Düsedau Luisa, Ren Yifei, Hou Minglei, Wahl Martin, Hu Zi-Min, Wang Gaoge, Weinberger Florian
Marine Ecology Division, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, D-24105 Kiel, Germany.
Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany.
Microorganisms. 2023 Feb 27;11(3):599. doi: 10.3390/microorganisms11030599.
Epibacterial communities on seaweeds are affected by several abiotic factors such as temperature and acidification. Due to global warming, surface seawater temperatures are expected to increase by 0.5-5 °C in the next century. However, how epibacterial communities associated with seaweeds will respond to global warming remains unknown. In this study, we investigated the response of epibacterial communities associated with the invasive exposed to 3 °C above ambient temperature for 4 months using a benthocosm system in Kiel, Germany, and 16S rRNA gene amplicon sequencing. The results showed that elevated temperature affected the beta-diversity of the epibacterial communities. Some potential seaweed pathogens such as , , , and were identified as indicator genera at the elevated temperature level. Thirteen core raw amplicon sequence variants in the elevated temperature group were the same as the populations distributed over a wide geographical range, indicating that these core ASVs may play an important role in the invasive . Overall, this study not only contributes to a better understanding of how epibacterial communities associated with may adapt to ocean warming, but also lays the foundation for further exploration of the interactions between and its epimicrobiota.
海藻上的附生细菌群落受到温度和酸化等多种非生物因素的影响。由于全球变暖，预计下个世纪表层海水温度将升高0.5 - 5摄氏度。然而，与海藻相关的附生细菌群落将如何应对全球变暖仍不清楚。在本研究中，我们在德国基尔使用底栖生物系统，通过16S rRNA基因扩增子测序，研究了与入侵海藻相关的附生细菌群落在高于环境温度3摄氏度的条件下暴露4个月后的反应。结果表明，温度升高影响了附生细菌群落的β多样性。一些潜在的海藻病原体，如[具体菌属名称未给出]、[具体菌属名称未给出]、[具体菌属名称未给出]和[具体菌属名称未给出]，被确定为温度升高水平下的指示菌属。温度升高组中的13个核心原始扩增子序列变体与广泛地理分布的种群相同，表明这些核心ASV可能在入侵海藻中发挥重要作用。总体而言，本研究不仅有助于更好地理解与入侵海藻相关的附生细菌群落如何适应海洋变暖，也为进一步探索入侵海藻与其附生微生物群之间的相互作用奠定了基础。
