Centelloside accumulation in leaves of Centella asiatica is determined by resource partitioning between primary and secondary metabolism while influenced by supply levels of either nitrogen, phosphorus or potassium

Centelloside accumulation in leaves of Centella asiatica is determined by resource partitioning between primary and secondary metabolism while influenced by supply levels of either nitrogen, phosphorus or potassium

Copyright © 2013 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 170(2013), 13 vom: 01. Sept., Seite 1165-75
1. Verfasser: Müller, Viola (VerfasserIn)
Weitere Verfasser: Lankes, Christa, Zimmermann, Benno F, Noga, Georg, Hunsche, Mauricio
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Asiaticoside CNB DM ESI-MS GDB Glu HPLC HY mehr... K LY N Nutrient OPPP P PAR Photosynthesis Pn Rha Saponin Trade-off WTA assimilation rate carbon/nutrient balance hypothesis dry mass electrospray ionization-mass spectrometry glucose growth differentiation balance hypothesis herb yield high-performance liquid chromatography leaf yield nitrogen oxidative pentose phosphate pathway phosphorus photosynthetic active radiation potassium rhamnose weeks of treatment application Glycosides Minerals Sapogenins Saponins Soil Triterpenes Phosphorus 27YLU75U4W Nitrogen N762921K75 Potassium RWP5GA015D
Beschreibung
Zusammenfassung:Copyright © 2013 Elsevier GmbH. All rights reserved.
In the present study we aimed to investigate the relevance of either N, P or K supply for herb and leaf yield and for centelloside concentrations in Centella asiatica L. Urban leaves. In this regard, we elucidated the causal relationship between assimilation rate, leaf N, P and K concentrations, herb and leaf production, and centelloside accumulation. The experiments were conducted consecutively in a greenhouse where C. asiatica was grown in hydroponic culture and fertigated with nutrient solutions at either 0, 30, 60, 100 or 150% of the N, P or K amount in a standard Hoagland solution. In general, the increase in N, P or K supply enhanced assimilation rate and herb and leaf yield. However, exceeding specific thresholds, the high availability of one single nutrient caused lower leaf N concentrations and a decline in assimilation rate and plant growth. Irrespective of N, P and K supply, the leaf centelloside concentrations were negatively associated with herb and leaf yield, which is in accordance with the assumptions of the carbon/nutrient balance and the growth differentiation balance hypotheses. Moreover, we found strong negative correlations between saponins and leaf N concentrations, while the respective sapogenins were negatively correlated with K concentrations. Using C. asiatica as model system, our experiments reveal for the first time that the accumulation of saponins and sapogenins is affected by resource allocation between primary and secondary metabolism and that besides carbon, also nutrient availability is relevant for the regulation of the centelloside synthesis. Finally, our results highlight the huge potential of optimized and carefully controlled mineral nutrition of medicinal plants for steering the bio-production of high-quality natural products
Beschreibung:Date Completed 03.03.2014
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1618-1328
DOI:10.1016/j.jplph.2013.03.010