Cadmium Accumulation and Antioxidative Defenses in Leaves of Zea mays L.

2011 ◽  
Vol 183-185 ◽  
pp. 99-103
Author(s):  
Tong Bao ◽  
Li Na Sun ◽  
Qing Hua Xue
Keyword(s):  
Oxidative Stress ◽  
Zea Mays ◽  
Superoxide Dismutase ◽  
Zea Mays L ◽  
Enzyme System ◽  
Cadmium Accumulation ◽  
Oxidative Stress Response ◽  
Cd Stress ◽  
Hydroponic System ◽  
Antioxidant Enzyme System

Corn (Zea Mays L.) seedlings were in four cadmium (Cd) levels of 0-1mg/L in a hydroponic system to analyze the antioxidant enzyme system, Cd content in the shoots and roots and growth responces in the leaves of corn. There was a significant increase in malondialdehyde (MDA) concentration from Cd 0mg/L to 1mg/L, and peroxidase (POD) and catalase (CAT) activities in the leaves of corn subjected to 0-1mg/L Cd. However there was a significant decrease in superoxide dismutase (SOD) activities subjected to 0-1mg/L Cd. This indicated that Cd stress induced an oxidative stress response in corn seedlings, characterized by an accumulation of MDA, decrease in activities of SOD and increase in activities of POD and CAT. Root and leaf Cd contents of corn increased with their exposure Cd level, and the highest Cd concentration occurred in roots, followed by leaves.

Cadmium Accumulation and Physiological Changes in Zea mays L.

2014 ◽  
Vol 955-959 ◽  
pp. 281-284
Author(s):  
Tong Bao
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Enzyme System ◽  
Chlorophyll Concentration ◽  
Cadmium Accumulation ◽  
Oxidative Stress Response ◽  
Physiological Changes ◽  
Cd Stress ◽  
Hydroponic System ◽  
Antioxidant Enzyme System

Corn (Zea Mays L.) seedlings were in four cadmium (Cd) levels of 0-1mg/L in a hydroponic system to analyze the antioxidant enzyme system, Cd content in the shoots and roots, growth responces in the leaves of corn and phytosiderphore release. There was a significant decrease in superoxide dismutase (SOD) activities, chlorophyll concentration (Chl), shoot and root biomass and phytosiderphore release from Cd 0mg/L to 1mg/L. This indicated that Cd stress induced an oxidative stress response in corn seedlings, characterized by a decrease in activities of SOD and chl concentration. Root and shoot Cd contents of corn increased with their exposure Cd level, and the highest Cd concentration occurred in roots, followed by leaves.

scholarly journals Phytic acid prevents oxidative stress in seeds: evidence from a maize (Zea mays L.) low phytic acid mutant

2009 ◽  
Vol 60 (3) ◽  
pp. 967-978 ◽  
Author(s):  
E. Doria ◽  
L. Galleschi ◽  
L. Calucci ◽  
C. Pinzino ◽  
R. Pilu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Zea Mays ◽  
Phytic Acid ◽  
Zea Mays L ◽  
Low Phytic Acid

Alleviation of cadmium accumulation in maize (Zea mays L.) by foliar spray of zinc oxide nanoparticles and biochar to contaminated soil

2019 ◽  
Vol 248 ◽  
pp. 358-367 ◽  
Author(s):  
Muhammad Rizwan ◽  
Shafaqat Ali ◽  
Muhammad Zia ur Rehman ◽  
Muhammad Adrees ◽  
Muhammad Arshad ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zinc Oxide ◽  
Contaminated Soil ◽  
Zinc Oxide Nanoparticles ◽  
Zea Mays L ◽  
Foliar Spray ◽  
Cadmium Accumulation ◽  
Oxide Nanoparticles

Effect of diallyldisulphide on an antioxidant enzyme system in Candida species

2010 ◽  
Vol 56 (10) ◽  
pp. 816-821 ◽  
Author(s):  
Snowber Yousuf ◽  
Aijaz Ahmad ◽  
Amber Khan ◽  
Nikhat Manzoor ◽  
Luqman Ahmad Khan
Keyword(s):  
Oxidative Stress ◽  
Candida Species ◽  
Allium Sativum ◽  
Enzyme System ◽  
Antioxidant Systems ◽  
Glutathione S Transferase ◽  
Antioxidant Enzyme System ◽  
Antioxidant Metabolites ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Sublethal Concentrations

This study was carried out to show the effect of diallyldisulphide (DADS), an important organosulphur compound found in garlic ( Allium sativum ), on antioxidant systems in Candida species. Changes in antioxidant metabolites and antioxidant activity in the presence of DADS were found in Candida albicans and Candida tropicalis . Candida cells were treated with sublethal concentrations of DADS. DADS caused a decrease in the activity of all antioxidant enzymes except catalase, resulting in oxidative stress and damaged cells. The amount of oxidative stress generated by DADS was found to be a function of its concentration. A significant decrease in superoxide dismutase, glutathione-S-transferase, and glutathione peroxidase activities but an increase in catalase activity were observed. Increased levels of lipid peroxidation and decreased levels of glutathione were observed in treated cells. Activity of glucose-6-phosphate dehydrogenase decreased significantly following DADS treatment and could be correlated with a decrease in glutathione concentration in both Candida species. These results indicate that diallyl disulphide acts as a pro-oxidant to Candida species and hence may act as a potent antifungal in the management of candidiasis.

scholarly journals Gonadal Steroids Negatively Modulate Oxidative Stress in CBA/Ca Female Mice Infected withP. bergheiANKA

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Néstor Aarón Mosqueda-Romo ◽  
Ana Laura Rodríguez-Morales ◽  
Fidel Orlando Buendía-González ◽  
Margarita Aguilar-Sánchez ◽  
Jorge Morales-Montor ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Superoxide Dismutase ◽  
Sexual Dimorphism ◽  
Stress Response ◽  
Glutathione Peroxidase ◽  
Oxidative Stress Response ◽  
Gonadal Steroids ◽  
Male Mice ◽  
Female Mice

We decreased the level of gonadal steroids in female and male mice by gonadectomy. We infected these mice withP. bergheiANKA and observed the subsequent impact on the oxidative stress response. Intact females developed lower levels of parasitaemia and lost weight faster than intact males. Gonadectomised female mice displayed increased levels of parasitaemia, increased body mass, and increased anaemia compared with their male counterparts. In addition, gonadectomised females exhibited lower specific catalase, superoxide dismutase, and glutathione peroxidase activities in their blood and spleen tissues compared with gonadectomised males. To further study the oxidative stress response inP. bergheiANKA-infected gonadectomised mice, nitric oxide levels were assessed in the blood and spleen, and MDA levels were assessed in the spleen. Intact, sham-operated, and gonadectomised female mice exhibited higher levels of nitric oxide in the blood and spleen compared with male mice. MDA levels were higher in all of the female groups. Finally, gonadectomy significantly increased the oxidative stress levels in females but not in males. These data suggest that differential oxidative stress is influenced by oestrogens that may contribute to sexual dimorphism in malaria.

Oxidative stress response in eukaryotes: effect of glutathione, superoxide dismutase and catalase on adaptation to peroxide and menadione stresses inSaccharomyces cerevisiae

Redox Report ◽  
2007 ◽  
Vol 12 (5) ◽  
pp. 236-244 ◽  
Author(s):  
Patricia N. Fernandes ◽  
Sergio C. Mannarino ◽  
Carmelita G. Silva ◽  
Marcos D. Pereira ◽  
Anita D. Panek ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Stress Response ◽  
Oxidative Stress Response

scholarly journals 28-Homobrassinolide alleviates oxidative stress in salt-treated maize (Zea mays L.) plants

2008 ◽  
Vol 20 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Nitika Arora ◽  
Renu Bhardwaj ◽  
Priyanka Sharma ◽  
Hardesh K. Arora
Keyword(s):  
Oxidative Stress ◽  
Zea Mays ◽  
Zea Mays L
Sign in / Sign up

Export Citation Format

Share Document