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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51931

Title: MTBE biodegradation and degrader microbial community dynamics in MTBE, BTEX, and heavy metal-contaminated water
Authors: Chi-Wen Lin
Hung-Chun Lin
Chi-Yung Lai
Contributors: 國立臺灣海洋大學:地球科學研究所
Keywords: 16S rDNA
Metal ions
Microbial community structure
Molecular profiling
Methyl tert-butyl ether
Date: 2007-03
Issue Date: 2019-01-07T08:42:07Z
Publisher: International Biodeterioration and Biodegradation
Abstract: Abstract: The aim of this investigation was to explore microbial community changes under various environmental groundwater conditions (single substrate, mixed substrates, and the presence of heavy metals) and link the changes with simultaneously diminishing substrate concentration in the microcosms. Most microorganisms from environmental microcosms or wastewater treatment plants cannot be cultivated artificially. Capturing microbial community fingerprints, therefore, requires applying a molecular biological technique. By using SSCP profiles of PCR-amplified 16S rDNA genes, it was demonstrated that with the repeated addition of substrates during long-term acclimation, substrate-utilizing populations in a microcosm gradually increased to become the dominant constituent. Conversely, the presence of metals inhibited community development and differentiation. It was also shown that substrate degradation rates increased under co-substrate conditions, with substrate-degraders easily adapting to the environment and becoming the dominant bacteria, a phenomenon attributed to the propensity of the fittest species to outgrow their competitors when presented with suitable substrates.
Relation: 59(2) pp.97-102
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51931
Appears in Collections:[應用地球科學研究所] 期刊論文

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