In addition, RNA interference assays showed that infection with the BxSapB1‐silenced nematode Bursaphelenchus xylophilus resulted in significantly decreased expression of the PR genes PtPR‐1b, PtPR‐3, and PtPR‐5, and delayed the onset of symptoms in pine seedlings (Hu et al., 2019). The gene discussed is TMEM37; the disease is infection.