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The tiny giant of t...
The tiny giant of the sea, Ostreococcus's unique adaptations
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- Foresi, Noelia (author)
- Instituto de Investigaciones Biológicas-UNMdP-CONICET, Mar del Plata, Argentina
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- De Marco, María Agustina (author)
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC)-CONICET-FIBA, Mar del Plata, Argentina
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- Del Castello, Fiorella (author)
- Instituto de Investigaciones Biológicas-UNMdP-CONICET, Mar del Plata, Argentina
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- Ramirez, Leonor (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Nejamkin, Andres (author)
- Instituto de Investigaciones Biológicas-UNMdP-CONICET, Mar del Plata, Argentina
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- Calo, Gonzalo (author)
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC)-CONICET-FIBA, Mar del Plata, Argentina
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- Grimsley, Nigel (author)
- CNRS, LBBM, Sorbonne Université OOB, 1 Avenue de Pierre Fabre, Banyuls-sur-Mer, France
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- Correa-Aragunde, Natalia (author)
- Instituto de Investigaciones Biológicas-UNMdP-CONICET, Mar del Plata, Argentina
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- Martínez-Noël, Giselle M.A. (author)
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC)-CONICET-FIBA, Mar del Plata, Argentina
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(creator_code:org_t)
- Elsevier, 2024
- 2024
- English.
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In: Plant physiology and biochemistry (Paris). - : Elsevier. - 0981-9428 .- 1873-2690. ; 211
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Ostreococcus spp. are unicellular organisms with one of the simplest cellular organizations. The sequencing of the genomes of different Ostreococcus species has reinforced this status since Ostreococcus tauri has one most compact nuclear genomes among eukaryotic organisms. Despite this, it has retained a number of genes, setting it apart from other organisms with similar small genomes. Ostreococcus spp. feature a substantial number of selenocysteine-containing proteins, which, due to their higher catalytic activity compared to their selenium-lacking counterparts, may require a reduced quantity of proteins. Notably, O. tauri encodes several ammonium transporter genes, that may provide it with a competitive edge for acquiring nitrogen (N). This characteristic makes it an intriguing model for studying the efficient use of N in eukaryotes. Under conditions of low N availability, O. tauri utilizes N from abundant proteins or amino acids, such as L-arginine, similar to higher plants. However, the presence of a nitric oxide synthase (L-arg substrate) sheds light on a new metabolic pathway for L-arg in algae. The metabolic adaptations of O. tauri to day and night cycles offer valuable insights into carbon and iron metabolic configuration. O. tauri has evolved novel strategies to optimize iron uptake, lacking the classic components of the iron absorption mechanism. Overall, the cellular and genetic characteristics of Ostreococcus contribute to its evolutionary success, making it an excellent model for studying the physiological and genetic aspects of how green algae have adapted to the marine environment. Furthermore, given its potential for lipid accumulation and its marine habitat, it may represent a promising avenue for third-generation biofuels.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Bioinformatik och systembiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Bioinformatics and Systems Biology (hsv//eng)
Keyword
- Alga
- Iron
- Lipids-starch
- Mamiellales
- Mamiellophyceae
- Nitrogen
- Picoeukaryote
- Picophytoplankton
Publication and Content Type
- ref (subject category)
- for (subject category)
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