生態学的化学量論による植物プランクトンと細菌群集との相互作用の検討

基于生态化学计量研究浮游植物和细菌群落之间的相互作用

• 批准号: 21J15473
• 负责人: JIANG MENGQI
• 金额: $ 0.96万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21J15473/
• 关键词: phytoplankton; nitrogen; phosphorus; growth rate hypothesis; stoichiometry; trophic gradients; bacteria

In the present study, the growth rate hypothesis (GRH) was demonstrated to be inapplicable for Chlorella vulgaris, a type of green algae, under N starvation. In fact, the research showed that under low nutrient levels, the organism had a higher requirement for nitrogen than phosphorus. This suggests that the causality of nitrogen, protein, and biomass under phosphorus starvation may be different from what was previously assumed. Our results indicated that N, rather than P, would be the primary element limiting phytoplankton growth under low-nutrient conditions. If this phenomenon is applicable for all phytoplankton species, it could be valid for controlling phytoplankton biomass in aquatic ecosystems, and could improve biomass management of blooming phytoplankton by emphasizing a specific nutrient.

在本研究中，在N饥饿下，证明生长速率假设（GRH）对于一种绿藻（一种绿藻）而言是不适用的。实际上，研究表明，在养分较低的水平下，该生物对氮的需求高于磷。这表明磷饥饿下的氮，蛋白质和生物量的因果关系可能与以前假设的因果关系不同。我们的结果表明，n而不是p将是低营养条件下浮游植物生长的主要元素。如果这种现象适用于所有浮游植物物种，则可能有效地控制水生生态系统中的浮游植物生物量，并且可以通过强调特定的营养素来改善Blooming Phytoplankton的生物量管理。

项目成果

Trophic status has crucial influence on the relative requirement of nitrogen to phosphorus for phytoplankton growth

营养状况对浮游植物生长对氮磷的相对需求有着至关重要的影响

• 发表时间: 2021
• 作者: Jiang;M.;S. Nakano;Mengqi Jiang & Shin-ichi Nakano
• 通讯作者: Mengqi Jiang & Shin-ichi Nakano

The crucial influence of trophic status on the relative requirement of nitrogen to phosphorus for phytoplankton growth

• DOI: 10.1016/j.watres.2022.118868
• 发表时间: 2022-07-20
• 期刊: WATER RESEARCH
• 影响因子: 12.8
• 作者: Jiang，Mengqi;Nakano，Shin-ichi
• 通讯作者: Nakano，Shin-ichi

New insights into the stoichiometric regulation of carotenoid production in Chlorella vulgaris

• DOI: 10.1016/j.biteb.2022.101227
• 发表时间: 2022-09
• 期刊: Bioresource Technology Reports
• 作者: Mengqi Jinag;S. Nakano

Application of image analysis for algal biomass quantification: a low-cost and non-destructive method based on HSI color space

图像分析在藻类生物量定量中的应用：基于HSI颜色空间的低成本无损方法

• DOI: 10.1007/s10811-021-02571-4
• 发表时间: 2021
• 期刊: Journal of Applied Phycology
• 影响因子: 3.3
• 作者: Jiang;M.;S. Nakano
• 通讯作者: S. Nakano