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Table 1 Physiology in chemostat culture.

From: Transcriptomic comparison of Aspergillus niger growing on two different sugars reveals coordinated regulation of the secretory pathway

C-source Strain Cbiomass
(gDW kg-1)
Cxylose/maltose
(μM)
Yx/s
(gDW gsubstrate-1)
Yx/C
(gDWgcarbon-1)
qCO2
(mmol g-1 h-1)
qO2
(mmol g-1h-1)
RQ qprotein-EC
(mg g-1 h-1)
C-recovery
(%)
Xylose AB94-85 4.06 ± 0.07 233 ± 6 0.54 ± 0.02 1.35 ± 0.04 3.40 ± 0.11 3.36 ± 0.14 1.01 ± 0.02 0.68 ± 0.01 98 ± 2
  ABGT1026 3.96 ± 0.07 256 ± 18 0.53 ± 0.01 1.32 ± 0.03 3.41 ± 0.10 3.42 ± 0.10 1.00 ± 0.01 0.72 ± 0.02 101 ± 3
Maltose AB94-85 3.68 ± 0.08* 160 ± 5 0.52 ± 0.01 1.23 ± 0.03* 2.92 ± 0.05* 3.38 ± 0.14 0.87 ± 0.05* 1.98 ± 0.28* 101 ± 1
  ABGT1026 3.68 ± 0.12* 158 ± 24 0.52 ± 0.02 1.23 ± 0.04* 2.84 ± 0.17* 3.57 ± 0.27 0.80 ± 0.10* 1.69 ± 0.24* 97 ± 2
  1. Steady state results of chemostat cultures with xylose or maltose as growth-limiting substrates. Standard deviations ( ± ) are given for mean values of triplicate independent steady state results. Cbiomass, dryweight biomass concentration; Cxylose/maltose, concentration of substrate (NB: maltose as glucose equivalents); Yxs, growth yield on substrate; YxC, growth yield on substrate carbon; qCO2, specific carbon dioxide evolution rate; qO2, specific oxygen consumption rate; RQ, respiratory quotient calculated as the ratio of CO2 production and O2 consumption rates; qprotein-EC, specific production rate of extracellular protein; C-recovery, carbon recovery. Two-tailed t-tests were used to evaluate significance (p < 0.05) of differences in each column (except substrate concentration and carbon recovery).
  2. * results are significantly different from unmarked results in the same column.
  3. † substrate concentration on maltose is given as concentration of glucose released into filtrate after incubation with α-glucosidase.