The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism
Figure 2
Morphometric analysis of cells in Aphanothece caldariorum-like and Gloeobacter violaceus cultures.
(A) and (B) increasing cell length corresponding to batch cultures of increasing age of A. caldariorum-like strain CCALA 981 and G. violaceus PCC 7421 (Kruskal-Wallis test, p<0.001), difference between individual pairs of batches was also significant (two-tailed t-test, p<0.02 except for a pair of batches 41 and 50 days old in PCC 7421, for which the difference was at the edge of statistical significance, p = 0.045); (C) and (D) increasing cell length:width ratio in the same batch cultures as previously (Kruskal-Wallis test, p<0.001), difference between individual pairs of batches was also significant (two-tailed t-tests, p<0.001) except for a pair of batches 41 and 50 days old in PCC 7421. One hundred cells were measured in each sample.