Microbial Association with the Dynamics of Soil Biochemical Properties in Response to the Cultivation of Gastrodia Elata BL. And Phallus Impudicus

Abstract

Soil microbiome plays vital roles in soil nutrient cycling and plant growth; their diversity and composition are commonly influenced by soil managements. Currently, the specific dynamic of soil microenvironment in cultivation of Gastrodia elata Bl. and Phallus impudicus remains unknown. To narrow this knowledge gap, soil biochemical properties and soil microbial community in soils around G. elata and P. impudicus were analyzed and compared. The results revealed that the cultivation of G. elata and P. impudicus both increased the diversity, complexity, and stability of the soil microbial community and reshaped the soil microbial composition. The cultivation of P. impudicus reversed the G. elata-induced decreases in soil pH and nutrient levels, which were coincidence with the changes of relative abundances of some genera. Moreover, the CCA result indicated that the soil microbial community strongly correlates with soil pH and available N, indicating that soil nutrient levels play dominant roles in soil microbial community improvement. Our findings indicated that cultivation of P. impudicus affected soil microorganisms mainly through changes in soil nutrient profile and might have potential benefits in next growing season.

Keywords: traditional Chinese medicine, soil nutrient, soil microbial community, Gastrodia elata, Armillaria gallica