Diversity dynamics of aerobic anoxygenic phototrophic bacteria in a freshwater lake.
Journal
Environmental microbiology reports
ISSN: 1758-2229
Titre abrégé: Environ Microbiol Rep
Pays: United States
ID NLM: 101499207
Informations de publication
Date de publication:
02 2023
02 2023
Historique:
received:
18
03
2022
accepted:
19
09
2022
pubmed:
13
12
2022
medline:
21
1
2023
entrez:
12
12
2022
Statut:
ppublish
Résumé
Aerobic anoxygenic photoheterotrophic (AAP) bacteria represent a functional group of prokaryotic organisms that harvests light energy using bacteriochlorophyll-containing photosynthetic reaction centers. They represent an active and rapidly growing component of freshwater bacterioplankton, with the highest numbers observed usually in summer. Species diversity of freshwater AAP bacteria has been studied before in lakes, but its seasonal dynamics remain unknown. In this report, we analysed temporal changes in the composition of the phototrophic community in an oligo-mesotrophic freshwater lake using amplicon sequencing of the pufM marker gene. The AAP community was dominated by phototrophic Gammaproteobacteria and Alphaproteobacteria, with smaller contribution of phototrophic Chloroflexota and Gemmatimonadota. Phototrophic Eremiobacteriota or members of Myxococcota were not detected. Interestingly, some AAP taxa, such as Limnohabitans, Rhodoferax, Rhodobacterales or Rhizobiales, were permanently present over the sampling period, while others, such as Sphingomonadales, Rhodospirillales or Caulobacterales appeared only transiently. The environmental factors that best explain the seasonal changes in AAP community were temperature, concentrations of oxygen and dissolved organic matter.
Identifiants
pubmed: 36507772
doi: 10.1111/1758-2229.13131
pmc: PMC10103773
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
60-71Informations de copyright
© 2022 The Authors. Environmental Microbiology Reports published by Applied Microbiology International and John Wiley & Sons Ltd.
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