2019
DOI: 10.3389/fmicb.2019.02371
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The Bacterial Communities of Little Cigars and Cigarillos Are Dynamic Over Time and Varying Storage Conditions

Abstract: Despite their potential importance with regard to tobacco-related health outcomes, as well as their hypothesized role in the production of tobacco-specific N-nitrosamines, bacterial constituents of tobacco products lack characterization. Specifically, to our knowledge, there has been no comprehensive characterization of the effects of storage conditions on the bacterial communities associated with little cigars and cigarillos. To address this knowledge gap, we characterized the bacterial community composition … Show more

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Cited by 17 publications
(17 citation statements)
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“…Lastly, to test the underlying factors shaping temporal variation in native eDNA community signatures, we investigated how species communities in each transect changed in response to two variables: direction of tide (incoming/outgoing/peak, N = 3) and time point (0–96 hr, N = 12 or 0–120 hr, N = 6). For each transect, we conducted a PERMANOVA test on the Bray-Curtis dissimilarities calculated between each sample to determine the effect of each variable on community composition using the R package vegan (version 2.5–6) [ 40 ]. We chose Bray-Curtis dissimilarities over Jaccard dissimilarities following the methods of Kelly et al [ 36 ] given that eDNA index enables us to infer changes in relative abundance between taxa.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Lastly, to test the underlying factors shaping temporal variation in native eDNA community signatures, we investigated how species communities in each transect changed in response to two variables: direction of tide (incoming/outgoing/peak, N = 3) and time point (0–96 hr, N = 12 or 0–120 hr, N = 6). For each transect, we conducted a PERMANOVA test on the Bray-Curtis dissimilarities calculated between each sample to determine the effect of each variable on community composition using the R package vegan (version 2.5–6) [ 40 ]. We chose Bray-Curtis dissimilarities over Jaccard dissimilarities following the methods of Kelly et al [ 36 ] given that eDNA index enables us to infer changes in relative abundance between taxa.…”
Section: Methodsmentioning
confidence: 99%
“…We chose Bray-Curtis dissimilarities over Jaccard dissimilarities following the methods of Kelly et al [ 36 ] given that eDNA index enables us to infer changes in relative abundance between taxa. We created all graphs and performed all calculations using R (version 3.6.1) [ 37 ] with phyloseq (version 1.28.0) [ 38 ], Ranacapa (version 0.1.0) [ 41 ], treemapify (version 2.5.3) [ 42 ], iNext (version 2.0.20) [ 39 ] and vegan (version 2.5–6) [ 40 ] packages.…”
Section: Methodsmentioning
confidence: 99%
“…were the taxa most likely to be present and were found in 74% of products tested (28/38, Fig 6 ). The dominance of most of these products by Marinilactibacillus contrasts recently characterized little cigar and cigarillo [ 35 , 36 ] and cigarette microbial communities where this species was not prominent in the products [ 37 ].…”
Section: Discussionmentioning
confidence: 99%
“…Additional studies that included chemistry measurements were performed with cigarette and small cigar tobacco, where microbial community changes due to storage conditions were also explored [ 34 36 ]. However, smokeless tobacco product microbiotas are substantially different from cigar and cigarette tobacco [ 33 , 35 , 37 , 38 ].…”
Section: Introductionmentioning
confidence: 99%
“…Following molecular phylogenetic evidence, we considered Caesionidae as part of Lutjanidae [105] and Microdesmidae as part of Gobiidae [106]. Analyses used the R package vegan [107].…”
Section: Plos Biologymentioning
confidence: 99%