ArticleJournal of experimental botany2019
Impairment of peroxisomal APX and CAT activities increases protection of photosynthesis under oxidative stress.
Article in Journal of experimental botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 55 citations in OpenAlex.
- Identification of STN7-associated leaf senescence networks in thylakoid membranes of Arabidopsis.iScience · 2025Article
- Comparative analysis of synteny and functional divergence of APX genes in Fragaria vesca and Fragaria×ananassa.BMC plant biology · 2025Article
- Antioxidant Responses in Chromium-Stressed Maize as Influenced by Foliar and Root Applications of Fulvic Acid.Scientific reports · 2025Article
- Photorespiratory Metabolism and Its Regulatory Links to Plant Defence Against Pathogens.International journal of molecular sciences · 2024Review
- Exploring the response of yellow lupine (Lupinus luteus L.) root to drought mediated by pathways related to phytohormones, lipid, and redox homeostasis.BMC plant biology · 2024Article
- Ascorbate peroxidase in fruits and modulation of its activity by reactive species.Journal of experimental botany · 2024Review
- Novel insight into functions of ascorbate peroxidase in higher plants: More than a simple antioxidant enzyme.Redox biology · 2023Review
- Quick Decline and Stem PittingPlants (Basel, Switzerland) · 2023Article
- Exploration of chlorophyll fluorescence characteristics gene regulatory in rice (Frontiers in plant science · 2023Article
- Metabolic, physiological and anatomical responses of soybean plants under water deficit and high temperature condition.Scientific reports · 2022Article
- Proteomics unveil a central role for peroxisomes in butyrate assimilation of the heterotrophic Chlorophyte algaFrontiers in microbiology · 2022Article
- Peroxisomes as redox-signaling nodes in intracellular communication and stress responses.Plant physiology · 2021Review
- Chickpea glutaredoxin (Physiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Understanding photosynthesis in a spatial-temporal multiscale: The need for a systemic view.Theoretical and experimental plant physiology · 2021Article
- Photochemical Efficiency and Oxidative Metabolism of Tree Species during Acclimation to High and Low Irradiance.Plants (Basel, Switzerland) · 2020Article
- Plant Peroxisomes: A Factory of Reactive Species.Frontiers in plant science · 2020Review
- Study on Differential Protein Expression in Natural Selenium-Enriched and Non-Selenium-Enriched Rice Based on iTRAQ Quantitative Proteomics.Biomolecules · 2019Article
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Authors and funding
8 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Retrograde signalling pathways that are triggered by changes in cellular redox homeostasis remain poorly understood. Transformed rice plants that are deficient in peroxisomal ascorbate peroxidase APX4 (OsAPX4-RNAi) are known to exhibit more effective protection of photosynthesis against oxidative stress than controls when catalase (CAT) is inhibited, but the mechanisms involved have not been characterized. An in-depth physiological and proteomics analysis was therefore performed on OsAPX4-RNAi CAT-inhibited rice plants. Loss of APX4 function led to an increased abundance of several proteins that are involved in essential metabolic pathways, possibly as a result of increased tissue H2O2 levels. Higher photosynthetic activities observed in the OsAPX4-RNAi plants under CAT inhibition were accompanied by higher levels of Rubisco, higher maximum rates of Rubisco carboxylation, and increased photochemical efficiencies, together with large increases in photosynthesis-related proteins. Large increases were also observed in the levels of proteins involved in the ascorbate/glutathione cycle and in other antioxidant-related pathways, and these changes may be important in the protection of photosynthesis in the OsAPX4-RNAi plants. Large increases in the abundance of proteins localized in the nuclei and mitochondria were also observed, together with increased levels of proteins involved in important cellular pathways, particularly protein translation. Taken together, the results show that OsAPX4-RNAi plants exhibit significant metabolic reprogramming, which incorporates a more effective antioxidant response to protect photosynthesis under conditions of impaired CAT activity.
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