FIG. 3.
Transcript levels of the indicated cellulosomal genes as a function of the growth rate. The amounts of the respective mRNAs were determined by RPAs and converted to the numbers of transcripts per cell, based on the average measured amount of total RNA in a single cell (0.18 pg/cell). Values represent the averages of several (at least three) measurements, with accuracies of ±25%. Continuous cultures (filled circles) were operated with carbon (cellobiose) limitation at dilution rates from 0.04 to 0.21 h−1. Batch cultures (open circles) were grown to exponential phase on either cellulose or cellobiose at rates of 0.23 and 0.35 h−1, respectively. Note the differences in the scales of the different graphs.