vigna/proline

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Proline biosynthesis in Streptococcus thermophilus: characterization of the proBA operon and its products.

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The presence of proline in the medium was not essential for growth of Streptococcus thermophilus, indicating that there is a proline biosynthetic pathway in this organism. Genetic and biochemical analysis identified and characterized this pathway. Two genes, designated proB and proA, were cloned,

Biochemical characterization, homology modeling and docking studies of ornithine delta-aminotransferase--an important enzyme in proline biosynthesis of plants.

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Ornithine delta-aminotransferase (OAT) is an important enzyme in proline biosynthetic pathway and is implicated in salt tolerance in higher plants. OAT transaminates ornithine to pyrroline 5-carboxylate, which is further catalyzed to proline by pyrroline 5-carboxylate reductase. The Vigna

Biochemical composition of symplastic sap from sugarcane genetically modified to overproduce proline.

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Global interest in sugarcane has increased significantly in recent years because of its economic impact on sustainable energy production. The purpose of the present study was to evaluate changes in the concentrations of total sugars, amino acids, free proline, and total proteins by colorimetric

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-induced synthesis of proline confers tolerance to water deficit in transgenic wheat.

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Water deficit is one of the main abiotic factors that affect spring wheat planted in subtropical regions. Accumulation of proline appears to be a promising approach to maintain the productivity of plants under stress condition. However, morphological alterations and growth reduction are observed in

Variation in relative water content, proline accumulation and stress gene expression in two cowpea landraces under drought.

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Many landraces of cowpea [Vigna unguiculata (L.) Walp.] are adapted to particular geographical and climatic conditions. Here we describe two landraces grown respectively in arid and temperate areas of Algeria and assess their physiological and molecular responses to drought stress. As expected, when

Removal of feedback inhibition of delta 1-pyrroline-5-carboxylate synthetase, a bifunctional enzyme catalyzing the first two steps of proline biosynthesis in plants.

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delta 1-Pyrroline-5-carboxylate synthetase (P5CS) catalyzes the first two steps in proline biosynthesis in plants. The Vigna aconitifolia P5CS cDNA was expressed in Escherichia coli, and the enzyme was purified to homogeneity. The Vigna P5CS exhibited two activities, gamma-glutamyl kinase (gamma-GK)

A bifunctional enzyme (delta 1-pyrroline-5-carboxylate synthetase) catalyzes the first two steps in proline biosynthesis in plants.

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Many plants synthesize and accumulate proline in response to osmotic stress. Despite the importance of this pathway, however, the exact metabolic route and enzymes involved in the synthesis of proline in plants have not been unequivocally identified. We report here the isolation of a mothbean (Vigna

Removal of feedback inhibition of delta(1)-pyrroline-5-carboxylate synthetase results in increased proline accumulation and protection of plants from osmotic stress.

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The Delta(1)-pyrroline-5-carboxylate synthetase (P5CS; EC not assigned) is the rate-limiting enzyme in proline (Pro) biosynthesis in plants and is subject to feedback inhibition by Pro. It has been suggested that the feedback regulation of P5CS is lost in plants under stress conditions. We compared

Transgenic Medicago truncatula plants that accumulate proline display nitrogen-fixing activity with enhanced tolerance to osmotic stress.

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Legume root nodule nitrogen-fixing activity is severely affected by osmotic stress. Proline accumulation has been shown to induce tolerance to salt stress, and transgenic plants over-expressing Delta(1)-pyrroline-5-carboxylate synthetase (P5CS), which accumulates high levels of proline, display

Cloning of ornithine delta-aminotransferase cDNA from Vigna aconitifolia by trans-complementation in Escherichia coli and regulation of proline biosynthesis.

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Proline prototrophy was restored to an Escherichia coli proBA proline auxotroph by ornithine and a mothbean (Vigna aconitifolia) cDNA expression library. This novel strategy, "trans-complementation," allowed isolation of a cDNA encoding ornithine delta-aminotransferase (delta-OAT). This enzyme

The kinetics of inhibition of Vigna catjang cotyledon and buffalo liver arginase by L-proline and branched-chain amino acids.

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The effect of proline, isoleucine, leucine, valine, lysine and ornithine under standard physiological conditions, on purified Vigna catjang cotyledon and buffalo liver arginases was studied. The results showed that V. catjang cotyledon arginase is inhibited by proline at a lower concentration than

Boiling influences the nutritional value of three seed cowpea (Vigna unguiculata) varieties using in vivo and in vitro methods.

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This study aimed to evaluate the effect of boiling seeds of three cowpea (Vigna unguiculata) varieties on nutrient ileal and total tract digestibilities in rats and in vitro hindgut production of short-chain fatty acids (SCFAs). Boiling influenced nutrient ileal and total tract digestibilities, and

NaCl Effects on In Vitro Germination and Growth of Some Senegalese Cowpea (Vigna unguiculata (L.) Walp.) Cultivars.

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Cowpea (Vigna unguiculata (L.) Walp.) is one of the most important grain legumes in sub-Saharian regions. It contributes to man food security by providing a protein-rich diet. However, its production is limited by abiotic stresses such as salinity. This study aims to evaluate the salt tolerance of

Inoculation with Indole-3-acetic acid producing rhizospheric Rhodobacter sphaeroides KE149 augments the growth of adzuki bean plants under water stress.

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The use of plant growth-promoting rhizobacteria is economically viable and environmentally safe for mitigating various plant stresses. Abiotic stresses such as flood and drought are a serious threat to present day agriculture. In the present study, the indole-3-acetic acid-producing rhizobacterium

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