Diazotrophic Bacterial Community of Degraded Pastures

Figure 1

Principal component (PC) analysis (a) and dendogram of the binary matrix (b) of the diversity of cultivated potentially diazotrophic bacteria determined through Polymerase Chain Reaction (BOX-PCR) in different niches of plant/bacteria association in B. decumbens Stapf. pasture in different stages of degradation. × represents highly degraded pasture and rhizospheric soil niche; + represents highly degraded pasture and root-endophytic niche; ○ represents partially degraded pasture and rhizospheric soil niche; represents partially degraded pasture and root-endophytic niche; ▲ represents slightly degraded pasture and rhizospheric soil niche; and ● represents slightly degraded pasture and root-endophytic niche.

(a)

(b)