Phosphorus cycling between the colonial cyanobacterium Microcystis aeruginosa and attached bacteria, Pseudomonas

Yuan, Lina; Zhu, Wancheng; Xiao, Lin; Yang, Liuyan

doi:10.1007/s10452-008-9227-2

Cited by 26 publications

(12 citation statements)

References 28 publications

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“…The climatic factors, such as atmospheric temperature, rainfall/snowfall, and evaporation influence N and P compositions and concentrations in the aquatic environment (Li et al 2008;Qin et al 2004b;Zhao et al 2007). Atmospheric temperature, as one of most important factors, could greatly change the biological activities and further the nutrient levels in lakes (Yuan et al 2009;Zhao et al 2011). For Lake Hulun, the concentrations of TN, NO 3 --N, NH 4 ?…”

Section: Effects Of Climate and Its Changesmentioning

confidence: 99%

Effects of climatic changes and anthropogenic activities on lake eutrophication in different ecoregions

Chuai

Chen

Yang

et al. 2012

Int. J. Environ. Sci. Technol.

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Climatic changes and anthropogenic activities could affect nutrients' status significantly in the different lake ecosystems. Nutrients in Lake Hulun and Lake Taihu, two largest shallow cyanobacteria-blooming lakes in northern and southern China, respectively, were at eutrophicated levels in 2009. The concentrations of total nitrogen and total phosphorus were 3.346 and 2.250 mg/L as well as 0.435 and 0.062 mg/L, respectively, in these two lakes with different causes of eutrophication. For Lake Hulun, it was the decreased amount of water as a result of the warming and drying climate that accounted for the abrupt increase of total nitrogen and total phosphorus levels through inspissation. In addition, the icebound effects, no outflows, low nutrients sequestration by the sediment and the reduction of aquatic productivity made the situation even worse. On the contrary, high population densities, the rapid development of agriculture and industry as well as urbanization have increased the nitrogen and phosphorus loads on Lake Taihu. Therefore, higher criteria of total nitrogen and total phosphorus should be applied in Lake Hulun given the difficulties in controlling climatic changes while much more rigorous standards should be established for Lake Taihu since the anthropogenic impacts on nutrient status are relatively easy to control.

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Section: Effects Of Climate and Its Changesmentioning

confidence: 99%

Effects of climatic changes and anthropogenic activities on lake eutrophication in different ecoregions

Chuai

Chen

Yang

et al. 2012

Int. J. Environ. Sci. Technol.

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“…Compared with other abiotic particles and the water column, these colonies are rich in organic matter produced by cyanobacterial cells and offer a “hotspot” for bacterial colonization (Worm & Sondergaard, ). Interactions such as nutrient transference (Yuan, Zhu, Xiao, & Yang, ), growth promotion or inhibition (Berg et al., ; Shi, Cai, Li, et al., ; Xie et al., ), and toxin production and degradation between bacteria and cyanobacteria are intense in these colonies (Maruyama et al., ). Furthermore, these bacteria are closely associated with cyanobacterial bloom formation and nutrient cycling, which greatly affect the development and decline of cyanobacterial blooms (Rashidan & Bird, ; Wang, Zhang, Shen, Xie, & Yu, ; Wang et al., ).…”

Section: Introductionmentioning

confidence: 99%

Large buoyant particles dominated by cyanobacterial colonies harbor distinct bacterial communities from small suspended particles and free‐living bacteria in the water column

et al. 2018

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Worldwide cyanobacterial blooms greatly impair ecosystems in many eutrophic lakes and impact the microbial environment. In particular, large cyanobacterial colonies that are buoyant on the water surface may provide a distinct habitat for bacteria from other small particles that are suspended stably in the water column. To test this hypothesis, bacterial communities (excluding cyanobacteria) attached to large particles dominated by cyanobacterial colonies (>120 μm, LA), small particles (3-36 μm, SA), and free-living bacteria (0.2-3 μm, FL) were investigated monthly for a year in Lake Taihu, China. Results confirmed that the Shannon diversity index of LA was significantly lower than that of FL, which was lower than that of SA. Cytophagia and Alphaproteobacteria were specially enriched in LA. Although samples in each habitat collected during high- (May to November) and low-bloom seasons (December to April) were separated, all samples in LA were clustered and separated from SA and FL, which were also clustered during the same sampling seasons. In addition, the bacterial communities in LA were correlated with nitrate level, whereas FL and SA were correlated with nitrate level and temperature. Mantel analysis revealed that bacterial composition significantly correlated with the cyanobacterial composition in LA and FL but not in SA. These results indicate that LA provides distinct niches to bacteria, whereas the differentiation of bacterial communities in FL and SA is seasonally dependent.

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“…These storage attributes of Microcystis can form new cells six times more than Oscillatoria (Brookes and Ganf 2001). Colony-forming Microcystis accumulated P better than Oscillatoria and Pseudomonas from P-containing organic sources (Yuan et al 2009). This strategy, the polyphosphate Boverplus^phenomenon, provides Microcystis with a competitive advantage over many microalgae (Sommer 1985).…”

Section: Discussionmentioning

confidence: 93%

Dynamics and polyphasic characterization of odor-producing cyanobacterium Tychonema bourrellyi from Lake Erhai, China

Zhang

Song

Shao

et al. 2015

Environ Sci Pollut Res

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The previous studies indicated that Tychonema-like strains from Lake Erhai could release geosmin so that the species was listed as the potential harmful cyanobacteria influencing the drinking water safety around Lake Erhai. But, the dynamics and biological information of this species were too limited. In this study, the polyphasic approach was used to reveal its biological characterization and the dynamics in Lake Erhai. The characters of trichomes, including filaments with solitary or bundle state, reddish-brown or bluegreen color, planktonic habitat, and presence of keritomized content, were examined by the microscopic method. The 16S rDNA sequences of these strains were used for phylogenetic analysis and molecular identification. The strains were morphologically classified as Tychonema bourrellyi, and geosmin and β-ionone were identified as the major volatile substances using gas chromatography-mass spectrometry (GC-MS) analysis. No strains of T. bourrellyi were found to produce microcystin by the HPLC and mcy gene approaches. Cell numbers at 12 sampling sites in Lake Erhai were shown as an average of 3×10 4 cells L −1 in 2009 and 2010. The obvious peaks occurred in July and August each year. This was the first report on occurrence of T. bourrellyi from outside of Europe, and T. bourrellyi was also a newly recorded species in China. Such a result demonstrated that T. bourrellyi could distribute extending from cold waters in North Europe to the warm waters in subtropical regions. It was interesting to observe the coincidence of the occurrence of T. bourrellyi with slightly eutrophicated waters since Lake Erhai had been regarded as an early phase of eutrophicated lake.

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Phosphorus cycling between the colonial cyanobacterium Microcystis aeruginosa and attached bacteria, Pseudomonas

Cited by 26 publications

References 28 publications

Effects of climatic changes and anthropogenic activities on lake eutrophication in different ecoregions

Effects of climatic changes and anthropogenic activities on lake eutrophication in different ecoregions

Large buoyant particles dominated by cyanobacterial colonies harbor distinct bacterial communities from small suspended particles and free‐living bacteria in the water column

Dynamics and polyphasic characterization of odor-producing cyanobacterium Tychonema bourrellyi from Lake Erhai, China

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