Department of Algology and Microbial Ecology, Nature Research Centre, Akademijos Str. 2, LT-08412 Vilnius, Lithuania.
Division of Marine Biotechnology, Institute of Oceanography, University of Gdańsk, al. Marszałka Piłsudskiego 46, PL-81-378 Gdynia, Poland.
Toxins (Basel). 2021 Jan 1;13(1):23. doi: 10.3390/toxins13010023.
Global warming and eutrophication contribute to formation of HABs and distribution of alien cyanobacteria northward. The current study assessed how alien to Europe and will co-occur with dominant native and species under changing conditions in temperate freshwaters. The experiments were carried out to examine the effect of nutrients and temperature on the growth rate of cyanobacteria, production of cyanotoxins, and interspecies competition. The highest growth rate was determined for (0.43 day) and (0.40 day) strains at all the tested nutrient concentrations (IP and IN were significant factors). adapted to the wide range of nutrient concentrations and temperature due to high species ecological plasticity; however, was able to suppress its dominance under changing conditions. Regularity between tested variables and STX concentration in was not found, but IP concentration negatively correlated with the amount of dmMC-RR and other non-ribosomal peptides (NRPs) in strains. The relative concentration of NRPs in nontoxic strain was up to 3-fold higher than in MC-producing strain. Our study indicated that nutrients, temperature, and species had significant effects on interspecies competition. had a negative effect on biomass of both alien species and .
全球变暖与富营养化促使赤潮生物与外来蓝藻向北分布。本研究评估了在温带淡水环境条件改变的情况下，外来种 与优势土著种 及 如何共同出现。该实验旨在探究营养物和温度对蓝藻生长速率、产毒能力和种间竞争的影响。在所有测试的营养物浓度（IP 和 IN 是显著因子）下， （0.43 天）和 （0.40 天）菌株的生长速率最高。 由于具有高种生态可塑性，可适应广泛的营养物浓度和温度；但在环境条件改变时， 可抑制其优势地位。在 中未发现测试变量与 STX 浓度之间存在规律性，但 IP 浓度与 dmMC-RR 和其他非核糖体肽（NRPs）的含量呈负相关。无毒 菌株中 NRPs 的相对浓度比产 MC 菌株高 3 倍。本研究表明，营养物、温度和种属对种间竞争有显著影响。 对两种外来种和土著种 的生物量均有负面影响。
