Fig. 4.

Exon-intron architecture of MAP kinases in Triticeae species. (a) MPKs; (b) MKKs; Clades C (MKK4s and 5 s) and D (MKK10s) do not have introns and are therefore not represented here. The blue (dark and light) blocks represent the exon lengths and grey (dark and light) blocks represent the intron lengths. The light blocks indicate an uncertain length that could not be verified on a given chromosome due to sequencing noise or other reasons. The blank blocks represent incomplete genomic information of the indicated portion of a gene. A split in the bar (red line) depicts two copies of TaMPK7(D) with different intron lengths. Cut bars indicate a size greater than that which is shown here. An arrow depicts orientation of the genes and the sizing bar refers to one kilobase (kb) length of genes. The numbers below bars indicate chromosome number in wheat and barley, where U refers to unknown chromosome number. A. tauschii and T. urartu chromosome numbers were not availabe and are therefore not indicated