Fig. 4

Heatmap of bacterial genera in all samples from Monochamus alternatus and infected and healthy Pinus massoniana. The red genera were mainly abundant in the M. alternatus midgut. The green genera were equally abundant in healthy and infected P. massoniana. The pink genera were abundant in the soil of healthy P. massoniana and various tissues of infected P. massoniana. The light blue genera were abundant in the phloem of healthy P. massoniana and various tissues of infected P. massoniana. The yellow genera were abundant in the bark of healthy P. massoniana and various tissues of infected P. massoniana. The dark blue genus was mainly present in the bark, phloem, xylem, and root of infected P. massoniana. The orange genus was mainly present in the phloem of P. massoniana, and it was more abundant in infected pines than healthy pines