LocusID: A LocusID is a unique locus name that corresponds to a transcribed region in Arabidopsis genome. The names were designated as part of the genome sequence annotation and are associated with genes, genetic markers, polymorphic states, or map features. The format of the LocusID is, AtXgYYYYY. The At refers to Arabidopsis thaliana, the X number corresponds to the chromosome number, the g refers to gene and the 5 following Ys correspond to the five-digit code, numbered from top to bottom of the chromosome.