Disease resistance and terminal fragment length polymorphism (T-RFLP) analysis of endophyte communities in <i>Methylobacterium</i>-inoculated greenhouse-grown potato plants.

<p>(A) Resistance of greenhouse-grown potato cv. Bellarosa to <i>Pseudomonas syringae pv.</i> tomato DC3000 induced by <i>Methylobacterium</i> sp. IMBG290 at densities 10³ (3) and 10⁵ (5) CFU ml⁻¹ and (B) analysis of the corresponding bacterial communities (combined data of labeled forward (F) and reverse (R) T-RFs of the amplicon) of shoots and roots at inoculation density of 10⁵. Disease resistance data are means ± SD (<i>n</i> = 5), letters indicate significant difference between treatments and control by Student’s <i>t</i>-test (a, b and c indicate P<0.05, 0.01 and 0.001, respectively). Cluster plots generated by Additive Main Effects and Multiplicative Interaction (AMMI) analysis are constructed from three T-RFLP replicates and contain the information on beta diversity (Beta), the percentage of the main (M) and interaction (I) effects, the principal T-RFs responsible for the data ordination for each of the interaction principal components axes (IPCA1 and 2), and the percentage of variance captured by each of the axes. Different shapes indicate grouping patterns.