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首页> 外文期刊>Harmful Algae >Interspecific allelopathy in cyanobacteria: Cylindrospermopsin and Cylindrospermopsis raciborskii effect on the growth and metabolism of Microcystis aeruginosa
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Interspecific allelopathy in cyanobacteria: Cylindrospermopsin and Cylindrospermopsis raciborskii effect on the growth and metabolism of Microcystis aeruginosa

机译：蓝细菌中的种间化感作用：绿精子藻和拟绿单胞菌对铜绿微囊藻生长和代谢的影响

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摘要

The biological role of cyanobacteria secondary metabolites is relatively unknown although several possible hypotheses have been discussed. In the following study the effect of cylindrospermopsin (CYN) and metabolites of non-CYN producing Cylindrospermopsis raciborskii strain on growth, alkaline phosphatase (ALP) activity and microcystin-LR (MC-LR) production in Microcystis aeruginosa was evaluated. Higher concentrations of CYN (10 and 50 μg L~(-1)) induced toxicity effects demonstrated by significant growth inhibition and M. aeruginosa cell necrosis. Lower concentrations of CYN (1 and 5 μL~(-1)) slightly decreased growth rates but significantly up-regulated ALP activity. Moreover, under all studied CYN concentrations MC-LR production strongly decreased. Spent C. raciborskii medium mimicked the CYN action by inducing strong inhibition of M. aeruginosa growth and MC-LR production and through up-regulation of ALP activity. On the other hand, spent M. aeruginosa medium did not affect C. raciborskii growth and no alterations in ALP activity were observed. Co-culturing of these two species resulted in an increase of C. raciborskii contribution at the expense of M. aeruginosa. From the results we conclude that CYN can be involved in interspecific competition in cyanobacteria and that non-CYN producing C. raciborskii strains may produce a hitherto unknown bioactive compound(s) which can mimic CYN action.
机译：尽管已经讨论了几种可能的假设，但蓝细菌次级代谢产物的生物学作用还是相对未知的。在以下研究中，评估了铜绿精囊素（CYN）和非CYN产生的金丝绿藻菌株的代谢产物对铜绿微囊藻的生长，碱性磷酸酶（ALP）活性和微囊藻毒素-LR（MC-LR）产生的影响。高浓度的CYN（10和50μgL〜（-1））诱导的毒性作用表现为明显的生长抑制和铜绿分枝杆菌细胞坏死。较低浓度的CYN（1和5μL〜（-1））会稍微降低生长速率，但会显着上调ALP活性。此外，在所有研究的CYN浓度下，MC-LR的产量均大大降低。废旧的拉氏梭菌培养基通过诱导对铜绿假单胞菌的生长和MC-LR产生的强烈抑制作用以及ALP活性的上调来模仿CYN的作用。另一方面，用过的铜绿假单胞菌培养基不影响拉美梭菌的生长，并且未观察到ALP活性的改变。这两种物种的共同培养导致了铜绿假单胞菌的贡献增加，但铜绿假单胞菌的损失却增加了。根据结果​​，我们得出结论，CYN可能参与蓝细菌的种间竞争，而非CYN产生的C. raciborskii菌株可能会产生迄今未知的可模仿CYN作用的生物活性化合物。

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  • 来源
    《Harmful Algae》 |2014年第5期|1-8|共8页
  • 作者

    Piotr Rzymski; Barbara Poniedzialek; Mikolaj Kokocinski; Tomasz Jurczak; Dawid Lipski; Krzysztof Wiktorowicz;

  • 作者单位

    Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland;

    Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Poznan, Poland;

    Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland,Collegium Polonicum, Faculty of Biology, Adam Mickiewicz University, Slubice, Poland;

    Department of Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland;

    Poznan University of Medical Sciences, Poznan, Poland;

    Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Poznan, Poland;

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  • 正文语种 eng
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  • 关键词

    Allelopathy; Cylindrospermopsin; Cylindrospermopsis raciborskii; Microcystis aeruginosa; Microcystin;

    机译：化感作用;圆柱精子蛋白酶;拟南芥铜绿微囊藻;微囊藻毒素;

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