Figure 4.

Incompatible graft-specific upregulated genes are involved in defense response. (a, b) Uniquely upregulated incompatible graft genes were determined by performing likelihood ratio testing (p < 0.05) on ungrafted, self-graft scion, and incompatible graft scion as well as ungrafted, self-grafted stock, and incompatible stock tissue. The genes upregulated in only the incompatible graft tissue were used to perform GO enrichment. GO terms enriched in incompatible grafted tomato tissue at 7, 14, and 21 DAG (a). GO terms enriched in incompatible grafted pepper tissue at 7, 14, and 21 DAG (b). (c, d) Log-fold change of NLRs in grafted tissue compared to ungrafted tissue of tomato (c) and pepper (d). (e) The log-fold change of genes involved in hypersensitive response in grafted vs. ungrafted tissue. The log-fold change was scaled by row. The tissue is denoted by the colored columns, from left to right, where self-grafted scions are dark purple, self-grafted stocks are light purple, incompatible grafted scions are orange, and incompatible grafted stocks are yellow. The days after grafting were denoted by colored columns, from left to right, where 7 DAG are white, 14 DAG are grey, and 21 DAG are black. Astrix denotes adjusted P-value<0.05 and log-fold change greater than |1.5|.