| 项目编号 |
PRJCA034129 |
| 项目标题 |
Pseudomonas from the Mairana Trench |
| 涉及领域 |
Environmental |
| 数据类型 |
Metagenome
Genome sequencing and assembly
|
| 物种名称 |
marine sediment metagenome
|
| 描述信息 |
The hadal zone is the deepest region on Earth. It serves as a depositional zone for the sinking matter from surface ocean and continental margin, aided by its unique V-shaped structure. Due to extreme depth (over 6000 m), normally only organic matter with low degradability typically reaches the bottom of the trench. Concurrently, reports have indicated highly active carbon turnover and dense bacterial cells in the Mariana Trench. There remains a cognitive gap in understanding the connection between this phenomenon and the microbial taxa along with their metabolic activities. Here, we surveyed the Pseudomonas, one of the most widely distributed bacterial genera on Earth. The result revealed widespread distribution of Pseudomonas in the hadal zones. We obtained 21 metagenome-assembled genomes (MAGs) from seawater and sediment samples of the Mariana Trench, including three novel species. Comparative genomic analysis showed that hadal Pseudomonas possess more unique ortholog groups of genes related to energy generation and substances transport, distinct from those in other marine zones. These bacteria exhibit the ability to utilize diverse electron acceptors and accumulate compatible solutes, indicating two key strategies for adaptation for high hydrostatic pressure conditions. Furthermore, predicted genomic capabilities suggest that Pseudomonas could decompose various components of organic matter, particularly aromatics, as supported by metatranscriptomic datasets. These findings significantly enhance our understanding of Pseudomonas diversity and metabolic potential, providing valuable insights into the carbon and nitrogen cycles in hadal trench ecosystems. |
| 样品范围 |
Environment |
| 发布日期 |
2024-12-24 |
| 出版信息 |
| PubMed ID |
文章标题 |
杂志名称 |
Doi |
发表年份 |
| 40021978
|
Genomic evidence on the distribution and ecological function of Pseudomonas in hadal zone
|
BMC Microbiology
|
10.1186/s12866-025-03834-7
|
2025
|
|
|
| 项目资金来源 |
| 机构 |
项目类型 |
授权项目ID |
授权项目名称 |
| National Natural Science Foundation of China (NSFC)
|
|
42122043
|
|
|
|
| 提交者 |
Yu
Zhang (zhang.yusjtu@sjtu.edu.cn)
|
| 提交单位 |
Shanghai Jiaotong University |
| 提交日期 |
2024-12-24 |
