Fig. 1From: Gene expression during the formation of resting spores induced by nitrogen starvation in the marine diatom Chaetoceros socialisNitrogen depletion induces the formation of resting spores in the diatom Chaetoceros socialis. Light micrograph of a colony of vegetative cells (a) and a colony in which vegetative cells turned into resting spores (b); scale bars = 10 µm. Time course concentration of vegetative cells and spores (cells, spores mL−1; left axis) and percentage of spores (right axis) in cultures grown in nitrogen-replete control (c) and in nitrogen-deplete treatment (d); data are shown as average ± S.D. (n = 3). Samples for the differential gene expression analysis were collected on day 2 in the control and on days 2 (T2), 3 (T3) and 4 (T4) for the treatment and are marked with dashed green circles in panels c and d, respectivelyBack to article page