Response to copper excess in Arabidopsis thaliana Impact on the root system architecture, hormone distribution, lignin accumulation and mineral profile

Response to copper excess in Arabidopsis thaliana : Impact on the root system architecture, hormone distribution, lignin accumulation and mineral profile

Copyright 2010 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 48(2010), 8 vom: 15. Aug., Seite 673-82
1. Verfasser: Lequeux, Hélène (VerfasserIn)
Weitere Verfasser: Hermans, Christian, Lutts, Stanley, Verbruggen, Nathalie
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Ethylenes Minerals Plant Growth Regulators Phosphorus 27YLU75U4W Manganese 42Z2K6ZL8P Sulfur mehr... 70FD1KFU70 Copper 789U1901C5 Lignin 9005-53-2 ethylene 91GW059KN7 Iron E1UOL152H7 Magnesium I38ZP9992A Zinc J41CSQ7QDS Potassium RWP5GA015D Calcium SY7Q814VUP
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100 1 |a Lequeux, Hélène  |e verfasserin  |4 aut 
245 1 0 |a Response to copper excess in Arabidopsis thaliana  |b Impact on the root system architecture, hormone distribution, lignin accumulation and mineral profile 
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500 |a Date Completed 15.11.2010 
500 |a Date Revised 08.04.2022 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Copyright 2010 Elsevier Masson SAS. All rights reserved. 
520 |a Growth, in particular reorganization of the root system architecture, mineral homeostasis and root hormone distribution were studied in Arabidopsis thaliana upon copper excess. Five-week-old Arabidopsis plants growing in hydroponics were exposed to different Cu(2+) concentrations (up to 5 muM). Root biomass was more severely inhibited than shoot biomass and Cu was mainly retained in roots. Cu(2+) excess also induced important changes in the ionome. In roots, Mg, Ca, Fe and Zn concentrations increased, whereas K and S decreased. Shoot K, Ca, P, and Mn concentrations decreased upon Cu(2+) exposure. Further, experiments with seedlings vertically grown on agar were carried out to investigate the root architecture changes. Increasing Cu(2+) concentrations (up to 50 muM) reduced the primary root growth and increased the density of short lateral roots. Experiment of split-root system emphasized a local toxicity of Cu(2+) on the root system. Observations of GUS reporter lines suggested changes in auxin and cytokinin accumulations and in mitotic activity within the primary and secondary root tips treated with Cu(2+). At toxic Cu(2+) concentrations (50 muM), these responses were accompanied by higher root apical meristem death. Contrary to previous reports, growth on high Cu(2+) did not induce an ethylene production. Finally lignin deposition was detected in Cu(2+)-treated roots, probably impacting on the translocation of nutrients. The effects on mineral profile, hormonal status, mitotic activity, cell viability and lignin deposition changes on the Cu(2+)-induced reorganization of the root system architecture are discussed 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Ethylenes  |2 NLM 
650 7 |a Minerals  |2 NLM 
650 7 |a Plant Growth Regulators  |2 NLM 
650 7 |a Phosphorus  |2 NLM 
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650 7 |a Manganese  |2 NLM 
650 7 |a 42Z2K6ZL8P  |2 NLM 
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650 7 |a Copper  |2 NLM 
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650 7 |a Lignin  |2 NLM 
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650 7 |a ethylene  |2 NLM 
650 7 |a 91GW059KN7  |2 NLM 
650 7 |a Iron  |2 NLM 
650 7 |a E1UOL152H7  |2 NLM 
650 7 |a Magnesium  |2 NLM 
650 7 |a I38ZP9992A  |2 NLM 
650 7 |a Zinc  |2 NLM 
650 7 |a J41CSQ7QDS  |2 NLM 
650 7 |a Potassium  |2 NLM 
650 7 |a RWP5GA015D  |2 NLM 
650 7 |a Calcium  |2 NLM 
650 7 |a SY7Q814VUP  |2 NLM 
700 1 |a Hermans, Christian  |e verfasserin  |4 aut 
700 1 |a Lutts, Stanley  |e verfasserin  |4 aut 
700 1 |a Verbruggen, Nathalie  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Plant physiology and biochemistry : PPB  |d 1991  |g 48(2010), 8 vom: 15. Aug., Seite 673-82  |w (DE-627)NLM098178261  |x 1873-2690  |7 nnns 
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