Results 31 to 40 of about 5,253 (224)

Pectic enzymes as potential enhancers of ascorbic acid production through the D-galacturonate pathway in Solanaceae [PDF]

open access: yes, 2018
The increase of L-Ascorbic Acid (AsA) content in tomato (Solanum lycopersicum) is a common goal in breeding programs due to its beneficial effect on human health.
Barone, Amalia   +4 more
core   +2 more sources

Peroxisomal Monodehydroascorbate Reductase. Genomic Clone Characterization and Functional Analysis under Environmental Stress Conditions [PDF]

open access: yesPlant Physiology, 2005
Abstract In plant cells, ascorbate is a major antioxidant that is involved in the ascorbate-glutathione cycle. Monodehydroascorbate reductase (MDAR) is the enzymatic component of this cycle involved in the regeneration of reduced ascorbate.
Leterrier, Marina   +4 more
openaire   +3 more sources

Nitric oxide acts downstream of hydrogen peroxide in the regulation of ascorbate and glutathione metabolism by jasmonic acid in Agropyron cristatum leaves

open access: yesBiologia Plantarum, 2017
The relationship between hydrogen peroxide (H2O2) and nitric oxide (NO) in the regulation of ascorbate and glutathione metabolism by jasmonic acid (JA) in Agropyron cristatum leaves were studied.
C. Shan, T. Yang
doaj   +1 more source

Antioxidant Systems are Regulated by Nitric Oxide-Mediated Post-translational Modifications (NO-PTMs) [PDF]

open access: yes, 2016
Nitric oxide (NO) is a biological messenger that orchestrates a plethora of plant functions, mainly through post-translational modifications (PTMs) such as S-nitrosylation or tyrosine nitration.
Juan C. Begara-Morales   +7 more
core   +1 more source

Monodehydroascorbate reductase activity in the surface membrane of leukemic cells [PDF]

open access: yesEuropean Journal of Biochemistry, 1993
A transmembrane monodehydroascorbate reductase activity with a high affinity in the subpicomolar concentration range of the free radical can be measured at the surface of erythroleukemic cells using a ferricyanide‐driven redox cycle. The activity is dependent on the membrane potential and can therefore only be found in intact cells.
E, Schweinzer, H, Goldenberg
openaire   +2 more sources

Characterization and Structural Determination of Cold-Adapted Monodehydroascorbate Reductase, MDHAR, from the Antarctic Hairgrass Deschampsia Antarctica

open access: yesCrystals, 2019
Ascorbic acid (AsA) is an abundant component of plants and acts as a strong and active antioxidant. In order to maintain the antioxidative capacity of AsA, the rapid regeneration of AsA is regulated by dehydroascorbate reductase (DHAR) and ...
Ae Kyung Park   +9 more
doaj   +1 more source

Recent Developments in Enzymatic Antioxidant Defence Mechanism in Plants with Special Reference to Abiotic Stress

open access: yesBiology, 2021
The stationary life of plants has led to the evolution of a complex gridded antioxidant defence system constituting numerous enzymatic components, playing a crucial role in overcoming various stress conditions.
Vishnu D. Rajput   +10 more
doaj   +1 more source

12-oxophytodienoic acid reductase 3 (OPR3) functions as NADPH-dependent α,β-ketoalkene reductase in detoxification and monodehydroascorbate reductase in redox homeostasis [PDF]

open access: yesPlant and Cell Physiology, 2019
AbstractArabidopsis (Arabidopsis thaliana) 12-oxophytodienoic acid reductase isoform 3 (OPR3) is involved in the synthesis of jasmonic acid by reducing the α,β-unsaturated double bond of the cyclopentenone moiety in 12-oxo-phytodienoic acid. Recent research revealed that jasmonic acid synthesis is not strictly dependent on the peroxisomal OPR3.
Maynard, Daniel   +3 more
openaire   +3 more sources

Physicochemical, enzymatic and molecular characterisation of the storage protein of aerial tuber, Dioscorea bulbifera Linn.

open access: yesJournal of Genetic Engineering and Biotechnology, 2020
Background The storage protein of the aerial tuber of Dioscorea bulbifera was purified and its physicochemical, enzymatic and molecular properties determined with a view to comparing its functionality and genetic relatedness with other storage proteins ...
Olukemi Adetutu Osukoya, Adenike Kuku
doaj   +1 more source

Exogenous low-dose hydrogen peroxide enhances drought tolerance of soybean (Glycine max L.) through inducing antioxidant system [PDF]

open access: yes, 2016
Hydrogen peroxide (H2O2) functions as a signal molecule in plants under abiotic and biotic stress. In this study, the role of exogenous H2O2 in improving drought tolerance in two soybean cultivars (Glycine max L.
Guler, Neslihan Saruhan, Pehlivan, Necla
core   +1 more source

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