Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.
Department of Biology, Aarhus University, Aarhus, Denmark.
Commun Biol. 2023 Aug 3;6(1):809. doi: 10.1038/s42003-023-05183-5.
Little is known on the spreading capacities of Limnomonas gaiensis across freshwater lakes in Northern Europe. In this study, we show that the species could successfully be aerosolized from water sources by bubble bursting (2-40 particles.cm), irrespectively of its density in the water source or of the jet velocity used to simulate wave breaking. The species viability was impacted by both water turbulences and aerosolization. The survival rate of emitted cells was low, strain-specific, and differently impacted by bubble busting processes. The entity "microalga and bionts" could produce ethanol, and actively nucleate ice (principally ≤-18 °C) mediated soluble ice nucleation active proteins, thereby potentially impacting smog and cloud formation. Moreover, smallest strains could better cope with applied stressors. Survival to short-term exposure to temperatures down to -21 °C and freezing events further suggest that L. gaiensis could be air dispersed and contribute to their deposition.
关于 Limnomonas gaiensis 在北欧淡水湖泊中的扩散能力知之甚少。在这项研究中，我们表明，该物种可以通过气泡破裂（2-40 个颗粒/cm）从水源气溶胶化，而与水源中的密度或用于模拟波浪破碎的射流速度无关。物种的生存能力受到水的湍流和气溶胶化的影响。发射细胞的存活率低，具有菌株特异性，并且受到气泡破裂过程的不同影响。实体“微藻和生物”可以产生乙醇，并积极成核冰（主要为 ≤-18°C）介导可溶性冰核活性蛋白，从而可能影响烟雾和云的形成。此外，最小的菌株可以更好地应对施加的胁迫。对低达-21°C 的短期温度暴露和冻结事件的生存能力进一步表明，L. gaiensis 可以通过空气分散并有助于其沉积。
