Effects of Phosphate and Arsenate on As Metabolism in Microcystis aeruginosa at Different Growth Phases
文献类型：期刊论文
| 作者 | Zhang, Ping1,2; Liu, Jinxin1,2; Yang, Fen1; Xie, Shaowen3; Wei, Chaoyang1 |
| 刊名 | WATER
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 16期号:7页码:12 |
| 关键词 | arsenic Microcystis aeruginosa phosphorus metabolism growth phase |
| DOI | 10.3390/w16070940 |
| 通讯作者 | Yang, Fen(yangf@igsnrr.ac.cn) |
| 英文摘要 | Arsenic (As) metabolism in freshwater algae at different growth phases has rarely been documented. To address this gap, this study was conducted to assess the intra- and extracellular As metabolism, along with speciation changes, in Microcystis aeruginosa across three growth phases. The treatment involved varying concentrations of As (0, 0.4, 0.6, 0.8 and 1 mg/L, in the form of arsenate, iAs(V)) under three phosphorus levels (0.02 mg/L as low, 0.1 mg/L as medium, and 0.5 mg/L as high P in the form of phosphate). The findings revealed that extracellular iAs(V) remained the dominant As species during the lag and exponential growth phases of M. aeruginosa in the growth media, while intracellular trivalent As (iAs(III)) emerged as the pronounced species during the exponential growth phase, but also exhibited a significant negative correlation with the P levels. Moreover, elevated P levels had promoted the formation of intra- and extracellular dimethylarsinic acid (DMA) and monomethylarsonic acid (MMA) in the exponential growth phase. During the stationary growth phase, intracellular iAs(V) was found to decrease with the increasing P levels. During the whole growth phases, P had consistently reduced algal As absorption levels. The significant promotion of algal As absorption in response to iAs(V) was observed only during the lag growth phase. The As bioaccumulation exhibited a correlational relationship with the algal reproduction. Both low and high P levels (0.02 and 0.5 mg/L) decreased the accumulation of As in algae cells during the exponential and stationary growth phases. The transformation and release rate of As were concomitantly influenced by P, and exhibited the same trends within the growth phase. These trends differed between the exponential and stationary growth phases, with an inhibitory effect being present during the former, while a promotional effect was observed during the latter. This study provides insight into potential As hazards in freshwater lakes with algae bloom. |
| WOS关键词 | DUNALIELLA-SALINA ; GREEN-ALGA ; TOXICITY ; WATER ; PHOSPHORUS ; CHLORELLA ; NITROGEN ; KINETICS ; BIOTRANSFORMATION ; ACCUMULATION |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001201542200001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/204640]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Fen |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Foshan Univ, Sch Environm & Chem Engn, Foshan 528011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ping,Liu, Jinxin,Yang, Fen,et al. Effects of Phosphate and Arsenate on As Metabolism in Microcystis aeruginosa at Different Growth Phases[J]. WATER,2024,16(7):12. |
| APA | Zhang, Ping,Liu, Jinxin,Yang, Fen,Xie, Shaowen,&Wei, Chaoyang.(2024).Effects of Phosphate and Arsenate on As Metabolism in Microcystis aeruginosa at Different Growth Phases.WATER,16(7),12. |
| MLA | Zhang, Ping,et al."Effects of Phosphate and Arsenate on As Metabolism in Microcystis aeruginosa at Different Growth Phases".WATER 16.7(2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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