Root exudation of phytosiderophores from soil-grown wheat

Root exudation of phytosiderophores from soil-grown wheat

© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 203(2014), 4 vom: 02. Sept., Seite 1161-1174
1. Verfasser: Oburger, Eva (VerfasserIn)
Weitere Verfasser: Gruber, Barbara, Schindlegger, Yvonne, Schenkeveld, Walter D C, Hann, Stephan, Kraemer, Stephan M, Wenzel, Walter W, Puschenreiter, Markus
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't 2′-deoxymugineic acid (DMA) Triticum aestivum cv Tamaro iron deficiency phytosiderophore rhizosphere strategy II trace elements Plant Exudates mehr... Siderophores Soil Solutions Water 059QF0KO0R Azetidinecarboxylic Acid 5GZ3E0L9ZU 2'-deoxymugineic acid 74235-24-8 Carbon 7440-44-0 Copper 789U1901C5 Iron E1UOL152H7 Zinc J41CSQ7QDS
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520 |a For the first time, phytosiderophore (PS) release of wheat (Triticum aestivum cv Tamaro) grown on a calcareous soil was repeatedly and nondestructively sampled using rhizoboxes combined with a recently developed root exudate collecting tool. As in nutrient solution culture, we observed a distinct diurnal release rhythm; however, the measured PS efflux was c. 50 times lower than PS exudation from the same cultivar grown in zero iron (Fe)-hydroponic culture. Phytosiderophore rhizosphere soil solution concentrations and PS release of the Tamaro cultivar were soil-dependent, suggesting complex interactions of soil characteristics (salinity, trace metal availability) and the physiological status of the plant and the related regulation (amount and timing) of PS release. Our results demonstrate that carbon and energy investment into Fe acquisition under natural growth conditions is significantly smaller than previously derived from zero Fe-hydroponic studies. Based on experimental data, we calculated that during the investigated period (21-47 d after germination), PS release initially exceeded Fe plant uptake 10-fold, but significantly declined after c. 5 wk after germination. Phytosiderophore exudation observed under natural growth conditions is a prerequisite for a more accurate and realistic assessment of Fe mobilization processes in the rhizosphere using both experimental and modeling approaches 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a 2′-deoxymugineic acid (DMA) 
650 4 |a Triticum aestivum cv Tamaro 
650 4 |a iron deficiency 
650 4 |a phytosiderophore 
650 4 |a rhizosphere 
650 4 |a strategy II 
650 4 |a trace elements 
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650 7 |a 74235-24-8  |2 NLM 
650 7 |a Carbon  |2 NLM 
650 7 |a 7440-44-0  |2 NLM 
650 7 |a Copper  |2 NLM 
650 7 |a 789U1901C5  |2 NLM 
650 7 |a Iron  |2 NLM 
650 7 |a E1UOL152H7  |2 NLM 
650 7 |a Zinc  |2 NLM 
650 7 |a J41CSQ7QDS  |2 NLM 
700 1 |a Gruber, Barbara  |e verfasserin  |4 aut 
700 1 |a Schindlegger, Yvonne  |e verfasserin  |4 aut 
700 1 |a Schenkeveld, Walter D C  |e verfasserin  |4 aut 
700 1 |a Hann, Stephan  |e verfasserin  |4 aut 
700 1 |a Kraemer, Stephan M  |e verfasserin  |4 aut 
700 1 |a Wenzel, Walter W  |e verfasserin  |4 aut 
700 1 |a Puschenreiter, Markus  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t The New phytologist  |d 1979  |g 203(2014), 4 vom: 02. Sept., Seite 1161-1174  |w (DE-627)NLM09818248X  |x 1469-8137  |7 nnns 
773 1 8 |g volume:203  |g year:2014  |g number:4  |g day:02  |g month:09  |g pages:1161-1174 
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