pyrroline/arabidopsis thaliana

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Osmoregulation of a pyrroline-5-carboxylate reductase gene in Arabidopsis thaliana.

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In Arabidopsis thaliana (L.) Heynh. proline can account for up to 20% of the free amino acid pool after salt stress. Proline accumulation occurs in plants mainly by de novo synthesis from glutamate. The last step of the proline biosynthetic pathway is catalyzed by pyrroline-5-carboxylate (P5C)

A 69 bp fragment in the pyrroline-5-carboxylate reductase promoter of Arabidopsis thaliana activates minimal CaMV 35S promoter in a tissue-specific manner.

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The Arabidopsis thaliana gene that encodes pyrroline-5-carboxylate reductase (At-P5R), the last enzyme in proline biosynthesis in A. thaliana, is developmentally regulated and is highly expressed in cells that divide rapidly or undergo changes in osmotic potential. A 69 bp region (P69; -120 to -51)

Isolation, characterization, and chromosomal location of a gene encoding the delta 1-pyrroline-5-carboxylate synthetase in Arabidopsis thaliana.

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A full-length cDNA and the corresponding At-P5S gene encoding the first enzyme of the proline biosynthetic pathway, the delta 1-pyrroline-5-carboxylate (P5C) synthetase, were isolated in Arabidopsis thaliana. The At-P5S cDNA encodes a protein of 717 amino acids showing high identity with the P5C

Correlation between the induction of a gene for delta 1-pyrroline-5-carboxylate synthetase and the accumulation of proline in Arabidopsis thaliana under osmotic stress.

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The isolation and characterization is reported of a cDNA for delta 1-pyrroline-5-carboxylate (P5C) synthetase (cAtP5CS), an enzyme involved in the biosynthesis of proline, from a cDNA library prepared from a dehydrated rosette plant of Arabidopsis thaliana. Southern blot analysis suggested that only

Stress-responsive and developmental regulation of Delta(1)-pyrroline-5-carboxylate synthetase 1 (P5CS1) gene expression in Arabidopsis thaliana.

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Delta(1)-Pyrroline-5-carboxylate synthetase 1 (P5CS1) is the rate-limiting enzyme in the biosynthesis of proline by Arabidopsis thaliana. Results of Northern analysis using aba1, abi1, and abi3 mutants of A. thaliana suggest that the expression of the P5CS1 gene under water stress is induced via

Δ1-Pyrroline-5-carboxylate reductase from Arabidopsis thaliana: stimulation or inhibition by chloride ions and feedback regulation by proline depend on whether NADPH or NADH acts as co-substrate.

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Δ(1)-pyrroline-5-carboxylate (P5C) reductase (P5CR) catalyses the final step of proline synthesis in plants. In Arabidopsis thaliana, protein levels are correlated neither to the corresponding mRNA copy numbers, nor to intracellular proline concentrations. The occurrence of post-translational

Transcriptome changes in Arabidopsis thaliana infected with Pseudomonas syringae during drought recovery.

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Field-grown plants experience cycles of drought stress and recovery due to variation in soil moisture status. Physiological, biochemical and transcriptome responses instigated by recovery are expected to be different from drought stress and non-stressed state. Such responses can further aid or

SELENOPROTEIN O is a chloroplast protein involved in ROS scavenging and its absence increases dehydration tolerance in Arabidopsis thaliana.

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The evolutionary conserved family of Selenoproteins performs redox-regulatory functions in bacteria, archaea and eukaryotes. Among them, members of the SELENOPROTEIN O (SELO) subfamily are located in mammalian and yeast mitochondria, but their functions are thus far enigmatic. Screening of T-DNA

Synthesis and evaluation of effective inhibitors of plant δ1-pyrroline-5-carboxylate reductase.

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Analogues of previously studied phenyl-substituted aminomethylene-bisphosphonic acids were synthesized and evaluated as inhibitors of Arabidopsis thaliana δ(1)-pyrroline-5-carboxylate reductase. With the aim of improving their effectiveness, two main modifications were introduced into the inhibitory

[Evaluation of Salt Tolerance of Transgenic Tobacco Plants Bearing with P5CS1 Gene of Arabidopsis thaliana].

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Arabidopsis thaliana delta1-pyrroline-5-carhoxylate synthase 1 gene (P5CS1) cDNA was cloned under the control of the potent constitutive 35S RNA promoter of the cauliflower mosaic virus and transferred into genome of tobacco cv. Petit Havana SR-1 (Nicotiana tabacum L.) plants. It is shown that the

Potential retroviruses in plants: Tat1 is related to a group of Arabidopsis thaliana Ty3/gypsy retrotransposons that encode envelope-like proteins.

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Tat1 was originally identified as an insertion near the Arabidopsis thaliana SAM1 gene. We provide evidence that Tat1 is a retrotransposon and that previously described insertions are solo long terminal repeats (LTRs) left behind after the deletion of coding regions of full-length elements. Three

Isolation and characterization of two different cDNAs of delta1-pyrroline-5-carboxylate synthase in alfalfa, transcriptionally induced upon salt stress.

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Two different cDNA clones, MsP5CS-1 and MsP5CS-2, encoding delta1 -pyrroline-5-carboxylate synthase (P5CS). the first enzyme of the proline biosynthetic pathway, were isolated from a lambdaZap-cDNA library constructed from salt stressed Medicago sativa roots. MsP5CS-1 (2.6 kb) has an open reading

Isolation of the ornithine-delta-aminotransferase cDNA and effect of salt stress on its expression in Arabidopsis thaliana.

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To evaluate the relative importance of ornithine (Orn) as a precursor in proline (Pro) synthesis, we isolated and sequenced a cDNA encoding the Orn-delta-aminotransferase (delta-OAT) from Arabidopsis thaliana. The deduced amino acid sequence showed high homology with bacterial, yeast, mammalian, and

An Ancestral Allele of Pyrroline-5-carboxylate synthase1 Promotes Proline Accumulation and Drought Adaptation in Cultivated Barley.

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Water scarcity is a critical threat to global crop production. Here, we used the natural diversity of barley (Hordeum vulgare) to dissect the genetic control of proline (Pro) mediated drought stress adaptation. Genetic mapping and positional cloning of a major drought-inducible quantitative trait

Characterization of the gene for delta1-pyrroline-5-carboxylate synthetase and correlation between the expression of the gene and salt tolerance in Oryza sativa L.

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A cDNA for delta1-pyrroline-5-carboxylate (P5C) synthetase (cOsP5CS), an enzyme involved in the biosynthesis of proline, was isolated and characterized from a cDNA library prepared from 14-day-old seedlings of Oryza sativa cv. Akibare. The deduced amino acid sequence of the P5CS protein (OsP5CS)

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