Physiological, metabolic, and genetic changes produced by two plant growth promoting rhizobacteria (PGPR) Pseudomonas sp. (internal code of the laboratory: N 5.12 21.24) inoculated in tomato plants subjected to moderate water stress (10% polyethylene glycol-6000; PEG) were studied. Photosynthesis efficiency, photosynthetic pigments, compatible osmolytes, reactive oxygen species (ROS) scavenging...

Polyphenol oxidase(PPO) (E.C. number 1.10.3.1) has ubiquitous distribution in almost all living organism. Whereas, peroxidase(POD) (E.C. number 1.11.1) act as hormone regulation and defense mechanism in plants. Keeping in pace with their present-day industrial application, efforts have been made to evaluate the activity of these two enzymes (PPO and POD) using pepper pericarp (Capsicum annuum L...

the production of reactive oxygen species (ros) in plants under low temperature stress cause damage to plants. in order to evaluate of antioxidant responses of page mandarin young trees (two years old) on different rootstocks under low temperatures, an experiment was conducted in a factorial plan based on completely randomized design. treatment of temperatures were at seven levels include 9, 6,...

Abstract This work aimed to investigate the interaction between salt stress and application of silicon dioxide-nanoparticles. In this study, gerbera plants grown in soilless culture were supplied with nutrient solutions different NaCl concentrations (0, 5, 10, 20 30 mM) combination SiO 2 -NPs spray 25 50 mg · L −1 ). Exposure salinity increased sodium concentration but decreased potassium calci...

Barium (Ba) is a nonessential element that can cause several deleterious effects in most organisms. Elevated Ba concentrations be toxic for plants and may affect growth disturbances homeostasis. This study aimed to evaluate the stress, plant-tolerance limits, detoxification strategy adopted by Cucumis sativus L. The effect of on seed's germination vegetative development this species was evaluat...

Ascorbate peroxidases are haem proteins that efficiently scavenge H2O2 in the cytosol and chloroplasts of plants. Database analyses retrieved 52 expressed sequence tags coding for Arabidopsis thaliana ascorbate peroxidases. Complete sequencing of non-redundant clones revealed three novel types in addition to the two cytosol types described previously in Arabidopsis. Analysis of sequence data av...

Arsenic uptake by plants is species-specific and its level in terrestrial of uncontaminated sites ranged from 0.009 to 1.5 mg/kg. Plants with high metal or metalloid capability their biomass are called hyperaccumulators. The most efficient arsenic (As) hyperaccumulator belongs Pteridaceae species Pteris vittata L. Pityrogramma calomelanos L., both can accumulate more than 8000 mg/kg As above-gr...

Background. The technogenic pollution leads to excessive production of reactive oxygen species (ROS) in plants which are highly and toxic cause damage biomolecules. Plants have a complex antioxidant defense system that protects cells from the ROS maintain homeostasis. most important link this is enzymes, particular, peroxidase. It was interest determine expression protective properties one sens...

o investigate the role of selenomethionine (SeMet) in regulating drought tolerance strawberry plants, we explored effects SeMet on antioxidative enzymes, water physiology and fruit quality plants under stress (DS). In this study, used variety ‘Sweet Charlie’ as material investigated through foliar spraying pot experiments. The results showed that DS obviously enhanced activities antioxidant enz...