نتایج جستجو برای: enzymatic antioxidant defense

تعداد نتایج: 217182  

One of the major abiotic stresses that negatively affects plants is the presence of heavy metals. Soil pollution with heavy metals, resulting from the industrial development and use of fertilizers containing heavy metals, has become a major environmental concern in human societies. Mercury is a toxic heavy metal that causes pollution in agricultural lands. Accumulation of Hg by plants may disru...

Journal: :Stresses 2022

Salinity and drought stress are significant environmental threats, alone or in combination. The current study was conducted to investigate the morpho-physiology, osmotic adjustment, oxidative stress, antioxidant defense methylglyoxal detoxification of three rice genotypes from indica (cv. BRRI dhan29 dhan48) japonica Koshihikari) groups. Eighteen-day-old seedlings these were exposed either sali...

2014
Chaoqun Wang Shulin Yang Ningbo Zhang Yulian Mu Hongyan Ren Yefu Wang Kui Li

There are conflicting reports on the link between the micronutrient selenium and the prevalence of diabetes. To investigate the possibility that selenium acts as a "double-edged sword" in diabetes, cDNA microarray profiling and two-dimensional differential gel electrophoresis coupled with mass spectrometry were used to determine changes in mRNA and protein expression in pancreatic and liver tis...

Journal: :Livers 2022

Oxygen is vital for life as it required many different enzymatic reactions involved in intermediate metabolism and xenobiotic biotransformation. Moreover, oxygen consumption the electron transport chain of mitochondria used to drive synthesis ATP meet energetic demands cells. However, toxic free radicals are generated byproducts molecular consumption. Oxidative stress ensues not only when produ...

Journal: :Plant physiology 2005
Shigefumi Tsukamoto Shigeto Morita Etsuko Hirano Hideki Yokoi Takehiro Masumura Kunisuke Tanaka

All organisms have defense systems against oxidative stress that include multiple genes of antioxidant defense. These genes are induced by reactive oxygen species under condition of oxidative stress. In this study, we found that a 28-bp motif is conserved on the promoter regions of three antioxidant defense genes in rice (Oryza sativa): cytosolic superoxide dismutase (sodCc1), cytosolic thiored...

2016
Ruixia Dong Dongxu Wang Xiaoxiao Wang Ke Zhang Pingping Chen Chung S. Yang Jinsong Zhang

Selenium participates in the antioxidant defense mainly through a class of selenoproteins, including thioredoxin reductase. Epigallocatechin-3-gallate (EGCG) is the most abundant and biologically active catechin in green tea. Depending upon the dose and biological systems, EGCG may function either as an antioxidant or as an inducer of antioxidant defense via its pro-oxidant action or other unid...

Journal: :Aquatic toxicology 2016
Gülüzar Atli Martin Grosell

The response of enzymatic (superoxide dismutase, SOD; catalase, CAT; glutathione peroxidase, GPX and glutathione reductase, GR) and non-enzymatic responses (glutathione, GSH, oxidized glutathione, GSSG and GSH/GSSG) against acute Cu toxicity (2-90μg/mL for 48h) in different tissues of Lymnaea stagnalis were measured. Incubation conditions for enzymatic activity measurements were optimized for L...

Journal: :Journal of integrative plant biology 2009
Beibei Xue Aying Zhang Mingyi Jiang

Using pharmacological and biochemical approaches, the role of maize polyamine oxidase (MPAO) in abscisic acid (ABA)-induced antioxidant defense in leaves of maize (Zea mays L.) plants was investigated. Exogenous ABA treatment enhanced the expression of the MPAO gene and the activities of apoplastic MPAO. Pretreatment with two different inhibitors for apoplastic MPAO partly reduced hydrogen pero...

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