Suspended particles phoD alkaline phosphatase gene diversity in large shallow eutrophic Lake Taihu

Zhang, Tingxi; Mengyao, Qin; Wei, Chao; Li, Defang; Lu, Xiaoran; Zhang, Limin

doi:10.1016/j.scitotenv.2020.138615

Cited by 39 publications

(14 citation statements)

References 75 publications

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“…Proteobacteria (Alpha-, Beta- and Gammaproteobacteria) and Actinobacteria predominated in the sediment of the Pomacocha and Tranca Grande lagoons, which are in a mesotrophic state. Cyanobacteria is a phylum that performs photosynthesis, play a key role in nutrient cycling and are probably responsible for eutrophication processes in water bodies 42 . In this study, we found that Cyanobacteria predominate in sediments of the Tipicocha lagoon, which is in a mesotrophic-eutrophic state, a trophic state reported in previous studies 2 This observation agrees with the study of Shen et al 43 , who found large differences in the taxonomic structures of microbial communities in eutrophic, mesotrophic and oligotrophic aquatic environments.…”

Section: Discussionmentioning

confidence: 99%

Microbial diversity in intensively farmed lake sediment contaminated by heavy metals and identification of microbial taxa bioindicators of environmental quality

Custodio

Espinoza

Peñaloza

et al. 2022

Sci Rep

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The cumulative effects of anthropogenic stress on freshwater ecosystems are becoming increasingly evident and worrisome. In lake sediments contaminated by heavy metals, the composition and structure of microbial communities can change and affect nutrient transformation and biogeochemical cycling of sediments. In this study, bacterial and archaeal communities of lake sediments under fish pressure contaminated with heavy metals were investigated by the Illumina MiSeq platform. Despite the similar content of most of the heavy metals in the lagoon sediments, we found that their microbial communities were different in diversity and composition. This difference would be determined by the resilience or tolerance of the microbial communities to the heavy metal enrichment gradient. Thirty-two different phyla and 66 different microbial classes were identified in sediment from the three lagoons studied. The highest percentages of contribution in the differentiation of microbial communities were presented by the classes Alphaproteobacteria (19.08%), Cyanophyceae (14.96%), Betaproteobacteria (9.01%) y Actinobacteria (7.55%). The bacteria that predominated in sediments with high levels of Cd and As were Deltaproteobacteria, Actinobacteria, Coriobacteriia, Nitrososphaeria and Acidobacteria (Pomacocha), Alphaproteobacteria, Chitinophagia, Nitrospira and Clostridia (Tipicocha) and Betaproteobacteria (Tranca Grande). Finally, the results allow us to expand the current knowledge of microbial diversity in lake sediments contaminated with heavy metals and to identify bioindicators taxa of environmental quality that can be used in the monitoring and control of heavy metal contamination.

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Section: Discussionmentioning

confidence: 99%

Microbial diversity in intensively farmed lake sediment contaminated by heavy metals and identification of microbial taxa bioindicators of environmental quality

Custodio

Espinoza

Peñaloza

et al. 2022

Sci Rep

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“…A high genetic diversity of the phoD-harboring bacterial community in sediments was noted, with Actinobacteria, Proteobacteria and Planctomycetes being dominant phyla and Pseudonocardia and Friedmanniella being dominant genera. The dominant bacterial phyla and genera in the phoDharboring bacterial community in sediments of Sancha Lake were different from those in the Pearl Riverand and in Lake Alchichica, Mexico 36,37 , but similar to those in the sediment of Lake Chaohu and in suspended particles in Taihu Lake 15,17 .…”

Section: Discussionmentioning

confidence: 78%

“…It was found that Actinobacteria, Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria were dominant bacterial classes. Zhang et al 15 applied uorescence quantitative PCR and high-throughput sequencing to study the spatial and temporal distribution features of bacterial phoD gene in suspended particles in Taihu Lake. It was found that the dominant phoD-harboring phylum in all samples was Actinobacteria, followed by Proteobacteria, Cyanobacteria and Gemmatimonadetes.…”

Section: Discussionmentioning

confidence: 99%

“…In the past, phoD gene in soil and marine ecosystems was reported in most studies, but phoD gene in the freshwater lake systems was seldom studied. The studies of suspended particles phoD alkaline phosphatase gene diversity, effects of cyanobacterial growth and decline on the phoD-harboring bacterial community structure, and changes of phoD gene community in sediments in different seasons have been conducted in the shallow freshwater lake systems [15][16][17] . No researches have been conducted on the diversity of phoD gene and its relationship with eutrophication in the sediments from sub-deep freshwater lake systems.…”

Section: Introductionmentioning

confidence: 99%

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Diversity of the phoD Gene Encoding Alkaline Phosphatase in Sediment of Sancha Lake and Its Relationship with Environmental Factors

Liu

et al. 2022

Preprint

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The bacterial phoD gene encoding alkaline phosphatase (ALP) plays animportant role in the release of soluble reactive phosphorus (SRP) from organic phosphorus in environmental systems. However, phoD gene diversity in the sediments of the sub-deep freshwater lakes with eutrophication is poorly understood. In the present study, we sampled the sediments and the overlying water of Sancha Lake, a typical eutrophic sub-deep freshwater lake in China, in April (spring) and November (autumn), 2017. High-throughput sequencing and qPCR were performed to analyze the bacterial phoD gene in the sediments. The diversity and abundance of the phoD gene and the bacterial community structure based on this gene were characterized. We further discussed the relationships between the diversity and abundance of the phoD gene and environmental factors. A total of 881,717 valid sequences were obtained from 18 samples and were classified into 41 genera, 31 families, 23 orders, 12 classes, and 9 phyla and grouped into 477 OTUs. The dominant phyla were Proteobacteria and Actinobacteria. The phylogenetic tree based on the sequences of the phoD gene was plotted and composed of three branches. The genetic sequences were aligned predominantly with genera Pseudomonas, Streptomyces, Cupriavidus, and Paludisphaer. The phoD-harboring bacterial community structure showed a significant difference in spring and autumn, but no apparent spatial heterogeneity. Significant spatial heterogeneity and seasonal changes were observed in phoD gene abundance. pH value, dissolved oxygen (DO), total organic carbon (TOC), ALP, and phosphorus were important environmental factors affecting the diversity of the phoD gene and the phoD-harboring bacterial community structure. Changes in phoD-harboring bacterial community structure, phoD gene abundance, and ALP activity were negatively correlated with SRP in overlying water. Our study indicated phoD-harboring bacteria in the sediments of Sancha Lake with the characteristics of high diversity and significant spatial and temporal heterogeneity in abundance and community structure, which played a crucial role in the release of SRP.

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“…The accumulation and transportation of sediments such as silts, have a great impact on the stability of the estuarine and seacoast [13,14]. Therefore, the development of effective detection and accurate classification and identification of these different suspended particles is of farreaching significance [15,16]. At the same time, the detected particle information is also helpful to interpret the data of marine science macroscopic researches, and further, promote the development of remote sensing in marine monitoring [17,18].…”

Section: Introductionmentioning

confidence: 99%

Optimized Classification of Suspended Particles in Seawater by Dense Sampling of Polarized Light Pulses

Guo

Deng

et al. 2021

Sensors

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Suspended particles affect the state and vitality of the marine ecosystem. In situ probing and accurately classifying the suspended particles in seawater have an important impact on ecological research and environmental monitoring. Individual measurement of the optical polarization parameters scattered by the suspended particles has been proven to be a powerful tool to classify the particulate compositions in seawater. In previous works, the temporal polarized light pulses are sampled and averaged to evaluate the polarization parameters. In this paper, a method based on dense sampling of polarized light pulses is proposed and the experimental setup is built. The experimental results show that the dense sampling method optimizes the classification and increases the average accuracy by at least 16% than the average method. We demonstrate the feasibility of dense sampling method by classifying the multiple types of particles in mixed suspensions and show its excellent generalization ability by multi-classification of the particles. Additional analysis indicates that the dense sampling method basically takes advantage of the high-quality polarization parameters to optimize the classification performance. The above results suggest that the proposed dense sampling method has the potential to probe the suspended particles in seawater in red-tide early warning, as well as sediment and microplastics monitoring.

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Suspended particles phoD alkaline phosphatase gene diversity in large shallow eutrophic Lake Taihu

Cited by 39 publications

References 75 publications

Microbial diversity in intensively farmed lake sediment contaminated by heavy metals and identification of microbial taxa bioindicators of environmental quality

Microbial diversity in intensively farmed lake sediment contaminated by heavy metals and identification of microbial taxa bioindicators of environmental quality

Diversity of the phoD Gene Encoding Alkaline Phosphatase in Sediment of Sancha Lake and Its Relationship with Environmental Factors

Optimized Classification of Suspended Particles in Seawater by Dense Sampling of Polarized Light Pulses

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