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Fig. 7 | Microbial Cell Factories

Fig. 7

From: Maintenance-energy requirements and robustness of Saccharomyces cerevisiae at aerobic near-zero specific growth rates

Fig. 7

Heat-shock tolerance of aerobic and anaerobic retentostat and batch cultures. a Data on heat shock tolerance of anaerobic retentostat cultures and from batch cultures are taken from previous studies [13, 34]. Batch cultures were characterized during the exponential growth phase (expo) and after ca. 2 h in stationary phase (SP) [34]. t50 represents incubation time at 53 °C at which 50 % of the initial viable cell population was still alive. b Transcript levels of genes that exhibit a significant growth-rate dependent expression in retentostat, and are also known to respond to environmental stress and heat shock according to [30, 35]. c Cellular contents of trehalose (open symbols) and glycogen (closed symbols) during prolonged retentostat cultivation. d Average-normalized expression profiles of genes involved in trehalose metabolism (see “Methods” section)

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