ArticlePlant physiology2007
Distinct functions for the two PsbP-like proteins PPL1 and PPL2 in the chloroplast thylakoid lumen of Arabidopsis.
Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
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69 citing papers in PubMed.
- Hyperspectral phenotyping and GWAS identify novel QTLs for soybean photosynthetic rate.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Genome-wide association mapping, phylogenetic study, and multivariate analysis of component traits of grain yield in wheat under heat stress conditions.Plant molecular biology · 2026Article
- Photosystem II: commonality and diversity with emphasis on the extrinsic subunits.Plant & cell physiology · 2025Review
- Mediated pleiotropy drives the negative correlation of total carotenoid and dry matter contents in cassava (Manihot esculenta).Genetics · 2025Article
- The lumenal domain of Cyt bPhotosynthesis research · 2025Article
- α/β Hydrolases: Toward Unraveling Entangled Classification.Proteins · 2025Article
- ACT2.6: Global Gene Coexpression Network inGenes · 2025Article
- Structure, function, and assembly of PSI in thylakoid membranes of vascular plants.The Plant cell · 2024Review
- A pgr5 suppressor screen uncovers two distinct suppression mechanisms and links cytochrome b6f complex stability to PGR5.The Plant cell · 2024Article
- Methyl viologen-induced changes in the Arabidopsis proteome implicate PATELLIN 4 in oxidative stress responses.Journal of experimental botany · 2024Article
- A newly identified photosystem II Subunit P geneFrontiers in plant science · 2024Article
- Sensory plastid-associated PsbP DOMAIN-CONTAINING PROTEIN 3 triggers plant growth- and defense-related epigenetic responses.The Plant journal : for cell and molecular biology · 2023Article
- Effects of abiotic stress on photosystem II proteins.Photosynthetica · 2023Review
- Genetic control of tolerance to drought stress in soybean.BMC plant biology · 2022Article
- Binding and functions of the two chloride ions in the oxygen-evolving center of photosystem II.Photosynthesis research · 2022Review
- Transcriptome analysis provides new insights into plants responses under phosphate starvation in association with chilling stress.BMC plant biology · 2022Article
- Article
- Characterization of the Free and Membrane-Associated Fractions of the Thylakoid Lumen Proteome inInternational journal of molecular sciences · 2021Article
- Developmental acclimation of the thylakoid proteome to light intensity in Arabidopsis.The Plant journal : for cell and molecular biology · 2021Article
- Two Chloroplast Proteins Negatively Regulate Plant Drought Resistance Through Separate Pathways.Plant physiology · 2020Article
9 more citing papers are in PubMed but not listed here.
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6 authors.
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Abstract
PsbP, an extrinsic subunit of photosystem II (PSII), is a nuclear-encoded protein that optimizes the water-splitting reaction in vivo. In addition to PsbP, higher plants have two nuclear-encoded genes for PsbP homologs (PsbP-like proteins [PPLs]) that show significant sequence similarity to a cyanobacterial PsbP homolog (cyanoP); however, the function of PPLs in higher plants has not yet been elucidated. In this study, we characterized Arabidopsis (Arabidopsis thaliana) mutants lacking either of two PPLs, PPL1 and PPL2. Phylogenetic analysis suggests that PPL1 would be an ortholog of cyanoP, and PPL2 and PsbP may have a paralogous relationship with PPL1. Analysis on mRNA expression profiles showed that PPL1 expressed under stress conditions and PPL2 coexpressed with the subunits of chloroplast NAD(P)H dehydrogenase (NDH) complex. Consistent with these suggestions, PSII activity in a ppl1 mutant was more sensitive to high-intensity light than wild type, and the recovery of photoinhibited PSII activity was delayed in ppl1 plants. Therefore, PPL1 is required for efficient repair of photodamaged PSII. Furthermore, the stoichiometric level and activity of the chloroplast NDH complex in thylakoids were severely decreased in a ppl2 mutant, demonstrating that PPL2 is a novel thylakoid lumenal factor required for accumulation of the chloroplast NDH complex. These results suggest that during endosymbiosis and subsequent gene transfer to the host nucleus, cyanoP from ancient cyanobacteria evolved into PPL1, PPL2, and PsbP, and each of them has a distinct role in photosynthetic electron transfer in Arabidopsis.
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