Fig. 6: Alterations in soil nitrogen cycling processes under plastic exposure.

The variation of nitrogen cycling processes regulated by a functional gene and b microbial genera between PE vs. CK, PBAT vs. CK, and PBAT vs. PE. Orange and blue lines indicate that the functional genes are increased and decreased by the former treatment, respectively. The dotted line indicates that the functional genes are not detected. The number in the parentheses represents the fold change value between the two comparative treatments.