@article{fdi:010067607, title = {{N}od{D}1 and {N}od{D}2 are not required for the symbiotic interaction of {B}radyrhizobium {ORS}285 with {N}od-factor-independent {A}eschynomene legumes}, author = {{N}ouwen, {N}ico and {F}ardoux, {J}o{\¨e}l and {G}iraud, {E}ric}, editor = {}, language = {{ENG}}, abstract = {{P}hotosynthetic {B}radyrhizobium strain {ORS}285 forms nitrogen-fixing nodules on the roots and stems of tropical aquatic legumes of the {A}eschynomene genus. {D}epending on the {A}eschynomene species, this symbiotic interaction does or does not rely on the synthesis of {N}od-factors ({NF}s). {H}owever, whether during the interaction of {B}radyrhizobium {ORS}285 with {NF}-independent {A}eschynomene species the nod genes are expressed and if the general regulator {N}od{D} plays a symbiotic role is unknown. {E}xpression studies showed that in contrast to the interaction with the {NF}-dependent {A}eschynomene species, {A}. afraspera, the {B}radyrhizobium {ORS}285 nod genes are not induced upon contact with the {NF}-independent host plant {A}. indica. {M}utational analysis of the two nod{D} genes present in {ORS}285, showed that deletion of nod{D}1 and nod{D}2 did not affect the symbiotic interaction between {B}radyrhizobium {ORS}285 and {A}. indica whereas the deletions had an effect on the symbiotic interaction with {A}. afraspera plants. {I}n addition, when the expression of nod genes was artificially induced by adding naringenin to the plant growth medium, the nodulation of {A}. indica by {B}radyrhizobium {ORS}285 is delayed and resulted in lower nodule numbers.}, keywords = {}, booktitle = {}, journal = {{P}los {O}ne}, volume = {11}, numero = {6}, pages = {e0157888 [12 p.]}, ISSN = {1932-6203}, year = {2016}, DOI = {10.1371/journal.pone.0157888}, URL = {https://www.documentation.ird.fr/hor/fdi:010067607}, }