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Wang J, Zhang Y, Ding Y, Zhang Y, Xu W, Zhang X, Wang Y, Li D. Adaptive characteristics of indigenous microflora in an organically contaminated high salinity groundwater. Chemosphere 2024; 349:140951. [PMID: 38101485 DOI: 10.1016/j.chemosphere.2023.140951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/17/2023]
Abstract
Salinity, a critical factor, could directly or indirectly affect the microbial community structure and diversity. Changes in salinity levels act as environmental filters that influence the transformation of key microbial species. This study investigates the adaptive characteristics of indigenous microflora in groundwater in relation to external organic pollutants under high salinity stress. A highly mineralized shallow groundwater in Northwest China was conducted as the study area, and six representative sampling points were chosen to explore the response of groundwater hydrochemical parameters and microflora, as well as to identify the tolerance mechanisms of indigenous microflora to combined pollution. The results revealed that the dominant genera found in high salinity groundwater contaminated with organic pollutants possess the remarkable ability to degrade such pollutants even under challenging high salinity conditions, including Halomonas, Pseudomonas, Halothiobacillus, Sphingomonas, Lutibacter, Aquabacterium, Thiomicrospira, Aequorivita, etc. The hydrochemical factors, including total dissolved solids (TDS), sulfide, nitrite, nitrate, oxidation reduction potential (ORP), NH3-N, Na, Fe, benzene series, phenols, and halogenated hydrocarbons, demonstrated a significant influence on microflora. High levels of sulphate and sulfide in groundwater can exhibit dual effects on microflora. On one hand, these compounds can inhibit the growth and metabolism of microorganisms. On the other hand, they can also serve as effective electron donors/receptors during the microbial degradation of organic pollutants. Microorganisms exhibit resilience to the inhibitory effects of high salinity and organic pollutants via a series of tolerance mechanisms, such as strengthening the extracellular membrane barrier, enhancing the synthesis of relevant enzymes, initiating novel biochemical reactions, improving cellular self-healing capabilities, responding to unfavorable environmental conditions by migration, and enhancing the S cycle for the microbial metabolism of organic pollutants.
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Affiliation(s)
- Jili Wang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Yuling Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China.
| | - Yang Ding
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Yi Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Weiqing Xu
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Xinying Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Yiliang Wang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
| | - Dong Li
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China; Institute of Water Resources and Environment, Jilin University, Changchun, 130021, China
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Liu W, Cong B, Lin J, Liu S, Deng A, Zhao L. Taxonomic identification and temperature stress tolerance mechanisms of Aequorivita marisscotiae sp. nov. Commun Biol 2023; 6:1186. [PMID: 37990058 PMCID: PMC10663628 DOI: 10.1038/s42003-023-05559-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 11/08/2023] [Indexed: 11/23/2023] Open
Abstract
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 8-1bT. 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.
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Affiliation(s)
- Wenqi Liu
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
| | - Bailin Cong
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China.
| | - Jing Lin
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
| | - Shenghao Liu
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
| | - Aifang Deng
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
| | - Linlin Zhao
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
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Liu JC, Ye YQ, Tan XY, Du ZJ, Ye MQ. Description of Aequorivita aurantiaca sp. nov. Isolated from Coastal Sediment, and Comparative Genomic Analysis and Biogeographic Distribution of the Genus Aequorivita. Microorganisms 2023; 11:2518. [PMID: 37894175 PMCID: PMC10608841 DOI: 10.3390/microorganisms11102518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/19/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
A novel Gram-stain-negative, facultatively anaerobic, and non-motile bacterial strain, designated SDUM287046T, was isolated from the coastal sediments of Jingzi Port of Weihai, China. Cells of strain SDUM287046T were rod-shaped with widths of 0.4-0.5 μm and lengths of 0.7-1.4 μm and could produce flexirubin-type pigments. Optimum growth of strain SDUM287046T occurred at 33-35 °C, pH 7.0, and with 2% (w/v) NaCl. Oxidase activity was negative, but catalase activity was positive. Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain SDUM287046T was most closely related to Aequorivita aquimaris D-24T (98.3%). The main cellular fatty acids were iso-C15:0, anteiso-C15:0, iso-C17:0 3-OH, and summed feature 9 (comprised of iso-C17:1 ω9c and/or C16:0 10-methyl). The sole respiratory quinone was MK-6. The polar lipids consisted of phosphatidylethanolamine (PE), one aminolipid (AL), three unidentified glycolipids (GL), and three unidentified lipids (L). The DNA G + C content was 39.3 mol%. According to the integrated results of phylogenetic, physiological, biochemical, and chemotaxonomic characteristics, we propose that strain SDUM287046T represents a novel species of the genus Aequorivita, for which the name Aequorivita aurantiaca sp. nov. is proposed. The type strain is SDUM287046T (=KCTC 92754T = MCCC 1H01418T). Comparative genomic analysis showed that the 16 Aequorivita species shared 1453 core genes and differed mainly in amino acid metabolism, cofactor metabolism, and vitamin metabolism. Biogeographic distribution analysis indicated that the marine environments were the primary habitat of Aequorivita bacteria.
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Affiliation(s)
- Jun-Cheng Liu
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China;
| | - Yu-Qi Ye
- Marine College, Shandong University, Weihai 264209, China; (Y.-Q.Y.); (X.-Y.T.); (Z.-J.D.)
| | - Xin-Yun Tan
- Marine College, Shandong University, Weihai 264209, China; (Y.-Q.Y.); (X.-Y.T.); (Z.-J.D.)
| | - Zong-Jun Du
- Marine College, Shandong University, Weihai 264209, China; (Y.-Q.Y.); (X.-Y.T.); (Z.-J.D.)
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Weihai Research Institute of Industrial Technology, Shandong University, Weihai 264209, China
| | - Meng-Qi Ye
- Marine College, Shandong University, Weihai 264209, China; (Y.-Q.Y.); (X.-Y.T.); (Z.-J.D.)
- Weihai Research Institute of Industrial Technology, Shandong University, Weihai 264209, China
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
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Zhang H, Wang H, Cao L, Chen H, Zhong Z, Wang M, Lian C, Liu R, Zhou L, Li C. Aequorivita iocasae sp. nov., a halophilic bacterium isolated from sediment collected at a cold seep field in the South China Sea. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005199] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A moderately halophilic bacterium, designated strain KX20305T, was isolated from sediment collected from a cold seep field in the South China Sea. Cells of strain KX20305T were Gram-stain-negative, rod-shaped, non-motile, facultatively anaerobic, oxidase- and catalase-positive, and grew optimally at 25–30 °C, pH 6.0–8.0 and with 3–6 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain KX20305T grouped with members of the genus
Aequorivita
, including
Aequorivita aquimaris
D-24T (98.3 % sequence similarity),
Aequorivita vladivostokensis
KMM 3516T (98.1 %) and
Aequorivita echinoideorum
CC-CZW007T (97.5 %). Genome sequencing of strain KX20305T revealed a genome size of 3.35 Mb and a DNA G+C content of 38.71 mol%. Genomic average nucleotide identity (orthoANI) values of strain KX20305T with
A. aquimaris
D-24T,
A. vladivostokensis
KMM 3516T and
A. echinoideorum
JCM 30378T were 83.8, 81.7 and 75.4 %, respectively, while in silico DNA–DNA hybridization (GGDC) values for strain KX20305T with these strains were 27.2, 25.0 and 19.6 %, respectively. The major fatty acids of strain KX20305T were iso-C15 : 0, iso-C17 : 0 3-OH and 10-methyl C16 : 0/iso-C17 : 1
ω9c. The predominant respiratory quinone was menaquinone-6 (MK-6). The polar lipids mainly comprised phosphatidylethanolamine, two unidentified aminolipids and two unidentified lipids. Based on comparative analysis of phylogenetic, phylogenomic, phenotypic and chemotaxonomic characteristics, strain KX20305T represents a novel species of the genus
Aequorivita
, for which the name Aequorivita iocasae sp. nov. is proposed. The type strain is KX20305T (=KCTC 82699T=MCCC 1K06238T=JCM 34635T).
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Affiliation(s)
- Huan Zhang
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Hao Wang
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Lei Cao
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Hao Chen
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Zhaoshan Zhong
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Minxiao Wang
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Chao Lian
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Rui Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Li Zhou
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Chaolun Li
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
- Center of Deep-Sea Research & CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
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Ren WT, Meng FX, Guo LL, Sun L, Xu XW, Zhou P, Wu YH. Luteirhabdus pelagi gen. nov., sp. nov., a novel member of the family Flavobacteriaceae, isolated from the West Pacific Ocean. Arch Microbiol 2021; 203:6021-6031. [PMID: 34698880 PMCID: PMC8590676 DOI: 10.1007/s00203-021-02557-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 12/02/2022]
Abstract
A Gram-stain-negative, aerobic, and yellow-pigmented bacterium, designated A3-108T, was isolated from seawater of the West Pacific Ocean. Cells were non-motile and rod-shaped, with carotenoid-type pigments. Strain A3-108T grew at pH 6.0–8.5 (optimum 6.5) and 15–40 °C (optimum 28 °C), in the presence of 0.5–10% (w/v) NaCl (optimum 1.0%). It possessed the ability to produce H2S. Based on the 16S rRNA gene analysis, strain A3-108T exhibited highest similarity with Aureisphaera salina A6D-50T (90.6%). Phylogenetic analysis shown that strain A3-108T affiliated with members of the family Flavobacteriaceae and represented an independent lineage. The principal fatty acids were iso-C15:0, iso-C17:0 3-OH, iso-C15:1 G, and summed feature 3 (C16:1ω7c and/or C16:1ω6c). The sole isoprenoid quinone was MK-6. The major polar lipids were phosphatidylethanolamine, one unidentified aminophospholipid, one unidentified aminolipid and one unidentified lipid. The ANIb, in silico DDH and AAI values among the genomes of strain A3-108T and three reference strains were 67.3–71.1%, 18.7–22.1%, and 58.8–71.4%, respectively. The G + C content was 41.0%. Distinctness of the phylogenetic position as well as differentiating chemotaxonomic and other phenotypic traits revealed that strain A3-108T represented a novel genus and species of the family Flavobacteriaceae, for which the name Luteirhabdus pelagi gen. nov., sp. nov. is proposed (type strain, A3-108T = CGMCC 1.18821T = KCTC 82563T).
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Affiliation(s)
- Wen-Ting Ren
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China
| | - Fan-Xu Meng
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China
| | - Li-Li Guo
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China.,College of Life and Environmental Science, Hunan University of Arts and Science, Changde, 415000, People's Republic of China
| | - Li Sun
- State Research Center of Island Exploitation and Management, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China
| | - Xue-Wei Xu
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China.,School of Oceanography, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Peng Zhou
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China.
| | - Yue-Hong Wu
- Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, People's Republic of China. .,School of Oceanography, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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