Allelochemical L-DOPA induces quinoprotein adducts and inhibits NADH dehydrogenase activity and root growth of cucumber
Copyright © 2013 Elsevier Masson SAS. All rights reserved.
| Veröffentlicht in: | Plant physiology and biochemistry : PPB. - 1991. - 70(2013) vom: 18. Sept., Seite 374-8 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2013
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| Zugriff auf das übergeordnete Werk: | Plant physiology and biochemistry : PPB |
| Schlagworte: | Journal Article Allelopathy Melanin Mitochondrial respiration Quinoprotein Thiol l-DOPA Melanins Pheromones Plant Proteins mehr... |
| Zusammenfassung: | Copyright © 2013 Elsevier Masson SAS. All rights reserved. Allelochemical L-DOPA (l-3,4-dihydroxyphenylalanine) inhibits growth of several plant species. However, its mode of action is not well clarified in plants. The present studies were conducted to explore the action mechanism of L-DOPA in cucumber roots. The results revealed that L-DOPA suppressed the root growth of cucumber and induced quinoprotein and melanin formation in the roots. Moreover, L-DOPA not only decreased mitochondrial viability and NADH dehydrogenase (complex I) activity but also increased quinoprotein formation in vitro in isolated mitochondria from cucumber roots. Strong correlations were observed between quinoprotein formation and root growth inhibition, quinoprotein formation and NADH dehydrogenase activity, after L-DOPA treatment. The results suggest that quinoprotein formation and mitochondrial impairment might be involved in growth-inhibition mechanism of L-DOPA in cucumber roots |
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| Beschreibung: | Date Completed 13.02.2014 Date Revised 17.10.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2013.06.003 |