Phylogenetic tree of FaZnF and related genes. The top BLAST hits from each genera obtained when FaZnF was used for BLAST analysis at NCBI . Also included is "TA567_4606_Festuca" which was the top BLAST hit when TIGR Plant Transcript Assembly http://plantta.jcvi.org/search.shtml was queried with FaZnF . This transcript assembly contained ESTs from a heat stressed cDNA subtraction library from tall fescue  and was most closely related to FaZnF. The scale bar represents .09 nucleotide substitutions per site, or 9 nucleotide differences per 100 nucleotides.