ArticleThe Plant cell2013
The Arabidopsis nox mutant lacking carotene hydroxylase activity reveals a critical role for xanthophylls in photosystem I biogenesis.
Article in The Plant cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 35 citations in OpenAlex.
- Structural determinants for red-shifted absorption in higher-plants Photosystem I.The New phytologist · 2025Article
- Characterization and functional validation of β-carotene hydroxylaseHorticulture research · 2022Article
- High Carotenoid Mutants ofPlants (Basel, Switzerland) · 2021Article
- Lycopene β-cyclase expression influences plant physiology, development, and metabolism in tobacco plants.Journal of experimental botany · 2021Article
- The Genetic Components of a Natural Color Palette: A Comprehensive List of Carotenoid Pathway Mutations in Plants.Frontiers in plant science · 2021Review
- Photosynthesis without β-carotene.eLife · 2020Article
- Phycobilisome integrity and functionality in lipid unsaturation and xanthophyll mutants in Synechocystis.Photosynthesis research · 2020Article
- Potential and Challenges of Improving Photosynthesis in Algae.Plants (Basel, Switzerland) · 2020Review
- RBOH-Dependent ROS Synthesis and ROS Scavenging by Plant Specialized Metabolites To Modulate Plant Development and Stress Responses.Chemical research in toxicology · 2019Review
- Recovering Tomato Landraces to Simultaneously Improve Fruit Yield and Nutritional Quality Against Salt Stress.Frontiers in plant science · 2018Article
- Bilin-Dependent Photoacclimation inThe Plant cell · 2017Article
- The function of LHCBM4/6/8 antenna proteins in Chlamydomonas reinhardtii.Journal of experimental botany · 2017Article
- An In Vivo Quantitative Comparison of Photoprotection in Arabidopsis Xanthophyll Mutants.Frontiers in plant science · 2016Article
- A thylakoid membrane protein harboring a DnaJ-type zinc finger domain is required for photosystem I accumulation in plants.The Journal of biological chemistry · 2014Article
- Domestication of the green alga Chlorella sorokiniana: reduction of antenna size improves light-use efficiency in a photobioreactor.Biotechnology for biofuels · 2014Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Carotenes, and their oxygenated derivatives xanthophylls, are essential components of the photosynthetic apparatus. They contribute to the assembly of photosynthetic complexes and participate in light absorption and chloroplast photoprotection. Here, we studied the role of xanthophylls, as distinct from that of carotenes, by characterizing a no xanthophylls (nox) mutant of Arabidopsis thaliana, which was obtained by combining mutations targeting the four carotenoid hydroxylase genes. nox plants retained α- and β-carotenes but were devoid in xanthophylls. The phenotype included depletion of light-harvesting complex (LHC) subunits and impairment of nonphotochemical quenching, two effects consistent with the location of xanthophylls in photosystem II antenna, but also a decreased efficiency of photosynthetic electron transfer, photosensitivity, and lethality in soil. Biochemical analysis revealed that the nox mutant was specifically depleted in photosystem I function due to a severe deficiency in PsaA/B subunits. While the stationary level of psaA/B transcripts showed no major differences between genotypes, the stability of newly synthesized PsaA/B proteins was decreased and translation of psaA/B mRNA was impaired in nox with respect to wild-type plants. We conclude that xanthophylls, besides their role in photoprotection and LHC assembly, are also needed for photosystem I core translation and stability, thus making these compounds indispensable for autotrophic growth.
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