A5051297699- Photosynthetic Processes and Mechanisms
- Plant Stress Responses and Tolerance
- Plant responses to elevated CO2
- Mitochondrial Function and Pathology
- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- Light effects on plants
- Aluminum toxicity and tolerance in plants and animals
- Legume Nitrogen Fixing Symbiosis
- Pineapple and bromelain studies
- GABA and Rice Research
- Growth and nutrition in plants
- Plant Molecular Biology Research
- Vitamin C and Antioxidants Research
- Plant Parasitism and Resistance
- Agricultural and Food Sciences
- Redox biology and oxidative stress
- Crop Yield and Soil Fertility
- Nanoparticles: synthesis and applications
- Plant responses to water stress
- Genomics, phytochemicals, and oxidative stress
- Agricultural pest management studies
- Microbial Metabolic Engineering and Bioproduction
- Peroxisome Proliferator-Activated Receptors
- Enzyme-mediated dye degradation
Universidade Federal do Rio Grande do Sul
2020-2025
University of Rio Grande and Rio Grande Community College
2023
Universidade Federal do Rio Grande
2023
Universidade Federal do Ceará
2014-2022
University of Turku
2018-2019
Google (United States)
2017
Abstract The ionome is defined as the inorganic composition of an organism. In plants, has been shown to be integrated, concentration elements affects one another, with complex regulatory mechanisms keep nutrients, trace and toxic balanced. Iron (Fe) essential micronutrient that necessary for photosynthesis, mitochondrial respiration, redox metabolism, its concentrations in plant tissues finely regulated avoid deficiency excess stresses. It known varying Fe affect other components ionome,...
Photosynthesis involves the conversion of sunlight energy into stored chemical energy, which is achieved through electron transport along a series redox reactions. Excess photosynthetic might be dangerous due to risk molecular oxygen reduction, generating reactive species (ROS) over-accumulation. Avoiding excess ROS production requires rate coordinated with capacity acceptors in chloroplast stroma. Imbalance between donor and acceptor sides photosystem I (PSI) can lead inactivation, called...
Natural growth environments commonly include fluctuating conditions that can disrupt the photosynthetic energy balance and induce photoinhibition through inactivation of apparatus. Photosystem II (PSII) is efficiently reversed by PSII repair cycle, whereas photoinhibited photosystem I (PSI) recovers much more slowly. In current study, treatment Arabidopsis thaliana mutant proton gradient regulation 5 (pgr5) with excess light was used to compromise PSI functionality in order investigate...
The photosynthetic light reactions provide energy that is consumed and stored in electron sinks, the products of photosynthesis. A balance between consumption chloroplast vital for plants, protected by several regulation mechanisms. Photosystem I (PSI) particularly susceptible to photoinhibition when these factors become unbalanced, which can occur low temperatures or high light. In this study we used pgr5 Arabidopsis mutant lacks ΔpH-dependent transport as a model consequences PSI under We...
Retrograde signalling pathways that are triggered by changes in cellular redox homeostasis remain poorly understood. Transformed rice plants deficient peroxisomal ascorbate peroxidase APX4 (OsAPX4-RNAi) 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...
Abstract The physiological role of peroxisomal ascorbate peroxidases ( pAPX ) is unknown; therefore, we utilized 4 knockdown rice and catalase CAT inhibition to assess its in compensation under high photorespiration. induced co‐suppression the expression 3. mutants exhibited metabolic changes such as lower glycolate oxidase GO activities reduced glyoxylate content; however, APX activity was not altered. triggered different , glutathione peroxidase GPX isoforms between non‐transformed NT...
The physiological role of plant mitochondrial glutathione peroxidases is scarcely known. This study attempted to elucidate the a rice isoform (GPX1) in photosynthesis under normal growth and salinity conditions. GPX1 knockdown lines (GPX1s) were tested absence presence 100 mM NaCl for 6 d. Growth reduction GPX1s line non-stressful conditions, compared with non-transformed (NT) plants occurred parallel increased H2 O2 decreased GSH contents. These changes concurrently impairment, particularly...
Life on earth depends the presence of photoautotrophic organisms that are able to input carbon into ecosystems through process photosynthesis which, with a few specialized exceptions, takes place within chloroplast. This organelle contains most complex redox system in plants being composed numerous players including thiol reductases, peroxidases, and glutathione-related enzymes. It seems likely these proteins act together adjust metabolism enabling grow efficiently under both normal stressed...
Integrative mechanisms involving photosynthetic and antioxidant protection regulated by light intensity during in vitro ex plantlets acclimatization are poorly understood. Tobacco grown under environments were exposed to different regimes evaluate the role of photosynthesis protection. In displayed a narrow capacity cope with as revealed low net CO2 assimilation (PN), decreased actual quantum efficiency photosystem II (ΦPSII) associated non-induction non-photochemical quenching (NPQ)....
We have previously shown that rice plants silenced for peroxisomal ascorbate peroxidase display higher resilience to photosynthesis under oxidative stress and photorespiratory conditions. However, the redox mechanisms underlying intriguing response remain unknown. Here, we tested hypothesis favorable effects triggered by APX deficiency on CAT inhibition are dependent intensity of photorespiration associated with abundance rearrangement photosynthetic proteins. Non-transformed (NT)...