ArticleJournal of experimental botany2013
Excess manganese differentially inhibits photosystem I versus II in Arabidopsis thaliana.
Article in Journal of experimental botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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39 citing papers in PubMed, 134 citations in OpenAlex.
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- Study of excess manganese stress response highlights the central role of manganese exporter Mnx for holding manganese homeostasis in the cyanobacteriumMicrobiology (Reading, England) · 2024Article
- Micronutrient deficiency-induced oxidative stress in plants.Plant cell reports · 2024Review
- Metabolomics and physio-chemical analyses of mulberry plants leaves response to manganese deficiency and toxicity reveal key metabolites and their pathways in manganese tolerance.Frontiers in plant science · 2024Article
- Manganese concentration affects chloroplast structure and the photosynthetic apparatus in Marchantia polymorpha.Plant physiology · 2023Article
- Promotive Role of 5-Aminolevulinic Acid or Salicylic Acid Combined with Citric Acid on Sunflower Growth by Regulating Manganese Absorption.Antioxidants (Basel, Switzerland) · 2023Article
- Review
- Regulatory Mechanisms of Plant Growth-Promoting Rhizobacteria and Plant Nutrition against Abiotic Stresses in Brassicaceae Family.Life (Basel, Switzerland) · 2023Review
- Sex-specific competition differently regulates the response of the rhizosphere fungal community ofFrontiers in microbiology · 2023Article
- A Hormetic Spatiotemporal Photosystem II Response Mechanism of Salvia to Excess Zinc Exposure.International journal of molecular sciences · 2022Article
- Manganese toxicity disrupts indole acetic acid homeostasis and suppresses the COScientific reports · 2021Article
- Morpho-Physio-Biochemical and Molecular Responses of Maize Hybrids to Salinity and Waterlogging during Stress and Recovery Phase.Plants (Basel, Switzerland) · 2021Article
- Strategies in a metallophyte species to cope with manganese excess.Environmental geochemistry and health · 2021Article
- Manganese-induced oxidative stress, ultrastructural changes, and proteomics studies in rice plants.Protoplasma · 2021Article
- Mitigation of Pb toxicity by Mn in seedling of the cacao clonal CCN 51 genotype grown in soil: physiological, biochemical, nutritional and molecular responses.Ecotoxicology (London, England) · 2021Article
- Enhancement of Photosynthetic Iron-Use Efficiency Is an Important Trait ofPlants (Basel, Switzerland) · 2021Article
- Molecular Mechanisms and Biochemical Pathways for Micronutrient Acquisition and Storage in Legumes to Support Biofortification for Nutritional Security.Frontiers in plant science · 2021Review
- Effects of Excess Manganese on the Xylem Sap Protein Profile of Tomato (International journal of molecular sciences · 2020Article
- The OsABCI7 Transporter Interacts with OsHCF222 to Stabilize the Thylakoid Membrane in Rice.Plant physiology · 2020Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The effects of exposure to increasing manganese concentrations (50-1500 µM) from the start of the experiment on the functional performance of photosystem II (PSII) and photosystem I (PSI) and photosynthetic apparatus composition of Arabidopsis thaliana were compared. In agreement with earlier studies, excess Mn caused minimal changes in the PSII photochemical efficiency measured as F(v)/F(m), although the characteristic peak temperature of the S(2/3)Q(B) (-) charge recombinations was shifted to lower temperatures at the highest Mn concentration. SDS-PAGE and immunoblot analyses also did not exhibit any significant change in the relative abundance of PSII-associated polypeptides: PSII reaction centre protein D1, Lhcb1 (major light-harvesting protein of LHCII complex), and PsbO (OEC33, a 33 kDa protein of the oxygen-evolving complex). In addition, the abundance of Rubisco also did not change with Mn treatments. However, plants grown under excess Mn exhibited increased susceptibility to PSII photoinhibition. In contrast, in vivo measurements of the redox transients of PSI reaction centre (P700) showed a considerable gradual decrease in the extent of P700 photooxidation (P700(+)) under increased Mn concentrations compared to control. This was accompanied by a slower rate of P700(+) re-reduction indicating a downregulation of the PSI-dependent cyclic electron flow. The abundance of PSI reaction centre polypeptides (PsaA and PsaB) in plants under the highest Mn concentration was also significantly lower compared to the control. The results demonstrate for the first time that PSI is the major target of Mn toxicity within the photosynthetic apparatus of Arabidopsis plants. The possible involvement mechanisms of Mn toxicity targeting specifically PSI are discussed.
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