Fig. 3From: Earthworms facilitated pepper (Capsicum annuum L.) growth via enhancing the population and function of arbuscular mycorrhizal fungi in a low-density polyethylene-contaminated soilSoil arbuscular mycorrhizal (AM) fungal abundance (A), root mycorrhizal colonization (B), and the individual plant biomass (C) and fruit yield (D) of pepper in the unsterilized soil. -E, non-inoculation of earthworm; + E, inoculation of earthworm. Data are means with standard deviation (n = 4). Different letters indicate significant difference (p < 0.05)Back to article page