Interpreting the possible ecological role(s) of cyanotoxins: compounds for competitive advantage and/or physiological aide?
Interpreting the possible ecological role(s) of cyanotoxins: compounds for competitive advantage and/or physiological aide?
复制标题
DOI：
10.3390/md11072239
复制
发表时间：
2013-06-27
期刊：
影响因子：
5.4
通讯作者：
Kinnear S
中科院分区：
文献类型：
--
作者：
Holland A;Kinnear S
迄今为止，大多数关于淡水蓝藻毒素的研究都侧重于了解毒素产生和分解的动态，以及评估触发毒素产生的环境条件，所有这些研究的目的都是为减少风险的管理战略和备选方案提供信息。相对而言，很少有研究考虑如何利用这一信息来了解蓝藻毒素的更广泛的生态作用，以及这一知识在有毒水华管理中的可能应用。本文探讨了生态学，毒理学和遗传学的证据，在自然环境中产生的蓝藻毒素。毒素生产可能的进化优势分为两个主题：“竞争优势”或“生理助手”。第一组说明了蓝藻产生的化合物可能起源于细胞防御机制的需要，以应对放牧压力和/或资源竞争。第二组考虑的贡献，次生代谢物改善细胞生理学，通过利益的稳态，光合效率，加速生长速度。讨论还包括关于毒素可能的演变作用的辩论中的其他因素，例如不同的接触模式和对非目标（即，非竞争性物种。本文表明，复杂和多种因素在推动水生环境的进化过程中发挥作用。这一信息可能为管理有毒水华提供一个新的视角，包括需要采用“系统方法”来了解物理化学条件以及生物压力如何相互作用以触发毒素产生。
To date, most research on freshwater cyanotoxin(s) has focused on understanding the dynamics of toxin production and decomposition, as well as evaluating the environmental conditions that trigger toxin production, all with the objective of informing management strategies and options for risk reduction. Comparatively few research studies have considered how this information can be used to understand the broader ecological role of cyanotoxin(s), and the possible applications of this knowledge to the management of toxic blooms. This paper explores the ecological, toxicological, and genetic evidence for cyanotoxin production in natural environments. The possible evolutionary advantages of toxin production are grouped into two main themes: That of “competitive advantage” or “physiological aide”. The first grouping illustrates how compounds produced by cyanobacteria may have originated from the need for a cellular defence mechanism, in response to grazing pressure and/or resource competition. The second grouping considers the contribution that secondary metabolites make to improved cellular physiology, through benefits to homeostasis, photosynthetic efficiencies, and accelerated growth rates. The discussion also includes other factors in the debate about possible evolutionary roles for toxins, such as different modes of exposures and effects on non-target (i.e., non-competitive) species. The paper demonstrates that complex and multiple factors are at play in driving evolutionary processes in aquatic environments. This information may provide a fresh perspective on managing toxic blooms, including the need to use a “systems approach” to understand how physico-chemical conditions, as well biological stressors, interact to trigger toxin production.
登录
查看更多内容
DOI：
10.1007/978-3-540-32210-8_18
发表时间：
2006-01-01
期刊：
ECOLOGY OF HARMFUL ALGAE
影响因子：
--
作者：
Graneli, E.;Flynn, K.
通讯作者：
Flynn, K.
影响因子：
4.4
作者：
Jaehnichen, Sabine;Ihle, Tilo;Benndorf, Juergen
通讯作者：
Benndorf, Juergen
影响因子：
6.6
作者：
Buskey, Edward J.
通讯作者：
Buskey, Edward J.
影响因子：
2.8
作者：
Hitzfeld, BC;Lampert, CS;Dietrich, DR
通讯作者：
Dietrich, DR
微囊藻毒素在维持水华形成微囊藻属菌落中的作用。
影响因子：
5.1
作者：
Gan, Nanqin;Xiao, Yan;Song, Lirong
通讯作者：
Song, Lirong