ArticleJournal of experimental botany2017
The plastid-encoded PsaI subunit stabilizes photosystem I during leaf senescence in tobacco.
Article in Journal of experimental botany, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 39 citations in OpenAlex.
- Differential Alteration of Gene Expression by Benzyl Adenine andPlants (Basel, Switzerland) · 2025Article
- Assembly-dependent translational feedback regulation of photosynthetic proteins in land plants.Nature plants · 2025Article
- Functional relocation of the maize chloroplast atpB gene to the nucleus restores photosynthetic competence to a gene-edited non-photosynthetic mutant.Plant biotechnology journal · 2025Article
- Identification of STN7-associated leaf senescence networks in thylakoid membranes of Arabidopsis.iScience · 2025Article
- CO-EXPRESSED WITH PSI ASSEMBLY1 (CEPA1) is a photosystem I assembly factor in Arabidopsis.The Plant cell · 2024Article
- Structure, function, and assembly of PSI in thylakoid membranes of vascular plants.The Plant cell · 2024Review
- Decoding the Chloroplast Genome ofInternational journal of molecular sciences · 2024Article
- Article
- Chloroplast genome assembly ofFrontiers in plant science · 2023Article
- Chloroplast translational regulation uncovers nonessential photosynthesis genes as key players in plant cold acclimation.The Plant cell · 2022Article
- Whole-Transcriptome Analysis Reveals Autophagy Is Involved in Early Senescence ofFrontiers in plant science · 2022Article
- Knockdown of the plastid-encoded acetyl-CoA carboxylase gene uncovers functions in metabolism and development.Plant physiology · 2021Article
- The availability of neither D2 nor CP43 limits the biogenesis of photosystem II in tobacco.Plant physiology · 2021Article
- Improving plant drought tolerance and growth under water limitation through combinatorial engineering of signalling networks.Plant biotechnology journal · 2021Article
- Leaf Phenological Stages of Winter Oilseed Rape (Frontiers in plant science · 2021Article
- Combinatory actions of CP29 phosphorylation by STN7 and stability regulate leaf age-dependent disassembly of photosynthetic complexes.Scientific reports · 2020Article
- Complete Chloroplast Genomes of 14 Mangroves: Phylogenetic and Comparative Genomic Analyses.BioMed research international · 2020Article
- Limited Responsiveness of Chloroplast Gene Expression during Acclimation to High Light in Tobacco.Plant physiology · 2020Article
- Highly Resolved Systems Biology to Dissect the Etioplast-to-Chloroplast Transition in Tobacco Leaves.Plant physiology · 2019Article
- Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PsaI is the only subunit of PSI whose precise physiological function has not yet been elucidated in higher plants. While PsaI is involved in PSI trimerization in cyanobacteria, trimerization was lost during the evolution of the eukaryotic PSI, and the entire PsaI side of PSI underwent major structural remodelling to allow for binding of light harvesting complex II antenna proteins during state transitions. Here, we have generated a tobacco (Nicotiana tabacum) knockout mutant of the plastid-encoded psaI gene. We show that PsaI is not required for the redox reactions of PSI. Neither plastocyanin oxidation nor the processes at the PSI acceptor side are impaired in the mutant, and both linear and cyclic electron flux rates are unaltered. The PSI antenna cross section is unaffected, state transitions function normally, and binding of other PSI subunits to the reaction centre is not compromised. Under a wide range of growth conditions, the mutants are phenotypically and physiologically indistinguishable from wild-type tobacco. However, in response to high-light and chilling stress, and especially during leaf senescence, PSI content is reduced in the mutants, indicating that the I-subunit plays a role in stabilizing PSI complexes.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.