Figure 8.
Modular diversity at the hemizygous Avr3b–Avr10–Avr11 locus. (A) P. infestans contains multiple copies of pi3.4 distributed over the genome. Most copies are pseudo-genes. The hemizygous Avr3b–Avr10–Avr11 locus contains numerous pi3.4 copies and is the only locus with a full-length copy (pi3.4FA) and truncated copies with intact ORFs (pi3.4T and a subset of the pi3.4A copies). (B) Unequal crossing-over at the hemizygous Avr3b–Avr10–Avr11 locus. The pi3.4 amplification may serve as a source of modules for the assembly of novel full-length genes.
