The Saltpan Microbiome Is Structured by Sediment Depth and Minimally Influenced by Variable Hydration

Weingarten, Eric A.; Lawson, Lauren A.; Jackson, Colin R.

doi:10.3390/microorganisms8040538

Cited by 9 publications

(2 citation statements)

References 98 publications

(118 reference statements)

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“…This was calculated using the corr.axes function in mothur. Spearman correlations assess the relationship between variables and dissimilarity in samples, and effect sizes >0.80 were considered large enough to be considered important based on previous analyses (Weingarten et al., 2020). Geographical distance between sites was calculated by measuring the shortest linear distance.…”

Section: Methodsmentioning

confidence: 99%

The gut bacterial microbiome of the Threeridge mussel, Amblema plicata, varies between rivers but shows a consistent core community

2022

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1. Freshwater mussels are important for nutrient cycling and ecosystem health as they filter feed on their surrounding water. This filter feeding makes these bivalves especially sensitive to conditions in their environment. Gut microbial communities (microbiomes) have been recognised as important to both host organism and ecosystem health; however, how freshwater mussel microbiomes are organised and influenced is unclear.2. In this study, the gut bacterial microbiome of Threeridge mussel, Amblema plicata, was compared across two river basins, five rivers, and nine local sites in the south-eastern U.S.A. Mussel gut tissue was dissected, DNA extracted, and the microbiome characterised by high throughput sequencing of the V4 region of the 16S ribosomal RNA gene.3. Planctomycetes, Firmicutes, and Cyanobacteria were the most common bacterial phyla within the guts of all sampled A. plicata. However, the relative abundances of these major bacterial phyla differed between mussels sampled from different rivers and river basins, as did the relative abundance of specific bacterial operational taxonomic units (OTUs). Despite these differences, a core microbiome was identified across all mussels, with eight OTUs being consistent members of the A. plicata microbiome at all sites, the most abundant OTU identifying as a member of the family Planctomycetaceae. Geographic distance between sites was not correlated with similarity in the structure of the gut microbiome, which was more related to site physicochemistry. 4. Overall, these results suggest that while physicochemical conditions affect the composition of transient bacteria in the Threeridge mussel gut microbiome, the core microbiome is largely unaffected, and a portion of the A. plicata microbiome is retained regardless of the river system. 5. How long transient bacteria remain in the gut, and to what extent these transient microbes aid in host function is still unknown. Core microbiota have been foundto aid in multiple functions within animal hosts, and within freshwater mussels this core microbiome may aid in nutrient processing and cycling. Therefore, it is important to look at both transient and core microbes when studying the structure of freshwater invertebrate microbiomes.

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Section: Methodsmentioning

confidence: 99%

The gut bacterial microbiome of the Threeridge mussel, Amblema plicata, varies between rivers but shows a consistent core community

2022

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“…In fact, saltpans are ephemeral wetland with high concentration of salt and low amount of nutrients. They are the result of alternating periods of inundation and desiccation [ 6 ] . This extreme environment harbors many novel microorganisms, including Actinobacteria strains, able to synthesize different bioactive compounds.…”

Section: Introductionmentioning

confidence: 99%

Taxonomic Characterization, Antiviral Activity and Induction of Three New Kenalactams in Nocardiopsis sp. CG3

et al. 2022

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Exploration of secondary metabolites secreted by new Actinobacteria taxa isolated from unexplored areas, can increase the possibility to obtain new compounds which can be developed into new drugs for the treatment of serious diseases such as hepatitis C. In this context, one actinobacterial strain, CG3, has been selected based on the results of polyphasic characterization, which indicate that it represents a new putative species within the genus Nocardiopsis. Two fractions (F2 and F3), prepared from the culture of strain CG3 in soybean medium, exhibited a pronounced antiviral activity against the HCV strain Luc-Jc1. LC–HRESIMS analysis showed different bioactive compounds in both active fractions (F2 and F3), including five polyenic macrolactams (kenalactams A-E), three isoflavone metabolites, along with mitomycin C and one p-phenyl derivative. Furthermore, feeding with 1% of methionine, lysine or alanine as a unique nitrogen source, induced the production of three novel kenalactam derivatives.

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Pelagerythrobacter

Han

Sun

2023

Bergey's Manual of Systematics of Archaea and Bacteria

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Pe.lag.e.ry.thro.bac'ter. L. neut. n. pelagus , the sea; N.L. masc. n. Erythrobacter , a genus name; N.L. masc. n. Pelagerythrobacter , Erythrobacter from the sea. Pseudomonadota / Alphaproteobacteria / Sphingomonadales / Erythrobacteraceae / Pelagerythrobacter The genus Pelagerythrobacter belonging to the family Erythrobacteraceae currently comprises four species with validly published names: Pelagerythrobacter aerophilus , P . marensis , P . marinus , and P . rhizovicinus . Members of Pelagerythrobacter inhabit various environments, such as surface and deep seawater as well as rhizosphere soil of a desert xerophyte. Cells are Gram‐stain‐negative and several members are motile by a polar flagellum. The main respiratory quinone is ubiquinone‐10. The major polar lipids are phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG), and sphingoglycolipid (SGL). The predominant cellular fatty acid is an unsaturated octadecenoic acid of C 18:1 . DNA G + C content (mol%) : 64–69 ( genome ). Type species : Pelagerythrobacter marinus Xu et al. 2020 VP (basonym: Altererythrobacter marinus Lai et al. 2009b VP ).

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The Saltpan Microbiome Is Structured by Sediment Depth and Minimally Influenced by Variable Hydration

Cited by 9 publications

References 98 publications

The gut bacterial microbiome of the Threeridge mussel, Amblema plicata, varies between rivers but shows a consistent core community

The gut bacterial microbiome of the Threeridge mussel, Amblema plicata, varies between rivers but shows a consistent core community

Taxonomic Characterization, Antiviral Activity and Induction of Three New Kenalactams in Nocardiopsis sp. CG3

Pelagerythrobacter

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