Microbial functional genes enriched in the Xiangjiang River sediments with heavy metal contamination

BMC Microbiology

Table 5 Mantel test of relationship of different gene categories to corresponding environmental variables

Gene category	Environmental variable	r_M	P
Arsenic resistant genes	Arsenic	0.3243	0.018
Chromium resistant genes	Chromium	0.8295	0.001
Copper resistant genes	Copper	0.5743	0.017
Mercury resistant genes	Mercury	0.8176	0.002
dsr genes	sulfur	0.5172	0.007
dsr genes	all studied metal	0.6927	0.013

The signal intensity of different functional genes among 9 samples was used as the first matrix; normalized related environmental variables were used as the second matrix

ISSN: 1471-2180