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Article Abstract
() is one of the dominant algae during harmful algal blooms (HABs) in coastal regions of Southern China. exhibits complex heteromorphic life cycles that could switch between solitary cells and colonies. The ecological success of has been attributed to its colony formation, although underlying mechanisms remain unknown. Here, we investigated different bacterial communities associated with colonies and their influence on colony formation of two strains isolated from coastal waters of Guangxi (GX) and Shantou (ST). Eight operational taxonomic units (OTUs) were observed in ST co-cultures and were identified as biomarkers based on Linear discriminant analysis Effect Size (LEfSe) analysis, while seven biomarkers were identified in . GX co-cultures. Bacterial communities associated with the GX were more diverse than those of the ST strain. The most dominant phylum in the two co-cultures was Proteobacteria, within which was the most abundant genus in both GX and ST co-cultures. Bacteroidota were only observed in the GX co-cultures and Planctomycetota were only observed in the ST co-cultures. Co-culture experiments revealed that . colony formation was not influenced by low and medium cell densities of sp. GS7, but was inhibited by high cell densities of sp. GS7. Overall, these results indicated that the associated bacteria are selected by different . strains, which may affect the colony formation and development of .
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8891983 | PMC |
| http://dx.doi.org/10.3389/fmicb.2022.826602 | DOI Listing |
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