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Rieseberg TP, Dadras A, Bergschmidt LIN, Bierenbroodspot MJ, Fürst-Jansen JMR, Irisarri I, de Vries S, Darienko T, de Vries J. Divergent responses in desiccation experiments in two ecophysiologically different Zygnematophyceae. PHYSIOLOGIA PLANTARUM 2023; 175:e14056. [PMID: 38148198 DOI: 10.1111/ppl.14056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 12/28/2023]
Abstract
Water scarcity can be considered a major stressor on land, with desiccation being its most extreme form. Land plants have found two different solutions to this challenge: avoidance and tolerance. The closest algal relatives to land plants, the Zygnematophyceae, use the latter, and how this is realized is of great interest for our understanding of the conquest of land. Here, we worked with two representatives of the Zygnematophyceae, Zygnema circumcarinatum SAG 698-1b and Mesotaenium endlicherianum SAG 12.97, who differ in habitats and drought resilience. We challenged both algal species with severe desiccation in a laboratory setup until photosynthesis ceased, followed by a recovery period. We assessed their morphological, photophysiological, and transcriptomic responses. Our data pinpoint global differential gene expression patterns that speak of conserved responses, from calcium-mediated signaling to the adjustment of plastid biology, cell envelopes, and amino acid pathways, between Zygnematophyceae and land plants despite their strong ecophysiological divergence. The main difference between the two species appears to rest in a readjustment of the photobiology of Zygnema, while Mesotaenium experiences stress beyond a tipping point.
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Affiliation(s)
- Tim P Rieseberg
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Armin Dadras
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Luisa I N Bergschmidt
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Maaike J Bierenbroodspot
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Janine M R Fürst-Jansen
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Iker Irisarri
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
- Section Phylogenomics, Centre for Molecular Biodiversity Research, Leibniz Institute for the Analysis of Biodiversity Change (LIB), Museum of Nature, Hamburg, Germany
| | - Sophie de Vries
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Tatyana Darienko
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Jan de Vries
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
- Campus Institute Data Science (CIDAS), University of Goettingen, Goettingen, Germany
- Goettingen Center for Molecular Biosciences (GZMB), Department of Applied Bioinformatics, University of Goettingen, Goettingen, Germany
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Feng X, Zheng J, Irisarri I, Yu H, Zheng B, Ali Z, de Vries S, Keller J, Fürst-Jansen JM, Dadras A, Zegers JM, Rieseberg TP, Ashok AD, Darienko T, Bierenbroodspot MJ, Gramzow L, Petroll R, Haas FB, Fernandez-Pozo N, Nousias O, Li T, Fitzek E, Grayburn WS, Rittmeier N, Permann C, Rümpler F, Archibald JM, Theißen G, Mower JP, Lorenz M, Buschmann H, von Schwartzenberg K, Boston L, Hayes RD, Daum C, Barry K, Grigoriev IV, Wang X, Li FW, Rensing SA, Ari JB, Keren N, Mosquna A, Holzinger A, Delaux PM, Zhang C, Huang J, Mutwil M, de Vries J, Yin Y. Chromosome-level genomes of multicellular algal sisters to land plants illuminate signaling network evolution. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.31.526407. [PMID: 36778228 PMCID: PMC9915684 DOI: 10.1101/2023.01.31.526407] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The filamentous and unicellular algae of the class Zygnematophyceae are the closest algal relatives of land plants. Inferring the properties of the last common ancestor shared by these algae and land plants allows us to identify decisive traits that enabled the conquest of land by plants. We sequenced four genomes of filamentous Zygnematophyceae (three strains of Zygnema circumcarinatum and one strain of Z. cylindricum) and generated chromosome-scale assemblies for all strains of the emerging model system Z. circumcarinatum. Comparative genomic analyses reveal expanded genes for signaling cascades, environmental response, and intracellular trafficking that we associate with multicellularity. Gene family analyses suggest that Zygnematophyceae share all the major enzymes with land plants for cell wall polysaccharide synthesis, degradation, and modifications; most of the enzymes for cell wall innovations, especially for polysaccharide backbone synthesis, were gained more than 700 million years ago. In Zygnematophyceae, these enzyme families expanded, forming co-expressed modules. Transcriptomic profiling of over 19 growth conditions combined with co-expression network analyses uncover cohorts of genes that unite environmental signaling with multicellular developmental programs. Our data shed light on a molecular chassis that balances environmental response and growth modulation across more than 600 million years of streptophyte evolution.
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Affiliation(s)
- Xuehuan Feng
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
| | - Jinfang Zheng
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
| | - Iker Irisarri
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
- University of Goettingen, Campus Institute Data Science (CIDAS), Goldschmidstr. 1, 37077 Goettingen, Germany
- Section Phylogenomics, Centre for Molecular biodiversity Research, Leibniz Institute for the Analysis of Biodiversity Change (LIB), Zoological Museum Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
| | - Huihui Yu
- University of Nebraska-Lincoln, Center for Plant Science Innovation, Lincoln, NE 68588, USA
| | - Bo Zheng
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
| | - Zahin Ali
- Nanyang Technological University, School of Biological Sciences, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Sophie de Vries
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Jean Keller
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, INP Toulouse, Castanet-Tolosan, 31326, France
| | - Janine M.R. Fürst-Jansen
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Armin Dadras
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Jaccoline M.S. Zegers
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Tim P. Rieseberg
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Amra Dhabalia Ashok
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Tatyana Darienko
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Maaike J. Bierenbroodspot
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
| | - Lydia Gramzow
- University of Jena, Matthias Schleiden Institute / Genetics, 07743, Jena, Germany
| | - Romy Petroll
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, Germany
- Department of Algal Development and Evolution, Max Planck Institute for Biology Tübingen, Tübingen, Germany
| | - Fabian B. Haas
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, Germany
- Department of Algal Development and Evolution, Max Planck Institute for Biology Tübingen, Tübingen, Germany
| | - Noe Fernandez-Pozo
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, Germany
- Institute for Mediterranean and Subtropical Horticulture “La Mayora” (UMA-CSIC)
| | - Orestis Nousias
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
| | - Tang Li
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
| | - Elisabeth Fitzek
- Computational Biology, Department of Biology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - W. Scott Grayburn
- Northern Illinois University, Molecular Core Lab, Department of Biological Sciences, DeKalb, IL 60115, USA
| | - Nina Rittmeier
- University of Innsbruck, Department of Botany, Research Group Plant Cell Biology, Sternwartestraße 15, A-6020 Innsbruck, Austria
| | - Charlotte Permann
- University of Innsbruck, Department of Botany, Research Group Plant Cell Biology, Sternwartestraße 15, A-6020 Innsbruck, Austria
| | - Florian Rümpler
- University of Jena, Matthias Schleiden Institute / Genetics, 07743, Jena, Germany
| | - John M. Archibald
- Dalhousie University, Department of Biochemistry and Molecular Biology, 5850 College Street, Halifax NS B3H 4R2, Canada
| | - Günter Theißen
- University of Jena, Matthias Schleiden Institute / Genetics, 07743, Jena, Germany
| | - Jeffrey P. Mower
- University of Nebraska-Lincoln, Center for Plant Science Innovation, Lincoln, NE 68588, USA
| | - Maike Lorenz
- University of Goettingen, Albrecht-von-Haller-Institute for Plant Sciences, Experimental Phycology and Culture Collection of Algae at Goettingen University (EPSAG), Nikolausberger Weg 18, 37073 Goettingen, Germany
| | - Henrik Buschmann
- University of Applied Sciences Mittweida, Faculty of Applied Computer Sciences and Biosciences, Section Biotechnology and Chemistry, Molecular Biotechnology, Technikumplatz 17, 09648 Mittweida, Germany
| | - Klaus von Schwartzenberg
- Universität Hamburg, Institute of Plant Science and Microbiology, Microalgae and Zygnematophyceae Collection Hamburg (MZCH) and Aquatic Ecophysiology and Phycology, Ohnhorststr. 18, 22609, Hamburg, Germany
| | - Lori Boston
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Richard D. Hayes
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chris Daum
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kerrie Barry
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Igor V. Grigoriev
- Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA 94720, USA
| | - Xiyin Wang
- North China University of Science and Technology
| | - Fay-Wei Li
- Boyce Thompson Institute, Ithaca, NY, USA
- Cornell University, Plant Biology Section, Ithaca, NY, USA
| | - Stefan A. Rensing
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, Germany
- University of Freiburg, Centre for Biological Signalling Studies (BIOSS), Freiburg, Germany
| | - Julius Ben Ari
- The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Rehovot 7610000, Israel
| | - Noa Keren
- The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Rehovot 7610000, Israel
| | - Assaf Mosquna
- The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Rehovot 7610000, Israel
| | - Andreas Holzinger
- University of Innsbruck, Department of Botany, Research Group Plant Cell Biology, Sternwartestraße 15, A-6020 Innsbruck, Austria
| | - Pierre-Marc Delaux
- Laboratoire de Recherche en Sciences Végétales (LRSV), Université de Toulouse, CNRS, UPS, INP Toulouse, Castanet-Tolosan, 31326, France
| | - Chi Zhang
- University of Nebraska-Lincoln, Center for Plant Science Innovation, Lincoln, NE 68588, USA
- University of Nebraska-Lincoln, School of Biological Sciences, Lincoln, NE 68588, USA
| | - Jinling Huang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
- Department of Biology, East Carolina University, Greenville, NC, USA
| | - Marek Mutwil
- Nanyang Technological University, School of Biological Sciences, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Jan de Vries
- University of Goettingen, Institute of Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstr. 1, 37077 Goettingen, Germany
- University of Goettingen, Campus Institute Data Science (CIDAS), Goldschmidstr. 1, 37077 Goettingen, Germany
- University of Goettingen, Goettingen Center for Molecular Biosciences (GZMB), Justus-von-Liebig-Weg 11, 37077 Goettingen, Germany
| | - Yanbin Yin
- University of Nebraska-Lincoln, Department of Food Science and Technology, Lincoln, NE 68588, USA
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Permann C, Gierlinger N, Holzinger A. Zygospores of the green alga Spirogyra: new insights from structural and chemical imaging. FRONTIERS IN PLANT SCIENCE 2022; 13:1080111. [PMID: 36561459 PMCID: PMC9763465 DOI: 10.3389/fpls.2022.1080111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Zygnematophyceae, a class of streptophyte green algae and sister group to land plants (Embryophytes) live in aquatic to semi-terrestrial habitats. The transition from aquatic to terrestrial environments requires adaptations in the physiology of vegetative cells and in the structural properties of their cell walls. Sexual reproduction occurs in Zygnematophyceae by conjugation and results in the formation of zygospores, possessing unique multi-layered cell walls, which might have been crucial in terrestrialization. We investigated the structure and chemical composition of field sampled Spirogyra sp. zygospore cell walls by multiple microscopical and spectral imaging techniques: light microscopy, confocal laser scanning microscopy, transmission electron microscopy following high pressure freeze fixation/freeze substitution, Raman spectroscopy and atomic force microscopy. This comprehensive analysis allowed the detection of the subcellular organization and showed three main layers of the zygospore wall, termed endo-, meso- and exospore. The endo- and exospore are composed of polysaccharides with different ultrastructural appearance, whereas the electron dense middle layer contains aromatic compounds as further characterized by Raman spectroscopy. The possible chemical composition remains elusive, but algaenan or a sporopollenin-like material is suggested. Similar compounds with a non-hydrolysable character can be found in moss spores and pollen of higher plants, suggesting a protective function against desiccation stress and high irradiation. While the tripartite differentiation of the zygospore wall is well established in Zygnematopyhceae, Spirogyra showed cellulose fibrils arranged in a helicoidal pattern in the endo- and exospore. Initial incorporation of lipid bodies during early zygospore wall formation was also observed, suggesting a key role of lipids in zygospore wall synthesis. Multimodal imaging revealed that the cell wall of the sexually formed zygospores possess a highly complex internal structure as well as aromatics, likely acting as protective compounds and leading to impregnation. Both, the newly discovered special three-dimensional arrangement of microfibrils and the integration of highly resistant components in the cell wall are not found in the vegetative state. The variety of methods gave a comprehensive view on the intricate zygospore cell wall and its potential key role in the terrestrial colonization and plant evolution is discussed.
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Affiliation(s)
- Charlotte Permann
- Department of Botany, University of Innsbruck, Functional Plant Biology, Innsbruck, Austria
| | - Notburga Gierlinger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Andreas Holzinger
- Department of Botany, University of Innsbruck, Functional Plant Biology, Innsbruck, Austria
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Domozych DS, Bagdan K. The cell biology of charophytes: Exploring the past and models for the future. PLANT PHYSIOLOGY 2022; 190:1588-1608. [PMID: 35993883 PMCID: PMC9614468 DOI: 10.1093/plphys/kiac390] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Charophytes (Streptophyta) represent a diverse assemblage of extant green algae that are the sister lineage to land plants. About 500-600+ million years ago, a charophyte progenitor successfully colonized land and subsequently gave rise to land plants. Charophytes have diverse but relatively simple body plans that make them highly attractive organisms for many areas of biological research. At the cellular level, many charophytes have been used for deciphering cytoskeletal networks and their dynamics, membrane trafficking, extracellular matrix secretion, and cell division mechanisms. Some charophytes live in challenging habitats and have become excellent models for elucidating the cellular and molecular effects of various abiotic stressors on plant cells. Recent sequencing of several charophyte genomes has also opened doors for the dissection of biosynthetic and signaling pathways. While we are only in an infancy stage of elucidating the cell biology of charophytes, the future application of novel analytical methodologies in charophyte studies that include a broader survey of inclusive taxa will enhance our understanding of plant evolution and cell dynamics.
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Affiliation(s)
| | - Kaylee Bagdan
- Department of Biology, Skidmore Microscopy Imaging Center, Skidmore College, Saratoga Springs, New York 12866, USA
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Trumhová K, Klimešová V, Pichrtová M. Seasonal Dynamics of Zygnema (Zygnematophyceae) Mats from the Austrian Alps. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02105-6. [PMID: 36053304 DOI: 10.1007/s00248-022-02105-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Filamentous green algae of the genus Zygnema are an essential part of hydro-terrestrial ecosystems. Despite several studies on their resistance to natural stresses, little is known about the composition of their assemblages and the changes they undergo over time. Two sites at altitudes above 2200 m a.s.l. in the Austrian Alps were selected for a 2-year observation period and sampled five times. Molecular phylogenetic analysis of the 152 isolated strains of Zygnema sp. was performed based on the rbcL and trnG sequences. Seven genotypes were found at these sites during the samplings, but their proportion varied throughout the seasons. The site with a more stable water regime also had a more stable representation of genotypes, in contrast to the site with fluctuating water availability. The mats formed resistant pre-akinetes at the end of the season with reduced photosynthetic activity. Contrary to expectations, the mats were not exposed to extremely cold temperatures in winter due to snow cover. Some genotypes have been previously observed at this site, indicating that the population composition is stable. This work highlights the importance of resistant pre-akinetes in surviving winter conditions, the ability of algae to re-establish mats, and the need to address the hidden diversity of the genus Zygnema.
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Affiliation(s)
- Kateřina Trumhová
- Faculty of Science, Department of Botany, Charles University, Benátská 2, 128 00, Prague, Czech Republic.
| | - Vanda Klimešová
- Institute of Criminalistics Prague, Strojnická 27, 170 89, Prague, Czech Republic
| | - Martina Pichrtová
- Faculty of Science, Department of Botany, Charles University, Benátská 2, 128 00, Prague, Czech Republic
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Fürst-Jansen JM, de Vries S, Lorenz M, von Schwartzenberg K, Archibald JM, de Vries J. Submergence of the filamentous Zygnematophyceae Mougeotia induces differential gene expression patterns associated with core metabolism and photosynthesis. PROTOPLASMA 2022; 259:1157-1174. [PMID: 34939169 PMCID: PMC9385824 DOI: 10.1007/s00709-021-01730-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 12/06/2021] [Indexed: 06/01/2023]
Abstract
The streptophyte algal class Zygnematophyceae is the closest algal sister lineage to land plants. In nature, Zygnematophyceae can grow in both terrestrial and freshwater habitats and how they do this is an important unanswered question. Here, we studied what happens to the zygnematophyceaen alga Mougeotia sp., which usually occurs in permanent and temporary freshwater bodies, when it is shifted to liquid growth conditions after growth on a solid substrate. Using global differential gene expression profiling, we identified changes in the core metabolism of the organism interlinked with photosynthesis; the latter went hand in hand with measurable impact on the photophysiology as assessed via pulse amplitude modulation (PAM) fluorometry. Our data reveal a pronounced change in the overall physiology of the alga after submergence and pinpoint candidate genes that play a role. These results provide insight into the importance of photophysiological readjustment when filamentous Zygnematophyceae transition between terrestrial and aquatic habitats.
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Affiliation(s)
- Janine M.R. Fürst-Jansen
- Department of Applied Bioinformatics, Institute for Microbiology and Genetics, University of Goettingen, Goldschmidtstr. 1, University of Goettingen, 37077 Goettingen, Germany
| | - Sophie de Vries
- Department of Applied Bioinformatics, Institute for Microbiology and Genetics, University of Goettingen, Goldschmidtstr. 1, University of Goettingen, 37077 Goettingen, Germany
| | - Maike Lorenz
- Department of Experimental Phycology and SAG Culture Collection of Algae, Albrecht-von-Haller Institute for Plant Science, University of Goettingen, Nikolausberger Weg 18, 37073 Goettingen, Germany
| | - Klaus von Schwartzenberg
- Institute of Plant Science and Microbiology, Microalgae and Zygnematophyceae Collection Hamburg (MZCH) and Aquatic Ecophysiology and Phycology, Universität Hamburg, Ohnhorststr. 18, 22609 Hamburg, Germany
| | - John M. Archibald
- Department of Biochemistry and Molecular Biology, Dalhousie University, Sir Charles Tupper Medical Building, 5850 College Street, Halifax, NS B3H 4R2 Canada
| | - Jan de Vries
- Department of Applied Bioinformatics, Institute for Microbiology and Genetics, University of Goettingen, Goldschmidtstr. 1, University of Goettingen, 37077 Goettingen, Germany
- Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Justus-von-Liebig-Weg 11, 37077 Goettingen, Germany
- Campus Institute Data Science (CIDAS), University of Goettingen, Goldschmidstr. 1, 37077 Goettingen, Germany
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Acquisition of desiccation tolerance in Haematococcus pluvialis requires photosynthesis and coincides with lipid and astaxanthin accumulation. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102699] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kant Mehta S. Assessing the prospects of Zygnema heydrichii, a filamentous Chlorophyte, as a biodiesel feedstock. BIORESOURCE TECHNOLOGY 2022; 345:126487. [PMID: 34871720 DOI: 10.1016/j.biortech.2021.126487] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 06/13/2023]
Abstract
This research aimed to investigate the suitability of the filamentous microalga Zygnema heydrichii as a biodiesel feedstock. Under ambient culture conditions, biomass yield, lipid content, and fatty acid composition were measured. The effects of nutrient deprivation, pH, and salinity on biomass and lipid production were also investigated. Z. heydrichii under nutrient-enriched medium showed specific growth rate (µ) 0.31 day-1 and lipid content 14.75% DW. The most abundant fatty acids were C16:0, C18:1, C18:2 and C18:3, all of which are considered appropriate for biodiesel production. Nitrogen and phosphorus depletion from the growth medium further increased lipid content to 21.45% and 15.35% DW, respectively. The N depletion of the medium remarkably increased TAG content of the culture. Z. heydrichii possess great ability to grow in salty water (40 Mm NaCl). A low-cost, semi-continuous outdoor culture yielded biomass and lipid productivity of 0.208 g day-1and 0.038 g L-1 day-1, respectively.
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Juijuljerm R, Vanijajiva O, Chittapun S. The potential of using akinetes as seed starters for Cladophora glomerata cultivation: Germination and growth of akinetes under different light intensities and humic concentrations. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Hejduková E, Nedbalová L. Experimental freezing of freshwater pennate diatoms from polar habitats. PROTOPLASMA 2021; 258:1213-1229. [PMID: 33909137 DOI: 10.1007/s00709-021-01648-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
Diatoms are microalgae that thrive in a range of habitats worldwide including polar areas. Remarkably, non-marine pennate diatoms do not create any morphologically distinct dormant stages that could help them to successfully face unfavourable conditions. Their survival is probably connected with the adaptation of vegetative cells to freezing and desiccation. Here we assessed the freezing tolerance of vegetative cells and vegetative-looking resting cells of 12 freshwater strains of benthic pennate diatoms isolated from polar habitats. To test the effect of various environmental factors, the strains were exposed to -20 °C freezing in four differently treated cultures: (1) vegetative cells growing in standard conditions in standard WC medium and (2) resting cells induced by cold and dark acclimation and resting cells, where (3) phosphorus or (4) nitrogen deficiency were used in addition to cold and dark acclimation. Tolerance was evaluated by measurement of basal cell fluorescence of chlorophyll and determination of physiological cell status using a multiparameter fluorescent staining. Four strains out of 12 were able to tolerate freezing in at least some of the treatments. The minority of cells appeared to be active immediately after thawing process, while most cells were inactive, injured or dead. Overall, the results showed a high sensitivity of vegetative and resting cells to freezing stress among strains originating from polar areas. However, the importance of resting cells for survival was emphasized by a slight but statistically significant increase of freezing tolerance of nutrient-depleted cells. Low numbers of surviving cells in our experimental setup could indicate their importance for the overwintering of diatom populations in harsh polar conditions.
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Affiliation(s)
- Eva Hejduková
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44, Prague 2, Czech Republic.
- Institute of Botany of the Czech Academy of Sciences, Dukelská 135, 379 82, Třeboň, Czech Republic.
| | - Linda Nedbalová
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44, Prague 2, Czech Republic
- Institute of Botany of the Czech Academy of Sciences, Dukelská 135, 379 82, Třeboň, Czech Republic
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Damoo DY, Durnford DG. Long-term survival of Chlamydomonas reinhardtii during conditional senescence. Arch Microbiol 2021; 203:5333-5344. [PMID: 34383108 DOI: 10.1007/s00203-021-02508-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/22/2021] [Accepted: 08/02/2021] [Indexed: 12/29/2022]
Abstract
Chlamydomonas reinhardtii undergoes conditional senescence when grown in batch culture due to nutrient limitation. Here, we explored plastid and photo-physiological adaptations in Chlamydomonas reinhardtii during a long-term ageing experiment by methodically sampling them over 22 weeks. Following exponential growth, Chlamydomonas entered an extended declining growth phase where cells continued to divide, although at a lower rate. Ultimately, this ongoing division was fueled by the recycling of macromolecules that was obvious in the rapidly declining protein and chlorophyll content in the cell during this phase. This process was sufficient to maintain a high level of cell viability as the culture entered stationary phase. Beyond that the cell viability starts to plummet. During the turnover of macromolecules after exponential growth that saw RuBisCO levels drop, the LHCII antenna was relatively stable. This, along with the upregulation of the light stress-related proteins (LHCSR), contributes to an efficient energy dissipation mechanism to protect the ageing cells from photooxidative stress during the senescence process. Ultimately, viability dropped to about 7% at 22 weeks in a batch culture. We anticipate that this research will help further understand the various acclimation strategies carried out by Chlamydomonas to maximize survival under conditional senescence.
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Affiliation(s)
- Djihane Yushrina Damoo
- Department of Biology, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada.,Michael Smith Laboratories, Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Dion G Durnford
- Department of Biology, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada.
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12
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Permann C, Herburger K, Niedermeier M, Felhofer M, Gierlinger N, Holzinger A. Cell wall characteristics during sexual reproduction of Mougeotia sp. (Zygnematophyceae) revealed by electron microscopy, glycan microarrays and RAMAN spectroscopy. PROTOPLASMA 2021; 258:1261-1275. [PMID: 33974144 PMCID: PMC8523461 DOI: 10.1007/s00709-021-01659-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/23/2021] [Indexed: 05/22/2023]
Abstract
Mougeotia spp. collected from field samples were investigated for their conjugation morphology by light-, fluorescence-, scanning- and transmission electron microscopy. During a scalarifom conjugation, the extragametangial zygospores were initially surrounded by a thin cell wall that developed into a multi-layered zygospore wall. Maturing zygospores turned dark brown and were filled with storage compounds such as lipids and starch. While M. parvula had a smooth surface, M. disjuncta had a punctated surface structure and a prominent suture. The zygospore wall consisted of a polysaccharide rich endospore, followed by a thin layer with a lipid-like appaerance, a massive electron dense mesospore and a very thin exospore composed of polysaccharides. Glycan microarray analysis of zygospores of different developmental stages revealed the occurrence of pectins and hemicelluloses, mostly composed of homogalacturonan (HG), xyloglucans, xylans, arabino-galactan proteins and extensins. In situ localization by the probe OG7-13AF 488 labelled HG in young zygospore walls, vegetative filaments and most prominently in conjugation tubes and cross walls. Raman imaging showed the distribution of proteins, lipids, carbohydrates and aromatic components of the mature zygospore with a spatial resolution of ~ 250 nm. The carbohydrate nature of the endo- and exospore was confirmed and in-between an enrichment of lipids and aromatic components, probably algaenan or a sporopollenin-like material. Taken together, these results indicate that during zygospore formation, reorganizations of the cell walls occured, leading to a resistant and protective structure.
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Affiliation(s)
- Charlotte Permann
- Department of Botany, Functional Plant Biology, University of Innsbruck, 6020, Innsbruck, Austria
| | - Klaus Herburger
- Department of Plant and Environmental Sciences, Section for Plant Glycobiology, University of Copenhagen, 1871, Frederiksberg, Denmark
| | - Martin Niedermeier
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190, Vienna, Austria
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Martin Felhofer
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190, Vienna, Austria
| | - Notburga Gierlinger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190, Vienna, Austria
| | - Andreas Holzinger
- Department of Botany, Functional Plant Biology, University of Innsbruck, 6020, Innsbruck, Austria.
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13
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Permann C, Herburger K, Felhofer M, Gierlinger N, Lewis LA, Holzinger A. Induction of Conjugation and Zygospore Cell Wall Characteristics in the Alpine Spirogyra mirabilis (Zygnematophyceae, Charophyta): Advantage under Climate Change Scenarios? PLANTS (BASEL, SWITZERLAND) 2021; 10:1740. [PMID: 34451785 PMCID: PMC8402014 DOI: 10.3390/plants10081740] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 11/26/2022]
Abstract
Extreme environments, such as alpine habitats at high elevation, are increasingly exposed to man-made climate change. Zygnematophyceae thriving in these regions possess a special means of sexual reproduction, termed conjugation, leading to the formation of resistant zygospores. A field sample of Spirogyra with numerous conjugating stages was isolated and characterized by molecular phylogeny. We successfully induced sexual reproduction under laboratory conditions by a transfer to artificial pond water and increasing the light intensity to 184 µmol photons m-2 s-1. This, however was only possible in early spring, suggesting that the isolated cultures had an internal rhythm. The reproductive morphology was characterized by light- and transmission electron microscopy, and the latter allowed the detection of distinctly oriented microfibrils in the exo- and endospore, and an electron-dense mesospore. Glycan microarray profiling showed that Spirogyra cell walls are rich in major pectic and hemicellulosic polysaccharides, and immuno-fluorescence allowed the detection of arabinogalactan proteins (AGPs) and xyloglucan in the zygospore cell walls. Confocal RAMAN spectroscopy detected complex aromatic compounds, similar in their spectral signature to that of Lycopodium spores. These data support the idea that sexual reproduction in Zygnematophyceae, the sister lineage to land plants, might have played an important role in the process of terrestrialization.
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Affiliation(s)
- Charlotte Permann
- Department of Botany, Functional Plant Biology, University of Innsbruck, 6020 Innsbruck, Austria;
| | - Klaus Herburger
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark;
| | - Martin Felhofer
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria; (M.F.); (N.G.)
| | - Notburga Gierlinger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria; (M.F.); (N.G.)
| | - Louise A. Lewis
- Department of Ecology and Evolutionary Biology, University of Conneticut, Storrs, CT 06269-3043, USA;
| | - Andreas Holzinger
- Department of Botany, Functional Plant Biology, University of Innsbruck, 6020 Innsbruck, Austria;
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Jimel M, Kvíderová J, Elster J. Annual Cycle of Mat-Forming Filamentous Alga Tribonema cf. minus (Stramenopiles, Xanthophyceae) in Hydro-Terrestrial Habitats in the High Arctic Revealed By Multiparameter Fluorescent Staining. JOURNAL OF PHYCOLOGY 2021; 57:780-796. [PMID: 33244748 DOI: 10.1111/jpy.13109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/13/2020] [Accepted: 10/23/2020] [Indexed: 06/11/2023]
Abstract
The filamentous microalga Tribonema sp. (Stramenopiles, Xanthophyceae) plays an important role in shallow water polar (streams and seepages) and seasonally cold habitats in temperate regions (ponds). In these habitats, freezing and desiccation, and thus freeze-thawing and drying-rewetting cycles, are frequent. These regions produce visible biomass and are important components of low temperature-adapted communities. We characterized the annual cycles of a Tribonema cf. minus population in two habitats (seepage and stream) in the High Arctic, Svalbard. Seasonality, locality, and their combination (particularly changing environmental conditions) together with cultivation conditions of strains significantly affected their morphological characteristics. Morphological changes following hardening processes related to preparation for the winter period (transition from vegetative cells to akinete and/or pre-akinete) were recorded. Over the year, positive water temperatures (warmest 13.3°C) occurred for 5 months while negative (lowest temperature was -17.4°C) lasted for 7 months. In winter, there were two melt periods. Vitality staining protocol showed a high number of viable (77.4% and 53.8%) and dormant cells (1.7% and 4.1%; capable of growth and reproduction once suitable conditions return) in the winter seepage and stream, respectively. NPQ and OJIP chlorophyll fluorescence parameters revealed several hours recovery of photosynthesis (both field and control samples). During recovery, only minor or mild stress on photosynthesis was detected. FV /FM values (the photosynthetic efficiency of photosystem II in a dark-adapted state) in all field and control samples varied around 0.4. Tribonema cf. minus is capable of surviving winter Arctic conditions (perennial strategy).
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Affiliation(s)
- Matouš Jimel
- Faculty of Science, Charles University, Viničná 7, 12844, Prague 2, Czech Republic
| | - Jana Kvíderová
- Faculty of Science, University of South Bohemia, Na Zlaté Stoce 3, 370 05, České Budějovice, Czech Republic
- Institute of Botany, Czech Academy of Sciences, Dukelská 135, 379 82, Třeboň, Czech Republic
| | - Josef Elster
- Faculty of Science, University of South Bohemia, Na Zlaté Stoce 3, 370 05, České Budějovice, Czech Republic
- Institute of Botany, Czech Academy of Sciences, Dukelská 135, 379 82, Třeboň, Czech Republic
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Procházková L, Remias D, Holzinger A, Řezanka T, Nedbalová L. Ecophysiological and ultrastructural characterisation of the circumpolar orange snow alga Sanguina aurantia compared to the cosmopolitan red snow alga Sanguina nivaloides (Chlorophyta). Polar Biol 2020; 44:105-117. [PMID: 33519055 PMCID: PMC7819945 DOI: 10.1007/s00300-020-02778-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 11/18/2020] [Accepted: 11/24/2020] [Indexed: 12/20/2022]
Abstract
Red snow caused by spherical cysts can be found worldwide, while an orange snow phenomenon caused by spherical cells is restricted to (Sub-)Arctic climates. Both bloom types, occurring in the same localities at Svalbard, were compared ecophysiologically. Using a combination of molecular markers and light- and transmission electron microscopy, cells were identified as Sanguina nivaloides and Sanguina aurantia (Chlorophyceae). In search for reasons for a cosmopolitan vs. a more restricted distribution of these microbes, significant differences in fatty acid and pigment profiles of field samples were found. S. aurantia accumulated much lower levels of polyunsaturated fatty acids (21% vs. 48% of total fatty acids) and exhibited lower astaxanthin-to-chlorophyll-a ratio (2-8 vs. 12-18). These compounds play an important role in adaptation to extreme conditions at the snow surface and within snow drifts. Accordingly, the performance of photosystem II showed that one third to nearly half of the photosynthetic active irradiation was sufficient in S. aurantia, compared to S. nivaloides, to become light saturated. Furthermore, formation of plastoglobules observed in S. nivaloides but missing in S. aurantia may contribute to photoprotection. The rapid light curves of the two species show to a certain extent the shade-adapted photosynthesis under the light conditions at Svalbard (high α-value 0.16 vs. 0.11, low saturation point I k 59 vs. 86). These results indicate significant physiological and ultrastructural differences of the two genetically closely related cryoflora species, but the reasons why S. aurantia has not been found at conditions outside (Sub-)Arctic climate types remain unknown. SUPPLEMENTARY INFORMATION The online version of this article (10.1007/s00300-020-02778-0) contains supplementary material, which is available to authorised users.
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Affiliation(s)
- Lenka Procházková
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, Prague, Czech Republic
| | - Daniel Remias
- School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstr. 23, 4600 Wels, Austria
| | - Andreas Holzinger
- Functional Plant Biology, Department of Botany, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria
| | - Tomáš Řezanka
- Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Linda Nedbalová
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, Prague, Czech Republic
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16
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de Vries J, Ischebeck T. Ties between Stress and Lipid Droplets Pre-date Seeds. TRENDS IN PLANT SCIENCE 2020; 25:1203-1214. [PMID: 32921563 DOI: 10.1016/j.tplants.2020.07.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/24/2020] [Accepted: 07/30/2020] [Indexed: 05/12/2023]
Abstract
Seeds were a key evolutionary innovation. These durable structures provide a concerted solution to two challenges on land: dispersal and stress. Lipid droplets (LDs) that act as nutrient storage reservoirs are one of the main cell-biological reasons for seed endurance. Although LDs are key structures in spermatophytes and are especially abundant in seeds, they are found across plants and algae, and increase during stress. Further, the proteins that underpin their form and function often have deep homologs. We propose an evolutionary scenario in which (i) the generation of LDs arose as a mechanism to mediate general drought and desiccation resilience, and (ii) the required protein framework was co-opted by spermatophytes for a seed-specific program.
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Affiliation(s)
- Jan de Vries
- University of Goettingen, Institute for Microbiology and Genetics, Department of Applied Bioinformatics, Goldschmidtstrasse 1, 37077 Goettingen, Germany; University of Goettingen, Goettingen Center for Molecular Biosciences (GZMB), 37077 Goettingen, Germany; University of Goettingen, Campus Institute Data Science (CIDAS), Goldschmidtstrasse 1, 37077 Goettingen, Germany.
| | - Till Ischebeck
- University of Goettingen, Goettingen Center for Molecular Biosciences (GZMB), 37077 Goettingen, Germany; University of Goettingen, Albrecht-von-Haller-Institute for Plant Sciences, Department of Plant Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen, Germany.
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17
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Aigner S, Glaser K, Arc E, Holzinger A, Schletter M, Karsten U, Kranner I. Adaptation to Aquatic and Terrestrial Environments in Chlorella vulgaris (Chlorophyta). Front Microbiol 2020; 11:585836. [PMID: 33178169 PMCID: PMC7593248 DOI: 10.3389/fmicb.2020.585836] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/14/2020] [Indexed: 11/20/2022] Open
Abstract
The globally distributed green microalga Chlorella vulgaris (Chlorophyta) colonizes aquatic and terrestrial habitats, but the molecular mechanisms underpinning survival in these two contrasting environments are far from understood. Here, we compared the authentic strain of C. vulgaris from an aquatic habitat with a strain from a terrestrial high alpine habitat previously determined as Chlorella mirabilis. Molecular phylogeny of SSU rDNA (823 bp) showed that the two strains differed by one nucleotide only. Sequencing of the ITS2 region confirmed that both strains belong to the same species, but to distinct ribotypes. Therefore, the terrestrial strain was re-assessed as C. vulgaris. To study the response to environmental conditions experienced on land, we assessed the effects of irradiance and temperature on growth, of temperature on photosynthesis and respiration, and of desiccation and rehydration on photosynthetic performance. In contrast to the aquatic strain, the terrestrial strain tolerated higher temperatures and light conditions, had a higher photosynthesis-to-respiration ratio at 25°C, still grew at 30°C and was able to fully recover photosynthetic performance after desiccation at 84% relative humidity. The two strains differed most in their response to the dehydration/rehydration treatment, which was further investigated by untargeted GC–MS-based metabolite profiling to gain insights into metabolic traits differentiating the two strains. The two strains differed in their allocation of carbon and nitrogen into their primary metabolites. Overall, the terrestrial strain had higher contents of readily available nitrogen-based metabolites, especially amino acids and the polyamine putrescine. Dehydration and rehydration led to differential regulation of the amino acid metabolism, the tricarboxylic acid cycle and sucrose metabolism. The data are discussed with a view to differences in phenotypic plasticity of the two strains, and we suggest that the two genetically almost identical C. vulgaris strains are attractive models to study mechanisms that protect from abiotic stress factors, which are more frequent in terrestrial than aquatic habitats, such as desiccation and irradiation.
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Affiliation(s)
- Siegfried Aigner
- Department of Botany, University of Innsbruck, Innsbruck, Austria
| | - Karin Glaser
- Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Erwann Arc
- Department of Botany, University of Innsbruck, Innsbruck, Austria
| | | | | | - Ulf Karsten
- Institute of Biological Sciences, University of Rostock, Rostock, Germany
| | - Ilse Kranner
- Department of Botany, University of Innsbruck, Innsbruck, Austria
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Buschmann H, Holzinger A. Understanding the algae to land plant transition. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:3241-3246. [PMID: 32529251 DOI: 10.1093/jxb/eraa196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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