The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia
Microcystin (MC), a hepatotoxin that is associated with cyanobacterial blooms in freshwater lakes, threatens the quality of drinking water resources. Biodegradation of MC using biofiltration is emerging as a cost-effective solution for drinking water treatment. This study reports isolation of five M...
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doaj-3db9aebcaaa543c081dd6a2e568716d62020-11-24T21:58:57ZengMDPI AGWater2073-44412018-10-011011152310.3390/w10111523w10111523The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial ConsortiaDerek Manheim0Yuen-Ming Cheung1Sunny Jiang2Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697, USADepartment of Civil and Environmental Engineering, University of California, Irvine, CA 92697, USADepartment of Civil and Environmental Engineering, University of California, Irvine, CA 92697, USAMicrocystin (MC), a hepatotoxin that is associated with cyanobacterial blooms in freshwater lakes, threatens the quality of drinking water resources. Biodegradation of MC using biofiltration is emerging as a cost-effective solution for drinking water treatment. This study reports isolation of five MC-degrading microbial consortia and investigation of their community structure and kinetics in the presence or absence of a readily-bioavailable organic carbon source. The results indicated that the presence of a bioavailable organic carbon source caused: (1) the proliferation of community members previously unobserved in each consortium cultured without ethanol; (2) a shift in abundance of representative taxa; (3) a fluctuation in genera affiliated with MC-biodegradation; and, (4) a unique response in simulated diversity among consortia. These changes to each microbial consortium were paralleled by a significant decline in MC degradation kinetics. Overall, this study highlights the importance of integrating environmental conditions into the design and operation of biofiltration systems for MC biodegradation.https://www.mdpi.com/2073-4441/10/11/1523microcystinbiodegradationmicrobial interactionscommunity structurebiodegradation kinetics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Derek Manheim Yuen-Ming Cheung Sunny Jiang |
spellingShingle |
Derek Manheim Yuen-Ming Cheung Sunny Jiang The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia Water microcystin biodegradation microbial interactions community structure biodegradation kinetics |
author_facet |
Derek Manheim Yuen-Ming Cheung Sunny Jiang |
author_sort |
Derek Manheim |
title |
The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia |
title_short |
The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia |
title_full |
The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia |
title_fullStr |
The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia |
title_full_unstemmed |
The Effect of Organic Carbon Addition on the Community Structure and Kinetics of Microcystin-Degrading Bacterial Consortia |
title_sort |
effect of organic carbon addition on the community structure and kinetics of microcystin-degrading bacterial consortia |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2018-10-01 |
description |
Microcystin (MC), a hepatotoxin that is associated with cyanobacterial blooms in freshwater lakes, threatens the quality of drinking water resources. Biodegradation of MC using biofiltration is emerging as a cost-effective solution for drinking water treatment. This study reports isolation of five MC-degrading microbial consortia and investigation of their community structure and kinetics in the presence or absence of a readily-bioavailable organic carbon source. The results indicated that the presence of a bioavailable organic carbon source caused: (1) the proliferation of community members previously unobserved in each consortium cultured without ethanol; (2) a shift in abundance of representative taxa; (3) a fluctuation in genera affiliated with MC-biodegradation; and, (4) a unique response in simulated diversity among consortia. These changes to each microbial consortium were paralleled by a significant decline in MC degradation kinetics. Overall, this study highlights the importance of integrating environmental conditions into the design and operation of biofiltration systems for MC biodegradation. |
topic |
microcystin biodegradation microbial interactions community structure biodegradation kinetics |
url |
https://www.mdpi.com/2073-4441/10/11/1523 |
work_keys_str_mv |
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