Adaptive traits of Planctomycetota bacteria to thrive in macroalgal habitats and establish mutually beneficial relationship with macroalgae

Limnology and Oceanography Letters, Journal Year: 2024, Volume and Issue: 9(6), P. 745 - 753

Published: July 10, 2024

Abstract Bacteria and macroalgae share an inseparable relationship, jointly influencing coastal ecosystems. Within habitats, Planctomycetota , a group of bacteria notoriously challenging to cultivate, often dominate. However, the mechanisms facilitating their persistence in this environment remain unclear. Here, we successfully isolated novel bacterium, Stieleria sp. HD01, from surface kelp. We demonstrated that HD01 possesses robust ability metabolize fucoidan, which constitutes half kelp‐derived organic carbon exhibits resistance attack by most microorganisms. Moreover, can utilize broad spectrum other organics, indicating its metabolic versatility competitive prowess within algal environments. Additionally, secrete antagonistic substances against bacteria, form biofilms, employ superoxide dismutase catalase resist oxidative stress, further consolidating ecological fitness. Comparative metagenomics analysis suggested may have mutually beneficial relationship with

Language: Английский

Anaerobaca lacustris gen. nov., sp. nov., an obligately anaerobic planctomycete of the widespread SG8-4 group, isolated from a coastal lake, and proposal of Anaerobacaceae fam. nov

Systematic and Applied Microbiology, Journal Year: 2024, Volume and Issue: 47(4), P. 126522 - 126522

Published: June 5, 2024

Language: Английский