Following the publication of the original article [1], we were notified that the supplementary material contains the incorrect links. The corrected Additional files can be found below: Supplementary Information The online version contains supplementary material available at https://doi. org/10.1186/s12866-021-02200-7. Additional file 1: Supplementary Table 1. Significant genera from PERMANOVA analysis Additional file 2: Supplementary Table 2. Genera correlated with aging with Spearman correlation Additional file 3: Supplementary Table 3. Critical genera revealed by SPD Additional file 4: Supplementary Figure 1. The relative abundance of all the 35 critical genera across different age groups. Author details 1Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China. 2Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta 30332, USA.