EIN3 and SOS2 synergistically modulate plant salt tolerance.

ABSTRACT: Ethylene biosynthesis and the ethylene signaling pathway regulate plant salt tolerance by activating the expression of downstream target genes such as those related to ROS and Na⁺/K⁺ homeostasis. The Salt Overly Sensitive (SOS) pathway regulates Na⁺/K⁺ homeostasis in Arabidopsis under salt stress. However, the connection between these two pathways is unclear. Through genetic screening, we identified two sos2 alleles as salt sensitive mutants in the ein3-1 background. Neither Ethylene-Insensitive 2 (EIN2) nor EIN3 changed the expression patterns of SOS genes including SOS1, SOS2, SOS3 and SOS3-like Calcium Binding Protein 8 (SCaBP8), but SOS2 activated the expression of one target gene of EIN3, Ethylene and Salt-inducible ERF 1 (ESE1). Moreover, S

SUBMITTER: Quan R 

PROVIDER: S-EPMC5353744 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature