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| 氮磷形态对铜绿微囊藻的生长影响 |
| Influences of nitrogen and phosphorus species on the growth of Microcystis aeruginosa |
| 投稿时间：2017-01-09 |
| DOI：10.13259/j.cnki.eri.2020.01.001 |
| 中文关键词: 比增长速率 倍增时间 细胞密度 叶绿素a |
| 英文关键词:specific growth rate doubling time cell density chlorophyll a |
| 基金项目:上海市科委基础研究重大项目（13DJ1400105）；国家自然科学基金资助项目（51279108） |
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| 中文摘要: |
| 采用BG11培养基探究了铜绿微囊藻生长所需的氮源、磷源最佳质量浓度，并通过测定铜绿微囊藻细胞密度和叶绿素a质量浓度，研究了氮磷的三种不同形态（NH4+-N、NO3--N和NO2--N和K2HPO4、β-G-P、ATP）对铜绿微囊藻的生长影响。结果表明，铜绿微囊藻生长所需最佳氮源质量浓度为32 mg·L?1，三种氮源对铜绿微囊藻生长的影响从大到小依次为NO3-N、NO2-N、NH4+-N；铜绿微囊藻生长所需最佳磷源质量浓度为0.5 mg·L?1，三种磷源对铜绿微囊藻生长影响从大到小依次为ATP、K2HPO4、β-G-P。因此，氮磷质量浓度及其形态的不同对于铜绿微囊藻的生长均会有影响，可以通过调节氮磷质量浓度及其形态有效调控蓝藻暴发。 |
| 英文摘要: |
| The most suitable concentrations of nitrogen and phosphorus sources for the growth of Microcystis aeruginosa were explored using BG11 medium. And then by measuring cell density and chlorophyll a content, the effects of three different species of both nitrogen and phosphorus (NH4+-N, NO3--N, NO2-N, K2HPO4, β-G-P, and ATP) on the growth of Microcystis aeruginosa were investigated. The results showed that the optimal nitrogen concentration for the growth of Microcystis aeruginosa was 32 mg·L-1. The effects of three kinds of nitrogen species on the growth of Microcystis aeruginosa in the order of increase were NH4+-N, NO2--N, and NO3--N. The optimal phosphorus concentration was 0.5 mg·L-1. The effects of phosphorus species on the growth of Microcystis aeruginosa were in the order of ATP > K2HPO4 > β-G-P. Thus, nitrogen and phosphorus contents as well as their species have an impact on the growth of Microcystis aeruginosa, and the control of blue-green algae blooming can be effectively realized by adjusting the concentration of nitrogen and phosphorus and their species. |
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