Figure 2.

Schematic representations of segmental duplications of rice (A) and Arabidopsis (B) heavy-metal-associated genes. Different color lines indicate all synteny blocks in rice or Arabidopsis genome between each chromosome. Thick red lines indicate duplicated heavy-metal-associated gene pair on different chromosome, and thick blue lines indicate duplicated gene pair on same chromosome. The chromosome number is indicated at the bottom of each chromosome. Scale bar marked on the chromosome indicating chromosome lengths (Mb).