Response of Bacterial Community Structure in the Bulk Soil and Rice Straw Residues under Different Crop Rotation Systems

Figure 3

Bacterial 16S rRNA gene DGGE fingerprints (a) obtained from the communities present in the rice straw residues in various microcosm setups and results of the corresponding UPGMA cluster analysis (b) and PCA analysis (c) at day 15 (top), at day 30 (center) and day 50 (bottom) of incubation. In the DGGE fingerprint, the microcosm setups from which the fingerprints originated are indicated above the lane numbers. Lane L: bacterial 16S rRNA gene DGGE ladder. In the UPGMA clustering, the number mentioned before the indicated microcosm setup corresponds to the lane number in the DGGE fingerprint gel. In PCA analysis, the symbol corresponds with a particular microcosm set-up as follows: (solid triangle) SR-AN; (solid diamond) SR-AE; (solid circle) SB-AN and (solid square) SB-AE.

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