Metabolite Profiling and Gene Expression of Na/K Transporter Analyses Reveal Mechanisms of the Difference in Salt Tolerance Between Barley and Rice
Document Type
Article
Abstract
Barley (Hordeum vulgare) and rice (Oryza sativa) differ greatly in their salt tolerance, although both species belong to the Poaceae family. To understand the mechanisms in the difference of salt tolerance between the two species, the responses of ionome, metabolome and gene expression of Na and K transporters to the different salt treatments were analyzed using 4 barley and 4 rice genotypes differing in salt tolerance. In comparison with 4 rice genotypes, four barley genotypes showed better plant growth, lower shoot Na concentration and higher K concentration at the 9 day after salt treatments. There was a dramatic difference in absolute expression levels of SOS, HKT and NHX family genes between barley and rice, which might account for their difference in Na/K homeostasis and salt tolerance. Moreover, rice leaves accumulated excess Na under salt treatments, which caused serious damages to physiological metabolisms based on metabolomic analysis, but barley leaves had lower Na concentration and small changes in the most metabolites. These results provide useful insights into the molecular mechanism in the difference of salt tolerance between rice and barley.
Digital Object Identifier (DOI)
Publication Info
Plant Physiology and Biochemistry : PPB, Volume 130, 2018, pages 248-257.
APA Citation
Fu, L., Shen, Q., Kuang, L., Yu, J., Wu, D., & Zhang, G. (2018). Metabolite profiling and gene expression of Na/K transporter analyses reveal mechanisms of the difference in salt tolerance between barley and rice. Plant Physiology and Biochemistry, 130, 248–257. https://doi.org/10.1016/j.plaphy.2018.07.013
Rights
© 2018 Elesvier Masson SAS. All rights reserved.