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. 2019 Jun 14;10:1319. doi: 10.3389/fmicb.2019.01319

FIGURE 1.

FIGURE 1

Photosynthetic microbial biofilms growing on soil aggregates from Organic (A–C) or Conventional (D–F) cropping system, along the different incubation conditions (50 days). The Dark condition (C,F) did not show visible algae growth. Various phenotypes of indigenous cyanobacteria and algal colonies covered the aggregate surfaces of incubated microcosms in Light (A,D) and Light + IPU conditions (B,E) (see Table 1 for acronym description). The filaments bridging between aggregates (A,B) are probably cyanobacteria and moss rhizoids.