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Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions
The generation, sites of production and role of ROS as messenger molecules as well as inducers of oxidative damage are described and the antioxidative defense mechanisms operating in the cells for scavenging of ROS overproduced under various stressful conditions of the environment are described. Expand
Lead toxicity in plants
A contaminacao de solos por metais pesados e de ocorrencia generalizada como resultado das atividades humana, agricola e industrial. Entre os metais pesados, o chumbo (Pb) e um poluente potencialExpand
Involvement of oxidative stress and role of antioxidative defense system in growing rice seedlings exposed to toxic concentrations of aluminum
The results suggest that Al3+ toxicity is associated with induction of oxidative stress in rice plants and among antioxidative enzymes SOD, Guaiacol POX and cytosolic APX appear to serve as important components of an antioxidative defense mechanism under Al 3+ toxicity. Expand
Drought Induces Oxidative Stress and Enhances the Activities of Antioxidant Enzymes in Growing Rice Seedlings
When rice seedlings grown for 10 and 20 days were subjected to in vitro drought stress of −0.5 and −2.0 MPa for 24 h, an increase in the concentration of superoxide anion (O2.−), increased level ofExpand
Modulation of nitrate reductase activity in rice seedlings under aluminium toxicity and water stress: role of osmolytes as enzyme protectant.
Results suggest that Al toxicity and water stress decrease total amount of functional NR in rice seedlings and the osmolytes proline, glycine betaine and sucrose appear to have a direct protective action on enzyme NR under stressful conditions. Expand
Medicinal plant diversity of Sitamata wildlife sanctuary, Rajasthan, India.
The study revealed the new ethnobotanical uses of 24 plant species belonging to 20 genera and list of plant species along with their local name, plant part/s used and mode of administration for effective control in different ailments of ethnomedicinal plants are given. Expand
Differential response of arsenic stress in two varieties of Brassica juncea L.
The data presented indicates the differential responses in both the varieties and also that the increased tolerance in P. Bold may be due to the defensive role of antioxidant enzymes, induction of MAPK and up regulation of PCS transcript which is responsible for the production of metal binding peptides. Expand
Ascorbate peroxidase from rice seedlings: properties of enzyme isoforms, effects of stresses and protective roles of osmolytes
Ascorbate peroxidase in rice seedlings appears to have an important role in detoxification of H 2 O 2 under abiotic stressful conditions and Glycine betaine appeared to be an effective protectant for both isoforms under in vitro water stressed conditions. Expand
Catalase and ascorbate peroxidase—representative H2O2-detoxifying heme enzymes in plants
This paper aims to introduce oxidative stress-causative factors and highlights their relationship with abiotic stresses in plants, and to overview structure, occurrence, and significance of CAT and APX in plants. Expand
Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress.
Cloning of five MAP kinase kinase members from Oryza sativa indica cultivar var. Expand