Research Article

Diazotrophic Bacterial Community of Degraded Pastures

Figure 2

Principal component (PC) analysis (a) and dendogram of the binary matrix (b) of the total diazotrophic bacterial community determined through Denaturing Gradient Gel Electrophoresis (DGGE) of the nifH gene in different regions of the plant/bacteria association in B. decumbens Stapf. pasture in different stages of degradation. P1-R represents the highly degraded pasture and rhizospheric soil niche; P2-R represents the partially degraded pasture and rhizospheric soil niche; P3-R represents the slightly degraded pasture and rhizospheric soil niche; P1-E represents the highly degraded pasture and root-endophytic niche; P2-E represents the partially degraded pasture and root-endophytic niche; and P3-E represents the slightly degraded pasture and root-endophytic niche.
(a)
(b)