The succession of microbial community in the organic rich fish-farm sediment during bioremediation by introducing artificially mass-cultured colonies of a small polychaete, Capitella sp. I

Kunihiro, Tadao; Miyazaki, Tomoaki; Uramoto, Yuuta; Kinoshita, Kyoko; Inoue, Akihiro; Tamaki, Sayaka; Hama, Daigo; Tsutsumi, Hiroaki; Ohwada, Kenji

doi:10.1016/j.marpolbul.2007.10.009

Cited by 29 publications

(17 citation statements)

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“…2). This observation was consistent with previous reports that substantial shifts in the bacterial community in response to mariculture [24,56] and other anthropogenic pollutions [11,57,58]. The high degree of similarity in the bacterial community compositions between D2-F and Q4-F indicated environmental stresses resulted from mariculture could drive the bacterial community composition of sediment close to each other.…”

Section: T-rflp Analysis Of Microbial Communitysupporting

confidence: 91%

“…Mariculture has been reported to influence the spatial and temporal distribution of bacterial communities in fish farm sediment [24,32,64]. Results of this study further confirmed this observation (Figs.…”

Section: Microbial Community Distribution In Response To Environmentasupporting

confidence: 88%

“…For example, the diversity of several functional bacterial groups, such as β-proteobacterial ammonia-oxidizing bacteria and archaea, has been reported to be related to nutrient (N and C) cycling in sediments of mariculture zone [21][22][23]. The accumulation of organic compounds has been reported to increase the presence of α-Proteobacteria in the sediment of fish farm, suggesting their importance in organic matter decomposition [24]. The microbial communities in the sediment inside and outside of the mariculture zone were investigated in terms of their dynamic and sensitivity to environmental variation, especially eutrophication [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

et al. 2013

Microb Ecol

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Mariculture is one of the major seafood supplies worldwide and has caused serious environmental concerns on the coastal zone. Its rapid development has been shown to disrupt the sediment ecosystems and thus influence the benthic bacterial communities. Bacterial diversity and community structure within both adjacent farms and non-cultured zones intertidal sediments along the coasts of Qinhuangdao and Dalian, China, were investigated using full-length 16S rRNA gene-based T-RFLP analyses and clone library construction. Richness and Shannon-Wiener index were significantly increased at sites adjacent the mariculture farm with mean values of 29 and 2.97 from peak profiles of T-RFLP result. Clustering analyses suggested that impacts of mariculture on bacterial diversity of sediment were significantly larger than those resulted from temporal and spatial scales. Upon comparisons of RFLP patterns from 602 clones from libraries of the selected five samples, 137 OTUs were retrieved. Members of γ-and δ-Proteobacteria, Bacilli, Flavobacteria, and Actinobacteria were recorded in all libraries. In addition, γ-Proteobacteria were dominant in all samples (21.7~45.0 %). Redundancy analysis revealed that the distribution of bacterial composition seemed to be determined by the variables of salinity, PO 4 3− -P, NH 4 + -N, and Chlorophyll a content. The phyla of γ-Proteobacteria, Clostridia, Flavobacteria, Bacilli, and Planctomycetes were principal components to contribute to the bacterial differences of clone libraries. Our finding demonstrated that these phyla could display variations of bacterial composition linked to environmental disturbance resulted from mariculture.

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Section: T-rflp Analysis Of Microbial Communitysupporting

confidence: 91%

Section: Microbial Community Distribution In Response To Environmentasupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

et al. 2013

Microb Ecol

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“…Kunihiro et al (2008) found a significant positive correlation between Capitella biomass and the quinone content of the sediment as an indicator of the biomass of microorganisms (Saitou et al, 1999;Hiraishi et al, 2003), and a marked increase of ubiquinone-10 (UQ-10) among the quinones when dense patches of the worms were established in the organically enriched sediment. Since UQ-10 is one of the co-enzymes used for aerobic respiration in the respiratory chain by the members of the class Alphaproteobacteria (Collins and Jones, 1981), it is very likely that the efficient decomposition of organic matter of the organically enriched sediment was not realized in the bioremediation experiments by the single effect of the feeding activity of Capitella, but was caused by the associated activities of Capitella with the microorganisms in the sediment (Chareonpanich et al, 1993;Tsutsumi et al, 2002;Kunihiro et al, 2008;Wada et al, 2008). Various biological activities of Capitella in the sediment, including burrowing into the sediment, spouting the subsurface sediment on the sediment surface, feeding the subsurface sediment and excreting fecal pellets on the sediment (Tsutsumi et al, 2005b), may act to a create more oxidized environment in the organically enriched sediment that is suitable for increase of aerobic bacteria (Wu et al, 2003;Wada et al, 2005).…”

Section: Introductionmentioning

confidence: 95%

“…In the bioremediation experiments, the introduced Capitella colonies increased explosively on the organically enriched sediment during the late autumn and winter, and the amount of sedimentary organic matter decreased significantly following the rapid population growth (Tsutsumi et al, 2005a;Kinoshita et al, 2008). Kunihiro et al (2008) found a significant positive correlation between Capitella biomass and the quinone content of the sediment as an indicator of the biomass of microorganisms (Saitou et al, 1999;Hiraishi et al, 2003), and a marked increase of ubiquinone-10 (UQ-10) among the quinones when dense patches of the worms were established in the organically enriched sediment. Since UQ-10 is one of the co-enzymes used for aerobic respiration in the respiratory chain by the members of the class Alphaproteobacteria (Collins and Jones, 1981), it is very likely that the efficient decomposition of organic matter of the organically enriched sediment was not realized in the bioremediation experiments by the single effect of the feeding activity of Capitella, but was caused by the associated activities of Capitella with the microorganisms in the sediment (Chareonpanich et al, 1993;Tsutsumi et al, 2002;Kunihiro et al, 2008;Wada et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Increase in Alphaproteobacteria in association with a polychaete, Capitella sp. I, in the organically enriched sediment

et al. 2011

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We conducted bioremediation experiments on the organically enriched sediment on the sea floor just below a fish farm, introducing artificially mass-cultured colonies of deposit-feeding polychaete, Capitella sp. I. To clarify the association between the Capitella and bacteria on the efficient decomposition of the organic matter in the sediment in the experiments, we tried to identify the bacteria that increased in the microbial community in the sediment with dense patches of the Capitella. The relationship between TOC and quinone content of the sediment as an indicator of the bacterial abundance was not clear, while a significant positive correlation was found between Capitella biomass and quinone content of the sediment. In particular, ubiquinone-10, which is present in members of the class Alphaproteobacteria, increased in the sediment with dense patches of the Capitella. We performed denaturing gradient gel electrophoresis (DGGE) analyses to identify the alphaproteobacterial species in the sediment with dense patches of the worm, using two DGGE fragments obtained from the sediment samples and one fragment from the worm body. The sequences of these DGGE fragments were closely related to the specific members of the Roseobacter clade. In the associated system with the Capitella and the bacteria in the organically enriched sediment, the decomposition of the organic matter may proceed rapidly. It is very likely that the Capitella works as a promoter of bacteria in the organically enriched sediment, and feeds the increased bacteria as one of the main foods, while the bacteria decompose the organic matter in the sediment with the assistance of the Capitella.

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Bioresources for Control of Environmental Pollution

Sana

2014

Biotechnological Applications of Biodiversity

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Environmental pollution is one of the biggest threats to human beings. For practical reasons it is not possible to stop most of the activities responsible for environmental pollution; rather we need to eliminate the pollutants. In addition to other existing means, biological processes can be utilized to get rid of toxic pollutants. Degradation, removal, or deactivation of pollutants by biological means is known as bioremediation. Nature itself has several weapons to deal with natural wastage and some of them are equally active for eliminating nonnatural pollutants. Several plants, microorganisms, and some lower eukaryotes utilize environmental pollutants as nutrients and some of them are very efficient for decontaminating specific types of pollutants. If exploited properly, these natural resources have enough potential to deal with most elements of environmental pollution. In addition, several artificial microbial consortia and genetically modified organisms with high bioremediation potential were developed by application of advanced scientific tools. On the other hand, natural equilibria of ecosystems are being affected by human intervention. Rapid population growth, urbanization, and industrialization are destroying ecological balances and the natural remediation ability of the Earth is being compromised. Several potential bioremediation tools are also being destroyed by biodiversity destruction of unexplored ecosystems. Pollution management by bioremediation is highly dependent on abundance, exploration, and exploitation of bioresources, and biodiversity is the key to success. Better pollution management needs the combined actions of biodiversity conservation, systematic exploration of natural resources, and their exploitation with sophisticated modern technologies.

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The succession of microbial community in the organic rich fish-farm sediment during bioremediation by introducing artificially mass-cultured colonies of a small polychaete, Capitella sp. I

Cited by 29 publications

References 36 publications

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

Impacts of Mariculture on the Diversity of Bacterial Communities within Intertidal Sediments in the Northeast of China

Increase in Alphaproteobacteria in association with a polychaete, Capitella sp. I, in the organically enriched sediment

Bioresources for Control of Environmental Pollution

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