Engineering microalgae for water phosphorus recovery to close the phosphorus cycle

文献类型： 外文期刊

第一作者： Wang, Long

作者： Wang, Long;Jia, Xianqing;Xu, Lei;Yu, Jiahong;Ren, Suna;Yang, Yujie;Yi, Keke;Wang, Kaibin;Lopez-Arredondo, Damar;Herrera-Estrella, Luis;Herrera-Estrella, Luis;Lambers, Hans

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关键词： phosphorus recovery; phosphorus removal; wastewater treatment; microalgae; genetic engineering; algal fertilizer

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.8； 五年影响因子：13.2 ）

ISSN： 1467-7644

年卷期： 2023 年 21 卷 7 期

页码：

收录情况： SCI

摘要： As a finite and non-renewable resource, phosphorus (P) is essential to all life and crucial for crop growth and food production. The boosted agricultural use and associated loss of P to the aquatic environment are increasing environmental pollution, harming ecosystems, and threatening future global food security. Thus, recovering and reusing P from water bodies is urgently needed to close the P cycle. As a natural, eco-friendly, and sustainable reclamation strategy, microalgae-based biological P recovery is considered a promising solution. However, the low P-accumulation capacity and P-removal efficiency of algal bioreactors restrict its application. Herein, it is demonstrated that manipulating genes involved in cellular P accumulation and signalling could triple the Chlamydomonas P-storage capacity to similar to 7% of dry biomass, which is the highest P concentration in plants to date. Furthermore, the engineered algae could recover P from wastewater almost three times faster than the unengineered one, which could be directly used as a P fertilizer. Thus, engineering genes involved in cellular P accumulation and signalling in microalgae could be a promising strategy to enhance P uptake and accumulation, which have the potential to accelerate the application of algae for P recovery from the water body and closing the P cycle.

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