@article{fdi:010091343,
  title = {{T}he monodominant species {S}pirotropis longifolia is mainly nodulated by strains of the genus {B}radyrhizobium outside the {B}. japonicum and {B}. elkanii superclades},
  author = {{L}e {R}oux, {C}. and {F}onty, {E}. and {B}rottier, {L}aurent and {B}ernard, {M}athilde and {P}rin, {Y}. and {S}abatier, {D}aniel},
  editor = {},
  language = {{ENG}},
  abstract = {{S}pirotropis longifolia ({DC}.) {B}aill. is organized in monodominant forest patches in {F}rench {G}uiana. {S}. longifolia root nodules and forest soil samples were collected in three monodominant populations of {S}. longifolia and in four zones, from the {S}. longifolia core dominance to the adjacent mixed forest where this species was absent. {S}. longifolia roots presented arbuscular mycorrhizal fungus ({AMF}) structures, but no ectomycorrhizae. {T}he presence of myconodule-like structures was only noted once. {I}solates of {S}. longifolia and of diverse {F}rench {G}uianese legume trees were 95% identified as {B}radyrhizobium spp. and rarely as {R}hizobium spp. {O}n a partial 16{S} r{DNA} phylogenetic tree, {S}. longifolia-associated bradyrhizobia were positioned in a separate cluster including the {B}radyrhizobium sp. {T}v2a-2 strain isolated from {T}achigali versicolor in {P}anama. {B}radyrhizobia of other forest legume trees were positioned identically, or differently, in various clusters. {A} partial 16{S}-23{S} r{DNA} internal transcribed spacer ({ITS}) phylogenetic tree confirmed that the main cluster accounting for 82% of the direct or trapped bradyrhizobia associated with {S}. longifolia was situated outside the {B}. japonicum and {B}. elkanii superclades, in the {T}v2a-2 superclade/{K}akadu supergroup. {I}n this cluster, other bradyrhizobia appeared that were associated with legumes from the tribes {O}rmosieae, {B}rongniartieae and {D}albergieae, suggesting the possibility of a shared pool of the most ancestral symbionts that are bradyrhizobia with the {C}aesalpinoid legumes and the early-branching {P}apilionoid legumes. {C}uriously, the seven monodominant {F}abaceae of the {A}mazonian forests were exclusively part of these subfamilies. {T}he link between ancestral symbiosis and monodominance still remains to be studied.},
  keywords = {{S}pirotropis longifolia ; {F}rench {G}uiana ; {B}radyrhizobium spp. ; {O}rmosieae ; {M}onodominance ; {A}rbuscular mycorrhizal fungi ; {GUYANE} {FRANCAISE}},
  booktitle = {},
  journal = {{S}ymbiosis},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[17 p.]},
  ISSN = {0334-5114},
  year = {2024},
  DOI = {10.1007/s13199-024-01010-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091343},
}