Bangia fuscopurpurea is a widespread intertidal seaweed that commercially cultured in China. This frequently exposed to hyposalinity stress, but little known about the adaptation mechanisms. Ascorbate−glutathione (AsA−GSH) cycle plays important roles many organisms under variety of abiotic including hyposaline stress. In this study, we investigated response key metabolites and enzymes involved ...

Iron nanoparticles (Fe NPs) have a wide array of biological and medical applications. In agriculture, Fe NPs has the potential to be used as an innovative technique alleviate deficiency in various crops, such grape. However, effect on alleviating stresses grapevine are unexplored. The aim this study was evaluate efficiency protecting ‘Asgari’ seedless grape (Vitis vinifera L.) against oxidative...

As an important antioxidant for plants and humans, L-ascorbic acid (AsA, vitamin C) can scavenge reactive oxygen species (ROS) and can be regenerated from its oxidized form in a reaction catalyzed by dehydroascorbate reductase (DHAR). To analyse the effect of overexpressing DHAR on tomato (Solanum lycopersicum), an expression vector containing potato cytosolic DHAR (DHAR1) or chloroplastic DHAR...

Abstract Developing and applying a novel plant growth–promoting agent (PGPA; micronutrient-amino acid chelated compound developed from autolysis yeast cells) in alleviating salt stress toxicity can be the best alternative option environmentally economically. High-performance liquid chromatography (HPLC) showed that assembled PGPA is rich nucleobases than extract (> 56-fold). This study, as f...

L-gulono-γ-lactone oxidase (Gulo) catalyzes the last step of ascorbic acid biosynthesis, which occurs in the kidney of elasmobranchs. This study aimed to clone and sequence gulonolactone oxidase (gulo) from the kidney of the euryhaline freshwater stingray, Himantura signifer, and to determine the effects of acclimation from freshwater to brackish water (salinity 20) on its renal gulo mRNA expre...

All tested cells possess transplasma membrane electron transfer (tPMET) systems that are capable of reducing extracellular electron acceptors at the cost of cytosolic electron donors. In mammals, classically NAD(P)H- and NADH-dependent systems have been distinguished. The NADH-dependent system has been suggested to be involved in non-transferrin-bound iron (NTBI) reduction and uptake. Recently ...

The effects of growth irradiance and respiration on ascorbic acid (AA) synthesis and accumulation were studied in the leaves of wild-type and transformed Arabidopsis thaliana with modified amounts of the mitochondrial alternative oxidase (AOX) protein. Plants were grown under low (LL; 50 micromol photons m(-2) s(-1)), intermediate (IL; 100 micromol photons m(-2) s(-1)), or high (HL; 250 micromo...