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| Titel: |
Enhancement of nitrate uptake and reduction by treatment with mixed amino acids in red pepper (Capsicum annuum L.) |
| Auteur: |
Liu, Xing-Quan Ko, Kwang-Yong Kim, Sung-Hun Lee, Kyu-Seung |
| Verschenen in: |
Acta agriculturae Scandinavica. Section B, Soil and plant science |
| Paginering: | Jaargang 57 (2007) nr. 2 pagina's 167-172 |
| Jaar: |
2007 |
| Inhoud: |
The objective of the present work was to determine the corresponding uptake and assimilation of [image omitted] in roots and leaves by the application of mixed amino acids in red pepper. The amino acids used in this experiment were alanine, β-alanine, aspartic acid, asparagines, glutamic acid, glutamine, and glycine. The 42-day-old seedlings were treated with 0, 0.3, and 3.0 mM of mixed amino acids containing 10 mM [image omitted] in growth medium. Nitrate uptake was determined by following [image omitted] depletion from the uptake solution. The activity of the enzymes related to the process of [image omitted] reduction and the content of [image omitted] , [image omitted] , and the end-products of this process (amino acids and proteins) were analyzsed in leaves and roots. The results of this study indicate that the application of mixed amino acids increased [image omitted] uptake in red pepper, and the highest [image omitted] uptake was found in the treatment with 3.0 mM mixed amino acids that was nearly seven times higher than the control. In addition, the enzymatic activities of nitrate reductase and nitrite reductase were positively affected by the treatments of mixed amino acids in the roots. The results presented here are in contrast to recent studies, which have shown that the single amino acid treatments inhibited [image omitted] uptake and nitrate reductase activity. Finally, the [image omitted] content was decreased both in leaves and roots by the mixed amino acids treatments. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 13 gevonden artikelen
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