Fig. 1

Effects of different brewing materials and spatial locations on eukaryotic community composition in pit mud. (A) PCoA profile; (B) OTU number; (C) Shannon index; (D) Chao index; (E) Composition of the dominant phyla; (F) Major subgroups of SAR and Fungi. M3GUL, the pit mud sample was collected at the upper layer (0.5 m below the cellar surface) of the three-grain Baijiu brewing pit. M3GML, the pit mud sample was collected at the middle layer (1.3 m below the cellar surface) of the three-grain Baijiu brewing pit. M3GBL, the pit mud sample was collected at the bottom of the three-grain Baijiu brewing pit. M5GUL, the pit mud sample was collected at the upper layer of the five-grain Baijiu brewing pit. M5GML, the pit mud sample was collected at the middle layer of the five-grain Baijiu brewing pit. M5GBL, the pit mud sample was collected at the bottom of the five-grain Baijiu brewing pit. * P < 0.05; ** P < 0.01; *** P < 0.001.