Effect of Organic Carbon and Nitrogen on the Interactions of Morchella spp. and Bacteria Dispersing on Their Mycelium.

ABSTRACT: In this study we investigated how the source of organic carbon (C_org) and nitrogen (N_org) affects the interactions between fungi of the genus Morchella and bacteria dispersing along their hyphae (fungal highways; FH). We demonstrated that bacteria using FH increase the hydrolysis of an organic nitrogen source that only the fungus can degrade. Using purified fungal exudates, we found that this increased hydrolysis was due to bacteria enhancing the activity of proteolytic enzymes produced by the fungus. The same effect was shown for various fungal and bacterial strains. The effect of this enhanced proteolytic activity on bacterial and fungal biomass production varied accordingly to the source of C_org and N_org provided. An increase in biomass

SUBMITTER: Lohberger A 

PROVIDER: S-EPMC6405442 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature