A Marine Group A isolate relies on other growing bacteria for cell wall formation.

Autor: Katayama T; Research Institute for Geo-Resources and Environment, Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan. katayama.t@aist.go.jp., Nobu MK; Bioproduction Research Institute, AIST, Tsukuba, Japan.; Institute for Extra-Cutting-Edge Science and Technology Avant-Garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan., Imachi H; Institute for Extra-Cutting-Edge Science and Technology Avant-Garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan., Hosogi N; EM Application Department, EM Business Unit, JEOL, Ltd., Akishima, Japan., Meng XY; Bioproduction Research Institute, AIST, Tsukuba, Japan., Morinaga K; Bioproduction Research Institute, AIST, Tsukuba, Japan., Yoshioka H; Research Institute for Geo-Resources and Environment, Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan., Takahashi HA; Research Institute of Earthquake and Volcano Geology, GSJ, AIST, Tsukuba, Japan., Kamagata Y; Bioproduction Research Institute, AIST, Tsukuba, Japan., Tamaki H; Bioproduction Research Institute, AIST, Tsukuba, Japan.
Jazyk: angličtina
Zdroj: Nature microbiology [Nat Microbiol] 2024 Aug; Vol. 9 (8), pp. 1954-1963. Date of Electronic Publication: 2024 Jun 03.
DOI: 10.1038/s41564-024-01717-7
Abstrakt: Most of Earth's prokaryotes live under energy limitation, yet the full breadth of strategies that enable survival under such conditions remain poorly understood. Here we report the isolation of a bacterial strain, IA91, belonging to the candidate phylum Marine Group A (SAR406 or 'Candidatus Marinimicrobia') that is unable to synthesize the central cell wall compound peptidoglycan itself. Using cultivation experiments and microscopy, we show that IA91 growth and cell shape depend on other bacteria, deriving peptidoglycan, energy and carbon from exogenous muropeptide cell wall fragments released from growing bacteria. Reliance on exogenous muropeptides is traceable to the phylum's ancestor, with evidence of vertical inheritance across several classes. This dependency may be widespread across bacteria (16 phyla) based on the absence of key peptidoglycan synthesis genes. These results suggest that uptake of exogenous cell wall components could be a relevant and potentially common survival strategy in energy-limited habitats like the deep biosphere.
(© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
Databáze: MEDLINE
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