TABLE 2.

Cell shape properties of R. sphaeroides grown under different growth conditionsa

Growth conditionMean (SEM) at cell cycle stage
Newly formedElongatingSeptation initiatedSeptation nearing completion
LengthWidthLengthWidthLengthWidthLengthWidth
Aerobic1.73 (0.02)1.17 (0.01)2.21 (0.03)1.16 (0.01)2.67 (0.03)1.13 (0.01)3.01 (0.03)1.16 (0.01)
High light1.52 (0.02)1.18 (0.01)1.99 (0.04)1.19 (0.01)2.37 (0.02)1.17 (0.01)2.66 (0.02)1.16 (0.01)
Low light1.40 (0.01)1.14 (0.01)1.79 (0.02)1.20 (0.01)2.15 (0.02)1.14 (0.01)2.45 (0.03)1.14 (0.02)
  • a Cells were grown aerobically or photoheterotrophically with different light levels. Cell lengths and cell widths (in micrometers) were measured from a total of ≥25 cells, from ≥5 fields of view, for each cell cycle stage. Mean and standard error values are shown.