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A predator-prey interaction between a marine Pseudoalteromonas sp. and Gram-positive bacteria


Tang, B-L and Yang, J and Chen, X-L and Wang, P and Zhao, H-L and Su, H-N and Li, C-Y and Yu, Y and Zhong, S and Wang, L and Lidbury, I and Ding, H and Wang, M and McMinn, A and Zhang, X-Y and Chen, Y and Zhang, Y-Z, A predator-prey interaction between a marine Pseudoalteromonas sp. and Gram-positive bacteria, Nature Communications, 11, (1) Article 285. ISSN 2041-1723 (2020) [Refereed Article]


Copyright Statement

Copyright 2020 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1038/s41467-019-14133-x


Predator-prey interactions play important roles in the cycling of marine organic matter. Here we show that a Gram-negative bacterium isolated from marine sediments (Pseudoalteromonas sp. strain CF6-2) can kill Gram-positive bacteria of diverse peptidoglycan (PG) chemotypes by secreting the metalloprotease pseudoalterin. Secretion of the enzyme requires a Type II secretion system. Pseudoalterin binds to the glycan strands of Gram positive bacterial PG and degrades the PG peptide chains, leading to cell death. The released nutrients, including PG-derived D-amino acids, can then be utilized by strain CF6-2 for growth. Pseudoalterin synthesis is induced by PG degradation products such as glycine and glycine-rich oligopeptides. Genes encoding putative pseudoalterin-like proteins are found in many other marine bacteria. This study reveals a new microbial interaction in the ocean.

Item Details

Item Type:Refereed Article
Keywords:predator, prey, Pseudoalteromonas
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial ecology
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:McMinn, A (Professor Andrew McMinn)
ID Code:138969
Year Published:2020
Web of Science® Times Cited:37
Deposited By:Ecology and Biodiversity
Deposited On:2020-05-15
Last Modified:2020-12-08
Downloads:14 View Download Statistics

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