Cawthron Institute, Nelson, New Zealand.
College of Sciences, Massey University, Palmerston North, New Zealand.
Curr Opin Biotechnol. 2024 Dec;90:103207. doi: 10.1016/j.copbio.2024.103207. Epub 2024 Sep 19.
Phosphorus (P) must continuously be added to soils as it is lost in the food chain and via leaching. Unfortunately, the mining and import of P to produce fertiliser is unsustainable and costly. Potential solutions to the global issues of P rock depletion and pollution lie in microalgae and cyanobacteria. With an ability to intracellularly store P as polyphosphates, microalgae and cyanobacteria could provide the basis for removing P from water streams, thereby mitigating eutrophication, and even enabling P recovery as P-rich biomass. Metabolic engineering or changes in growing conditions have been demonstrated to improve P removal and recovery by triggering polyphosphates synthesis in the laboratory. This now needs to be replicated at full scale.
磷（P）在食物链中流失并通过淋溶而不断从土壤中损失，因此必须不断补充。不幸的是，开采和进口磷来生产肥料是不可持续的，而且成本高昂。解决磷矿枯竭和污染这两个全球性问题的潜在方法在于微藻和蓝细菌。微藻和蓝细菌能够将磷以多磷酸盐的形式在细胞内储存，因此可以为从水流中去除磷提供基础，从而减轻富营养化，甚至可以通过富含磷的生物量来回收磷。在实验室中已经证明，通过代谢工程或改变生长条件可以刺激多磷酸盐的合成，从而提高磷的去除和回收效率。现在需要在全规模上进行复制。
