Subgenome-biased expression and functional diversification of a Na⁺/H⁺ antiporter homoeologs in salt tolerance of polyploid wheat.

ABSTRACT: Common wheat (Triticum aestivum, BBAADD) is an allohexaploid species combines the D genome from Ae. tauschii and with the AB genomes from tetraploid wheat (Triticum turgidum). Compared with tetraploid wheat, hexaploid wheat has wide-ranging adaptability to environmental adversity such as salt stress. However, little is known about the molecular basis underlying this trait. The plasma membrane Na⁺/H⁺ transporter Salt Overly Sensitive 1 (SOS1) is a key determinant of salt tolerance in plants. Here we show that the upregulation of TaSOS1 expression is positively correlated with salt tolerance variation in polyploid wheat. Furthermore, both transcriptional analysis and GUS staining on transgenic plants indicated TaSOS1-A and TaSOS1-B<

SUBMITTER: Zheng M 

PROVIDER: S-EPMC9768589 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature