Fig. 1

Isothermal microcalorimetry thermal power (μW) curves of microbes in different culturing volumes (3, 6, 12 and 18 ml). a Pseudomonas brassicacearum MA250 in TSB, 25 °C. b Bacillus amyloliquefaciens subsp. plantarum UCMB5113 in LB, 25 °C. c Clonostachys rosea IK726 in PDB, 25 °C. The figures for Pseudomonas and Bacillus represent the averages and standard deviations of three independent experiments with 3–6 replicates per treatment. The figure for C. rosea IK726 represents the averages and standard deviations of six replicates per treatment