Comparison of transcriptome between free-living and symbiotic cells of Frankia alni ACN14a

ABSTRACT: The actinobacteria Frankia alni is able to induce the formation of nodules on the root of a large spectrum of actinorhizal plants, where it converts dinitrogen to ammonia in exchange for plant photosynthates. In the present study, transcriptional analyses were performed on nitrogen-replete free-living cells and on Alnus glutinosa nodule bacteria, using whole genome microarrays. Distribution of nodule-induced genes on the genome was found to be mostly over regions with high synteny between three Frankia genomes, while nodule-repressed genes, which were mostly hypothetical and not conserved, were spread around the genome. Genes known to be related to symbiosis were highly induced: nif (nitrogenase), hup2 (hydrogenase uptake), suf (sulfur-iron cluster) and shc (hopanoids synthesis). The expre

ORGANISM(S): Frankia alni ACN14a

SUBMITTER: Ken-ichi Kucho 

PROVIDER: E-GEOD-18190 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress