanto
- University of California Berkeley, United States of America
| | - Johanna Hall
- Georgia Institute of Technology, United States of America
| | - Collin J Steen
- Chemistry, University of California Berkeley, United States of America
| | | | - David T Limmer
- Chemistry, University of California Berkeley Department of Chemistry, United States of America
| | - Graham R. Fleming
- Department of Chemistry, University of California Berkeley College of Chemistry, United States of America
| |
Collapse
|
9
|
Macernis M, Streckaite S, Litvin R, Pascal AA, Llansola-Portoles MJ, Robert B, Valkunas L. Electronic and Vibrational Properties of Allene Carotenoids. J Phys Chem A 2022; 126:813-824. [PMID: 35114087 PMCID: PMC8859822 DOI: 10.1021/acs.jpca.1c09393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Carotenoids are conjugated
linear molecules built from the repetition
of terpene units, which display a large structural diversity in nature.
They may, in particular, contain several types of side or end groups,
which tune their functional properties, such as absorption position
and photochemistry. We report here a detailed experimental study of
the absorption and vibrational properties of allene-containing carotenoids,
together with an extensive modeling of these experimental data. Our
calculations can satisfactorily explain the electronic properties
of vaucheriaxanthin, where the allene group introduces the equivalent
of one C=C double bond into the conjugated C=C chain.
The position of the electronic absorption of fucoxanthin and butanoyloxyfucoxanthin
requires long-range corrections to be found correctly on the red side
of that of vaucheriaxanthin; however, these corrections tend to overestimate
the effect of the conjugated and nonconjugated C=O groups in
these molecules. We show that the resonance Raman spectra of these
carotenoids are largely perturbed by the presence of the allene group,
with the two major Raman contributions split into two components.
These perturbations are satisfactorily explained by modeling, through
a gain in the Raman intensity of the C=C antisymmetric stretching
mode, induced by the presence of the allene group in the carotenoid
C=C chain.
Collapse
Affiliation(s)
- Mindaugas Macernis
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio Avenue 3, LT-10222 Vilnius, Lithuania
| | - Simona Streckaite
- Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Radek Litvin
- Biology Centre, Czech Academy of Sciences, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic.,Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05 Ceske Budejovice, Czech Republic
| | - Andrew A Pascal
- Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Manuel J Llansola-Portoles
- Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Bruno Robert
- Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Leonas Valkunas
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio Avenue 3, LT-10222 Vilnius, Lithuania.,Molecular Compounds Physics Department, Center for Physical Sciences and Technology, Sauletekio Avenue 3, LT-10257 Vilnius, Lithuania
| |
Collapse
|
10
|
Giovagnetti V, Ruban AV. The mechanism of regulation of photosystem I cross-section in the pennate diatom Phaeodactylum tricornutum. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:561-575. [PMID: 33068431 DOI: 10.1093/jxb/eraa478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Photosystems possess distinct fluorescence emissions at low (77K) temperature. PSI emits in the long-wavelength region at ~710-740 nm. In diatoms, a successful clade of marine primary producers, the contribution of PSI-associated emission (710-717 nm) has been shown to be relatively small. However, in the pennate diatom Phaeodactylum tricornutum, the source of the long-wavelength emission at ~710 nm (F710) remains controversial. Here, we addressed the origin and modulation of F710 fluorescence in this alga grown under continuous and intermittent light. The latter condition led to a strong enhancement in F710. Biochemical and spectral properties of the photosynthetic complexes isolated from thylakoid membranes were investigated for both culture conditions. F710 emission appeared to be associated with PSI regardless of light acclimation. To further assess whether PSII could also contribute to this emission, we decreased the concentration of PSII reaction centres and core antenna by growing cells with lincomycin, a chloroplast protein synthesis inhibitor. The treatment did not diminish F710 fluorescence. Our data suggest that F710 emission originates from PSI under the conditions tested and is enhanced in intermittent light-grown cells due to increased energy flow from the FCP antenna to PSI.
Collapse
Affiliation(s)
- Vasco Giovagnetti
- Department of Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Alexander V Ruban
- Department of Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| |
Collapse
|
11
|
Lu Y, Gan Q, Iwai M, Alboresi A, Burlacot A, Dautermann O, Takahashi H, Crisanto T, Peltier G, Morosinotto T, Melis A, Niyogi KK. Role of an ancient light-harvesting protein of PSI in light absorption and photoprotection. Nat Commun 2021; 12:679. [PMID: 33514722 PMCID: PMC7846763 DOI: 10.1038/s41467-021-20967-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/05/2021] [Indexed: 12/18/2022] Open
Abstract
Diverse algae of the red lineage possess chlorophyll a-binding proteins termed LHCR, comprising the PSI light-harvesting system, which represent an ancient antenna form that evolved in red algae and was acquired through secondary endosymbiosis. However, the function and regulation of LHCR complexes remain obscure. Here we describe isolation of a Nannochloropsis oceanica LHCR mutant, named hlr1, which exhibits a greater tolerance to high-light (HL) stress compared to the wild type. We show that increased tolerance to HL of the mutant can be attributed to alterations in PSI, making it less prone to ROS production, thereby limiting oxidative damage and favoring growth in HL. HLR1 deficiency attenuates PSI light-harvesting capacity and growth of the mutant under light-limiting conditions. We conclude that HLR1, a member of a conserved and broadly distributed clade of LHCR proteins, plays a pivotal role in a dynamic balancing act between photoprotection and efficient light harvesting for photosynthesis. LHCR proteins are ancient chlorophyll a-binding antennas that evolved in diverse algae of the red lineage. Here Lu et al. characterize a red lineage LHCR mutant and show reduced oxidative damage in high light but attenuated growth under low light, thus demonstrating how LHCR proteins impact the balance between photoprotection and light harvesting.
Collapse
Affiliation(s)
- Yandu Lu
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, Hainan, China. .,Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA.
| | - Qinhua Gan
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, Hainan, China
| | - Masakazu Iwai
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA.,Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | | | - Adrien Burlacot
- CEA, CNRS, Aix-Marseille Université, Institut de Biosciences et Biotechnologies Aix-Marseille, UMR 7265, Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, CEA Cadarache, Saint-Paul-lezDurance, France
| | - Oliver Dautermann
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Hiroko Takahashi
- Department of Biochemistry and Molecular Biology, Graduate school of Science and Engineering, Saitama University, Saitama, Japan
| | - Thien Crisanto
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Gilles Peltier
- CEA, CNRS, Aix-Marseille Université, Institut de Biosciences et Biotechnologies Aix-Marseille, UMR 7265, Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, CEA Cadarache, Saint-Paul-lezDurance, France
| | | | - Anastasios Melis
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Krishna K Niyogi
- Howard Hughes Medical Institute, Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA. .,Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| |
Collapse
|
12
|
Enhanced Light-Induced Biosynthesis of Fatty Acids Suitable for Biodiesel Production by the Yellow-Green Alga Eustigmatos magnus. ENERGIES 2020. [DOI: 10.3390/en13226098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Optimization of the fatty acid profile in microalgae is one of the key strategies for obtaining valuable products and sustainable biofuels. Light intensity and light regimes exert an impact on the growth and metabolic process in microalgae. The objective of the present investigations was to assess the effect of light intensity and continuous light vs. photoperiod conditions on the growth and changes in the biomass composition in Eustigmatos magnus, with a focus on bioactive molecules such as lipids and fatty acids. The highest daily productivity of Eustigmatos magnus biomass and lipid yields were detected at continuous illumination and at the highest intensity of light. The results show that the content and composition of fatty acids was influenced by the culture conditions. The biomass of Eustigmatos magnus contained the highest concentrations of polyunsaturated fatty acids in the pphotoperiod conditions with the highest light intensity. This study shows that Eustigmatos magnus has a capacity for the accumulation of palmitoleic acid. A high intensity of continuous light improves the profile of fatty acids in Eustigmatos magnus, which can be suitable for biodiesel applications. At the high intensity of continuous light, Eustigmatos magnus lipids are characterized by high content of oleic acids and low content of saturated and monounsaturated acids.
Collapse
|
13
|
Wei L, You W, Gong Y, El Hajjami M, Liang W, Xu J, Poetsch A. Transcriptomic and proteomic choreography in response to light quality variation reveals key adaption mechanisms in marine Nannochloropsis oceanica. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 720:137667. [PMID: 32325597 DOI: 10.1016/j.scitotenv.2020.137667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/04/2020] [Accepted: 02/29/2020] [Indexed: 06/11/2023]
Abstract
Photosynthetic organisms need to respond frequently to the fluctuation of light quality and light quantity in their habitat. In response to the fluctuation of different single wavelength lights, these organisms have to adjust and optimize the employment of light energy by redistributing excitation energy and remodeling photosystem stoichiometry or light complex structure. However, the response of whole cellular processes to fluctuations in single wavelength light is mostly unknown. Here, we report the transcriptomic and proteomic dynamics and metabolic adaptation mechanisms of Nannochloropsis oceanica to blue and red light. Preferential exposure to different light spectra induces massive reprogramming of the Nannochloropsis transcriptome and proteome. Combined with physiological and biochemical investigation, the rewiring of many cellular processes was observed, including carbon/nitrogen assimilation, photosynthesis, chlorophyll and cartenoid biosynthesis, reactive oxygen species (ROS) scavenging systems, and chromatin state regulation. A strong and rapid regulation of genes or proteins related to nitrogen metabolism, photosynthesis, chlorophyll synthesis, ROS scavenging system, and carotenoid metabolism were observed during 12 h and 24 h of exposure under red light. Additionally, two light harvesting complex proteins induced by blue light and one by red light were observed. The differential responses of N. oceanica to red and blue irradiation reveal how marine microalgae adapt to change in light quality and can be exploited for biofuel feedstock development.
Collapse
Affiliation(s)
- Li Wei
- Single-Cell Center, CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Wuxin You
- Single-Cell Center, CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China; Department of Plant Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Yanhai Gong
- Single-Cell Center, CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China
| | - Mohamed El Hajjami
- Department of Plant Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Wensi Liang
- Single-Cell Center, CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Xu
- Single-Cell Center, CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Ansgar Poetsch
- Department of Plant Biochemistry, Ruhr University Bochum, Bochum, Germany; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| |
Collapse
|
14
|
Staleva-Musto H, Kuznetsova V, Bína D, Litvín R, Polívka T. Intramolecular charge-transfer state of carotenoids siphonaxanthin and siphonein: function of non-conjugated acyl-oxy group. PHOTOSYNTHESIS RESEARCH 2020; 144:127-135. [PMID: 31802367 DOI: 10.1007/s11120-019-00694-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
We used ultrafast transient absorption spectroscopy to study excited-state dynamics of two keto-carotenoids, siphonaxanthin and siphonein. These two carotenoids differ in the presence of dodecanoyl-oxy group in siphonein, which is attached to the C19 carbon on the same side of the molecule as the conjugated keto group. We show that this dodecanoyl-oxy group, though not in conjugation, is still capable of modifying excited state properties. While spectroscopic properties of siphonein and siphonaxanthin are nearly identical in a non-polar solvent, they become markedly different in polar solvents. In a polar solvent, siphonein, having the dodecanoyl-oxy moiety, exhibits less pronounced vibrational bands in the absorption spectrum and has significantly enhanced characteristic features of an intramolecular charge-transfer (ICT) state in transient absorption spectra compared to siphonaxanthin. The presence of the dodecanoyl-oxy moiety also alters the lifetimes of the S1/ICT state. For siphonaxanthin, the lifetimes are 60, 20, and 14 ps in n-hexane, acetonitrile, and methanol, whereas for siphonein these lifetimes yield 60, 11, and 10 ps. Thus, we show that even a non-conjugated functional group can affect the charge-transfer character of the S1/ICT state. By comparison with fucoxanthin acyl-oxy derivatives, we show that position of the acyl-oxy group in respect to the conjugated keto group is the key feature determining whether the polarity-dependent behavior is enhanced or suppressed.
Collapse
Affiliation(s)
- Hristina Staleva-Musto
- Institute of Physics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Valentyna Kuznetsova
- Institute of Physics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - David Bína
- Institute of Chemistry, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budějovice, Czech Republic
| | - Radek Litvín
- Institute of Chemistry, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budějovice, Czech Republic
| | - Tomáš Polívka
- Institute of Physics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budějovice, Czech Republic.
| |
Collapse
|
15
|
Adamec F, Farci D, Bína D, Litvín R, Khan T, Fuciman M, Piano D, Polívka T. Photophysics of deinoxanthin, the keto-carotenoid bound to the main S-layer unit of Deinococcus radiodurans. Photochem Photobiol Sci 2020; 19:495-503. [DOI: 10.1039/d0pp00031k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An ultrafast transient absorption experiment on the SDBC, which binds the carotenoid deinoxanthin, reveals a non-specific binding site that loosely binds the carotenoid, but protects the carotenoid from the outer environment.
Collapse
Affiliation(s)
- František Adamec
- Institute of Physics
- Faculty of Science
- University of South Bohemia
- České Budějovice
- Czech Republic
| | - Domenica Farci
- Department of Plant Physiology
- Warsaw University of Life Sciences - SGGW
- Warsaw
- Poland
| | - David Bína
- Institute of Chemistry
- Faculty of Science
- University of South Bohemia
- Czech Republic
- Biology Centre
| | - Radek Litvín
- Institute of Chemistry
- Faculty of Science
- University of South Bohemia
- Czech Republic
- Biology Centre
| | - Tuhin Khan
- Institute of Physics
- Faculty of Science
- University of South Bohemia
- České Budějovice
- Czech Republic
| | - Marcel Fuciman
- Institute of Physics
- Faculty of Science
- University of South Bohemia
- České Budějovice
- Czech Republic
| | - Dario Piano
- Department of Plant Physiology
- Warsaw University of Life Sciences - SGGW
- Warsaw
- Poland
- Laboratory of Photobiology and Plant Physiology
| | - Tomáš Polívka
- Institute of Physics
- Faculty of Science
- University of South Bohemia
- České Budějovice
- Czech Republic
| |
Collapse
|
16
|
Wolf BM, Blankenship RE. Far-red light acclimation in diverse oxygenic photosynthetic organisms. PHOTOSYNTHESIS RESEARCH 2019; 142:349-359. [PMID: 31222688 DOI: 10.1007/s11120-019-00653-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
Oxygenic photosynthesis has historically been considered limited to be driven by the wavelengths of visible light. However, in the last few decades, various adaptations have been discovered that allow algae, cyanobacteria, and even plants to utilize longer wavelength light in the far-red spectral range. These adaptations provide distinct advantages to the species possessing them, allowing the effective utilization of shade light under highly filtered light environments. In prokaryotes, these adaptations include the production of far-red-absorbing chlorophylls d and f and the remodeling of phycobilisome antennas and reaction centers. Eukaryotes express specialized light-harvesting pigment-protein complexes that use interactions between pigments and their protein environment to spectrally tune the absorption of chlorophyll a. If these adaptations could be applied to crop plants, a potentially significant increase in photon utilization in lower shaded leaves could be realized, improving crop yields.
Collapse
Affiliation(s)
- Benjamin M Wolf
- Department of Biology, Washington University in St. Louis, St. Louis, MO, 63130, USA.
| | - Robert E Blankenship
- Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO, 63130, USA
| |
Collapse
|
17
|
Litvín R, Bína D, Herbstová M, Pazderník M, Kotabová E, Gardian Z, Trtílek M, Prášil O, Vácha F. Red-shifted light-harvesting system of freshwater eukaryotic alga Trachydiscus minutus (Eustigmatophyta, Stramenopila). PHOTOSYNTHESIS RESEARCH 2019; 142:137-151. [PMID: 31375979 DOI: 10.1007/s11120-019-00662-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Survival of phototrophic organisms depends on their ability to collect and convert enough light energy to support their metabolism. Phototrophs can extend their absorption cross section by using diverse pigments and by tuning the properties of these pigments via pigment-pigment and pigment-protein interaction. It is well known that some cyanobacteria can grow in heavily shaded habitats by utilizing far-red light harvested with far-red-absorbing chlorophylls d and f. We describe a red-shifted light-harvesting system based on chlorophyll a from a freshwater eustigmatophyte alga Trachydiscus minutus (Eustigmatophyceae, Goniochloridales). A comprehensive characterization of the photosynthetic apparatus of T. minutus is presented. We show that thylakoid membranes of T. minutus contain light-harvesting complexes of several sizes differing in the relative amount of far-red chlorophyll a forms absorbing around 700 nm. The pigment arrangement of the major red-shifted light-harvesting complex is similar to that of the red-shifted antenna of a marine alveolate alga Chromera velia. Evolutionary aspects of the algal far-red light-harvesting complexes are discussed. The presence of these antennas in eustigmatophyte algae opens up new ways to modify organisms of this promising group for effective use of far-red light in mass cultures.
Collapse
Affiliation(s)
- Radek Litvín
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Biology Centre, The Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
| | - David Bína
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
- Biology Centre, The Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic.
| | - Miroslava Herbstová
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Biology Centre, The Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
| | - Marek Pazderník
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Institute of Microbiology, The Czech Academy of Sciences, Opatovický mlýn, 379 81, Třeboň, Czech Republic
| | - Eva Kotabová
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Institute of Microbiology, The Czech Academy of Sciences, Opatovický mlýn, 379 81, Třeboň, Czech Republic
| | - Zdenko Gardian
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Biology Centre, The Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
| | - Martin Trtílek
- PSI (Photon Systems Instruments), spol. s r.o. Drásov 470, 664 24, Drásov, Czech Republic
| | - Ondřej Prášil
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Institute of Microbiology, The Czech Academy of Sciences, Opatovický mlýn, 379 81, Třeboň, Czech Republic
| | - František Vácha
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
- Biology Centre, The Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
| |
Collapse
|
18
|
Niedzwiedzki DM, Wolf BM, Blankenship RE. Excitation energy transfer in the far-red absorbing violaxanthin/vaucheriaxanthin chlorophyll a complex from the eustigmatophyte alga FP5. PHOTOSYNTHESIS RESEARCH 2019; 140:337-354. [PMID: 30701484 DOI: 10.1007/s11120-019-00615-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
This work highlights spectroscopic investigations on a new representative of photosynthetic antenna complexes in the LHC family, a putative violaxanthin/vaucheriaxanthin chlorophyll a (VCP) antenna complex from a freshwater Eustigmatophyte alga FP5. A representative VCP-like complex, named as VCP-B3 was studied with both static and time-resolved spectroscopies with the aim of obtaining a deeper understanding of excitation energy migration within the pigment array of the complex. Compared to other VCP representatives, the absorption spectrum of the VCP-B3 is strongly altered in the range of the chlorophyll a Qy band, and is substantially red-shifted with the longest wavelength absorption band at 707 nm at 77 K. VCP-B3 shows a moderate xanthophyll-to-chlorophyll a efficiency of excitation energy transfer in the 50-60% range, 20-30% lower from comparable VCP complexes from other organisms. Transient absorption studies accompanied by detailed data fitting and simulations support the idea that the xanthophylls that occupy the central part of the complex, complementary to luteins in the LHCII, are violaxanthins. Target analysis suggests that the primary route of xanthophyll-to-chlorophyll a energy transfer occurs via the xanthophyll S1 state.
Collapse
Affiliation(s)
- Dariusz M Niedzwiedzki
- Department of Energy, Environmental & Chemical Engineering and Center for Solar Energy and Energy Storage, Washington University in St Louis, St. Louis, MO, 63130, USA.
- Photosynthetic Antenna Research Center, Washington University in St Louis, St. Louis, MO, 63130, USA.
| | - Benjamin M Wolf
- Department of Biology, Washington University in St Louis, St. Louis, MO, 63130, USA
| | - Robert E Blankenship
- Department of Biology, Washington University in St Louis, St. Louis, MO, 63130, USA
- Department of Chemistry, Washington University in St Louis, St. Louis, MO, 63130, USA
| |
Collapse
|
19
|
Büchel C. Light harvesting complexes in chlorophyll c-containing algae. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1861:148027. [PMID: 31153887 DOI: 10.1016/j.bbabio.2019.05.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 12/30/2022]
Abstract
Besides the so-called 'green lineage' of eukaryotic photosynthetic organisms that include vascular plants, a huge variety of different algal groups exist that also harvest light by means of membrane intrinsic light harvesting proteins (Lhc). The main taxa of these algae are the Cryptophytes, Haptophytes, Dinophytes, Chromeridae and the Heterokonts, the latter including diatoms, brown algae, Xanthophyceae and Eustigmatophyceae amongst others. Despite the similarity in Lhc proteins between vascular plants and these algae, pigmentation is significantly different since no Chl b is bound, but often replaced by Chl c, and a large diversity in carotenoids functioning in light harvesting and/or photoprotection is present. Due to the presence of Chl c in most of the taxa the name 'Chl c-containing organisms' has become common, however, Chl b-less is more precise since some harbour Lhc proteins that only bind one type of Chl, Chl a. In recent years huge progress has been made about the occurrence and function of Lhc in diatoms, so-called fucoxanthin chlorophyll proteins (FCP), where also the first molecular structure became available recently. In addition, especially energy transfer amongst the unusual pigments bound was intensively studied in many of these groups. This review summarises the present knowledge about the molecular structure, the arrangement of the different Lhc in complexes, the excitation energy transfer abilities and the involvement in photoprotection of the different Lhc systems in the so-called Chl c-containing organisms. This article is part of a Special Issue entitled Light harvesting, edited by Dr. Roberta Croce.
Collapse
Affiliation(s)
- Claudia Büchel
- Institute of Molecular Biosciences, Goethe University Frankfurt, Max-von-Laue Straße 9, 60438 Frankfurt, Germany.
| |
Collapse
|
20
|
Bennett DIG, Amarnath K, Park S, Steen CJ, Morris JM, Fleming GR. Models and mechanisms of the rapidly reversible regulation of photosynthetic light harvesting. Open Biol 2019; 9:190043. [PMID: 30966997 PMCID: PMC6501642 DOI: 10.1098/rsob.190043] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/07/2019] [Indexed: 02/02/2023] Open
Abstract
The rapid response of photosynthetic organisms to fluctuations in ambient light intensity is incompletely understood at both the molecular and membrane levels. In this review, we describe research from our group over a 10-year period aimed at identifying the photophysical mechanisms used by plants, algae and mosses to control the efficiency of light harvesting by photosystem II on the seconds-to-minutes time scale. To complement the spectroscopic data, we describe three models capable of describing the measured response at a quantitative level. The review attempts to provide an integrated view that has emerged from our work, and briefly looks forward to future experimental and modelling efforts that will refine and expand our understanding of a process that significantly influences crop yields.
Collapse
Affiliation(s)
- Doran I. G. Bennett
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Kapil Amarnath
- Department of Physics, University of California San Diego, La Jolla, CA 92093, USA
| | - Soomin Park
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Labs, Berkeley, CA 94720, USA
| | - Collin J. Steen
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Labs, Berkeley, CA 94720, USA
| | - Jonathan M. Morris
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Labs, Berkeley, CA 94720, USA
| | - Graham R. Fleming
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Labs, Berkeley, CA 94720, USA
| |
Collapse
|
21
|
Chlorophyll-carotenoid excitation energy transfer and charge transfer in Nannochloropsis oceanica for the regulation of photosynthesis. Proc Natl Acad Sci U S A 2019; 116:3385-3390. [PMID: 30808735 DOI: 10.1073/pnas.1819011116] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nonphotochemical quenching (NPQ) is a proxy for photoprotective thermal dissipation processes that regulate photosynthetic light harvesting. The identification of NPQ mechanisms and their molecular or physiological triggering factors under in vivo conditions is a matter of controversy. Here, to investigate chlorophyll (Chl)-zeaxanthin (Zea) excitation energy transfer (EET) and charge transfer (CT) as possible NPQ mechanisms, we performed transient absorption (TA) spectroscopy on live cells of the microalga Nannochloropsis oceanica We obtained evidence for the operation of both EET and CT quenching by observing spectral features associated with the Zea S1 and Zea●+ excited-state absorption (ESA) signals, respectively, after Chl excitation. Knockout mutants for genes encoding either violaxanthin de-epoxidase or LHCX1 proteins exhibited strongly inhibited NPQ capabilities and lacked detectable Zea S1 and Zea●+ ESA signals in vivo, which strongly suggests that the accumulation of Zea and active LHCX1 is essential for both EET and CT quenching in N. oceanica.
Collapse
|
22
|
Energy transfer dynamics in a red-shifted violaxanthin-chlorophyll a light-harvesting complex. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1860:111-120. [DOI: 10.1016/j.bbabio.2018.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/15/2018] [Accepted: 11/07/2018] [Indexed: 11/21/2022]
|
23
|
Unique photosynthetic electron transport tuning and excitation distribution in heterokont algae. PLoS One 2019; 14:e0209920. [PMID: 30625205 PMCID: PMC6326504 DOI: 10.1371/journal.pone.0209920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 12/13/2018] [Indexed: 01/01/2023] Open
Abstract
Heterokont algae are significant contributors to marine primary productivity. These algae have a photosynthetic machinery that shares many common features with that of Viridiplantae (green algae and land plants). Here we demonstrate, however, that the photosynthetic machinery of heterokont algae responds to light fundamentally differently than that of Viridiplantae. While exposure to high light leads to electron accumulation within the photosynthetic electron transport chain in Viridiplantae, this is not the case in heterokont algae. We use this insight to manipulate the photosynthetic electron transport chain and demonstrate that heterokont algae can dynamically distribute excitation energy between the two types of photosystems. We suggest that the reported electron transport and excitation distribution features are adaptations to the marine light environment.
Collapse
|
24
|
Streckaite S, Gardian Z, Li F, Pascal AA, Litvin R, Robert B, Llansola-Portoles MJ. Pigment configuration in the light-harvesting protein of the xanthophyte alga Xanthonema debile. PHOTOSYNTHESIS RESEARCH 2018; 138:139-148. [PMID: 30006883 DOI: 10.1007/s11120-018-0557-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
The soil chromophyte alga Xanthonema (X.) debile contains only non-carbonyl carotenoids and Chl-a. X. debile has an antenna system denoted Xanthophyte light-harvesting complex (XLH) that contains the carotenoids diadinoxanthin, heteroxanthin, and vaucheriaxanthin. The XLH pigment stoichiometry was calculated by chromatographic techniques and the pigment-binding structure studied by resonance Raman spectroscopy. The pigment ratio obtained by HPLC was found to be close to 8:1:2:1 Chl-a:heteroxanthin:diadinoxanthin:vaucheriaxanthin. The resonance Raman spectra suggest the presence of 8-10 Chl-a, all of which are 5-coordinated to the central Mg, with 1-3 Chl-a possessing a macrocycle distorted from the relaxed conformation. The three populations of carotenoids are in the all-trans configuration. Vaucheriaxanthin absorbs around 500-530 nm, diadinoxanthin at 494 nm and heteroxanthin at 487 nm at 4.5 K. The effective conjugation length of heteroxanthin and diadinoxanthin has been determined as 9.4 in both cases; the environment polarizability of the heteroxanthin and diadinoxanthin binding pockets is 0.270 and 0.305, respectively.
Collapse
Affiliation(s)
- Simona Streckaite
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Zdenko Gardian
- Biology Centre, Czech Academy of Sciences, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05, Ceske Budejovice, Czech Republic
| | - Fei Li
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, People's Republic of China
| | - Andrew A Pascal
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Radek Litvin
- Biology Centre, Czech Academy of Sciences, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05, Ceske Budejovice, Czech Republic
| | - Bruno Robert
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Manuel J Llansola-Portoles
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France.
| |
Collapse
|
25
|
Umetani I, Kunugi M, Yokono M, Takabayashi A, Tanaka A. Evidence of the supercomplex organization of photosystem II and light-harvesting complexes in Nannochloropsis granulata. PHOTOSYNTHESIS RESEARCH 2018; 136:49-61. [PMID: 28856533 DOI: 10.1007/s11120-017-0438-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/27/2017] [Indexed: 06/07/2023]
Abstract
Diverse light-harvesting complexes (LHCs) have been found in photosynthetic microalgae that originated from secondary endosymbiosis involving primary red algae. However, the associations between LHCs and photosystem I (PSI) and photosystem II (PSII) in these microalgae are not fully understood. Eustigmatophyta is a red algal lineage that appears to have a unique organization in its photosynthetic machinery, consisting of only chlorophyll a and carotenoids that are atypical compared with other closely related groups. In this study, the supramolecular organization of pigment-protein complexes in the eustigmatophyte alga, Nannochloropsis granulata was investigated using Clear Native (CN) PAGE coupled with two-dimensional (2D) SDS-PAGE. Our results showed two slowly migrating green bands that corresponded to PSII supercomplexes, which consisted of reaction centers and LHCs. These green bands were also characterized as PSII complexes by their low temperature fluorescence emission spectra. The protein subunits of the PSII-LHC resolved by 2D CN/SDS-PAGE were analyzed by mass spectrometry, and four different LHC proteins were identified. Phylogenetic analysis of the identified LHC protein sequences revealed that they belonged to four different Lhc groups; (1) stress-related Lhcx proteins, (2) fucoxanthin chlorophyll a/c-binding Lhcf proteins, (3) red-shifted Chromera light-harvesting proteins (Red-CLH), and (4) Lhcr proteins, which are commonly found in organisms possessing red algal plastids. This is the first report showing evidence of a pigment-protein supercomplex consisting of PSII and LHCs, and to identify PSII-associated LHC proteins in Nannochloropsis.
Collapse
Affiliation(s)
- Ikumi Umetani
- Institute of Low Temperature Science, Hokkaido University, N19 W8 Kita-Ku, Sapporo, 060-0819, Japan
- Department of Natural Sciences and Environmental Health, University College of Southeast Norway, Gullbringvegen 36, 3880, Bø, Norway
| | - Motoshi Kunugi
- Institute of Low Temperature Science, Hokkaido University, N19 W8 Kita-Ku, Sapporo, 060-0819, Japan
| | - Makio Yokono
- Institute of Low Temperature Science, Hokkaido University, N19 W8 Kita-Ku, Sapporo, 060-0819, Japan
| | - Atsushi Takabayashi
- Institute of Low Temperature Science, Hokkaido University, N19 W8 Kita-Ku, Sapporo, 060-0819, Japan.
| | - Ayumi Tanaka
- Institute of Low Temperature Science, Hokkaido University, N19 W8 Kita-Ku, Sapporo, 060-0819, Japan
| |
Collapse
|
26
|
Staleva-Musto H, Kuznetsova V, West RG, Keşan G, Minofar B, Fuciman M, Bína D, Litvín R, Polívka T. Nonconjugated Acyloxy Group Deactivates the Intramolecular Charge-Transfer State in the Carotenoid Fucoxanthin. J Phys Chem B 2018; 122:2922-2930. [PMID: 29469573 DOI: 10.1021/acs.jpcb.8b00743] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We used ultrafast transient absorption spectroscopy to study excited-state dynamics of the keto-carotenoid fucoxanthin (Fx) and its two derivatives: 19'-butanoyloxyfucoxanthin (bFx) and 19'-hexanoyloxyfucoxanthin (hFx). These derivatives occur in some light-harvesting systems of photosynthetic microorganisms, and their presence is typically related to stress conditions. Even though the hexanoyl (butanoyl) moiety is not a part of the conjugated system of hFx (bFx), their absorption spectra in polar solvents exhibit more pronounced vibrational bands of the S2 state than for Fx. The effect of the nonconjugated acyloxy moiety is further observed in transient absorption spectra, which for Fx exhibit characteristic features of an intramolecular charge transfer (ICT) state in all polar solvents. For bFx and hFx, however, much weaker ICT features are detected in methanol, and the spectral markers of the ICT state disappear completely in polar, but aprotic acetonitrile. The presence of the acyloxy moiety also alters the lifetimes of the S1/ICT state. For Fx, the lifetimes are 60, 30, and 20 ps in n-hexane, acetonitrile, and methanol, whereas for bFx and hFx, these lifetimes yield 60, 60, and 40 ps, respectively. Testing the S1/ICT state lifetimes of hFx in other solvents revealed that some ICT features can be induced only in polar, protic solvents (methanol, ethanol, and ethylene glycol). Thus, bFx and hFx represent a rather rare example of a system in which a nonconjugated functional group significantly alters excited-state dynamics. By comparison with other carotenoids, we show that a keto group at the acyloxy tail, even though it is not in conjugation, affects the electron distribution along the conjugated backbone, resulting in the observed decrease of the ICT character of the S1/ICT state of bFx and hFx.
Collapse
Affiliation(s)
- Hristina Staleva-Musto
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic
| | - Valentyna Kuznetsova
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic
| | - Robert G West
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic
| | - Gürkan Keşan
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic.,Department of Chemistry, Faculty of Science , Gebze Technical University , 41400 Gebze , Kocaeli , Turkey
| | - Babak Minofar
- Center for Nanobiology and Structural Biology, Institute of Microbiology , Czech Academy of Sciences , CZ 373 33 Nové Hrady , Czech Republic
| | - Marcel Fuciman
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic
| | - David Bína
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic.,Institute of Plant Molecular Biology, Biological Centre , Czech Academy of Sciences , CZ 370 05 České Budějovice , Czech Republic
| | - Radek Litvín
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic.,Institute of Plant Molecular Biology, Biological Centre , Czech Academy of Sciences , CZ 370 05 České Budějovice , Czech Republic
| | - Tomáš Polívka
- Institute of Physics and Biophysics, Faculty of Science , University of South Bohemia , Branišovská 1760 , CZ 370 05 České Budějovice , Czech Republic.,Institute of Plant Molecular Biology, Biological Centre , Czech Academy of Sciences , CZ 370 05 České Budějovice , Czech Republic
| |
Collapse
|
27
|
Sung MG, Han JI, Lee B, Chang YK. Wavelength shift strategy to enhance lipid productivity of Nannochloropsis gaditana. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:70. [PMID: 29560025 PMCID: PMC5858150 DOI: 10.1186/s13068-018-1067-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Microalgae, being a phototroph, grow in the presence of light, and utilizing photons in narrow and specific range of wavelengths. There have been numerous attempts to take advantage of this trait of wavelength-dependent growth for the purpose of increasing biomass productivity. One potential option involves wavelength conversion of sunlight. In the present study, three fluorescent dyes with blue, red, and green emission spectra were employed with the aim of improving sunlight utilization efficiency and thus enhancing biomass and lipid productivity of Nannochloropsis gaditana. RESULTS When DPA and R101 were used to enrich blue and red spectra, biomass productivity of Nannochloropsis gaditana was increased by 35.1 and 40.3%, respectively. The maximum quantum yield values were higher than 0.6 at the early stage of growth for the cultures grown under DPA- and R101-modified solar radiation. Chlorophyll a content was also 57.0 and 32.3% higher than the control at the early growth stage under DPA- and R101-modified solar radiation, respectively. This stimulation of photosynthetic activity at the early growth stage correlated well with rapid growth under DPA- and R101-modified light during the first 4 days of cultivation. Lipid productivity consequently increased by 26.9 (DPA) and 39.4% (R101) after 10 days of cultivation. An immediate effect on lipid induction was observed in cultures under modified light, which exhibited 19.1% improvement in lipid content at the cost of some degree of impaired growth. CONCLUSION Fluorescent dyes with the capability of enriching wavelengths of light favored by the algal photosystem could indeed be an effective means of promoting growth of Nannochloropsis gaditana. This strategy would be particularly powerful for mass cultivation where sunlight is the only economically viable option for illumination.
Collapse
Affiliation(s)
- Min-Gyu Sung
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 Republic of Korea
| | - Jong-In Han
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 Republic of Korea
| | - Bongsoo Lee
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 Republic of Korea
- Advanced Biomass R&D Center, #2502 Building W1-3, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 Republic of Korea
| |
Collapse
|
28
|
Khoroshyy P, Bína D, Gardian Z, Litvín R, Alster J, Pšenčík J. Quenching of chlorophyll triplet states by carotenoids in algal light-harvesting complexes related to fucoxanthin-chlorophyll protein. PHOTOSYNTHESIS RESEARCH 2018; 135:213-225. [PMID: 28669083 DOI: 10.1007/s11120-017-0416-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 06/16/2017] [Indexed: 06/07/2023]
Abstract
We have used time-resolved absorption and fluorescence spectroscopy with nanosecond resolution to study triplet energy transfer from chlorophylls to carotenoids in a protective process that prevents the formation of reactive singlet oxygen. The light-harvesting complexes studied were isolated from Chromera velia, belonging to a group Alveolata, and Xanthonema debile and Nannochloropsis oceanica, both from Stramenopiles. All three light-harvesting complexes are related to fucoxanthin-chlorophyll protein, but contain only chlorophyll a and no chlorophyll c. In addition, they differ in the carotenoid content. This composition of the complexes allowed us to study the quenching of chlorophyll a triplet states by different carotenoids in a comparable environment. The triplet states of chlorophylls bound to the light-harvesting complexes were quenched by carotenoids with an efficiency close to 100%. Carotenoid triplet states were observed to rise with a ~5 ns lifetime and were spectrally and kinetically homogeneous. The triplet states were formed predominantly on the red-most chlorophylls and were quenched by carotenoids which were further identified or at least spectrally characterized.
Collapse
Affiliation(s)
- Petro Khoroshyy
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, 121 16, Prague 2, Czech Republic
| | - David Bína
- Biological Centre, Czech Academy of Sciences, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, 370 05, České Budějovice, Czech Republic
| | - Zdenko Gardian
- Biological Centre, Czech Academy of Sciences, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, 370 05, České Budějovice, Czech Republic
| | - Radek Litvín
- Biological Centre, Czech Academy of Sciences, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, 370 05, České Budějovice, Czech Republic
| | - Jan Alster
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, 121 16, Prague 2, Czech Republic
| | - Jakub Pšenčík
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, 121 16, Prague 2, Czech Republic.
| |
Collapse
|
29
|
Wolf BM, Niedzwiedzki DM, Magdaong NCM, Roth R, Goodenough U, Blankenship RE. Characterization of a newly isolated freshwater Eustigmatophyte alga capable of utilizing far-red light as its sole light source. PHOTOSYNTHESIS RESEARCH 2018; 135:177-189. [PMID: 28547584 DOI: 10.1007/s11120-017-0401-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
Oxygenic phototrophs typically utilize visible light (400-700 nm) to drive photosynthesis. However, a large fraction of the energy in sunlight is contained in the far-red region, which encompasses light beyond 700 nm. In nature, certain niche environments contain high levels of this far-red light due to filtering by other phototrophs, and in these environments, organisms with photosynthetic antenna systems adapted to absorbing far-red light are able to thrive. We used selective far-red light conditions to isolate such organisms in environmental samples. One cultured organism, the Eustigmatophyte alga Forest Park Isolate 5 (FP5), is able to absorb far-red light using a chlorophyll (Chl) a-containing antenna complex, and is able to grow under solely far-red light. Here we characterize the antenna system from this organism, which is able to shift the absorption of Chl a to >705 nm.
Collapse
Affiliation(s)
- Benjamin M Wolf
- Department of Biology, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
- Photosynthetic Antenna Research Center, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
- Department of Chemistry, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
| | - Dariusz M Niedzwiedzki
- Photosynthetic Antenna Research Center, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
| | - Nikki Cecil M Magdaong
- Department of Biology, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
- Photosynthetic Antenna Research Center, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
- Department of Chemistry, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
| | - Robyn Roth
- Washington University Center for Cellular Imaging, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
| | - Ursula Goodenough
- Department of Biology, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA
| | - Robert E Blankenship
- Department of Biology, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA.
- Photosynthetic Antenna Research Center, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA.
- Department of Chemistry, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO, USA.
| |
Collapse
|
30
|
Llansola-Portoles MJ, Litvin R, Ilioaia C, Pascal AA, Bina D, Robert B. Pigment structure in the violaxanthin-chlorophyll-a-binding protein VCP. PHOTOSYNTHESIS RESEARCH 2017; 134:51-58. [PMID: 28677008 DOI: 10.1007/s11120-017-0407-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
Resonance Raman spectroscopy was used to evaluate pigment-binding site properties in the violaxanthin-chlorophyll-a-binding protein (VCP) from Nannochloropsis oceanica. The pigments bound to this antenna protein are chlorophyll-a, violaxanthin, and vaucheriaxanthin. The molecular structures of bound Chl-a molecules are discussed with respect to those of the plant antenna proteins LHCII and CP29, the crystal structures of which are known. We show that three populations of carotenoid molecules are bound by VCP, each of which is in an all-trans configuration. We assign the lower-energy absorption transition of each of these as follows. One violaxanthin population absorbs at 485 nm, while the second population is red-shifted and absorbs at 503 nm. The vaucheriaxanthin population absorbs at 525 nm, a position red-shifted by 2138 cm-1 as compared to isolated vaucheriaxanthin in n-hexane. The red-shifted violaxanthin is slightly less planar than the blue-absorbing one, as observed for the two central luteins in LHCII, and we suggest that these violaxanthins occupy the two equivalent binding sites in VCP at the centre of the cross-brace. The presence of a highly red-shifted vaucheriaxanthin in VCP is reminiscent of the situation of FCP, in which (even more) highly red-shifted populations of fucoxanthin are present. Tuning carotenoids to absorb in the green-yellow region of the visible spectrum appears to be a common evolutionary response to competition with other photosynthetic species in the aquatic environment.
Collapse
Affiliation(s)
- Manuel J Llansola-Portoles
- Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France.
| | - Radek Litvin
- Institute of Plant Molecular Biology, Biology Centre CAS, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05, Ceske Budejovice, Czech Republic
| | - Cristian Ilioaia
- Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - Andrew A Pascal
- Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| | - David Bina
- Institute of Plant Molecular Biology, Biology Centre CAS, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05, Ceske Budejovice, Czech Republic
| | - Bruno Robert
- Institute for Integrative Biology of the Cell (I2BC), IBITECS, CEA, CNRS, Université Paris-Saclay, 91198, Gif-sur-Yvette Cedex, France
| |
Collapse
|
31
|
Huang JJ, Lin S, Xu W, Cheung PCK. Occurrence and biosynthesis of carotenoids in phytoplankton. Biotechnol Adv 2017; 35:597-618. [DOI: 10.1016/j.biotechadv.2017.05.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/13/2017] [Accepted: 05/11/2017] [Indexed: 01/08/2023]
|
32
|
Bína D, Gardian Z, Herbstová M, Litvín R. Modular antenna of photosystem I in secondary plastids of red algal origin: a Nannochloropsis oceanica case study. PHOTOSYNTHESIS RESEARCH 2017; 131:255-266. [PMID: 27734239 DOI: 10.1007/s11120-016-0315-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
Photosystem I (PSI) is a multi-subunit integral pigment-protein complex that performs light-driven electron transfer from plastocyanin to ferredoxin in the thylakoid membrane of oxygenic photoautotrophs. In order to achieve the optimal photosynthetic performance under ambient irradiance, the absorption cross section of PSI is extended by means of peripheral antenna complexes. In eukaryotes, this role is played mostly by the pigment-protein complexes of the LHC family. The structure of the PSI-antenna supercomplexes has been relatively well understood in organisms harboring the primary plastid: red algae, green algae and plants. The secondary endosymbiotic algae, despite their major ecological importance, have so far received less attention. Here we report a detailed structural analysis of the antenna-PSI association in the stramenopile alga Nannochloropsis oceanica (Eustigmatophyceae). Several types of PSI-antenna assemblies are identified allowing for identification of antenna docking sites on the PSI core. Instances of departure of the stramenopile system from the red algal model of PSI-Lhcr structure are recorded, and evolutionary implications of these observations are discussed.
Collapse
Affiliation(s)
- David Bína
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Zdenko Gardian
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Miroslava Herbstová
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Radek Litvín
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic.
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
| |
Collapse
|
33
|
Bína D, Bouda K, Litvín R. A two-component nonphotochemical fluorescence quenching in eustigmatophyte algae. PHOTOSYNTHESIS RESEARCH 2017; 131:65-77. [PMID: 27485797 DOI: 10.1007/s11120-016-0299-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
Eustigmatophyte algae represent an interesting model system for the study of the regulation of the excitation energy flow due to their use of violaxanthin both as a major light-harvesting pigment and as the basis of xanthophyll cycle. Fluorescence induction kinetics was studied in an oleaginous marine alga Nannochloropsis oceanica. Nonphotochemical fluorescence quenching was analyzed in detail with respect to the state of the cellular xanthophyll pool. Two components of nonphotochemical fluorescence quenching (NPQ), both dependent on the presence of zeaxanthin, were clearly resolved, denoted as slow and fast NPQ based on kinetics of their formation. The slow component was shown to be in direct proportion to the amount of zeaxanthin, while the fast NPQ component was transiently induced in the presence of membrane potential on subsecond timescales. The applicability of these observations to other eustigmatophyte species is demonstrated by measurements of other representatives of this algal group, both marine and freshwater.
Collapse
Affiliation(s)
- David Bína
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Karel Bouda
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Radek Litvín
- Institute of Plant Molecular Biology, Biology Centre CAS, Branišovská 31, 370 05, České Budějovice, Czech Republic.
- Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
| |
Collapse
|
34
|
Alboresi A, Le Quiniou C, Yadav SKN, Scholz M, Meneghesso A, Gerotto C, Simionato D, Hippler M, Boekema EJ, Croce R, Morosinotto T. Conservation of core complex subunits shaped the structure and function of photosystem I in the secondary endosymbiont alga Nannochloropsis gaditana. THE NEW PHYTOLOGIST 2017; 213:714-726. [PMID: 27620972 PMCID: PMC5216901 DOI: 10.1111/nph.14156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/13/2016] [Indexed: 05/03/2023]
Abstract
Photosystem I (PSI) is a pigment protein complex catalyzing the light-driven electron transport from plastocyanin to ferredoxin in oxygenic photosynthetic organisms. Several PSI subunits are highly conserved in cyanobacteria, algae and plants, whereas others are distributed differentially in the various organisms. Here we characterized the structural and functional properties of PSI purified from the heterokont alga Nannochloropsis gaditana, showing that it is organized as a supercomplex including a core complex and an outer antenna, as in plants and other eukaryotic algae. Differently from all known organisms, the N. gaditana PSI supercomplex contains five peripheral antenna proteins, identified by proteome analysis as type-R light-harvesting complexes (LHCr4-8). Two antenna subunits are bound in a conserved position, as in PSI in plants, whereas three additional antennae are associated with the core on the other side. This peculiar antenna association correlates with the presence of PsaF/J and the absence of PsaH, G and K in the N. gaditana genome and proteome. Excitation energy transfer in the supercomplex is highly efficient, leading to a very high trapping efficiency as observed in all other PSI eukaryotes, showing that although the supramolecular organization of PSI changed during evolution, fundamental functional properties such as trapping efficiency were maintained.
Collapse
Affiliation(s)
- Alessandro Alboresi
- Dipartimento di BiologiaUniversità di PadovaVia U. Bassi 58/B35121PadovaItaly
| | - Clotilde Le Quiniou
- Department of Physics and Astronomy and Institute for Lasers, Life and BiophotonicsFaculty of SciencesVU University AmsterdamDe Boelelaan 10811081 HVAmsterdamthe Netherlands
| | - Sathish K. N. Yadav
- Electron Microscopy GroupGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Martin Scholz
- Institute of Plant Biology and BiotechnologyUniversity of MünsterMünster48143Germany
| | - Andrea Meneghesso
- Dipartimento di BiologiaUniversità di PadovaVia U. Bassi 58/B35121PadovaItaly
| | - Caterina Gerotto
- Dipartimento di BiologiaUniversità di PadovaVia U. Bassi 58/B35121PadovaItaly
| | - Diana Simionato
- Dipartimento di BiologiaUniversità di PadovaVia U. Bassi 58/B35121PadovaItaly
| | - Michael Hippler
- Institute of Plant Biology and BiotechnologyUniversity of MünsterMünster48143Germany
| | - Egbert J. Boekema
- Electron Microscopy GroupGroningen Biomolecular Sciences and Biotechnology InstituteUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Roberta Croce
- Department of Physics and Astronomy and Institute for Lasers, Life and BiophotonicsFaculty of SciencesVU University AmsterdamDe Boelelaan 10811081 HVAmsterdamthe Netherlands
| | - Tomas Morosinotto
- Dipartimento di BiologiaUniversità di PadovaVia U. Bassi 58/B35121PadovaItaly
| |
Collapse
|
35
|
Llansola-Portoles MJ, Uragami C, Pascal AA, Bina D, Litvin R, Robert B. Pigment structure in the FCP-like light-harvesting complex from Chromera velia. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:1759-1765. [DOI: 10.1016/j.bbabio.2016.08.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 08/13/2016] [Accepted: 08/16/2016] [Indexed: 10/21/2022]
|