Chemically-Mediated Interactions Between Macroalgae, Their Fungal Endophytes, and Protistan Pathogens.

ABSTRACT: Filamentous fungi asymptomatically colonize the inner tissues of macroalgae, yet their ecological roles remain largely underexplored. Here, we tested if metabolites produced by fungal endophytes might protect their host against a phylogenetically broad spectrum of protistan pathogens. Accordingly, the cultivable fungal endophytes of four brown algal species were isolated and identified based on LSU and SSU sequencing. The fungal metabolomes were tested for their ability to reduce the infection by protistan pathogens in the algal model Ectocarpus siliculosus. The most active metabolomes effective against the oomycetes Eurychasma dicksonii and Anisolpidium ectocarpii, and the phytomixid Maullinia ectocarpii were further characterized chemically. Several pyrenocine

SUBMITTER: Vallet M 

PROVIDER: S-EPMC6309705 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature