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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2020.11.001
|2 doi
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|a pubmed24n1253.xml
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|a (DE-627)NLM317543210
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|a (NLM)33186850
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|a (PII)S0981-9428(20)30552-0
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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 |
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|a Santiago, Franklin E M
|e verfasserin
|4 aut
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|a Biochemical basis of differential selenium tolerance in arugula (Eruca sativa Mill.) and lettuce (Lactuca sativa L.)
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|c 2020
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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
|b cr
|2 rdacarrier
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|a Date Completed 27.01.2021
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Published by Elsevier Masson SAS.
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|a Selenium (Se) biofortification in crops provides a valuable strategy to enhance human Se intake. However, crops vary greatly with their capacity in tolerating and metabolizing/accumulating Se, and the basis underlying such variations remains to be fully understood. Here, we compared the effects of Se and its analog S treatments on plant growth and biochemical responses between a Se accumulator (arugula) and a non-accumulator (lettuce). Arugula exhibited an increased biomass production in comparison with untreated controls at a higher selenate concentration than lettuce (20 μM vs. 10 μM Na2SeO4), showing better tolerance to Se. Arugula accumulated 3-folds more Se and S than lettuce plants under the same treatments. However, the Se/S assimilation as assessed by ATP sulfurylase and O-acetylserine (thiol)lyase activities was comparable between arugula and lettuce plants. Approximately 4-fold higher levels of Se in proteins under the same doses of Se treatments were observed in arugula than in lettuce, indicating that Se accumulators have better tolerance to selenoamino acids in proteins. Noticeably, arugula showed 6-fold higher ascorbate peroxidase activity and produced over 5-fold more glutathione and non-protein thiols than lettuce plants, which suggest critical roles of antioxidants in Se tolerance. Taken together, our results show that the elevated Se tolerance of arugula compared to lettuce is most likely due to an efficient antioxidant defense system. This study provides further insights into our understanding of the difference in tolerating and metabolizing/accumulating Se between Se accumulators and non-accumulators
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|a Journal Article
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|a Antioxidants
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|a Arugula
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|a Lettuce
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|a Se accumulator and non-accumulator
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|a Selenium tolerance
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|a Sulfur
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| 650 |
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|a Antioxidants
|2 NLM
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| 650 |
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|a Selenium
|2 NLM
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| 650 |
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7 |
|a H6241UJ22B
|2 NLM
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| 650 |
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7 |
|a Selenic Acid
|2 NLM
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| 650 |
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7 |
|a HV0Y51NC4J
|2 NLM
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| 700 |
1 |
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|a Silva, Maria L S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cardoso, Arnon A S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Duan, Yongbo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guilherme, Luiz R G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Jiping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Li
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 157(2020) vom: 12. Dez., Seite 328-338
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:157
|g year:2020
|g day:12
|g month:12
|g pages:328-338
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| 856 |
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|u http://dx.doi.org/10.1016/j.plaphy.2020.11.001
|3 Volltext
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