scholarly journals Functional metabolic diversity of the bacterial community in undisturbed resource island soils in the southern Sonoran Desert

2018 ◽  
Vol 29 (5) ◽  
pp. 1467-1477 ◽  
Author(s):  
D. Edisa Garcia ◽  
Blanca R. Lopez ◽  
Luz E. de-Bashan ◽  
Ann M. Hirsch ◽  
Maskit Maymon ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Sonoran Desert ◽  
Metabolic Diversity ◽  
Resource Island

Characterization of microbial communities from rumen and large intestine of lactating creole goats grazing in arid plant communities

Microbiology ◽  
2021 ◽  
Vol 167 (10) ◽  
Author(s):  
Aarón Barraza ◽  
Juan J. Montes-Sánchez ◽  
M. Goretty Caamal-Chan ◽  
Abraham Loera-Muro
Keyword(s):  
Bacterial Community ◽  
Microbial Communities ◽  
Plant Communities ◽  
Large Intestine ◽  
Bacterial Communities ◽  
Sonoran Desert ◽  
Rainy Season ◽  
Native Plant ◽  
Content Type ◽  
Link Type

Arid plant communities provide variable diets that can affect digestive microbial communities of free-foraging ruminants. Thus, we used next-generation sequencing of 16S and 18S rDNA to characterize microbial communities in the rumen (regurgitated digesta) and large intestine (faeces) and diet composition of lactating creole goats from five flocks grazing in native plant communities in the Sonoran Desert in the rainy season. The bacterial communities in the rumen and large intestine of the five flocks had similar alpha diversity (Chao1, Shannon, and Simpson indices). However, bacterial community compositions were different: a bacterial community dominated by Proteobacteria in the rumen transitioned to a community dominated by Firmicutes in the large intestine. Bacterial communities of rumen were similar across flocks; similarly occurred with large-intestine communities. Archaea had a minimum presence in the goat digestive tract. We detected phylum Basidiomycota, Ascomycota, and Apicomplexa as the main fungi and protozoa. Analyses suggested different diet compositions; forbs and grasses composed the bulk of plants in the rumen and forbs and shrubs in faeces. Therefore, lactating goats consuming different diets in the Sonoran Desert in the rainy season share a similar core bacterial community in the rumen and another in the large intestine and present low archaeal communities.

scholarly journals Erratum: Furtak, K., et al. Analysis of Soil Properties, Bacterial Community Composition, and Metabolic Diversity in Fluvisols of a Floodplain Area. Sustainability 2019, 11, 3929

2019 ◽  
Vol 11 (21) ◽  
pp. 6020 ◽  
Author(s):  
Karolina Furtak ◽  
Jarosław Grządziel ◽  
Anna Gałązka ◽  
Jacek Niedźwiecki
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Metabolic Diversity ◽  
Floodplain Area ◽  
Published Paper

The authors would like to make the following correction about the published paper [...]

scholarly journals Spatio-temporal Variations in the Physiological Profiles of Streambed Bacterial Communities: Implication of Wastewater Treatment Plant Effluents

2021 ◽  
Author(s):  
Philips O Akinwole ◽  
Amerti Guta ◽  
Madeline Draper ◽  
Sophia Atkinson
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Microbial Biomass ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Physicochemical Parameters ◽  
Bacterial Community Structure ◽  
Metabolic Diversity ◽  
Physiological Profiles ◽  
Receiving Water

Abstract The effluents of wastewater treatment plants (WWTPs) represent a complex mixture of nutrients and toxic substances, thus, the potential exists for the effluents to significantly impact the biochemical characteristics and bacterial communities of the receiving water. We examined spatial and seasonal patterns, and the impact of effluents on microbial biomass, bacterial community structure, and metabolic diversity on a fourth-order stream. We took triplicate sediment samples at five different locations along a 5,000m transect over three sampling periods. We quantified bacterial community structure as community-level physiological profiles and biomass with phospholipid phosphate analysis. Our findings highlight the worrisome impacts of effluents on microbial biomass and bacterial metabolic diversity on the receiving water. Microbial biomass was significantly higher at the WWTP outfall compared to upstream and downstream sites and correlated positively with sediment physicochemical parameters. Furthermore, our data revealed significant spatial differences in bacterial community structure in the context of WWTP impact. High nutrient availability (lower carbon/nitrogen ratios) at the outfall increased site-specific bacterial metabolic diversity in winter but decreased the same in fall. Seasonal changes in the sedimentary microbial biomass and bacterial carbon substrate utilization were evident regardless of the spatial variations or impacts of the wastewater effluents. Communities in fall showed more versatile substrate utilization patterns than the winter communities. These results suggest that WWTP effluents significantly increased microbial biomass and highlight its mixed effects on bacterial community structure and metabolic diversity. Also, our data underscore a close association between sedimentary physicochemical parameters and the associated microbial functional activities.

scholarly journals Bacterial community profiles andVibrio parahaemolyticusabundance in individual oysters and their association with estuarine ecology

2017 ◽  
Author(s):  
Ashley L. Marcinkiewicz ◽  
Brian M. Schuster ◽  
Stephen H. Jones ◽  
Vaughn S. Cooper ◽  
Cheryl A. Whistler
Keyword(s):  
Bacterial Community ◽  
New Hampshire ◽  
Vibrio Parahaemolyticus ◽  
Microbial Interactions ◽  
Most Probable Number ◽  
Metabolic Diversity ◽  
Probable Number ◽  
Bacterial Phyla ◽  
Great Bay Estuary ◽  
Estuarine Ecology

ABSTRACTOysters naturally harbor the human gastric pathogenVibrio parahaemolyticus, but the nature of this association is unknown. Because microbial interactions could influence the accumulation ofV. parahaemolyticusin oysters, we investigated the composition of the microbiome in water and oysters at two ecologically unique sites in the Great Bay Estuary, New Hampshire using 16s rRNA profiling. We then evaluated correlations between bacteria inhabiting the oyster withV. parahaemolyticusabundance quantified using a most probable number (MPN) analysis. Even though oysters filter-feed, their microbiomes were not a direct snapshot of the bacterial community in overlaying water, suggesting they selectively accumulate some bacterial phyla. The microbiome of individual oysters harvested more centrally in the bay were relatively more similar to each other and had fewer unique phylotypes, but overall more taxonomic and metabolic diversity, than the microbiomes from tributary-harvested oysters that were individually more variable with lower taxonomic and metabolic diversity. Oysters harvested from the same location varied inV. parahaemolyticusabundance, with the highest abundance oysters collected from one location. This study, which to our knowledge is the first of its kind to evaluate associations ofV. parahaemolyticusabundance with members of individual oyster microbiomes, implies that sufficient sampling and depth of sequencing may reveal microbiome members that could impactV. parahaemolyticusabundance.

scholarly journals Early Changes in Soil Metabolic Diversity and Bacterial Community Structure in Sugarcane under Two Harvest Management Systems

2015 ◽  
Vol 39 (3) ◽  
pp. 701-713 ◽  
Author(s):  
Lucas Carvalho Basilio Azevedo ◽  
Marcio Morais ◽  
Marcio Rodrigues Lambais
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Bacterial Community ◽  
Management System ◽  
Bacterial Community Structure ◽  
Substrate Utilization ◽  
Soil Samples ◽  
Management Systems ◽  
Harvest Management ◽  
Metabolic Diversity

Preharvest burning is widely used in Brazil for sugarcane cropping. However, due to environmental restrictions, harvest without burning is becoming the predominant option. Consequently, changes in the microbial community are expected from crop residue accumulation on the soil surface, as well as alterations in soil metabolic diversity as of the first harvest. Because biological properties respond quickly and can be used to monitor environmental changes, we evaluated soil metabolic diversity and bacterial community structure after the first harvest under sugarcane management without burning compared to management with preharvest burning. Soil samples were collected under three sugarcane varieties (SP813250, SP801842 and RB72454) and two harvest management systems (without and with preharvest burning). Microbial biomass C (MBC), carbon (C) substrate utilization profiles, bacterial community structure (based on profiles of 16S rRNA gene amplicons), and soil chemical properties were determined. MBC was not different among the treatments. C-substrate utilization and metabolic diversity were lower in soil without burning, except for the evenness index of C-substrate utilization. Soil samples under the variety SP801842 showed the greatest changes in substrate utilization and metabolic diversity, but showed no differences in bacterial community structure, regardless of the harvest management system. In conclusion, combined analysis of soil chemical and microbiological data can detect early changes in microbial metabolic capacity and diversity, with lower values in management without burning. However, after the first harvest, there were no changes in the soil bacterial community structure detected by PCR-DGGE under the sugarcane variety SP801842. Therefore, the metabolic profile is a more sensitive indicator of early changes in the soil microbial community caused by the harvest management system.

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.

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