Hyphosphere microorganisms facilitate hyphal spreading and root colonization of plant symbiotic fungus in ammonium-enriched soil.

ABSTRACT: Anthropogenic nitrogen inputs lead to a high ammonium (NH₄⁺)/nitrate (NO₃^-) ratio in the soil, which restricts hyphal spreading of soil fungi. Access of symbiotic fungi to roots is a prerequisite for plant-fungal interactions. Hyphosphere bacteria protect fungi from environmental stress, yet the impact of hyphosphere bacteria on adaptation of host fungi to NH₄⁺-enriched conditions remains unclear. By developing soil microcosm assays, we report that a plant-symbiotic fungus, Phomopsis liquidambaris, harbors specific hyphosphere bacteria that facilitate hyphal spreading and assist in the root colonization in NH₄⁺-enriched soil. Genetic manipulation, 16S rRNA gene analysis and coinoculation assays revealed

SUBMITTER: Sun K 

PROVIDER: S-EPMC10504341 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature