Department of Botany, Faculty of Science, Aswan University, Aswan, 81528, Egypt.
World J Microbiol Biotechnol. 2022 Aug 25;38(11):205. doi: 10.1007/s11274-022-03394-2.
Marine ecosystems represent the largest biome on the earth. Until now, the relationships between the marine microbial inhabitants and the macroalgal species unclear, and the previous studies are insufficient. So, more research is required to advance our understanding of macroalgal- microbial interactions. In this study, we tried to investigate the relationship between the brown marine macroalga, Cystoseira myrica and its associated bacterial endophyte, Catenococcus thiocycli, as the first study concerning the production of bioactive secondary metabolites from a macroalgal species comparing with its associated endophytic bacteria. Secondary metabolites were extracted from alga and its bacterial endophyte with ethyl acetate and methanol. All extracts contained significant quantities of phenolics, flavonoids, tannins, and saponins. Strikingly, extracts possess antioxidant, anti-inflammatory and antimicrobial activities which were significantly correlated to phenolic and flavonoid contents.
海洋生态系统是地球上最大的生物群落。到目前为止，海洋微生物与大型藻类物种之间的关系还不清楚，之前的研究也不够充分。因此，需要更多的研究来增进我们对大型藻类-微生物相互作用的理解。在这项研究中，我们试图调查褐藻海洋巨藻 Cystoseira myrica 与其相关的细菌内生菌 Catenococcus thiocycli 之间的关系，这是第一项关于从大型藻类物种与其相关的内生细菌中产生生物活性次生代谢物的研究。用乙酸乙酯和甲醇从藻类及其细菌内生菌中提取次生代谢物。所有提取物均含有大量的酚类、类黄酮、单宁和皂苷。值得注意的是，提取物具有抗氧化、抗炎和抗菌活性，与酚类和类黄酮含量显著相关。
