A possible role for calcium in oxidative plant stress

Free Radical Research Communications
A H Price

Abstract

Disruption of calcium homoeostasis may be crucially important in damaging animal cells under oxidising conditions. In hepatocytes, oxidative stress causes an increase in cytosolic calcium, a process which is thought to be largely responsible for subsequent cell death. The oxidation of glutathione precedes a flux of calcium into the cytoplasm from internal and external sources. The possibility that similar events occur in plant cells has been tested using strips of epidermis taken from leaves of Commelina communis. The closure of stomata in response to many chemical or physical stimuli is thought to involve a transient rise in cytosolic calcium. Paraquat (10(-4) M) and hydrogen peroxide (10(-3) M) caused a marked reduction in stomatal aperture when included in the incubation medium of illuminated epidermal strips. The calcium channel blocker verapamil (10(-5) M) protected stomata from hydrogen peroxide-induced closure while the ion chelator EGTA (2 x 10(-3) M) protected stomata in both oxidising treatments. These results are discussed in so far as they support the hypothesis that a rise in cytosolic calcium may play a role in the pathology of oxidative stress in plant cells through a mechanism analogous to the liver cell system.

References

Jan 1, 1989·Free Radical Research Communications·A H PriceG A Hendry
Jan 1, 1984·Annual Review of Medicine·A Schwartz, D J Triggle

❮ Previous
Next ❯

Citations

Apr 1, 2008·The New Phytologist·Pengtao Wang, Chun-Peng Song
Jul 14, 2001·Redox Report : Communications in Free Radical Research·R Mittler, G Berkowitz
Apr 25, 2018·International Journal of Molecular Sciences·Vadim Demidchik
Mar 1, 2018·Annual Review of Plant Biology·Cezary WaszczakJaakko Kangasjärvi

❮ 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.