The I2 resistance gene homologues in Solanum have complex evolutionary patterns and are targeted by miRNAs.

ABSTRACT:

Background

Several resistance traits, including the I2 resistance against tomato fusarium wilt, were mapped to the long arm of chromosome 11 of Solanum. However, the structure and evolution of this locus remain poorly understood.

Results

Comparative analysis showed that the structure and evolutionary patterns of the I2 locus vary considerably between potato and tomato. The I2 homologues from different Solanaceae species usually do not have orthologous relationship, due to duplication, deletion and frequent sequence exchanges. At least 154 sequence exchanges were detected among 76 tomato I2 homologues, but sequence exchanges between I2 homologues in potato is less frequent. Previous study showed that I2 homologues in potato were targeted by miR482. However, our data showed th

SUBMITTER: Wei C 

PROVIDER: S-EPMC4161772 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature