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231223s2007 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2006.01943.x
|2 doi
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|a pubmed24n0560.xml
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Galeas, Miriam L
|e verfasserin
|4 aut
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| 245 |
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|a Seasonal fluctuations of selenium and sulfur accumulation in selenium hyperaccumulators and related nonaccumulators
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| 264 |
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 21.03.2007
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|a Date Revised 14.04.2021
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|a published: Print
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|a Citation Status MEDLINE
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|a Some plants hyperaccumulate selenium (Se) up to 1% of dry weight. This study was performed to obtain insight into whole-plant Se fluxes in hyperaccumulators. Selenium hyperaccumulators Astragalus bisulcatus and Stanleya pinnata were monitored over two growing seasons for seasonal fluctuations in concentrations of Se and the chemically similar element sulfur (S). The related nonhyperaccumulators Astragalus sericoleucus, Oxytropis sericea and Thlaspi montanum were included for comparison. In both hyperaccumulators leaf Se decreased from April to October, coinciding with Se hyperaccumulation in flowers and seeds. Root Se levels were lowest in summer. Selenium concentration decreased with leaf age in both hyperaccumulators. Leaf S levels peaked in summer in all plant species, as did Se levels in nonhyperaccumulators. Selenium and S levels tended to be negatively correlated in hyperaccumulators, and positively correlated in nonhyperaccumulators. These results suggest a specific flow of Se in hyperaccumulator plants over the growing season, from root to young leaves in spring, followed by remobilization from aging leaves to reproductive tissues in summer, and back to roots in the autumn
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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7 |
|a Soil
|2 NLM
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| 650 |
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|a Sulfur
|2 NLM
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| 650 |
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7 |
|a 70FD1KFU70
|2 NLM
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| 650 |
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|a Selenium
|2 NLM
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| 650 |
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|a H6241UJ22B
|2 NLM
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| 700 |
1 |
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|a Zhang, Li Hong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Freeman, John L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wegner, Mellissa
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pilon-Smits, Elizabeth A H
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 173(2007), 3 vom: 31., Seite 517-525
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:173
|g year:2007
|g number:3
|g day:31
|g pages:517-525
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|u http://dx.doi.org/10.1111/j.1469-8137.2006.01943.x
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