Salt stress-induced FERROCHELATASE 1 improves resistance to salt stress by limiting sodium accumulation in Arabidopsis thaliana.

ABSTRACT: Ferrochelatase-1 as a terminal enzyme of heme biosynthesis regulates many essential metabolic and physiological processes. Whether FC1 is involved in plant response to salt stress has not been described. This study shows that Arabidopsis overexpressing AtFC1 displays resistance to high salinity, whereas a T-DNA insertion knock-down mutant fc1 was more sensitive to salt stress than wild-type plants. AtFC1 conferred plant salt resistance by reducing Na⁺ concentration, enhancing K⁺ accumulation and preventing lysis of the cell membrane. Such observations were associated with the upregulation of SOS1, which encodes a plasma membrane Na⁺/H⁺ antiporter. AtFC1 overexpression led to a reduced expression of several well known salt stress-responsive genes

SUBMITTER: Zhao WT 

PROVIDER: S-EPMC5676718 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature