Biomaterial Database

Ascorbate peroxidase from Jatropha curcas enhances salt tolerance in transgenic Arabidopsis. 2015

Y Chen, and J Cai, and F X Yang, and B Zhou, and L R Zhou

College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China.

Ascorbate peroxidase (APX) plays a central role in the ascorbate-glutathione cycle and is a key enzyme in cellular H2O2 me-tabolism. It includes a family of isoenzymes with different character-istics, which are identified in many higher plants. In the present study, we isolated the APX gene from Jatropha curcas L, which is similar with other previously characterized APXs as revealed by alignment and phylogenetic analysis of its deduced amino acid sequence. Real-time qPCR analysis showed that the expression level of JcAPX transcript significantly increased under NaCl stress. Subsequently, to elucidate the contribution of JcAPX to the protection against salt-induced oxi-dative stress, the expression construct p35S: JcAPX was created and transformed into Arabidopsis and transcribed. Under 150-mM NaCl stress, compared with wild type (WT), the overexpression of JcAPX in Arabidopsis increased the germination rate, the number of leaves, and the rosette area. In addition, the transgenic plants had longer roots, higher total chlorophyll content, higher total APX activity, and lower H2O2 content than the WT under NaCl stress conditions. These results suggested that higher APX activity in transgenic lines increases the salt tolerance by enhancing scavenging capacity for reactive oxygen spe-cies under NaCl stress conditions.

UI	MeSH Term	Description	Entries
D002734	Chlorophyll	Porphyrin derivatives containing magnesium that act to convert light energy in photosynthetic organisms.	Phyllobilins,Chlorophyll 740
D006861	Hydrogen Peroxide	A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials.	Hydrogen Peroxide (H2O2),Hydroperoxide,Oxydol,Perhydrol,Superoxol,Peroxide, Hydrogen
D012965	Sodium Chloride	A ubiquitous sodium salt that is commonly used to season food.	Sodium Chloride, (22)Na,Sodium Chloride, (24)NaCl
D013312	Stress, Physiological	The unfavorable effect of environmental factors (stressors) on the physiological functions of an organism. Prolonged unresolved physiological stress can affect HOMEOSTASIS of the organism, and may lead to damaging or pathological conditions.	Biotic Stress,Metabolic Stress,Physiological Stress,Abiotic Stress,Abiotic Stress Reaction,Abiotic Stress Response,Biological Stress,Metabolic Stress Response,Physiological Stress Reaction,Physiological Stress Reactivity,Physiological Stress Response,Abiotic Stress Reactions,Abiotic Stress Responses,Abiotic Stresses,Biological Stresses,Biotic Stresses,Metabolic Stress Responses,Metabolic Stresses,Physiological Stress Reactions,Physiological Stress Responses,Physiological Stresses,Reaction, Abiotic Stress,Reactions, Abiotic Stress,Response, Abiotic Stress,Response, Metabolic Stress,Stress Reaction, Physiological,Stress Response, Metabolic,Stress Response, Physiological,Stress, Abiotic,Stress, Biological,Stress, Biotic,Stress, Metabolic
D017360	Arabidopsis	A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.	Arabidopsis thaliana,Cress, Mouse-ear,A. thaliana,A. thalianas,Arabidopses,Arabidopsis thalianas,Cress, Mouse ear,Cresses, Mouse-ear,Mouse-ear Cress,Mouse-ear Cresses,thaliana, A.,thaliana, Arabidopsis,thalianas, A.
D055049	Salt Tolerance	The ability of organisms to sense and adapt to high concentrations of salt in their growth environment.	Salt-Tolerance,Saline-Tolerance,Salinity Tolerance,Salt Adaptation,Salt Adaption,Salt-Adaption,Adaptation, Salt,Adaption, Salt,Saline Tolerance,Salinity Tolerances,Salt Adaptations,Salt Adaptions,Salt Tolerances,Tolerance, Salinity,Tolerance, Salt
D060387	Ascorbate Peroxidases	Peroxidases that utilize ASCORBIC ACID as an electron donor to reduce HYDROGEN PEROXIDE to WATER. The reaction results in the production of monodehydroascorbic acid and DEHYDROASCORBIC ACID.	Ascorbate Peroxidase,L-Ascorbic Acid Peroxidase,Acid Peroxidase, L-Ascorbic,L Ascorbic Acid Peroxidase,Peroxidase, Ascorbate,Peroxidase, L-Ascorbic Acid,Peroxidases, Ascorbate
D018506	Gene Expression Regulation, Plant	Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in plants.	Plant Gene Expression Regulation,Regulation of Gene Expression, Plant,Regulation, Gene Expression, Plant
D030821	Plants, Genetically Modified	PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.	Genetically Modified Plants,Plants, Transgenic,Transgenic Plants,GMO Plants,Genetically Engineered Plants,Engineered Plant, Genetically,Engineered Plants, Genetically,GMO Plant,Genetically Engineered Plant,Genetically Modified Plant,Modified Plant, Genetically,Modified Plants, Genetically,Plant, GMO,Plant, Genetically Engineered,Plant, Genetically Modified,Plant, Transgenic,Plants, GMO,Plants, Genetically Engineered,Transgenic Plant
D031286	Jatropha	A plant genus of the family EUPHORBIACEAE. Members contain jatrophone and other diterpenes.	Nettlespurge,Spurge, Nettle,Jatropha curcas,Physic Nut,Purging Nut,Nettle Spurge,Nettle Spurges,Nettlespurges,Nut, Physic,Nut, Purging,Nuts, Physic,Nuts, Purging,Physic Nuts,Purging Nuts,Spurges, Nettle