Analyzing the natural variation in Cs tolerance of Arabidopsis thaliana accessions

Abstract

Caesium(Cs) is chemically similar to potassium(K). Although both elements are taken up by same pathways, Cs is toxic to plants.
Arabidopsis thaliana is distributed widely across the world. More than 1000 accessions of Arabidopsis have been collected. Although few differences exist among their nucleotide sequences, these subtle differences induce large genetic variation in phenotypic traits such as stress tolerance. In this study, to understand the natural variation in Cs tolerance among Arabidopsis accessions, we evaluated Cs tolerances of 354 accessions collected in RIKEN BRC. We found several Cs-tolerant-accessions or Cs-sensitive-accessions.Cs content was examined during Cs treatment.Interestingly,Cvi-0 plants maintained lower Cs level.