Fig 5. Model of SA and JA pathway temporal regulation induced by Phytophthora cinnamomi in tolerant avocado roots.

At 6 hrs an induction of signaling pathways and transcription factors occurred, which was linked to SA signaling. Subsequently at 18 hrs, both SA and JA-linked induction of ROS, cell wall strengthening and PR transcripts were observed. At 24 hrs transcripts related to lignin formation, flavonoid and volatile compound generation, as well as JA-linked ROS were up regulated. Text shaded in pink are SA-linked, text shaded in green are JA-linked. The pathogen is indicated in grey, nucleus in blue and lignin deposition in maroon.