Changes in hydrophilic antioxidant activity in Avena sativa and Triticum aestivum leaves of different age during de-etiolation and high-light treatment.

Journal of Plant Research
Antonio CanoMarino B Arnao

Abstract

The steady-state of reactive oxygen species (ROS) in plant cells is controlled by ROS-producing and scavenging agents. A large cellular pool of antioxidant metabolites is involved in their control. Variations in this antioxidant pool may be monitored by measuring changes in hydrophilic antioxidant activity (free radical-quenching activity of water-soluble components) and ascorbic acid levels. The de-etiolation process and induction of light stress in Avena sativa and Triticum aestivum leaves were used as physiological models to study the antioxidant status at different ages. The data showed that five-day-old green plants and de-etiolated plants of the same age have similar hydrophilic antioxidant activity ( approximately 8 mumol ASC equivalents g FW(-1)), which increases during the de-etiolation process. In oat and wheat, young leaves (five days old) had higher antioxidant status (hydrophilic antioxidant activity and ascorbic acid level) than old leaves (10 and 20 days old). High-light treatment caused a decrease in antioxidant status, especially in young leaves. Hydrophilic antioxidant activity and ascorbic acid levels recovered totally or partially after 30 or 60 min in the dark. This capacity also depends on age and species....Continue Reading

References

Nov 1, 1995·The Plant Cell·T W McNellis, X W Deng
May 5, 2001·Annual Review of Plant Physiology and Plant Molecular Biology·Nicholas SmirnoffFrank A Loewus
May 5, 2001·Annual Review of Plant Physiology and Plant Molecular Biology·Ian M Moller
Nov 14, 2001·Phytochemical Analysis : PCA·M B ArnaoM Acosta
Feb 12, 2002·Nature Reviews. Molecular Cell Biology·Peter H Quail
Nov 14, 2002·Die Nahrung·Jesús F AlcoleaMarino B Arnao
Nov 26, 2002·Annals of the New York Academy of Sciences·S G BankoffR A Schluter
Sep 25, 2003·Annual Review of Plant Biology·Karl-Josef Dietz
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Kozi Asada
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Graham Noctor, Christine H. Foyer
Sep 21, 2004·Annual Review of Plant Biology·Klaus Apel, Heribert Hirt
Oct 7, 2004·Trends in Plant Science·Ron MittlerFrank Van Breusegem
Nov 27, 2004·Trends in Plant Science·Victoriano Valpuesta, Miguel A Botella

❮ Previous
Next ❯

Citations

Dec 14, 2011·International Journal of Food Sciences and Nutrition·F Sezer SenolIlkay Erdogan Orhan
Nov 1, 2007·Plant Signaling & Behavior·Károly Bóka, Norbert Orbán
Jun 12, 2020·BMC Plant Biology·Xiaohui QinChun-Peng Song

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.