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Ezzedine JA, Uwizeye C, Si Larbi G, Villain G, Louwagie M, Schilling M, Hagenmuller P, Gallet B, Stewart A, Petroutsos D, Devime F, Salze P, Liger L, Jouhet J, Dumont M, Ravanel S, Amato A, Valay JG, Jouneau PH, Falconet D, Maréchal E. Adaptive traits of cysts of the snow alga Sanguina nivaloides unveiled by 3D subcellular imaging. Nat Commun 2023; 14:7500. [PMID: 37980360 PMCID: PMC10657455 DOI: 10.1038/s41467-023-43030-7] [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: 06/08/2023] [Accepted: 10/26/2023] [Indexed: 11/20/2023] Open
Abstract
Sanguina nivaloides is the main alga forming red snowfields in high mountains and Polar Regions. It is non-cultivable. Analysis of environmental samples by X-ray tomography, focused-ion-beam scanning-electron-microscopy, physicochemical and physiological characterization reveal adaptive traits accounting for algal capacity to reside in snow. Cysts populate liquid water at the periphery of ice, are photosynthetically active, can survive for months, and are sensitive to freezing. They harbor a wrinkled plasma membrane expanding the interface with environment. Ionomic analysis supports a cell efflux of K+, and assimilation of phosphorus. Glycerolipidomic analysis confirms a phosphate limitation. The chloroplast contains thylakoids oriented in all directions, fixes carbon in a central pyrenoid and produces starch in peripheral protuberances. Analysis of cells kept in the dark shows that starch is a short-term carbon storage. The biogenesis of cytosolic droplets shows that they are loaded with triacylglycerol and carotenoids for long-term carbon storage and protection against oxidative stress.
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Affiliation(s)
- Jade A Ezzedine
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Clarisse Uwizeye
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Grégory Si Larbi
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Gaelle Villain
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Mathilde Louwagie
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Marion Schilling
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Pascal Hagenmuller
- Centre d'Etudes de la Neige, Université Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, 38000, Grenoble, France
| | - Benoît Gallet
- Institut de Biologie Structurale, Centre National de la Recherche Scientifique, Université Grenoble Alpes, Commissariat à l'Energie Atomique et aux Energies Alternatives; IRIG, 71 avenue des Martyrs, 38000, Grenoble, France
| | - Adeline Stewart
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Dimitris Petroutsos
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Fabienne Devime
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Pascal Salze
- Jardin du Lautaret, Université Grenoble-Alpes, Centre National de la Recherche Scientifique; 2233 rue de la piscine, Domaine Universitaire, 38610, Gières, France
| | - Lucie Liger
- Jardin du Lautaret, Université Grenoble-Alpes, Centre National de la Recherche Scientifique; 2233 rue de la piscine, Domaine Universitaire, 38610, Gières, France
| | - Juliette Jouhet
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Marie Dumont
- Centre d'Etudes de la Neige, Université Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, 38000, Grenoble, France
| | - Stéphane Ravanel
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Alberto Amato
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Jean-Gabriel Valay
- Jardin du Lautaret, Université Grenoble-Alpes, Centre National de la Recherche Scientifique; 2233 rue de la piscine, Domaine Universitaire, 38610, Gières, France
| | - Pierre-Henri Jouneau
- Laboratoire Modélisation et Exploration des Matériaux, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Denis Falconet
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire et Végétale, Centre National de la Recherche Scientifique, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Commissariat à l'Energie Atomique et aux Energies Alternatives, Université Grenoble Alpes; IRIG, CEA-Grenoble, 17 avenue des Martyrs, 38000, Grenoble, France.
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Segawa T, Yonezawa T, Matsuzaki R, Mori H, Akiyoshi A, Navarro F, Fujita K, Aizen VB, Li Z, Mano S, Takeuchi N. Evolution of snow algae, from cosmopolitans to endemics, revealed by DNA analysis of ancient ice. THE ISME JOURNAL 2023; 17:491-501. [PMID: 36650274 PMCID: PMC10030584 DOI: 10.1038/s41396-023-01359-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 12/24/2022] [Accepted: 01/06/2023] [Indexed: 01/18/2023]
Abstract
Recent studies of microbial biogeography have revealed the global distribution of cosmopolitans and dispersal of regional endemics, but little is known about how these processes are affected by microbial evolution. Here, we compared DNA sequences from snow/glacier algae found in an 8000-year-old ice from a glacier in central Asia with those from modern snow samples collected at 34 snow samples from globally distributed sites at the poles and mid-latitudes, to determine the evolutionary relationship between cosmopolitan and endemic phylotypes of snow algae. We further applied a coalescent theory-based demographic model to the DNA sequences. We found that the genus Raphidonema (Trebouxiophyceae) was distributed over both poles and mid-latitude regions and was detected in different ice core layers, corresponding to distinct time periods. Our results indicate that the modern cosmopolitan phylotypes belonging to Raphidonema were persistently present long before the last glacial period. Furthermore, endemic phylotypes originated from ancestral cosmopolitan phylotypes, suggesting that modern regional diversity of snow algae in the cryosphere is a product of microevolution. These findings suggest that the cosmopolitans dispersed across the world and then derived new localized endemics, which thus improves our understanding of microbial community formation by microevolution in natural environments.
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Affiliation(s)
- Takahiro Segawa
- Center for Life Science Research, University of Yamanashi, Yamanashi, Japan.
| | - Takahiro Yonezawa
- Department of Animal Science, Faculty of Agriculture, Tokyo University of Agriculture, Kanagawa, Japan.
| | - Ryo Matsuzaki
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
- Biodiversity Division, National Institute for Environmental Studies, Ibaraki, Japan
| | - Hiroshi Mori
- Advanced Genomics Center, National Institute of Genetics, Shizuoka, Japan
| | | | - Francisco Navarro
- Departamento de Matemática Aplicada a las Tecnologías de la Información y las Comunicaciones, ETSI de Telecomunicación, Universidad Politécnica de Madrid, Madrid, Spain
| | - Koji Fujita
- Graduate School of Environmental Studies, Nagoya University, Aichi, Japan
| | - Vladimir B Aizen
- Department of Earth and Space Science, University of Idaho, Moscow, Idaho, USA
| | - Zhongqin Li
- Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and National Resources/Tianshan Glaciological Station, Chinese Academy of Sciences, Gansu, China
| | - Shuhei Mano
- The Institute of Statistical Mathematics, Tokyo, Japan
| | - Nozomu Takeuchi
- Department of Earth Sciences, Graduate School of Science, Chiba University, Chiba, Japan
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Medeiros ID, Mazur E, Miadlikowska J, Flakus A, Rodriguez-Flakus P, Pardo-De la Hoz CJ, Cieślak E, Śliwa L, Lutzoni F. Turnover of Lecanoroid Mycobionts and Their Trebouxia Photobionts Along an Elevation Gradient in Bolivia Highlights the Role of Environment in Structuring the Lichen Symbiosis. Front Microbiol 2021; 12:774839. [PMID: 34987486 PMCID: PMC8721194 DOI: 10.3389/fmicb.2021.774839] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/19/2021] [Indexed: 12/21/2022] Open
Abstract
Shifts in climate along elevation gradients structure mycobiont-photobiont associations in lichens. We obtained mycobiont (lecanoroid Lecanoraceae) and photobiont (Trebouxia alga) DNA sequences from 89 lichen thalli collected in Bolivia from a ca. 4,700 m elevation gradient encompassing diverse natural communities and environmental conditions. The molecular dataset included six mycobiont loci (ITS, nrLSU, mtSSU, RPB1, RPB2, and MCM7) and two photobiont loci (ITS, rbcL); we designed new primers to amplify Lecanoraceae RPB1 and RPB2 with a nested PCR approach. Mycobionts belonged to Lecanora s.lat., Bryonora, Myriolecis, Protoparmeliopsis, the "Lecanora" polytropa group, and the "L." saligna group. All of these clades except for Lecanora s.lat. occurred only at high elevation. No single species of Lecanoraceae was present along the entire elevation gradient, and individual clades were restricted to a subset of the gradient. Most Lecanoraceae samples represent species which have not previously been sequenced. Trebouxia clade C, which has not previously been recorded in association with species of Lecanoraceae, predominates at low- to mid-elevation sites. Photobionts from Trebouxia clade I occur at the upper extent of mid-elevation forest and at some open, high-elevation sites, while Trebouxia clades A and S dominate open habitats at high elevation. We did not find Trebouxia clade D. Several putative new species were found in Trebouxia clades A, C, and I. These included one putative species in clade A associated with Myriolecis species growing on limestone at high elevation and a novel lineage sister to the rest of clade C associated with Lecanora on bark in low-elevation grassland. Three different kinds of photobiont switching were observed, with certain mycobiont species associating with Trebouxia from different major clades, species within a major clade, or haplotypes within a species. Lecanoraceae mycobionts and Trebouxia photobionts exhibit species turnover along the elevation gradient, but with each partner having a different elevation threshold at which the community shifts completely. A phylogenetically defined sampling of a single diverse family of lichen-forming fungi may be sufficient to document regional patterns of Trebouxia diversity and distribution.
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Affiliation(s)
- Ian D. Medeiros
- Department of Biology, Duke University, Durham, NC, United States
| | - Edyta Mazur
- W. Szafer Institute of Botany, Polish Academy of Sciences (PAS), Kraków, Poland
| | | | - Adam Flakus
- W. Szafer Institute of Botany, Polish Academy of Sciences (PAS), Kraków, Poland
| | | | | | - Elżbieta Cieślak
- W. Szafer Institute of Botany, Polish Academy of Sciences (PAS), Kraków, Poland
| | - Lucyna Śliwa
- W. Szafer Institute of Botany, Polish Academy of Sciences (PAS), Kraków, Poland
| | - François Lutzoni
- Department of Biology, Duke University, Durham, NC, United States
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