Variation in selenium tolerance and accumulation among 19 Arabidopsis thaliana accessions

Journal of Plant Physiology
Lihong ZhangElizabeth A H Pilon-Smits

Abstract

Selenium (Se) is an essential element for many organisms but also toxic at higher levels. The objective of this study was to identify accessions from the model species Arabidopsis thaliana that differ in Se tolerance and accumulation. Nineteen Arabidopsis accessions were grown from seed on agar medium with or without selenate (50 microM) or selenite (20 microM), followed by analysis of Se tolerance and accumulation. Tissue sulfur levels were also compared. The Se Tolerance Index (root length+Se/root length control) varied among the accessions from 0.11 to 0.44 for selenite and from 0.05 to 0.24 for selenate. When treated with selenite, the accessions differed by two-fold in shoot Se concentration (up to 250 mgkg(-1)) and three-fold in root Se concentration (up to 1000 mgkg(-1)). Selenium accumulation from selenate varied 1.7-fold in shoot (up to 1000 mgkg(-1)) and two-fold in root (up to 650 mgkg(-1)). Across all accessions, a strong correlation was observed between Se and S concentration in both shoot and root under selenate treatment, and in roots of selenite-treated plants. Shoot Se accumulation from selenate and selenite were also correlated. There was no correlation between Se tolerance and accumulation, either for selenat...Continue Reading

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Mar 17, 2006·The New Phytologist·Lihong ZhangElizabeth A H Pilon-Smits

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Citations

Sep 19, 2012·Journal of Experimental Botany·Nóra LehotaiLászló Erdei
Jan 8, 2008·Plant Physiology·Masanori TamaokiElizabeth A H Pilon-Smits
Jan 1, 2016·Annals of Botany·Philip J White
Oct 6, 2009·The Science of the Total Environment·Karaj S Dhillon, Surjit K Dhillon
Dec 2, 2009·Plant Physiology and Biochemistry : PPB·Mikail Akbulut, Selcen Cakir
Dec 3, 2011·Plant Biology·A F El Mehdawi, E A H Pilon-Smits
Dec 20, 2016·The New Phytologist·Michela Schiavon, Elizabeth A H Pilon-Smits
Jun 1, 2007·Functional Plant Biology : FPB·Rui A Gomes-JuniorRicardo A Azevedo
Jan 22, 2009·Journal of Agricultural and Food Chemistry·Kunlun Liu, Zhenxin Gu
Mar 18, 2020·Environmental Science & Technology·Gavin Christopher StonehouseElizabeth Pilon-Smits
Oct 8, 2021·Bulletin of Environmental Contamination and Toxicology·Zhen WangFei Pang

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