Effects of selenate and selenite on selenium accumulation and speciation in lettuce
Copyright © 2022 Elsevier Masson SAS. All rights reserved.
| Veröffentlicht in: | Plant physiology and biochemistry : PPB. - 1991. - 192(2022) vom: 01. Dez., Seite 162-171 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Plant physiology and biochemistry : PPB |
| Schlagworte: | Journal Article Biofortification Lactuca sativa L. Organic selenium Risk assessment Selenium Selenium speciation |
| Zusammenfassung: | Copyright © 2022 Elsevier Masson SAS. All rights reserved. Lettuce is a common vegetable in hydroponic production. In this paper, a selenium (Se)-biofortification method was provided. The Se content, speciation, and the effects of different concentrations of selenate and selenite on lettuce growth and amino acids were investigated. The results showed that lettuce had strong ability to accumulate exogenous selenium, and inorganic Se could be effectively converted into organic Se. The proportion of organic Se in the shoots under treatment with 4 μmol L-1 selenite was 100%. Selenomethionine was the main organic Se, accounting for 51% (selenate) and 90% (selenite) of the total Se. Adding Se improves photosynthesis of lettuce and promotes growth. The growth with 2 μmol L-1 selenate and 4 μmol L-1 selenite was better than CK, and the shoot fresh weight was increased by 143.22% and 166.98%, respectively. Furthermore, the optimum Se application is 2 μmol L-1, and some areas can apply 4 μmol L-1 selenite. But Se-excessive areas are not recommended to grow selenium-rich foods. Therefore, lettuce has strong biofortification potential |
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| Beschreibung: | Date Revised 04.11.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2022.10.007 |