Microbial activity and bacterial community structure during degradation of microcystins

Christoffersen, Kirsten; Lyck, Susanne; Winding, Anne

doi:10.3354/ame027125

Cited by 172 publications

(106 citation statements)

References 43 publications

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“…This time is matching point with that reported by Christoffersen et al [24], who confirm the degradation of the two microcystin analogues in natural waters were almost removed around 8 days. However, some reports found that there is a lag-phrase ranging from 2 to 20 days in different surface waters and different initial concentrations of MC until the biological degradation commence [25].…”

Section: Biodegradation Of MC By Strain T11supporting

confidence: 79%

Isolation of a Arthrobacter sp. T11 that Degrades Cyanobacterial Hepatotoxin Microcystin from the Sediment of a Shallow Hypertrophic Lake

Qu¹,

Zhang²,

Zhang³

et al. 2015

Advances in Computer Science Research

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Abstract-In present study, we are intrested in establishing a biological removal method by microorganism against the cyanobacterial hepatotoxin microcystion. A native microcystindegrading bacterium was isolated from a shallow hypertrophic lake, and the biodegradation effect was detected by the LC-MS method. The 16S rDNA gene sequence analysis result indicated that the isolated strain T11 was belonged to the genus Arthrobacter sp., with a highest sequence similarity (98%) with Arthrobacter sp. C6 strain. LC-MS result showed that the Arthrobacter sp. T11 was able to effectively degrade, at a highest concentration of MC (MC-LR ~ 15μg·L -1 ; MC-RR ~ 20μg·L -1 ) in batch experiments using sterilized lake water conditions, with complete removal observed within 10 days.

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Section: Biodegradation Of MC By Strain T11supporting

confidence: 79%

Isolation of a Arthrobacter sp. T11 that Degrades Cyanobacterial Hepatotoxin Microcystin from the Sediment of a Shallow Hypertrophic Lake

Qu¹,

Zhang²,

Zhang³

et al. 2015

Advances in Computer Science Research

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show abstract

“…The biodegradation (BD) of MCs in lake water and lake sediments has been reported previously (Holst et al, 2003;Christffersen et al, 2002;Takenaka and Watanabe, 1997;Jin et al, 2001). However, the environmental fate and effect of MCs in cropland remains unknown.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, it had been reported that the BD times of MC-LR varied from 8 to 49 days (Holst et al, 2003;Christffersen et al, 2002;Takenaka and Watanabe, 1997). An exceptional case reported by Ishii et al (2004) suggested a quick degradation of MC-LR in 4 days at 6 mg/L initial concentration.…”

Section: The Persistence Time Of Mc-rr In Croplandmentioning

confidence: 99%

A laboratory study on risk assessment of microcystin-RR in cropland

Liu

Gong

Xiao

et al. 2008

Journal of Environmental Management

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“…A wide variety of secondary metabolites are produced by cyanobacteria, which can either stimulate or inhibit the growth of different free-living heterotrophic bacteria, thereby influencing microbial community structure (Kirkwood et al 2005;Valdor and Aboal 2007). Some bacteria are even capable of degrading cyanotoxins (Christoffersen et al 2002). Park et al (2001) isolated a microcystin-degrading Sphingomonas sp.…”

Section: P Rubescensmentioning

confidence: 99%

Quantitative dominance of seasonally persistent filamentous cyanobacteria (Planktothrix rubescens) in the microbial assemblages of a temperate lake

Wyngaert

Salcher

Pernthaler

et al. 2010

Limnology & Oceanography

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The spatiotemporal changes in abundance and biomass of heterotrophic bacteria, of three major bacterial phylogenetic groups, and of picocyanobacteria in the upper 20 m of a deep prealpine lake (Lake Zurich, Switzerland) were monitored during a seasonally persistent bloom of the toxigenic filamentous cyanobacterium Planktothrix rubescens. In addition, bacterial 16S ribosomal deoxyribonucleic acid (rDNA) sequences were collected at one instance from the bloom layer and from waters above and below this zone. P. rubescens comprised up to 70% of particulate organic carbon during summer stratification and autumnal mixis and thus by far exceeded the total biomass both of other phytoplankton and of prokaryotes. A strong negative correlation was found between the estimated basin-wide biomass of P. rubescens and of heterotrophic bacteria, and there was different spatial niche preference of filamentous vs. picocyanobacteria. Only members of the CytophagaFlavobacterium lineage of Bacteroidetes showed an increasing tendency of association with the P. rubescens population, in particular at the onset of autumnal mixing. Although the filamentous cyanobacterium was the dominant primary producer throughout the year, it did not seem to be a carbon source for heterotrophic bacteria at all. We conclude that P. rubescens represents a powerful competitor of autotrophic and heterotrophic prokaryotes, likely due to both its specific physiological (photoheterotrophic) properties and its protection against zooplankton grazing. This competitiveness might be regarded as another reason for its mass occurrence in numerous lakes of the Northern hemisphere.

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Microbial activity and bacterial community structure during degradation of microcystins

Cited by 172 publications

References 43 publications

Isolation of a Arthrobacter sp. T11 that Degrades Cyanobacterial Hepatotoxin Microcystin from the Sediment of a Shallow Hypertrophic Lake

Isolation of a Arthrobacter sp. T11 that Degrades Cyanobacterial Hepatotoxin Microcystin from the Sediment of a Shallow Hypertrophic Lake

A laboratory study on risk assessment of microcystin-RR in cropland

Quantitative dominance of seasonally persistent filamentous cyanobacteria (Planktothrix rubescens) in the microbial assemblages of a temperate lake

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