Loss of function of an Arabidopsis homologue of JMJD6 suppresses the dwarf phenotype of acl5, a mutant defective in thermospermine biosynthesis.

In Arabidopsis thaliana, the ACL5 gene encodes thermospermine synthase and its mutant, acl5, exhibits a dwarf phenotype with excessive xylem formation. Studies of suppressor mutants of acl5 reveal the involvement of thermospermine in enhancing mRNA translation of the SAC51 gene family. We show here that a mutant, sac59, which partially suppresses the acl5 phenotype, has a point mutation in JMJ22 encoding a D6-class Jumonji C protein (JMJD6).

Easy-to-Use InDel Markers for Genetic Mapping between Col-0 and L-0 Accessions of .

Map-based gene cloning has played a key role in many genetic studies using the model plant, . In the post- next generation sequencing era, identification of point mutations and their corresponding genes is increasingly becoming a powerful and important approach to define plant gene function. To perform initial mapping experiments efficiently on mutants, enrichment of easy-to-use and reliable polymorphic DNA markers would be desirable.