The environmental health-related relevance of cyanobacteria is primarily related to their ability to produce a wide range of toxins, which are known to be hazardous to many organisms, including human beings. The occurrence of cyanobacterial blooms has been related to eutrophic surface water. In the bloom-forming process the levels of phosphorus and nitrogen have been well documented but information regarding concentrations of other chemicals (inorganic, organo-metallic, and organic) is still incipient. Several contaminants, like trace metals, elicit a variety of acute and chronic toxicity effects, but cyanobacteria also have the capability to accumulate, detoxify, or metabolize such substances, to some extent. The role of cyanobacterial exudates has been proved a means of both nutrient acquisition and detoxification. In addition, cyanobacteria are effective biological metal sorbents, representing an important sink for metals in aquatic environment. Understanding the fundamental physicochemical mechanisms of trace metal bio-uptake by cyanobacteria in natural systems is a step towards identifying under what conditions cyanobacterial growth is favored and to ascertain the mechanisms by which blooms (and toxin production) are triggered. In this review the cyanobacterial interactions with metals will be discussed, focusing on freshwater systems.

中文翻译：

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蓝细菌金属相互作用：要求，毒性和生态意义。

蓝细菌与环境健康有关的相关性主要与它们产生多种毒素的能力有关，这些毒素已知对包括人类在内的许多生物有害。蓝藻水华的发生与富营养化的地表水有关。在水华形成过程中，磷和氮的含量已得到充分记录，但有关其他化学物质（无机，有机金属和有机）浓度的信息仍在初期。几种污染物（如痕量金属）会引起多种急性和慢性毒性作用，但蓝细菌也具有在某种程度上积聚，解毒或代谢这类物质的能力。蓝细菌渗出液的作用已被证明是养分获取和排毒的一种手段。此外，蓝细菌是有效的生物金属吸附剂，代表了水生环境中金属的重要吸收剂。了解自然系统中蓝细菌对痕量金属的生物吸收的基本理化机制，是朝着确定在何种条件下促进蓝细菌生长并确定引发水华（和毒素产生）的机制迈出的一步。在这篇综述中，将讨论蓝细菌与金属的相互作用，重点是淡水系统。了解自然系统中蓝细菌对痕量金属的生物吸收的基本理化机制，是朝着确定在何种条件下促进蓝细菌生长并确定引发水华（和毒素产生）的机制迈出的一步。在这篇综述中，将讨论蓝细菌与金属的相互作用，重点是淡水系统。了解自然系统中蓝细菌对痕量金属的生物吸收的基本理化机制，是朝着确定在何种条件下促进蓝细菌生长并确定引发水华（和毒素产生）的机制迈出的一步。在这篇综述中，将讨论蓝细菌与金属的相互作用，重点是淡水系统。