Bacterial marginolactones trigger formation of algal gloeocapsoids, protective aggregates on the verge of multicellularity.

ABSTRACT: Photosynthetic microorganisms including the green alga Chlamydomonas reinhardtii are essential to terrestrial habitats as they start the carbon cycle by conversion of CO₂ to energy-rich organic carbohydrates. Terrestrial habitats are densely populated, and hence, microbial interactions mediated by natural products are inevitable. We previously discovered such an interaction between Streptomyces iranensis releasing the marginolactone azalomycin F in the presence of C. reinhardtii Whether the alga senses and reacts to azalomycin F remained unknown. Here, we report that sublethal concentrations of azalomycin F trigger the formation of a protective multicellular structure by C. reinhardtii, which we named gloeocapsoid. Gloeocapsoids contain several cells

SUBMITTER: Krespach MKC 

PROVIDER: S-EPMC8609452 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature