biostudies-literatureUnknown129(1)Neugebauer KJames Hutton InstituteRural and Environment Science and Analytical Services DivisionKing Saud UniversityUniversity of NottinghamScottish Government<h4>Background and aims</h4>Some Caryophyllales species accumulate abnormally large shoot sodium (Na) concentrations in non-saline environments. It is not known whether this is a consequence of altered Na partitioning between roots and shoots. This paper tests the hypotheses (1) that Na concentrations in shoots ([Na]shoot) and in roots ([Na]root) are positively correlated among Caryophyllales, and (2) that shoot Na hyperaccumulation is correlated with [Na]shoot/[Na]root quotients.<h4>Methods</h4>Fifty two genotypes, representing 45 Caryophyllales species and 4 species from other angiosperm orders, were grown hydroponically in a non-saline, complete nutrient solution. Concentrations of Na in shoots and in roots were determined using inductively coupled plasma mass spectrometry (ICP-MS).<h4>Annals of botany65-78https://www.ebi.ac.uk/biostudies/studies/S-EPMC8752394biostudies-literatureSodium hyperaccumulators in the Caryophyllales are characterized by both abnormally large shoot sodium concentrations and [Na]shoot/[Na]root quotients greater than unity.PMC8752394El-Serehy HAThompson JANeugebauer KGeorge TSGraham NSWright GWhite PJBroadley MRfalseSodium hyperaccumulators in the Caryophyllales are characterized by both abnormally large shoot sodium concentrations and [Na]shoot/[Na]root quotients greater than unity.<h4>Background and aims</h4>Some Caryophyllales species accumulate abnormally large shoot sodium (Na) concentrations in non-saline environments. It is not known whether this is a consequence of altered Na partitioning between roots and shoots. This paper tests the hypotheses (1) that Na concentrations in shoots ([Na]shoot) and in roots ([Na]root) are positively correlated among Caryophyllales, and (2) that shoot Na hyperaccumulation is correlated with [Na]shoot/[Na]root quotients.<h4>Methods</h4>Fifty two genotypes, representing 45 Caryophyllales species and 4 species from other angiosperm orders, were grown hydroponically in a non-saline, complete nutrient solution. Concentrations of Na in shoots and in roots were determined using inductively coupled plasma mass spectrometry (ICP-MS).<h4>2022-01-01T00:00:00Z2022 Jan2025-04-21T18:55:57.285Z2025-04-05T17:25:18.624ZS-EPMC87523943460585910.1093/aob/mcab126