ArticleJournal of experimental botany2021
Papain-like cysteine proteases are required for the regulation of photosynthetic gene expression and acclimation to high light stress.
Article in Journal of experimental botany, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 13 citations in OpenAlex.
- Rapid COThe Plant journal : for cell and molecular biology · 2026Article
- Uncovering the genetic architecture of biomass yield and related traits in Southern US oat germplasm using genome-wide association study.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- PtCP1 Is an Extraplastidial Cysteine Protease Involved in Leaf Protein Degradation ofPlants (Basel, Switzerland) · 2026Article
- Long-Term Phytaspase Responses inInternational journal of molecular sciences · 2025Article
- Genome-wide association for multiple quantitative traits in forage oat germplasm based on specific length amplified fragment sequencing.Frontiers in plant science · 2025Article
- Article
- Maquiberry Cystatins: Recombinant Expression, Characterization, and Use to Protect Tooth Dentin and Enamel.Biomedicines · 2023Article
- Transcriptomic Analysis of Radish (Plants (Basel, Switzerland) · 2022Article
- Transcriptome, metabolome and suppressor analysis reveal an essential role for the ubiquitin-proteasome system in seedling chloroplast development.BMC plant biology · 2022Article
- The Papain-like Cysteine ProteaseInternational journal of molecular sciences · 2021Article
- Plant proteases: from molecular mechanisms to functions in development and immunity.Journal of experimental botany · 2021Article
Corrections and comments
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chloroplasts are considered to be devoid of cysteine proteases. Using transgenic Arabidopsis lines expressing the rice cystatin, oryzacystatin I (OC-I), in the chloroplasts (PC lines) or cytosol (CYS lines), we explored the hypothesis that cysteine proteases regulate photosynthesis. The CYS and PC lines flowered later than the wild type (WT) and accumulated more biomass after flowering. In contrast to the PC rosettes, which accumulated more leaf chlorophyll and carotenoid pigments than the WT, the CYS lines had lower amounts of leaf pigments. High-light-dependent decreases in photosynthetic carbon assimilation and the abundance of the Rubisco large subunit protein, the D1 protein, and the phosphorylated form of D1 proteins were attenuated in the CYS lines and reversed in the PC lines relative to the WT. However, the transgenic lines had higher amounts of LHC, rbcs, pasbA, and pasbD transcripts than the WT, and also showed modified chloroplast to nucleus signalling. We conclude that cysteine proteases accelerate the reconfiguration of the chloroplast proteome after flowering and in response to high-light stress. Inhibition of cysteine proteases, such as AtCEP1, slows chloroplast protein degradation and stimulates photosynthetic gene expression and chloroplast to nucleus signalling, enhancing stress tolerance traits.
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