Arabidopsis halleri shows hyperbioindicator behaviour for Pb and leaf Pb accumulation spatially separated from Zn

Arabidopsis halleri shows hyperbioindicator behaviour for Pb and leaf Pb accumulation spatially separated from Zn

© 2019 The Authors New Phytologist © 2019 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 226(2020), 2 vom: 02. Apr., Seite 492-506
1. Verfasser: Höreth, Stephan (VerfasserIn)
Weitere Verfasser: Pongrac, Paula, van Elteren, Johannes T, Debeljak, Marta, Vogel-Mikuš, Katarina, Weber, Michael, Braun, Manuel, Pietzenuk, Björn, Pečovnik, Matic, Vavpetič, Primož, Pelicon, Primož, Arčon, Iztok, Krämer, Ute, Clemens, Stephan
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis thaliana elemental imaging food webs metal contamination metal distribution metal speciation metallophyte Arabidopsis Proteins mehr... Cadmium 00BH33GNGH Lead 2P299V784P Zinc J41CSQ7QDS
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100 1 |a Höreth, Stephan  |e verfasserin  |4 aut 
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520 |a Lead (Pb) ranks among the most problematic environmental pollutants. Background contamination of soils is nearly ubiquitous, yet plant Pb accumulation is barely understood. In a survey covering 165 European populations of the metallophyte Arabidopsis halleri, several field samples had indicated Pb hyperaccumulation, offering a chance to dissect plant Pb accumulation. Accumulation of Pb was analysed in A. halleri individuals from contrasting habitats under controlled conditions to rule out aerial deposition as a source of apparent Pb accumulation. Several elemental imaging techniques were employed to study the spatial distribution and ligand environment of Pb. Regardless of genetic background, A. halleri individuals showed higher shoot Pb accumulation than A. thaliana. However, dose-response curves revealed indicator rather than hyperaccumulator behaviour. Xylem sap data and elemental imaging unequivocally demonstrated the in planta mobility of Pb. Highest Pb concentrations were found in epidermal and vascular tissues. Distribution of Pb was distinct from that of the hyperaccumulated metal zinc. Most Pb was bound by oxygen ligands in bidentate coordination. A. halleri accumulates Pb whenever soil conditions render Pb phytoavailable. Considerable Pb accumulation under such circumstances, even in leaves of A. thaliana, strongly suggests that Pb can enter food webs and may pose a food safety risk 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Arabidopsis thaliana 
650 4 |a elemental imaging 
650 4 |a food webs 
650 4 |a metal contamination 
650 4 |a metal distribution 
650 4 |a metal speciation 
650 4 |a metallophyte 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Cadmium  |2 NLM 
650 7 |a 00BH33GNGH  |2 NLM 
650 7 |a Lead  |2 NLM 
650 7 |a 2P299V784P  |2 NLM 
650 7 |a Zinc  |2 NLM 
650 7 |a J41CSQ7QDS  |2 NLM 
700 1 |a Pongrac, Paula  |e verfasserin  |4 aut 
700 1 |a van Elteren, Johannes T  |e verfasserin  |4 aut 
700 1 |a Debeljak, Marta  |e verfasserin  |4 aut 
700 1 |a Vogel-Mikuš, Katarina  |e verfasserin  |4 aut 
700 1 |a Weber, Michael  |e verfasserin  |4 aut 
700 1 |a Braun, Manuel  |e verfasserin  |4 aut 
700 1 |a Pietzenuk, Björn  |e verfasserin  |4 aut 
700 1 |a Pečovnik, Matic  |e verfasserin  |4 aut 
700 1 |a Vavpetič, Primož  |e verfasserin  |4 aut 
700 1 |a Pelicon, Primož  |e verfasserin  |4 aut 
700 1 |a Arčon, Iztok  |e verfasserin  |4 aut 
700 1 |a Krämer, Ute  |e verfasserin  |4 aut 
700 1 |a Clemens, Stephan  |e verfasserin  |4 aut 
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773 1 8 |g volume:226  |g year:2020  |g number:2  |g day:02  |g month:04  |g pages:492-506 
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