Overproduction of microbial extracellular polymeric substances in subtropical intertidal sediments in response to endocrine disrupting chemicals

Yang, Lihua; Xiao, Sirui; Luan, Tiangang; Tam, N.F.Y.

doi:10.1016/j.scitotenv.2017.12.160

Cited by 19 publications

(4 citation statements)

References 55 publications

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“…It indicated that bacteria and other organisms have symbiotic relationship and the extracellular polymeric subtances (EPS) promote them to adhere to each other or any surface. This finding has also been corroborated by various studies (Costa et al 2018, Yang et al 2018b. The other two individuals detected are described as sea squirts: Ciona intestinalis and Corella sp.…”

Section: Discussionsupporting

confidence: 83%

Pre-study of the evaluation of ecological sessile succession and their relationship with bacteria on concrete artificial reef material

Gül,

Unsal

2024

International Journal of Environment and Geoinformatics

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Artificial reefs are human-made structures built for promoting marine life. Long-term monitoring and research regarding the use of artificial reefs in terms of ecological and economic perspective is essential. In this study, the ecological succession and their relationship with bacteria on concrete artificial reef material was investigated. Heybeliada artificial reef site was selected as sampling area. After three years period, the visual examination of ecological succession and sessile marine bacteria count were performed on the concrete artificial reef material. All the results showed that the strength of the artificial reef material is also affected by the biofilm layer and the creatures in the microecosystem. Therefore, monitoring studies should be carried out to determine the service life of artificial reef materials as well as to reveal the existence of the ecosystem formed and developing in these areas qualitatively and quantitatively.

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Section: Discussionsupporting

confidence: 83%

Pre-study of the evaluation of ecological sessile succession and their relationship with bacteria on concrete artificial reef material

Gül,

Unsal

2024

International Journal of Environment and Geoinformatics

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“…The detailed methods are described in the SI. The protein and polysaccharides concentrations of EPSs were determined using the modified Lowry method and anthrone–sulfuric acid method, respectively …”

Section: Materials and Methodsmentioning

confidence: 99%

Important Role of Biogas and Secretions in the Formation of Biological Fluid Sediment under Cyanobacterial Bloom Biomass Degradation

Wang

Bai

et al. 2023

ACS EST Water

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In eutrophic shallow lakes, cyanobacterial blooms will occur frequently and then accumulate on sediments, leading to the formation of biological fluid sediment. In this study, the formation process of biological fluid sediment was investigated in microcosm experiments by monitoring the variations in gas, sediment physicochemical properties, and microorganisms during 30 days. It was found that variations in sediment height reached the maximum value on day 8 (0.53 cm) with the minimum sediment density (1.04 g cm–3). Meanwhile, the amount of carbon dioxide (CO2) produced through fermentation was larger than methane (CH4) during the initial 4 days. Then, the amount of CH4 drastically increased, resulting in the release of gas from sediments. In addition, a high amount of extracellular polymer substances (EPSs) was produced and led to sediment particle agglomeration, which benefited in maintaining the structure of biological fluid sediment. Through the microbial community analysis, it was found that the strong symbiotic structure of the microbial community in the early stage provided favorable conditions for the formation of CH4 in sediments. The results of this study can clarify the formation mechanism of biological fluid sediment and provide help for understanding the effect of biogas and secretions on the sediment properties in shallow lakes.

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“…Analysis was conducted at 25 °C with Fourier transform infrared spectroscopy (FTIR, IR Affinity-1, Shimadzu, Japan) to record the functional group composition of the two EPS subfractions. A total of 25 scans with a resolution of 4 cm -1 and a scanning range of 500-4000 cm -1 were performed (Yang et al, 2018). The atmosphere was used as a blank, and the transmittance of air was subtracted for each testing sample.…”

Section: Eps Analysis and Determinationmentioning

confidence: 99%

Dynamics of extracellular polymeric substances and soil organic carbon with mangrove zonation along a continuous tidal gradient

et al. 2022

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The importance of mangroves in blue carbon storage has been widely reported. However, the potential contribution of microbial extracellular polymeric substances (EPS) to the carbon pool is still poorly understood in mangrove ecosystems. Thus, a natural mangrove reserve located in Gaoqiao was chosen to investigate the linkage between microbial EPS and sediment organic carbon. Sequential resin extraction, Fourier transform infrared spectroscopy (FTIR), and 16S high-throughput sequencing were employed to determine the variations in EPS and bacterial taxa in different mangrove communities. Both EPS and EPS-C increased significantly with mangrove zonation from seaward to landward, irrespective of the EPS subfractions (colloidal and bound EPS) and components (extracellular protein and polysaccharide). Moreover, both EPS and EPS-C were found to be positively correlated with soil organic carbon. The present data further showed that EPS-C accounted for 1.84~10.69% of TOC in surface sediments. Multiple functional groups (e.g., O-H, N-H, and C=O), which may provide ligands for particle adsorption and complexation, were identified by FTIR. Consistent with the ascend of EPS with mangrove zonation from seaward to landward, the highest transmittance intensity for all functional groups was consistently exhibited in EPS isolated from landward Rhizophoraceae forest. In addition, the present data also indicated an interesting positive linkage between EPS and the abundance of some specific bacterial taxa, such as Rhizobiales, Corynebacteriales, and Gaiellales. In summary, this study claims the importance of EPS in the carbon pool in mangrove ecosystems. The present study may provide a better understanding of the functions of mangroves in carbon stocks.

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Overproduction of microbial extracellular polymeric substances in subtropical intertidal sediments in response to endocrine disrupting chemicals

Cited by 19 publications

References 55 publications

Pre-study of the evaluation of ecological sessile succession and their relationship with bacteria on concrete artificial reef material

Pre-study of the evaluation of ecological sessile succession and their relationship with bacteria on concrete artificial reef material

Important Role of Biogas and Secretions in the Formation of Biological Fluid Sediment under Cyanobacterial Bloom Biomass Degradation

Dynamics of extracellular polymeric substances and soil organic carbon with mangrove zonation along a continuous tidal gradient

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