Fig. 2

Analysis of intestinal flora difference between CRC patients in Overweight group and Normal weight group. A Cladogram of LEfSe analysis. Node size represents species abundance size and is proportional to species abundance size. Node colors represent groups, and yellow nodes in branches represent species that do not differ significantly in abundance between groups. Red nodes represent species with significantly higher abundance in group Normal weight, and green nodes represent species with significantly higher abundance in group Overweight. Nodes in each layer represent phyla/class/order/family/genus/species from the inside out, and species marker notes in each layer represent phyla/class/order/family/genus/species from the outside in. B LDA bar graph based on 16S rRNA gene sequencing. The color of the bar graph represents the group, the horizontal coordinate is the LDA score (processed by log10), the vertical coordinate represents the distinct species in the group with significantly higher abundance, and the length of the histogram represents the magnitude of the LDA score value. C Network diagram of BMI-related differential gut flora correlation. Each node represents each species, the node color represents the group, the node size represents the number of edges connected to the node, the larger the node, the more the number of edges connected to the node, the connection line represents a significant correlation between the two nodes, Spearman phase relationship value less than 0 (negative correlation) represents the blue line, and the number of nodes is the same. A Spearman correlation value greater than 0 (positive correlation) represents a red line, and the thicker the line, the greater the Spearman correlation coefficient between the two nodes