Figure 1.

Effects of Bacillus megaterium on growth of wild-type lines of Arabidopsis (Col-0 and C-24 ecotypes), and on cytokinin-signaling mutants. Plant material was harvested 6 days after bacterial inoculation at 5 cm from the root tip. Shoots and roots were excised at the root-shoot junction and the fresh weight was determined on an analytical balance. (A) Shoot fresh weight. (B) Root fresh weight. Values shown represent the mean of four groups of 20 seedlings ± standard deviation. Different letters are used to indicate means that differ significantly (p < 0.05).