@article{fdi:010057190, title = {{H}eart of endosymbioses : transcriptomics reveals a conserved genetic program among arbuscular mycorrhizal, actinorhizal and legume-rhizobial symbioses}, author = {{T}romas, {A}lexandre and {P}arizot, {B}. and {D}iagne, {N}. and {C}hampion, {A}ntony and {H}ocher, {V}al{\'e}rie and {C}issoko, {M}. and {C}rabos, {A}mandine and {P}rodjinoto, {H}. and {L}ahouze, {B}. and {B}ogusz, {D}idier and {L}aplaze, {L}aurent and {S}vistoonoff, {S}ergio}, editor = {}, language = {{ENG}}, abstract = {{T}o improve their nutrition, most plants associate with soil microorganisms, particularly fungi, to form mycorrhizae. {A} few lineages, including actinorhizal plants and legumes are also able to interact with nitrogen-fixing bacteria hosted intracellularly inside root nodules. {F}ossil and molecular data suggest that the molecular mechanisms involved in these root nodule symbioses ({RNS}) have been partially recycled from more ancient and widespread arbuscular mycorrhizal ({AM}) symbiosis. {W}e used a comparative transcriptomics approach to identify genes involved in establishing these 3 endosymbioses and their functioning. {W}e analysed global changes in gene expression in {AM} in the actinorhizal tree {C}. glauca. {A} comparison with genes induced in {AM} in {M}edicago truncatula and {O}ryza sativa revealed a common set of genes induced in {AM}. {A} comparison with genes induced in nitrogen-fixing nodules of {C}. glauca and {M}. truncatula also made it possible to define a common set of genes induced in these three endosymbioses. {T}he existence of this core set of genes is in accordance with the proposed recycling of ancient {AM} genes for new functions related to nodulation in legumes and actinorhizal plants.}, keywords = {}, booktitle = {}, journal = {{P}los {O}ne}, volume = {7}, numero = {9}, pages = {e44742}, ISSN = {1932-6203}, year = {2012}, DOI = {10.1371/journal.pone.0044742}, URL = {https://www.documentation.ird.fr/hor/fdi:010057190}, }