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Table 2 Results of planned contrasts following one-way MANOVA on mean ZOI across biofilm replicates and time

From: The evolution of antibiotic susceptibility and resistance during the formation of Escherichia colibiofilms in the absence of antibiotics

Contrast

Antibiotics that differ significantly

Ancestor vs. 15 days

CFP75↓, PB300↓

Ancestor vs. 30 days

CFP75↓, GM10↓, PB300↓, SAM20↓, TE30↓

Ancestor vs. 60 days

none

15 days vs. 30 days

GM10↑

15 days vs. 60 days

CIP5↓, E15↓, GM10↓, K30↓, NA30↓, PB300↓, S10↓, TE30↓

30 days vs. 60 days

CIP5↓, GM10↓, K30↓, PB300↓, S10↓, SAM20↓, TE30↓

Biofilm 1 vs. biofilm 2

none

Biofilm 1 vs. biofilm 3

PB300↑

Biofilm 2 vs. biofilm 3

none

  1. Symbols denote direction of change: ↓ = smaller ZOI for latter group, ↑ = larger ZOI for latter group.