Impact of planktonic low nucleic acid-content bacteria to bacterial community structure and associated ecological functions in a shallow lake.
Sci Total Environ
; 658: 868-878, 2019 Mar 25.
Article
en En
| MEDLINE
| ID: mdl-30678021
ABSTRACT
In this study, 0.45⯵m filtration, flow cytometric fingerprint, 16S rRNA amplicon sequencing, and bioinformation tools were adopted to analyze the structural diversity and potential functions of planktonic low nucleic acid (LNA)- content bacteria in a shallow lake. Three bacterial groups, namely, "LNA," "high nucleic acid (HNA)-Small," and "HNA-Large," were classified through flow cytometric fingerprint, among which the "HNA-Small" group was possibly in the proliferation stage of the "LNA" group. Total nitrogen and phosphate were the key factors that influence the growth of LNA bacteria. Results of 16S rRNA amplicon sequencing showed that LNA bacteria were phylogenetically less diverse than HNA bacteria, and Actinobacteria and Proteobacteria (especially Gamma-Proteobacteria) were the dominant phyla in LNA bacterial operational taxonomic units (OTUs). Accordingly, hgcI_clade and Pseudomonas were the most abundant bacterial genera in LNA bacterial OTUs. The fraction of low-abundance LNA bacteria was sensitive to several environmental factors, indicating that environmental factors only determined the fraction distribution of low-abundance bacteria. The prediction of metabolic and ecological functions showed that LNA and HNA bacteria had distinct metabolic and ecological functions, which were mainly attributed to the dominant and exclusive bacterial groups.
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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fitoplancton
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Lagos
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Fenómenos Fisiológicos Bacterianos
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Microbiota
Tipo de estudio:
Prognostic_studies
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Risk_factors_studies
País como asunto:
Asia
Idioma:
En
Año:
2019
Tipo del documento:
Article