Novel multicellular prokaryote discovered next to an underground stream.
competition-dispersal trade-off
ecological scaffolding
evolution
evolutionary biology
limestone cave
origin of multicellularity
two-dimensional nematic liquid crystal
Journal
eLife
ISSN: 2050-084X
Titre abrégé: Elife
Pays: England
ID NLM: 101579614
Informations de publication
Date de publication:
11 10 2022
11 10 2022
Historique:
received:
04
07
2021
accepted:
05
09
2022
entrez:
11
10
2022
pubmed:
12
10
2022
medline:
13
10
2022
Statut:
epublish
Résumé
A diversity of prokaryotes currently exhibit multicellularity with different generation mechanisms in a variety of contexts of ecology on Earth. In the present study, we report a new type of multicellular bacterium, HS-3, isolated from an underground stream. HS-3 self-organizes its filamentous cells into a layer-structured colony with the properties of a nematic liquid crystal. After maturation, the colony starts to form a semi-closed sphere accommodating clusters of coccobacillus daughter cells and selectively releases them upon contact with water. This is the first report that shows that a liquid-crystal status of cells can support the prokaryotic multicellular behavior. Importantly, the observed behavior of HS-3 suggests that the recurrent intermittent exposure of colonies to water flow in the cave might have been the ecological context that cultivated the evolutionary transition from unicellular to multicellular life. This is the new extant model that underpins theories regarding a role of ecological context in the emergence of multicellularity.
Identifiants
pubmed: 36217817
doi: 10.7554/eLife.71920
pii: 71920
pmc: PMC9555858
doi:
pii:
Substances chimiques
Pralidoxime Compounds
0
Water
059QF0KO0R
HS 3
25487-36-9
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2022, Mizuno et al.
Déclaration de conflit d'intérêts
KM, MM, TN, AK, SH, SF, KT, KM No competing interests declared
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