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Table 2 Comparison of the K-values for the test and ancestral mutualistic consortia

From: A passive mutualistic interaction promotes the evolution of spatial structure within microbial populations

Experiment aMutualistic consortium b P
Evolution experiment A1 0.0013
  A2 0.0013
  A3 0.0013
  A4 0.0013
  A6 0.0013
  A7 0.0021
  A8 0.0013
  B1 0.0003
  B2 0.0003
  B7 0.0004
c,dCrossing experiment Panc + Tevol,a 0.015
(mutualistic consortium B2) Panc + Tevol,b 0.028
  Pevol + Tanc 0.17
  Pevol + Tevol,a 0.0002
  Pevol + Tevol,b 0.0009
  Pevol + Tevol,a + Tevol,b 0.0002
  1. aOnly those consortia that avoided extinction were analyzed. bBold font: statistically significant differences between the test and ancestral mutualistic consortia (P < 0.01). cDefinitions: Panc, ancestral strain of BW25113 (∆proC); Tanc, ancestral strain of BW25113 (∆trpC); Pevol, evolved strain of BW25113 (∆proC); Tevol,a, evolved strain of BW25113 (∆trpC); Tevol,b, evolved strain of BW25113 (∆trpC). dTevol,a and Tevol,b are two genetically different strains of BW25113 (∆trpC) that emerged within the B2 mutualistic consortium