ScholarLens Back to search
2009•Chih Wu Sheng Li Hsueh T'ung HsunRequires access

Effects of Nitric Oxide on Proline Accumulation and Metabolic Pathways in Maize (Zea mays L.) Seedlings

Shuang Yang

Open publisher page 1 citations

Abstract

Treatment with the NO donor sodium nitroprusside (SNP) could lead to a significant accumulation of proline, a rapid increase of the activity of the key enzyme ornithine-δ-aminotransferase (OAT) of proline biosynthesis, and a decrease of the activity of the key enzyme proline dehydrogenase (ProDH) of proline degradation in maize (Zea mays) seedlings. Whereas treatment with the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) exhibited contrary results to the SNP treatment. In addition, both SNP and c-PTIO treatments had little effect on △1-pyrroline-5-carboxylate synthetase (P5CS) activity. These results showed that the NO-induced proline accumulation in the maize seedlings might be a combined result of the activation of ornithine pathways of proline biosynthesis and inhibition of proline degradation pathway.

About this research paper

What this paper is about

Treatment with the NO donor sodium nitroprusside (SNP) could lead to a significant accumulation of proline, a rapid increase of the activity of the key enzyme ornithine-δ-aminotransferase (OAT) of proline biosynthesis, and a decrease of the activity of the key enzyme proline dehydrogenase (ProDH) of proline degradation in maize (Zea mays) seedlings. Whereas treatment with the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) exhibited contrary results to the SNP treatment. In addition, both SNP and c-PTIO treatments had little effect on △1-pyrroline-5-carboxylate synthetase (P5CS) activity. These results showed that the NO-induced proline accumulation in the maize seedlings might be a combined result of the activation of ornithine pathways of proline biosynthesis and inhibition of proline degradation pathway.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Treatment with the NO donor sodium nitroprusside (SNP) could lead to a significant accumulation of proline, a rapid increase of the activity of the key enzyme ornithine-δ-aminotransferase (OAT) of proline biosynthesis, and a decrease of the activity of the key enzyme proline dehydrogenase (ProDH) of proline degradation in maize (Zea mays) seedlings. Whereas treatment with the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) exhibited contrary results to the SNP treatment. In addition, both SNP and c-PTIO treatments had little effect on △1-pyrroline-5-carboxylate synthetase (P5CS) activity. These results showed that the NO-induced proline accumulation in the maize seedlings might be a combined result of the activation of ornithine pathways of proline biosynthesis and inhibition of proline degradation pathway.

Key concepts: Proline dehydrogenase, Proline, Ornithine, Ornithine aminotransferase, Biochemistry, Sodium nitroprusside, Arginine, Nitric oxide

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Effects of Nitric Oxide on Proline Accumulation and Metabolic Pathways in Maize (Zea mays L.) Seedlings — Research Paper | ScholarLens