Microbial diversity and biogeochemical cycling potential in deep-sea sediments associated with seamount, trench, and cold seep ecosystems

Zhang, Xiaoyong; Wu, Keyue; Han, Zhuang; Chen, Zihui; Liu, Zhiying; Sun, Zu-Wang; Shao, Liyi; Zhao, Zelong; Zhou, Lei

doi:10.3389/fmicb.2022.1029564

Cited by 3 publications

(1 citation statement)

References 78 publications

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“…Synergistic or antagonistic effects of C, N, and S. Interactions among carbon, nitrogen, and sulfur in microbial ecosystems, especially under low-concentration conditions, is critical for assessing their synergistic and antagonistic effects on microbial metabolism 61 . These interactions can significantly influence the efficiency of microbial concentrating mechanisms and the overall biogeochemical cycles in nutrient-limited environments 62 . Sometimes, synergistic effects are found among different element cycles.…”

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confidence: 99%

Microbial strategies driving low concentration substrate degradation for sustainable remediation solutions

Yin,

He,

Collins

et al. 2024

npj Clean Water

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Microbial metabolism upholds a fundamental role in the sustainability of water ecosystems. However, how microorganisms surviving in low-concentration substrate water environments, including the existence of emerging compounds of interest, remains unclear. In this review, microbial strategies for concentrating, utilizing, and metabolizing of low concentration substrates were summarized. Microorganisms develop substrate-concentrating strategies at both the cell and aggregate levels in substrate-limited settings. Following, microbial uptake and transport of low-concentration substrates are facilitated by adjusting physiological characteristics and shifting substrate affinities. Finally, metabolic pathways, such as mixed-substrate utilization, syntrophic metabolism, dynamic response to nutrient variation, and population density-based mechanisms allow microorganisms to efficiently utilize low-concentration substrates and to adapt to challenging oligotrophic environments. All these microbial strategies will underpin devising new approaches to tackle environmental challenges and drive the sustainability of water ecosystems, particularly in managing low-concentration contaminants (i.e., micropollutants).

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confidence: 99%

Microbial strategies driving low concentration substrate degradation for sustainable remediation solutions

Yin,

He,

Collins

et al. 2024

npj Clean Water

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Screening of marine sediment-derived microorganisms and their bioactive metabolites: a review

Yao

Liu

et al. 2023

World J Microbiol Biotechnol

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Sediment bacterial diversity in the upwelling regions of Alappuzha, on the southwest coast of India.

Jasna,

Parvathi,

Gireesh

et al. 2024

Preprint

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Upwelling is an oceanographic phenomenon characterized by the upward movement of cold nutrient-rich water from the deep ocean to the surface. It plays a crucial role in supporting the productivity and biodiversity of the coastal ecosystem. The Southwest coast of India experiences coastal upwelling during the southwest monsoon (SWM-June to August) due to the influence of wind featuring calm, muddy waters and suspended sediments close to the coast, especially the mudbanks in Alappuzha. Sediment microbes play crucial roles in various ecological processes and are essential components of marine ecosystems. Understanding the spatiotemporal variance within the community is vital to comprehend the mechanisms underlying the biogeochemical cycles. However, the bacterial community structure and function in the upwelling and Mudbank regions on the Alappuzha coast have received little attention. In this study, we analyzed the abundance and diversity of bacterial communities in sediment during pre-monsoon (PRM) and monsoon (MON) periods in three stations, M1, M2, and M3. During the MON, mud banks appeared only at station M2, while upwelling occurred across the study region. Comparative analysis of family to species level showed that PRM and MON seasons have distinct microbial communities with variations in their relative abundance in the M2 (mudbank and upwelling prevalent) compared to the other two stations such as M1 and M3 (upwelling alone). The total count (0.32–6.12×106) (TC) and total viable count (0.62–2.56×106) (TVC) indicating bacterial abundance were higher in the PRM season than in MON. However, the relative abundance of Proteobacteria (39.46 to 81.43%) was comparatively high in all the stations during both seasons, with higher abundance during MON than PRM. In the present study, Vibrio photobacterium and Ferrimonas were detected and their relative abundance is comparatively higher in the upwelling period compared to PRM. The abundance of lower trophic levels communities such as the genus Bacillus, Tepidibacter, Vibrio, Photobacterium, Ferrimonas, Clostridium, Desulfococcus etc. showed seasonal and spatial variation in the mudbank and the upwelling regions. Our results indicate the variations in bacterial community structure which could be coupled with variations in organic substances, changes in currents, and oceanographic features.

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Microbial diversity and biogeochemical cycling potential in deep-sea sediments associated with seamount, trench, and cold seep ecosystems

Cited by 3 publications

References 78 publications

Microbial strategies driving low concentration substrate degradation for sustainable remediation solutions

Microbial strategies driving low concentration substrate degradation for sustainable remediation solutions

Screening of marine sediment-derived microorganisms and their bioactive metabolites: a review

Sediment bacterial diversity in the upwelling regions of Alappuzha, on the southwest coast of India.

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