Colonization Characteristics of Bacterial Communities on Plastic Debris Influenced by Environmental Factors and Polymer Types in the Haihe Estuary of Bohai Bay, China

2019 ◽  
Vol 53 (18) ◽  
pp. 10763-10773 ◽  
Author(s):  
Wenjie Li ◽  
Ying Zhang ◽  
Nan Wu ◽  
Ze Zhao ◽  
Wei’an Xu ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Bacterial Communities ◽  
Bohai Bay ◽  
Plastic Debris

Colonization characteristics of bacterial communities on plastic debris: The localization of immigrant bacterial communities

2021 ◽  
Vol 193 ◽  
pp. 116883
Author(s):  
Xiaohan Zhang ◽  
Ying Zhang ◽  
Nan Wu ◽  
Wenjie Li ◽  
Xiaocui Song ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Plastic Debris

scholarly journals Effects of Plastic Debris on the Biofilm Bacterial Communities in Lake Water

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1465
Author(s):  
Chao Shen ◽  
Liuyan Huang ◽  
Guangwu Xie ◽  
Yulai Wang ◽  
Zongkai Ma ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
Diversity Index ◽  
Plastic Substrate ◽  
Simpson Index ◽  
Plastic Debris ◽  
Plastic Substrates ◽  
Wiener Diversity Index

Increasing discharge of plastic debris into aquatic ecosystems and the worsening ecological risks have received growing attention. Once released, plastic debris could serve as a new substrate for microbes in waters. The complex relationship between plastics and biofilms has aroused great interest. To confirm the hypothesis that the presence of plastic in water affects the composition of biofilm in natural state, in situ biofilm culture experiments were conducted in a lake for 40 days. The diversity of biofilm attached on natural (cobble stones (CS) and wood) and plastic substrates (Polyethylene terephthalate (PET) and Polymethyl methacrylate (PMMA)) were compared, and the community structure and composition were also analyzed. Results from high-throughput sequencing of 16S rRNA showed that the diversity and species richness of biofilm bacterial communities on natural substrate (observed species of 1353~1945, Simpson index of 0.977~0.989 and Shannon–Wiener diversity index of 7.42~8.60) were much higher than those on plastic substrates (observed species of 900~1146, Simpson index of 0.914~0.975 and Shannon–Wiener diversity index of 5.47~6.99). The NMDS analyses were used to confirm the taxonomic significance between different samples, and Anosim (p = 0.001, R = 0.892) and Adonis (p = 0.001, R = 808, F = 11.19) demonstrated that this classification was statistically rigorous. Different dominant bacterial communities were found on plastic and natural substrates. Alphaproteobacterial, Betaproteobacteria and Synechococcophycideae dominated on the plastic substrate, while Gammaproteobacteria, Phycisphaerae and Planctomycetia played the main role on the natural substrates. The bacterial community structure of the two substrates also showed significant difference which is consistent with previous studies using other polymer types. Our results shed light on the fact that plastic debris can serve as a new habitat for biofilm colonization, unlike natural substrates, pathogens and plastic-degrading microorganisms selectively attached to plastic substrates, which affected the bacterial community structure and composition in aquatic environment. This study provided a new insight into understanding the potential impacts of plastics serving as a new habitat for microbial communities in freshwater environments. Future research should focus on the potential impacts of plastic-attached biofilms in various aquatic environments and the whole life cycle of plastics (i.e., from plastic fragments to microplastics) and also microbial flock characteristics using microbial plastics in the natural environment should also be addressed.

scholarly journals Aquatic Bacterial Communities Associated With Land Use and Environmental Factors in Agricultural Landscapes Using a Metabarcoding Approach

2018 ◽  
Vol 9 ◽  
Author(s):  
Wen Chen ◽  
Graham Wilkes ◽  
Izhar U. H. Khan ◽  
Katarina D. M. Pintar ◽  
Janis L. Thomas ◽  
...  
Keyword(s):  
Land Use ◽  
Environmental Factors ◽  
Bacterial Communities ◽  
Agricultural Landscapes

scholarly journals Ocean acidification alters bacterial communities on marine plastic debris

2020 ◽  
Vol 161 ◽  
pp. 111749
Author(s):  
Ben P. Harvey ◽  
Dorsaf Kerfahi ◽  
YeonGyun Jung ◽  
Jae-Ho Shin ◽  
Jonathan M. Adams ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Bacterial Communities ◽  
Plastic Debris ◽  
Marine Plastic Debris

scholarly journals Plant Growth Promotion Potential Is Equally Represented in Diverse Grapevine Root-Associated Bacterial Communities from Different Biopedoclimatic Environments

2013 ◽  
Vol 2013 ◽  
pp. 1-17 ◽  
Author(s):  
Ramona Marasco ◽  
Eleonora Rolli ◽  
Marco Fusi ◽  
Ameur Cherif ◽  
Ayman Abou-Hadid ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Plant Growth ◽  
Bacterial Communities ◽  
Growth Promotion ◽  
Rrna Gene ◽  
Similar Distribution ◽  
Bacterial Assemblage ◽  
Pgp Traits ◽  
Associated Bacteria

Plant-associated bacteria provide important services to host plants. Environmental factors such as cultivar type and pedoclimatic conditions contribute to shape their diversity. However, whether these environmental factors may influence the plant growth promoting (PGP) potential of the root-associated bacteria is not widely understood. To address this issue, the diversity and PGP potential of the bacterial assemblage associated with the grapevine root system of different cultivars in three Mediterranean environments along a macrotransect identifying an aridity gradient were assessed by culture-dependent and independent approaches. According to 16S rRNA gene PCR-DGGE, the structure of endosphere and rhizosphere bacterial communities was highly diverse (P=0.03) and was associated with a cultivar/latitudinal/climatic effect. Despite being diverse, the bacterial communities associated with Egyptian grapevines shared a higher similarity with the Tunisian grapevines than those cultivated in North Italy. A similar distribution, according to the cultivar/latitude/aridity gradients, was observed for the cultivable bacteria. Many isolates (23%) presentedin vitromultiple stress resistance capabilities and PGP activities, the most frequent being auxin synthesis (82%), insoluble phosphate solubilisation (61%), and ammonia production (70%). The comparable numbers and types of potential PGP traits among the three different environmental settings indicate a strong functional homeostasis of beneficial bacteria associated with grape root.

Structural analysis of the essential environmental factors associated with the marine meiofauna

2018 ◽  
Vol 79 (3) ◽  
pp. 566-572 ◽  
Author(s):  
Qingtian Zhang ◽  
Guikun Hu
Keyword(s):  
Structural Analysis ◽  
Environmental Factors ◽  
Northern China ◽  
Bohai Bay ◽  
Simple Correlation ◽  
Sediment Grain Size ◽  
Biogeochemical Study ◽  
Chemical Factors ◽  
Level 1 ◽  
Complex Relationships

Abstract A biogeochemical study was carried out from 2006 to 2007 in Bohai Bay, northern China, to investigate meiofauna and a number of environmental factors. A total of 18 environmental factors were selected to study their interrelations using Interpretive Structural Analysis. The results showed that these environmental factors could be divided into five levels according to their degree of impact; the results also showed clear links among these factors. The six factors designated as Level 1 included both biological and chemical factors. The other factors had indirect effects on meiofauna and affect these six factors in different ways. There was single factor, sediment grain size, in the fifth level. The structural analysis of the essential factors gave us more information than simple correlation analysis did. Both the water and sediment factors influenced the benthos community. The result is helpful in understanding the complex relationships between environmental factors, and could be used to grasp the main causes and their environmental linkages with further studies; it would be a good basis for integrative environmental management.

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