EST sequencing and gene expression profiling of defense-related genes from Persea americana infected with Phytophthora cinnamomi.

Root pathogens of the avocado tree, such as P. cinnamomi and their interactions on hosts, are poorly understood and despite the importance of both the avocado crop and the effect Phytophthora has on its cultivation, there is a lack of molecular knowledge underpinning our understanding of defense strategies against the pathogen. To address this lack of molecular knowledge and initiate a better understanding of host-specific to defense, ESTs have been generated using 454 pyrosequencing and profiled 9 defense-related genes from infected avocado roots (tolerant rootstock).