@article{fdi:010037775, title = {{B}urkholderia phymatum is a highly effective nitrogen-fixing symbiont of {M}imosa spp. and fixes nitrogen ex planta}, author = {{E}lliott, {G}. {N}. and {C}hen, {W}. {M}. and {C}hou, {J}. {H}. and {W}ang, {H}. {C}. and {S}heu, {S}. {Y}. and {P}erin, {L}. and {R}eis, {V}. {M}. and {M}oulin, {L}ionel and {S}imon, {M}. {F}. and {B}ontemps, {C}. and {S}utherland, {J}. {M}. and {B}essi, {R}. and de {F}aria, {S}. {M}. and {T}rinick, {M}. {J}. and {P}rescott, {A}. {R}. and {S}prent, {J}. {I}. and {J}ames, {E}. {K}.}, editor = {}, language = {{ENG}}, abstract = {{T}he ability of {B}urkholderia phymatum {STM}815 to effectively nodulate {M}imosa spp., and to fix nitrogen ex planta, was compared with that of the known {M}imosa symbiont {C}upriavidus taiwanensis {LMG}19424. {B}oth strains were equally effective symbionts of {M}. pudica, but nodules formed by {STM}815 had greater nitrogenase activity. {STM}815 was shown to have a broader host range across the genus {M}imosa than {LMG}19424, nodulating 30 out of 31 species, 21 of these effectively. {LMG}19424 effectively nodulated only nine species. {GFP}-marked variants were used to visualise symbiont presence within nodules. {STM}815 gave significant acetylene reduction assay ({ARA}) activity in semisolid {JMV} medium ex planta, but no {ARA} activity was detected with {LMG}19424. 16{S} r{DNA} sequences of two isolates originally from {M}imosa nodules in {P}apua {N}ew {G}uinea ({NGR}114 and {NGR}195{A}) identified them as {B}urkholderia phymatum also, with nod{A}, nod{C} and nif{H} genes of {NGR}195{A} identical to those of {STM}815. {B}. phymatum is therefore an effective {M}imosa symbiont with a broad host range, and is the first reported beta-rhizobial strain to fix nitrogen in free-living culture.}, keywords = {beta rhizobia ; {C}upriavidus taiwanensis ; free living ; host range ; nitrogen fixation ; nodulation}, booktitle = {}, journal = {{N}ew {P}hytologist}, volume = {173}, numero = {1}, pages = {168--180}, ISSN = {0028-646{X}}, year = {2007}, DOI = {10.1111/j.1469-8137.2006.01894.x}, URL = {https://www.documentation.ird.fr/hor/fdi:010037775}, }