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Li X, Li Z, Wang F, Zhao S, Xu C, Mao Z, Duan J, Feng Y, Yang Y, Shen L, Wang G, Yang Y, Yu LJ, Sang M, Han G, Wang X, Kuang T, Shen JR, Wang W. Structures and organizations of PSI-AcpPCI supercomplexes from red tidal and coral symbiotic photosynthetic dinoflagellates. Proc Natl Acad Sci U S A 2024; 121:e2315476121. [PMID: 38319970 PMCID: PMC10873603 DOI: 10.1073/pnas.2315476121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/02/2024] [Indexed: 02/08/2024] Open
Abstract
Marine photosynthetic dinoflagellates are a group of successful phytoplankton that can form red tides in the ocean and also symbiosis with corals. These features are closely related to the photosynthetic properties of dinoflagellates. We report here three structures of photosystem I (PSI)-chlorophylls (Chls) a/c-peridinin protein complex (PSI-AcpPCI) from two species of dinoflagellates by single-particle cryoelectron microscopy. The crucial PsaA/B subunits of a red tidal dinoflagellate Amphidinium carterae are remarkably smaller and hence losing over 20 pigment-binding sites, whereas its PsaD/F/I/J/L/M/R subunits are larger and coordinate some additional pigment sites compared to other eukaryotic photosynthetic organisms, which may compensate for the smaller PsaA/B subunits. Similar modifications are observed in a coral symbiotic dinoflagellate Symbiodinium species, where two additional core proteins and fewer AcpPCIs are identified in the PSI-AcpPCI supercomplex. The antenna proteins AcpPCIs in dinoflagellates developed some loops and pigment sites as a result to accommodate the changed PSI core, therefore the structures of PSI-AcpPCI supercomplex of dinoflagellates reveal an unusual protein assembly pattern. A huge pigment network comprising Chls a and c and various carotenoids is revealed from the structural analysis, which provides the basis for our deeper understanding of the energy transfer and dissipation within the PSI-AcpPCI supercomplex, as well as the evolution of photosynthetic organisms.
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Affiliation(s)
- Xiaoyi Li
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
| | - Zhenhua Li
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Fangfang Wang
- National Facility for Protein Science in Shanghai, Chinese Academy of Sciences, Shanghai201204, China
| | - Songhao Zhao
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Caizhe Xu
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- Department of Mechanical Engineering, Tsinghua University, Beijing100084, China
| | - Zhiyuan Mao
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Jialin Duan
- National Facility for Protein Science in Shanghai, Chinese Academy of Sciences, Shanghai201204, China
| | - Yue Feng
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Yang Yang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- Laboratory for Ecology of Tropical Islands, Ministry of Education, College of Life Sciences, Hainan Normal University, Haikou571158, China
| | - Lili Shen
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Guanglei Wang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- College of Life Sciences, University of Chinese Academy of Science, Beijing100049, China
| | - Yanyan Yang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
| | - Long-Jiang Yu
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- China National Botanical Garden, Beijing100093, China
| | - Min Sang
- China National Botanical Garden, Beijing100093, China
| | - Guangye Han
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- China National Botanical Garden, Beijing100093, China
| | - Xuchu Wang
- Laboratory for Ecology of Tropical Islands, Ministry of Education, College of Life Sciences, Hainan Normal University, Haikou571158, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, College of Life Sciences, Guizhou University, Guiyang550025, China
| | - Tingyun Kuang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- China National Botanical Garden, Beijing100093, China
| | - Jian-Ren Shen
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- China National Botanical Garden, Beijing100093, China
- Research Institute for Interdisciplinary Science, Graduate School of Natural Science and Technology, Okayama University, Okayama700-8530, Japan
| | - Wenda Wang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing100093, China
- China National Botanical Garden, Beijing100093, China
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Luimstra VM, Verspagen JMH, Xu T, Schuurmans JM, Huisman J. Changes in water color shift competition between phytoplankton species with contrasting light-harvesting strategies. Ecology 2020; 101:e02951. [PMID: 31840230 PMCID: PMC7079016 DOI: 10.1002/ecy.2951] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/13/2019] [Accepted: 11/11/2019] [Indexed: 12/28/2022]
Abstract
The color of many lakes and seas is changing, which is likely to affect the species composition of freshwater and marine phytoplankton communities. For example, cyanobacteria with phycobilisomes as light-harvesting antennae can effectively utilize green or orange-red light. However, recent studies show that they use blue light much less efficiently than phytoplankton species with chlorophyll-based light-harvesting complexes, even though both phytoplankton groups may absorb blue light to a similar extent. Can we advance ecological theory to predict how these differences in light-harvesting strategy affect competition between phytoplankton species? Here, we develop a new resource competition model in which the absorption and utilization efficiency of different colors of light are varied independently. The model was parameterized using monoculture experiments with a freshwater cyanobacterium and green alga, as representatives of phytoplankton with phycobilisome-based vs. chlorophyll-based light-harvesting antennae. The parameterized model was subsequently tested in a series of competition experiments. In agreement with the model predictions, the green alga won the competition in blue light whereas the cyanobacterium won in red light, irrespective of the initial relative abundances of the species. These results are in line with observed changes in phytoplankton community structure in response to lake brownification. Similarly, in marine waters, the model predicts dominance of Prochlorococcus with chlorophyll-based light-harvesting complexes in blue light but dominance of Synechococcus with phycobilisomes in green light, with a broad range of coexistence in between. These predictions agree well with the known biogeographical distributions of these two highly abundant marine taxa. Our results offer a novel trait-based approach to understand and predict competition between phytoplankton species with different photosynthetic pigments and light-harvesting strategies.
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Affiliation(s)
- Veerle M. Luimstra
- Department of Freshwater and Marine EcologyInstitute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamPO Box 94240Amsterdam1090 GEThe Netherlands
- WetsusEuropean Centre of Excellence for Sustainable Water TechnologyOostergoweg 9Leeuwarden8911 MAThe Netherlands
| | - Jolanda M. H. Verspagen
- Department of Freshwater and Marine EcologyInstitute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamPO Box 94240Amsterdam1090 GEThe Netherlands
| | - Tianshuo Xu
- Department of Freshwater and Marine EcologyInstitute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamPO Box 94240Amsterdam1090 GEThe Netherlands
| | - J. Merijn Schuurmans
- Department of Freshwater and Marine EcologyInstitute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamPO Box 94240Amsterdam1090 GEThe Netherlands
| | - Jef Huisman
- Department of Freshwater and Marine EcologyInstitute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamPO Box 94240Amsterdam1090 GEThe Netherlands
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Kaňa R, Kotabová E, Kopečná J, Trsková E, Belgio E, Sobotka R, Ruban AV. Violaxanthin inhibits nonphotochemical quenching in light-harvesting antenna of Chromera velia. FEBS Lett 2016; 590:1076-85. [PMID: 26988983 DOI: 10.1002/1873-3468.12130] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 01/01/2023]
Abstract
Non-photochemical quenching (NPQ) is a photoprotective mechanism in light-harvesting antennae. NPQ is triggered by chloroplast thylakoid lumen acidification and is accompanied by violaxanthin de-epoxidation to zeaxanthin, which further stimulates NPQ. In the present study, we show that violaxanthin can act in the opposite direction to zeaxanthin because an increase in the concentration of violaxanthin reduced NPQ in the light-harvesting antennae of Chromera velia. The correlation overlapped with a similar relationship between violaxanthin and NPQ as observed in isolated higher plant light-harvesting complex II. The data suggest that violaxanthin in C. velia can act as an inhibitor of NPQ, indicating that violaxanthin has to be removed from the vicinity of the protein to reach maximal NPQ.
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Affiliation(s)
- Radek Kaňa
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic.,Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Eva Kotabová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic.,Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Jana Kopečná
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic
| | - Eliška Trsková
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic.,Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Erica Belgio
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic.,School of Biological and Chemical Sciences, Queen Mary University of London, UK
| | - Roman Sobotka
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic.,Faculty of Sciences, University of South Bohemia, České Budějovice, Czech Republic
| | - Alexander V Ruban
- School of Biological and Chemical Sciences, Queen Mary University of London, UK
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