Taxonomic identification and temperature stress tolerance mechanisms of Aequorivita marisscotiae sp. nov

The deep sea harbours microorganisms with unique life characteristics and activities due to adaptation to particular environmental conditions, but the limited sample collection and pure culture techniques available constrain the study of deep-sea microorganisms. In this study, strain Ant34-E75 was i...

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Bibliographic Details
Published in:Communications biology 2023-11, Vol.6 (1), p.1186-1186, Article 1186
Main Authors: Liu, Wenqi, Cong, Bailin, Lin, Jing, Liu, Shenghao, Deng, Aifang, Zhao, Linlin
Format: Article
Language:English
Subjects:
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631/326/171/1878
631/326/41/2529
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631/326/41/2535
Adaptation
Base Composition
Biology
Biomedical and Life Sciences
Chlamydomonas reinhardtii
Cold Temperature
Cold tolerance
Deep sea
Environmental conditions
Fatty Acids - analysis
Life Sciences
Microorganisms
New species
Peptidoglycans
Phylogeny
Pure culture
rRNA
Seawater
Sediments
Temperature
Temperature tolerance
Transcriptomes
Transcriptomics
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Summary:The deep sea harbours microorganisms with unique life characteristics and activities due to adaptation to particular environmental conditions, but the limited sample collection and pure culture techniques available constrain the study of deep-sea microorganisms. In this study, strain Ant34-E75 was isolated from Antarctic deep-sea sediment samples and showed the highest 16 S rRNA gene sequence similarity (97.18%) with the strain Aequorivita viscosa 8-1b T . Strain Ant34-E75 is psychrotrophic and can effectively increase the cold tolerance of Chlamydomonas reinhardtii (a model organism). Subsequent transcriptome analysis revealed multiple mechanisms involved in the Ant34-E75 response to temperature stress, and weighted gene co-expression network analysis (WGCNA) showed that the peptidoglycan synthesis pathway was the key component. Overall, this study provides insights into the characteristics of a deep-sea microorganism and elucidates mechanisms of temperature adaptation at the molecular level. A novel Aequorivita bacterium isolated from deep sea sediments in Antarctica could increase cold tolerance of Chlamydomonas reinhardtii , transcriptomics revealed peptidoglycan rearrangement as key response to cold stress.
ISSN:2399-3642
2399-3642
DOI:10.1038/s42003-023-05559-7