β-N-Oxalyl-L-α,β-Diaminopropionic Acid Protects the Activity of Glycolate Oxidase in Lathyrus sativus Seedlings under High Light

β-N-Oxalyl-L-α,β-Diaminopropionic Acid Protects the Activity of Glycolate Oxidase in Lathyrus... The content of β-N-oxalyl-L-α,β-diaminopropionic acid (ODAP) and the activity of glycolate oxidase (GO) were positively correlated in the leaves of grass pea (Lathyrus sativus L.) seedlings. The activity of GO was kept at a steady level under the high light after treatment with ODAP. Although Na2S can activate GO, it cannot maintain the activity of GO under the high light. The content of ODAP increased and the activity of GO decreased with increasing oxalate concentration used for seedling treatment. The GO activity was high enough to keep photosynthesis at a steady level under high light. These findings suggested that Lathyrus sativus, using oxalate as a precursor to produce ODAP, protected the GO activity at high irradiance by scavenging the hydroxyl radicals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

β-N-Oxalyl-L-α,β-Diaminopropionic Acid Protects the Activity of Glycolate Oxidase in Lathyrus sativus Seedlings under High Light

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Publisher
Springer Journals
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1025631906115
Publisher site
See Article on Publisher Site

Abstract

The content of β-N-oxalyl-L-α,β-diaminopropionic acid (ODAP) and the activity of glycolate oxidase (GO) were positively correlated in the leaves of grass pea (Lathyrus sativus L.) seedlings. The activity of GO was kept at a steady level under the high light after treatment with ODAP. Although Na2S can activate GO, it cannot maintain the activity of GO under the high light. The content of ODAP increased and the activity of GO decreased with increasing oxalate concentration used for seedling treatment. The GO activity was high enough to keep photosynthesis at a steady level under high light. These findings suggested that Lathyrus sativus, using oxalate as a precursor to produce ODAP, protected the GO activity at high irradiance by scavenging the hydroxyl radicals.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 11, 2004

References

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