The Functional Significance of Bacterial Predators.
18O-H2O
Bdellovibrio
food webs
predator
qSIP
stable isotope probing
top-down control
trophic interactions
Journal
mBio
ISSN: 2150-7511
Titre abrégé: mBio
Pays: United States
ID NLM: 101519231
Informations de publication
Date de publication:
27 04 2021
27 04 2021
Historique:
entrez:
28
4
2021
pubmed:
29
4
2021
medline:
8
10
2021
Statut:
epublish
Résumé
Predation structures food webs, influences energy flow, and alters rates and pathways of nutrient cycling through ecosystems, effects that are well documented for macroscopic predators. In the microbial world, predatory bacteria are common, yet little is known about their rates of growth and roles in energy flows through microbial food webs, in part because these are difficult to quantify. Here, we show that growth and carbon uptake were higher in predatory bacteria compared to nonpredatory bacteria, a finding across 15 sites, synthesizing 82 experiments and over 100,000 taxon-specific measurements of element flow into newly synthesized bacterial DNA. Obligate predatory bacteria grew 36% faster and assimilated carbon at rates 211% higher than nonpredatory bacteria. These differences were less pronounced for facultative predators (6% higher growth rates, 17% higher carbon assimilation rates), though high growth and carbon assimilation rates were observed for some facultative predators, such as members of the genera
Identifiants
pubmed: 33906922
pii: mBio.00466-21
doi: 10.1128/mBio.00466-21
pmc: PMC8092244
pii:
doi:
Substances chimiques
DNA, Bacterial
0
Carbon
7440-44-0
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2021 Hungate et al.
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