The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients
Algicidal bacteria combined with the ability of aerobic denitrification is considered to be a promising way to control harmful cyanobacterial bloom and remove nitrogen. However, the effect of these bacteria on the vertical distribution of colonial cyanobacteria and nutrients remained unknown. In thi...
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MDPI AG
2022-07-01
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| Online Access: | https://www.mdpi.com/2073-4441/14/13/2129 |
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| author | Qing Zhou Yan Wang Xuezheng Wen Haiqin Liu Yingying Zhang Zhiyong Zhang |
| author_facet | Qing Zhou Yan Wang Xuezheng Wen Haiqin Liu Yingying Zhang Zhiyong Zhang |
| author_sort | Qing Zhou |
| collection | DOAJ |
| description | Algicidal bacteria combined with the ability of aerobic denitrification is considered to be a promising way to control harmful cyanobacterial bloom and remove nitrogen. However, the effect of these bacteria on the vertical distribution of colonial cyanobacteria and nutrients remained unknown. In this study, two algicidal and denitrifying bacteria were respectively co-cultured with the colonial <i>Microcystis aeruginosa</i> to construct the microcosm systems, and then the cyanobacteria number, the ratio of bacterial to cyanobacterial abundance, the content of dissolved nitrogen, phosphorus and organic carbon in different water layers were investigated. The results showed that the distribution difference of <i>Microcystis</i> among the vertical water layers was further enlarged due to the short-term influence of algicidal bacteria <i>Brevundimonas diminuta</i> and <i>Pseudomonas stutzeri</i>. The number of <i>Microcystis</i> in the lower layer was further reduced by the inhibitory effect of the algicidal bacteria. However, there was a dramatic increase in the number of <i>Microcystis</i> in the upper layer, even when the ratio of algicidal bacteria to cyanobacteria increased significantly. <i>B. diminuta</i> and <i>P. stutzeri</i> both greatly promoted the removal of dissolved total nitrogen in the upper and middle layers of cyanobacteria blooming water, but they also boosted the release of dissolved phosphorus in all layers. These results enable us to better understand the possible limitations of algicidal bacteria in their application to control cyanobacteria blooms. |
| first_indexed | 2024-03-09T10:23:57Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T10:23:57Z |
| publishDate | 2022-07-01 |
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| series | Water |
| spelling | doaj.art-39ac1077b6b14ecf92a43acd88a19bd12023-12-01T21:46:36ZengMDPI AGWater2073-44412022-07-011413212910.3390/w14132129The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and NutrientsQing Zhou0Yan Wang1Xuezheng Wen2Haiqin Liu3Yingying Zhang4Zhiyong Zhang5Institute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaInstitute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaInstitute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaInstitute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaInstitute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaInstitute of Agricultural Resources and Environment, Liuhe Observation and Experimental Station of National Agricultural Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaAlgicidal bacteria combined with the ability of aerobic denitrification is considered to be a promising way to control harmful cyanobacterial bloom and remove nitrogen. However, the effect of these bacteria on the vertical distribution of colonial cyanobacteria and nutrients remained unknown. In this study, two algicidal and denitrifying bacteria were respectively co-cultured with the colonial <i>Microcystis aeruginosa</i> to construct the microcosm systems, and then the cyanobacteria number, the ratio of bacterial to cyanobacterial abundance, the content of dissolved nitrogen, phosphorus and organic carbon in different water layers were investigated. The results showed that the distribution difference of <i>Microcystis</i> among the vertical water layers was further enlarged due to the short-term influence of algicidal bacteria <i>Brevundimonas diminuta</i> and <i>Pseudomonas stutzeri</i>. The number of <i>Microcystis</i> in the lower layer was further reduced by the inhibitory effect of the algicidal bacteria. However, there was a dramatic increase in the number of <i>Microcystis</i> in the upper layer, even when the ratio of algicidal bacteria to cyanobacteria increased significantly. <i>B. diminuta</i> and <i>P. stutzeri</i> both greatly promoted the removal of dissolved total nitrogen in the upper and middle layers of cyanobacteria blooming water, but they also boosted the release of dissolved phosphorus in all layers. These results enable us to better understand the possible limitations of algicidal bacteria in their application to control cyanobacteria blooms.https://www.mdpi.com/2073-4441/14/13/2129aerobic denitrificationalgicidal bacteriacyanobacteriacolonial <i>Microcystis</i>vertical distribution |
| spellingShingle | Qing Zhou Yan Wang Xuezheng Wen Haiqin Liu Yingying Zhang Zhiyong Zhang The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients Water aerobic denitrification algicidal bacteria cyanobacteria colonial <i>Microcystis</i> vertical distribution |
| title | The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients |
| title_full | The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients |
| title_fullStr | The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients |
| title_full_unstemmed | The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients |
| title_short | The Effect of Algicidal and Denitrifying Bacteria on the Vertical Distribution of Cyanobacteria and Nutrients |
| title_sort | effect of algicidal and denitrifying bacteria on the vertical distribution of cyanobacteria and nutrients |
| topic | aerobic denitrification algicidal bacteria cyanobacteria colonial <i>Microcystis</i> vertical distribution |
| url | https://www.mdpi.com/2073-4441/14/13/2129 |
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