Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Liao, Jingqiu; Wang, Jie; Jiang, Dianlu; Wang, Michael Cai; Huang, Yi

doi:10.1007/s00253-015-6880-y

Cited by 40 publications

(15 citation statements)

References 65 publications

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“…Bacteria are typically diverse and complex organisms crucial to ecosystem function for their vital roles in global biogeochemical cycles (Xia et al ; Newton et al ; Liao et al 2015 a ; Cao et al ). The revolution of high‐throughput sequencing and increasing sampling efforts have confirmed the existence of “rare bacterial biosphere,” which is composed of massive species with a few individuals (Liu et al ).…”

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confidence: 99%

Similar community assembly mechanisms underlie similar biogeography of rare and abundant bacteria in lakes on Yungui Plateau, China

Liao

Cao

Wang

et al. 2017

Limnology & Oceanography

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The revolution of molecular techniques in the field of microbial ecology not only allows an in-depth exploration of abundant bacteria, but also confirms the existence of "rare biosphere." However, the mechanisms underlying the assembly process of abundant and rare bacteria in plateau lakes are still poorly understood. In the present study, distribution of abundant and rare bacteria in 21 lakes on Yungui Plateau, China and the relative importance of deterministic and neutral factors to their biogeographic patterns were examined. Results surprisingly showed that similar biogeographic patterns of rare and abundant taxa were generally shaped via similar assembly mechanisms. For both bacterial groups, deterministic process strongly influenced the distribution, while neutral process was not at play. In addition, they both exhibited a weak distance-decay relationship. Nevertheless, environmental drivers of rare and abundant taxa and their importance were not exactly the same. Water physicochemical property was the most dominant driver shaping the biogeographic pattern of rare taxa, followed by lake morphology and watershed land-use, while for abundant taxa, watershed land-use was the most dominant driver and lake morphology did not play a significant role. This study suggested that rare bacteria in high-altitude aquatic ecosystems might experience equally low extinction risk and respond to environmental changes in a similar manner to abundant ones, but their ecological niches and functions were not identical. To fully understand the assembly mechanism of bacterial community, it is necessary to differentiate the community by traits of taxa.Bacteria are typically diverse and complex organisms crucial to ecosystem function for their vital roles in global biogeochemical cycles (Xia et al. 2010;Newton et al. 2011;Liao et al. 2015a;Cao et al. 2016). The revolution of highthroughput sequencing and increasing sampling efforts have confirmed the existence of "rare bacterial biosphere," which is composed of massive species with a few individuals . These rare bacteria exhibit characteristic metabolic activities (Jones and Lennon 2010;Campbell et al. 2011), carry out particular metabolic functions important for the turnover of certain elements (Pester et al. 2010; Pedr osAli o 2012), and can be regarded as a propagule bank (Grime 1998). Compared to rare bacteria, abundant ones have been explored to a deeper degree. They appear to contribute a major function to ecosystems (Kim et al. 2013). Considering the importance of rare and abundant taxa, it is necessary to unveil their biogeographic patterns, which will provide more useful information for functional and ecological investigations (Herlemann et al. 2011;Hanson et al. 2012;Liu et al. 2015). However, it is still under debate whether rare bacterial taxa share similar biogeography with abundant ones. In order to resolve this dispute and also to interpret a global map of bacterial diversity, more efforts are in demand to characterize the biogeographic patterns of rare and ab...

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confidence: 99%

Similar community assembly mechanisms underlie similar biogeography of rare and abundant bacteria in lakes on Yungui Plateau, China

Liao

Cao

Wang

et al. 2017

Limnology & Oceanography

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“…The soil from the Northeast China site was high in organic matter and black in colour (Liao et al . ), whereas the red earth collected from Xiamen was an acidic, orthic ferralsol with unsaturated basicity (Deng et al . ).…”

Section: Methodsmentioning

confidence: 99%

“…The Bohai Bay Rim sediment was collected from an offshore location where on-going exploration and transportation of crude oil occurs ). The soil from the Northeast China site was high in organic matter and black in colour (Liao et al 2015), whereas the red earth collected from Xiamen was an acidic, orthic ferralsol with unsaturated basicity (Deng et al 2014).…”

Section: Sampling and Microcosm Simulationmentioning

confidence: 99%

Response of microbial community and catabolic genes to simulated petroleum hydrocarbon spills in soils/sediments from different geographic locations

et al. 2017

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“…As periphyton biofilms also harbor a high diversity of eukaryotic organisms, it might be an excellent habitat for such lifestyles. In addition to the TCSsensitivity demonstrated in this study, Paracubacteria are also sensitive to oil contamination in soil (Liao et al 2015). Conceivably, the streamlined genomes and the reduced metabolic capabilities of these organisms makes them unable to handle the metabolic challenges that toxic exposure might present.…”

Section: Members Of the Candidate Division Od1 Are Sensitive To Triclmentioning

confidence: 74%

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Supplemental Information 1: Supplementary Figures and Supplementary Table 1 and 2

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The antibacterial agent Triclosan (TCS) is an ubiquitous environmental contaminant due to its widespread use. Sensitivity to TCS varies substantially among eu-and pro-karyotic species and its risk for the marine environment remains to be better elucidated. In particular, the effects that TCS causes on marine microbial communities are largely unknown. In this study we therefore used 16S amplicon rDNA sequencing to investigate TCS effects on the bacterial composition in marine periphyton communities that developed under long-term exposure to different TCS concentrations. Exposure to TCS resulted in clear changes in bacterial composition already at concentrations of 1 to 3.16 nM. We conclude that TCS affects the structure of the bacterial part of periphyton communities at concentrations that actually occur in the marine environment. Sensitive taxa, whose abundance decreased significantly with increasing TCS concentrations, include the Rhodobiaceae and Rhodobacteraceae families of Alphaproteobacteria, and unidentified members of the Candidate division OD1. Tolerant taxa, whose abundance increased significantly with higher TCS concentrations, include the families Erythrobacteraceae (Alphaproteobacteria), Flavobacteriaceae (Bacteroidetes), Bdellovibrionaceae (Deltaproteobacteria), several families of Gammaproteobacteria, and members of the Candidate phylum BD1-5. Our results demonstrate the variability of TCS sensitivity among bacteria, and the importance of extending the ecotoxicological assessment of antimicrobial chemicals, such as TCS, to non-cultivable bacteria and natural communities.

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Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Cited by 40 publications

References 65 publications

Similar community assembly mechanisms underlie similar biogeography of rare and abundant bacteria in lakes on Yungui Plateau, China

Similar community assembly mechanisms underlie similar biogeography of rare and abundant bacteria in lakes on Yungui Plateau, China

Response of microbial community and catabolic genes to simulated petroleum hydrocarbon spills in soils/sediments from different geographic locations

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