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The ascorbate-glutathione-α-tocopherol triad in abiotic stress response.

Abstract：

:The life of any living organism can be defined as a hurdle due to different kind of stresses. As with all living organisms, plants are exposed to various abiotic stresses, such as drought, salinity, extreme temperatures and chemical toxicity. These primary stresses are often interconnected, and lead to the overproduction of reactive oxygen species (ROS) in plants, which are highly reactive and toxic and cause damage to proteins, lipids, carbohydrates and DNA, which ultimately results in oxidative stress. Stress-induced ROS accumulation is counteracted by enzymatic antioxidant systems and non-enzymatic low molecular weight metabolites, such as ascorbate, glutathione and α-tocopherol. The above mentioned low molecular weight antioxidants are also capable of chelating metal ions, reducing thus their catalytic activity to form ROS and also scavenge them. Hence, in plant cells, this triad of low molecular weight antioxidants (ascorbate, glutathione and α-tocopherol) form an important part of abiotic stress response. In this work we are presenting a review of abiotic stress responses connected to these antioxidants.

journal_name

Int J Mol Sci

journal_title

International journal of molecular sciences

authors

Szarka A,Tomasskovics B,Bánhegyi G

doi

10.3390/ijms13044458

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

4458-83

issue

4

issn

1422-0067

pii

ijms-13-04458

journal_volume

13

pub_type

杂志文章,评审

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