水资源保护2019，Vol.35Issue(1)：87-94,8.DOI:10.3880/j.issn.1004-6933.2019.01.016
铁在不同磷源条件下对铜绿微囊藻生长与产毒的影响
Effect of iron on growth and toxicity in production of Microcystis aeruginosa under different phosphorus sources
摘要
Abstract
Aiming at the interaction of phosphorus and trace element iron on the growth of algae, the interaction characteristics of phosphorus and iron in the growth and toxicity of algal cells were studied under different phosphorus sources. Microcystis aeruginosa was selected as algae species, and nitrate nitrogen was used as nitrogen source.Dipotassium hydrogen phosphate (K2HPO4), small molecular organic phosphorus sodium glycerophosphate (Na Gly) and macromolecular organophosphorus lecithin (LEC) were used as phosphorus sources respectively. The growth and toxicity of algae under different iron (Fe3+) concentrations were simultaneously investigated. The results showed that K2HPO4 and Na Gly were the phosphorus sources preferentially used by algae cells. Under these two phosphorus sources, the growth and toxicity of algae cells were promoted, and the average particle size of algae cells remained stable with the incubation time.LEC was not conducive to the growth and toxicity of algae cells, and the average size of algae cells fluctuated greatly.During logarithmic growth period, chlorophyll a was positively correlated with intracellular algae toxin (MC-LR), but there was no correlation between total intracellular phosphorus and total alkaline phosphatase activity (APA) in algae solution.The effect of trace element iron on the growth of algae cells was different under different phosphorus sources and the synergistic effect of Na Gly and iron was more conducive to the growth and toxicity of algae cells.关键词
铜绿微囊藻/微量元素铁/有机磷/无机磷/藻毒素Key words
Microcystis aeruginosa/trace element iron/organic phosphorus/inorganic phosphorus/algae toxin分类
资源环境引用本文复制引用
王举,陈荣,陈静,沈莹..铁在不同磷源条件下对铜绿微囊藻生长与产毒的影响[J].水资源保护,2019,35(1):87-94,8.基金项目
水污染控制与治理科技重大专项(2012ZX07313-001-002) （2012ZX07313-001-002）
陕西省青年科技新星项目(2013KJXX-55) （2013KJXX-55）
