TABLE 1.

Percentage of singleton bacterial genera present in each category of the analyzed comparisons^a

Category	% of bacterial genera present as singleton
Leaf	57
Root	51
Shoot	44
Seed	56
High richness medium	47
Medium richness medium	44
Low richness medium	40
Selective medium	63
Arid soil	42
Nutrient rich soil	40
Polluted soil	47
Saline soil	69
Farmed plant	38
Wild plant	49

^aThe table summarizes the relative abundance of singleton bacterial genera over the total cultured genera present in each category.