For instance, the abundance and
composition of native soil bacterial communities under different
fertilization practices using DGGE were examined by Shen et al.
(2010), while PLFA analysis was employed by Zhang et al. (2012).
They found opposite patterns of microbial community structure
after chemical fertilizer and organic manure inputs. However, their
results may introduce an incomplete estimate of phylogenetic
diversity, particularly in environmental samples containing
diverse microorganisms, because only the predominant and
specific microbial types can be identified by DGGE and PLFA,
respectively (Zelles, 1997; Crecchio et al., 2007).