Expression of resistance gene analogs in woodland strawberry (Fragaria vesca) during infection with Phytophthora cactorum.

ABSTRACT: Important losses in strawberry production are often caused by the oomycete Phytophthora cactorum, the causal agent of crown rot. However, very limited studies at molecular levels exist of the mechanisms related to strawberry resistance against this pathogen. To begin to rectify this situation, a PCR-based approach (NBS profiling) was used to isolate strawberry resistance gene analogs (RGAs) with altered expression in response to P. cactorum during a time course (2, 4, 6, 24, 48, 96 and 192 h post-infection). Twenty-three distinct RGA fragments of the NB-LRR type were identified from a resistance genotype (Bukammen) of the wild species Fragaria vesca. The gene transcriptional profiles after infection showed that the response of most RGAs was quicker and stronger in the resistance genotype (

SUBMITTER: Chen XR 

PROVIDER: S-EPMC4990625 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature