Selenolanthionine is the major water-soluble selenium compound in the selenium tolerant plant Cardamine violifolia
| Autor: | Zsuzsa Jókai, Yafeng Liu, Jiqian Xiang, Eszter Borbála Both, Hongqing Yin, Anna Magyar, Shuxun Shao, Mihály Dernovics |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
0106 biological sciences Selenium Compound biology media_common.quotation_subject 010401 analytical chemistry Biophysics Cardamine violifolia food and beverages chemistry.chemical_element Selenolanthionine Brassicaceae biology.organism_classification 01 natural sciences Biochemistry 0104 chemical sciences Speciation chemistry Botany Hyperaccumulator Molecular Biology Selenium 010606 plant biology & botany Cardamine media_common |
| Zdroj: | Biochimica et biophysica acta. General subjects. 1862(11) |
| ISSN: | 1872-8006 |
| Popis: | Selenium hyperaccumulation in plants often involves the synthesis of non-proteinaceous methylated selenoamino acids serving for the elimination of excess selenium from plant metabolism to protect plant homeostasis.Our study aimed at the identification of the main selenium species of the selenium hyperaccumulator plant Cardamine violifolia (Brassicaceae) that grows in the wild in the seleniferous region of Enshi, China. A sample of this plant (3.7 g Se kgThe Cardamine violifolia sample did not contain in considerable amount any of the organic selenium species that are often formed in hyperaccumulator plants; the inorganic selenium content (mostly as elemental selenium) accounted only for20% of total Se. The most abundant selenium compound, accounting for about 40% of total Se was proved to be selenolanthionine, a selenium species that has never been unambiguously identified before from any selenium containing sample. The identification process was completed with chemical synthesis too. The molar ratio of lanthionine:selenolanthionine in the water extract was ca. 1:8.Finding selenolanthionine as the main organic selenium species in a plant possibly unearths a new way of selenium tolerance. This article is part of a Special Issue entitled Selenium research in biochemistry and biophysics - 200 year anniversary issue, edited by Dr. Elias Arnér and Dr. Regina Brigelius-Flohe. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect