Phenology and ecological role of aerobic anoxygenic phototrophs in freshwaters.

ABSTRACT:

Background

Aerobic anoxygenic phototrophic (AAP) bacteria are heterotrophic bacteria that supply their metabolism with light energy harvested by bacteriochlorophyll-a-containing reaction centers. Despite their substantial contribution to bacterial biomass, microbial food webs, and carbon cycle, their phenology in freshwater lakes remains unknown. Hence, we investigated seasonal variations of AAP abundance and community composition biweekly across 3 years in a temperate, meso-oligotrophic freshwater lake.

Results

AAP bacteria displayed a clear seasonal trend with a spring maximum following the bloom of phytoplankton and a secondary maximum in autumn. As the AAP bacteria represent a highly diverse assemblage of species, we followed their seasonal succession using the amplicon

SUBMITTER: Villena-Alemany C 

PROVIDER: S-EPMC10976687 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature