On the Bioremediation Potential of Inhabitant Microbes of Dredged Marine Soils: A Theoretical Framework

Anuar, Nurasiah Mira; Kassim, Amir Hashim Mohd; Chan, Chee Ming

doi:10.4028/www.scientific.net/kem.594-595.173

Cited by 1 publication

(1 citation statement)

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“…The sample analysis at different exposure time intervals was considered as a key factor in microbial adaptation to the different organic contaminants. It was well known that bacterial species belonging to the genera Pseudomonas and Vibrio have efficient capabilities for degrading various organic compounds, including crude oil and estrogens ( Kanaly and Harayama, 2000 ; Yu et al, 2005 ; Anuar et al, 2013 ; Lamendella et al, 2014 ; Burgos-Aceves et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Acclimation of Culturable Bacterial Communities under the Stresses of Different Organic Compounds

et al. 2018

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The phylogenetic diversity of bacterial communities in response to environmental disturbances such as organic pollution has been well studied, but little is known about the way in which organic contaminants influence the acclimation of functional bacteria. In the present study, tolerance assays for bacterial communities from the sediment in the Pearl River Estuary were conducted with the isolation of functional bacteria using pyrene and different estrogens as environmental stressors. Molecular ecological networks and phylogenetic trees were constructed using both 16S rRNA gene sequences of cultured bacterial strains and 16S rRNA gene-based pyrosequencing data to illustrate the successions of bacterial communities and their acclimations to the different organic compounds. A total of 111 bacterial strains exhibiting degradation and endurance capabilities in response to the pyrene estrogen-induced stress were successfully isolated and were mainly affiliated with three orders, Pseudomonadales, Vibrionales, and Rhodobacterales. Molecular ecological networks and phylogenetic trees showed various adaptive abilities of bacteria to the different organic compounds. For instance, some bacterial OTUs could be found only in particular organic compound-treated groups while some other OTUs could tolerate stresses from different organic compounds. Furthermore, the results indicated that some new phylotypes were emerged under stresses of different organic pollutions and these new phylotypes could adapt to the contaminated environments and contribute significantly to the microbial community shifts. Overall, this study demonstrated a crucial role of the community succession and the acclimation of functional bacteria in the adaptive responses to various environmental disturbances.

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