Patterns and assembly processes of planktonic and sedimentary bacterial community differ along a trophic gradient in freshwater lakes

2019 ◽  
Vol 106 ◽  
pp. 105491 ◽  
Author(s):  
Jin Zeng ◽  
Congcong Jiao ◽  
Dayong Zhao ◽  
Huimin Xu ◽  
Rui Huang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Trophic Gradient ◽  
Freshwater Lakes

scholarly journals Bacterial Community Analysis of Two Neighboring Freshwater Lakes Originating from One Lake

2020 ◽  
Vol 30 (1) ◽  
pp. 111-117
Author(s):  
Dabin Guo ◽  
Jiechao Liang ◽  
Wei Chen ◽  
Jian Wang ◽  
Bin Ji ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Analysis ◽  
Freshwater Lakes

scholarly journals Epiphyton as a Niche for Ammonia-Oxidizing Bacteria: Detailed Comparison with Benthic and Pelagic Compartments in Shallow Freshwater Lakes

2008 ◽  
Vol 74 (7) ◽  
pp. 1963-1971 ◽  
Author(s):  
M. Coci ◽  
P. L. E. Bodelier ◽  
H. J. Laanbroek
Keyword(s):  
Bacterial Community ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Submerged Macrophytes ◽  
Bacterial Community Composition ◽  
Detailed Comparison ◽  
Ammonia Oxidizing Bacteria ◽  
Freshwater Lakes ◽  
Gradient Gel Electrophoresis ◽  
Potential Activity ◽  
Nitrosomonas Oligotropha

ABSTRACT Next to the benthic and pelagic compartments, the epiphyton of submerged macrophytes may offer an additional niche for ammonia-oxidizing bacteria in shallow freshwater lakes. In this study, we explored the potential activities and community compositions of ammonia-oxidizing bacteria of the epiphytic, benthic, and pelagic compartments of seven shallow freshwater lakes which differed in their trophic status, distribution of submerged macrophytes, and restoration history. PCR-denaturing gradient gel electrophoresis analyses demonstrated that the epiphytic compartment was inhabited by species belonging to cluster 3 of the Nitrosospira lineage and to the Nitrosomonas oligotropha lineage. Both the ammonia-oxidizing bacterial community compositions and the potential activities differed significantly between compartments. Interestingly, both the ammonia-oxidizing bacterial community composition and potential activity were influenced by the restoration status of the different lakes investigated.

scholarly journals Bacterial community composition and potential controlling mechanisms along a trophic gradient in a barrier reef system

2010 ◽  
Vol 60 (1) ◽  
pp. 15-28 ◽  
Author(s):  
MG Weinbauer ◽  
ME Kerros ◽  
C Motegi ◽  
IC Wilhartitz ◽  
F Rassoulzadegan ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Barrier Reef ◽  
Trophic Gradient ◽  
Reef System

Analysis of the Bacterial Community by 454 Pyrosequencing in Two Freshwater Lakes: Yangcheng Lake and Taihu Lake in China

2013 ◽  
Vol 788 ◽  
pp. 315-320
Author(s):  
Fei Bai ◽  
Si Yu Zeng ◽  
Dan Li ◽  
Yuan Li ◽  
Miao He
Keyword(s):  
Bacterial Community ◽  
Bacterial Community Structure ◽  
454 Pyrosequencing ◽  
Taihu Lake ◽  
Harmful Algae ◽  
Freshwater Lakes ◽  
Algae Bloom ◽  
Operational Taxonomic Units ◽  
Pyrosequencing Method

Have a good understanding of the bacterial community structure, especially the cyanobacteria composition, works for clarifying the overall process of harmful algae bloom in freshwater lakes. In this study, the 454 pyrosequencing method was used to investigate the bacterial community in two typical freshwater lakes of China: Yangcheng Lake and Taihu Lake. A total of 30,663 16S rRNA reads were generated from 9 samples and assigned to 3,547 operational taxonomic units (OTUs) which represented 18 recognized phyla. For Yangcheng Lake, the dominant species in both July and early September were Proteobacteria, Actinobacteria, Bacteroidetes and Cyanobacteria. Taihu Lake had the same top three dominant phyla, but with smaller proportion of cyanobacteria. With regard to genus level of cyanobacteria, there were 5 genera which contained toxin-producing ones were identified in Yangcheng Lake, which manifested higher risk for long-term harmful algae injury. The constant level of cyanobacteria proportion from pre-bloom period to forthcoming period indicated that the proliferation of cyanobacteria quantity is more a sudden process not a gradual growth pattern. Only 3 genera were found in Taihu Lake and higher background amount of Microcystis in May of Taihu Lake made it more liable to suffer harmful algae bloom.

scholarly journals Neutral community model explains the bacterial community assembly in freshwater lakes

2015 ◽  
Vol 91 (11) ◽  
pp. fiv125 ◽  
Author(s):  
Adélaïde Roguet ◽  
Grégory S. Laigle ◽  
Claire Therial ◽  
Adèle Bressy ◽  
Frédéric Soulignac ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Assembly ◽  
Freshwater Lakes ◽  
Community Model

Assessment of viral assemblages in different types of wetland water in northeast China using RAPD-PCR

2020 ◽  
Vol 85 ◽  
pp. 183-196
Author(s):  
Y Sun ◽  
J Liu ◽  
Q Yao ◽  
J Jin ◽  
X Liu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Water Samples ◽  
Northeast China ◽  
Bacterial Community Composition ◽  
Freshwater Wetlands ◽  
Viral Community ◽  
Rapd Pcr ◽  
Wetland Water ◽  
Different Types ◽  
Viral Communities

Viruses are the most abundant and ubiquitous biological entities in various ecosystems, yet few investigations of viral communities in wetlands have been performed. To address this data gap, water samples from 6 wetlands were randomly collected across northeast China; viruses in the water were concentrated by sequential tangential flow filtration, and viral communities were assessed through randomly amplified polymorphic DNA-PCR (RAPD-PCR) with 4 decamer oligonucleotide primers. Principal coordinate analysis and hierarchical clustering analysis of the DNA fingerprints showed that viral community compositions differed among the water samples: communities in the 2 coastal wetlands were more similar to each other than to those in the 4 freshwater wetlands. The Shannon-Weaver index (H) and evenness index (E) of the RAPD-PCR fingerprint also differed among the 6 wetlands. Mantel test revealed that the changes in viral communities in wetland water were most closely related to the water NH4+-N and inorganic C content, followed by total K, P, C and NO3--N. DNA sequence analysis of the excised bands revealed that viruses accounted for ~40% of all sequences. Among the hit viral homologs, the majority belonged to the Microviridae. Moreover, variance partitioning analysis showed that the viral community contributed 24.58% while environmental factors explained 30.56% of the bacterial community variation, indicating that the bacterial community composition was strongly affected by both viral community and water variables. This work provides an initial outline of the viral communities from different types of wetlands in northeast China and improves our understanding of the viral diversity in these ecosystems.

Temporally invariable bacterial community structure in the Arabian Sea oxygen minimum zone

2014 ◽  
Vol 73 (1) ◽  
pp. 51-67 ◽  
Author(s):  
A Jain ◽  
M Bandekar ◽  
J Gomes ◽  
D Shenoy ◽  
RM Meena ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Community Structure ◽  
Arabian Sea ◽  
Oxygen Minimum Zone ◽  
Minimum Zone ◽  
Oxygen Minimum
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