Genome-wide identification, phylogenetic and expression of MAPKKK gene family in Arabidopsis pumila.

Mitogen-activated protein kinase kinase kinases (MAPKKKs) are important components of the MAPK cascade and play crucial roles in development and stress responses. Arabidopsis pumila is an ephemeral Brassicaceae plant growing in Xinjiang desert regions, which possesses salt tolerance. To explore the evolution and function of the MAPKKK gene family in A.