Characterization and proposed spontaneous deletion mechanism of AVR-Pik locus in Pyricularia oryzae

In phytopathogenic fungi, a mutation in the avirulence gene can lead to the breakdown of resistance in the host plant. The nucleotide sequences of the AVR-Pik locus in the strain Ina168 and its spontaneous mutant Ina168m95-5 of Pyricularia oryzae were determined. An AVR-Pik spontaneous deletion mechanism of Ina168m95-5, including multiple homologous recombination events involving repetitive transposable elements, is proposed.

Automated summary

In phytopathogenic fungi, a mutation in the avirulence gene can lead to host plant resistance breakdown. The nucleotide sequences of the AVR-Pik locus were determined in the strain Ina168 and its spontaneous mutant Ina168m95-5 of Pyricularia oryzae, proposing an AVR-Pik spontaneous deletion mechanism involving multiple homologous recombination events with repetitive transposable elements.