ArticleScientific reports2017
Functional analysis of photosynthetic pigment binding complexes in the green alga Haematococcus pluvialis reveals distribution of astaxanthin in Photosystems.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 42 citations in OpenAlex.
- Harnessing synthetic biology for tetraterpenoid astaxanthin production: Recent advances and challenges.Synthetic and systems biotechnology · 2026Review
- EngineeredLife (Basel, Switzerland) · 2025Article
- Article
- Astaxanthin: Past, Present, and Future.Marine drugs · 2023Review
- Monitoring the photosynthetic activity at single-cell level inPhotosynthetica · 2023Article
- Engineering astaxanthin accumulation reduces photoinhibition and increases biomass productivity under high light in Chlamydomonas reinhardtii.Biotechnology for biofuels and bioproducts · 2022Article
- Optimization of microbial cell factories for astaxanthin production: Biosynthesis and regulations, engineering strategies and fermentation optimization strategies.Synthetic and systems biotechnology · 2022Review
- Astaxanthin Bioactivity Is Determined by Stereoisomer Composition and Extraction Method.Nutrients · 2022Review
- Dual Amplified Spontaneous Emission and Lasing from Nanographene Films.Nanomaterials (Basel, Switzerland) · 2020Article
- A hypothesis about the origin of carotenoid lipid droplets in the green algae Dunaliella and Haematococcus.Planta · 2019Review
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Astaxanthin is a ketocarotenoid produced by photosynthetic microalgae. It is a pigment of high industrial interest in acquaculture, cosmetics, and nutraceutics due to its strong antioxidant power. Haematococcus pluvialis, a fresh-water microalga, accumulates high levels of astaxanthin upon oxidative stress, reaching values up to 5% per dry weight. H. pluvialis accumulates astaxanthin in oil droplets in the cytoplasm, while the chloroplast volume is reduced. In this work, we investigate the biochemical and spectroscopic properties of the H. pluvialis pigment binding complexes responsible for light harvesting and energy conversion. Our findings demonstrate that the main features of chlorophyll and carotenoid binding complexes previously reported for higher plants or Chlamydomonas reinhardtii are preserved under control conditions. Transition to astaxanthin rich cysts however leads to destabilization of the Photosystems. Surprisingly, astaxanthin was found to be bound to both Photosystem I and II, partially substituting β-carotene, and thus demonstrating possible astaxanthin biosynthesis in the plastids or transport from the cytoplasm to the chloroplast. Astaxanthin binding to Photosystems does not however improve their photoprotection, but rather reduces the efficiency of excitation energy transfer to the reaction centers. We thus propose that astaxanthin binding partially destabilizes Photosystem I and II.
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