Table 2.

The number of positive and negative samples collected from each of the eight species.

Dataset Name	${\mathit{S}}_{\mathit{i}}^{\mathbf{+}}$	${\mathit{S}}_{\mathit{i}}^{\mathbf{-}}$	${\mathit{S}}_{\mathit{i}}\mathbf{=}{\mathit{S}}_{\mathit{i}}^{\mathbf{+}}\mathbf{\cup }{\mathit{S}}_{\mathit{i}}^{\mathbf{-}}$
Caenorhabditis elegans (C. elegans)	1154	1154	2308
Drosophila melanogaster (D. melanogaster)	1769	1769	3538
Arabidopsis thaliana (A. thaliana)	1978	1978	3956
Escherichia coli (E. coli)	388	388	776
Geoalkalibacter subterraneus (G. subterraneus)	906	906	1812
Geobacter pickeringii (G. pickeringi)	569	569	1165
Fragaria vesca (F. vesca)	4321	4321	8642
Rosa chinensis (R. chinensis)	2421	2421	4842