Genome-Wide Signatures of Adaptation to Extreme Environments in Red Algae
Open accessAbstract
The high temperature, acidity, and heavy metal-rich environments associated with hot springs have a major impact on biological processes in resident cells. One group of photosynthetic eukaryotes, the Cyanidiophyceae (Rhodophyta), has successfully thrived in hot springs and associated sites worldwide for more than 1 billion years. Here, we analyze chromosome-level assemblies from three representative Cyanidiophyceae species to study environmental adaptation at the genomic level. We find that subtelomeric gene duplication of functional genes and loss of canonical eukaryotic traits played a major role in environmental adaptation, in addition to horizontal gene transfer events. Shared responses to environmental stress exist in Cyanidiales and Galdieriales, however, most of the adaptive genes (e.g., for arsenic detoxification) evolved independently in these lineages. Our results underline the power of local selection to shape eukaryotic genomes that may face vastly different stresses in adjacent, extreme microhabitats.
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Traditional approaches like selective breeding, strain development, and environmental adaptation have long been used to improve algal traits, but require extended periods.
“Traditional approaches like selective breeding and strain development [107,108] and environmental adaptation [109,110] have long been used to improve algal traits.However, both methods typically require extended periods of time to achieve significant improvements.”
From A Review of Algae-Based Carbon Capture, Utilization, and Storage (Algae-Based CCUS) (2024) · cites this paper as [110]
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References 110 · Cited by 83
Research works printed but not linked: 4
- [8]Seckbach, J. & Oren, A. In Algae and Cyanobacteria in Extreme Environments (ed. Joseph Seckbach) 3–25 (Springer Netherlands, 2007).
- [12]Gross, W. Enigmatic Microorganisms and Life in Extreme Environments (ed. Joseph Seckbach) (pp. 437–446. Springer, Netherlands, 1999).
- [18]Yoon, H. S., Zuccarello, G. C. & Bhattacharya, D. In Red Algae in the Genomic Age (eds Joseph Seckbach & David J. Chapman) 25-42 (Springer Netherlands, 2010).
- [108]Harris, R. S. Improved pairwise alignmnet of genomic DNA Doctor of Philosophy thesis, Pennsylvania State University (2007).
- Authors
- Cho, C. H., Park, S. I., Huang, T.-Y., Lee, Y., Ciniglia, C., Yadavalli, H. C., Yang, S. W., Bhattacharya, D., & Yoon, H. S.
- Affiliations
- Sungkyunkwan University (KR)
- University of Campania "Luigi Vanvitelli" (IT)
- Yonsei University (KR)
- Rutgers, The State University of New Jersey (US)
- Corresponding author
- Yoon, Hwan Su
- ORCID
- Venue
- Nature Communications
- Published
- 2023-01-04
- Volume
- 14
- Issue
- 1
- Pages
- 10-10
- ISSN
- 2041-1723 (ISSN-L)
- PMC
- PMC9812998
- OpenAlex
- W4313494147
- Cited by
- 83
- References
- 110
- Citations by year
- 2026: 18 · 2025: 27 · 2024: 25 · 2023: 13
- FWCI
- 7.37
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Nature Communications (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli" (submittedVersion)
- Funders
- National Aeronautics and Space Administration (80NSSC19K0462)
- United States Department of Agriculture | National Institute of Food and Agriculture (NJ01180)
- National Research Foundation of Korea (NRF-2022R1A2B5B03002312)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
- Keywords
- Cyanidiophyceae, red algae, hot springs, extreme environments, environmental adaptation, horizontal gene transfer, chromosome-level genome assembly, arsenic detoxification, local selection, photosynthetic eukaryotes
- MeSH terms
- Acclimatization, Rhodophyta, Phylogeny, Genome, Metals, Heavy, Hot Springs
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