@article{fdi:010081330,
  title = {{A}ssemblages of anoxygenic phototrophic bacteria in tank bromeliads exhibit a host-specific signature},
  author = {{V}ergne, {A}. and {D}arbot, {V}. and {B}ardot, {C}. and {E}nault, {F}. and {L}e {J}eune, {A}. {H}. and {C}arrias, {J}. {F}. and {C}orbara, {B}. and {C}ereghino, {R}. and {L}eroy, {C}{\'e}line and {J}eanthon, {C}. and {G}iraud, {E}ric and {M}ary, {I}. and {L}ehours, {A}. {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {1. {A}noxygenic phototrophic bacteria ({APB}) are a very significant metabolic functional group in the phytotelmata of tank-forming {B}romeliaceae plants. {C}onsidering the close relationships existing between the bromeliad and its tank microbiota, the dominance of {APB} raises the question of their role in the ecology and evolution of these plants. 2. {H}ere, using puf{M} gene sequencing for taxonomic profiling, we investigated the structure of {APB} communities in the tanks of five bromeliad species exhibiting different habitat characteristics (i.e. physicochemical factors associated with the host), and occurring in different localities of {F}rench {G}uiana. 3. {W}e found that {APB} assemblages were specific to plant species and were less dependent on location or on bromeliad habitat characteristics. {T}his convergence suggests that the identity of the bromeliad species per se is more important than habitat filtering or dispersal to control specific assembly rules for {APB}. 4. {T}he puf{M} {OTU}s were affiliated with five orders of {A}lpha- and {B}eta-proteobacteria ({R}hodobacterales, {S}phingomonadales, {R}hizobiales, {B}urkholderiales and {R}hodospirillales), and we assume that they may be major components of the core microbiota of plant-held waters. 5. {O}ur findings also revealed that up to 79% of the sequences were affiliated with {APB} clades possessing nitrogen-fixing genes suggesting that this metabolic capability is widespread within the {APB} community inhabiting tank bromeliads. {W}e hypothesized that bromeliads may benefit nutritionally from associations with free-living {APB} capable to fix atmospheric nitrogen. 6. {S}ynthesis. {U}nderstanding the dominance of {APB} in tank bromeliads and determining whether a potential interplay exists between these partners is an intriguing aspect of possible mutualistic and coevolving interactions between the two existing forms of chlorophototrophy (i.e. bacteriochlorophyll-based anoxygenic and chlorophyll-based oxygenic phototrophy). {I}n the present study, we found that bromeliad species was the main factor that explained variance in {APB} community composition. {T}hese findings suggest that {APB} and tank bromeliads may have a close, mutualistic relationship and we hypothesize according to our genomic analyses that {APB} may promote the bromeliad growth by provisioning essential nutrients like nitrogen.},
  keywords = {{I}llumina sequencing ; nitrogen fixation ; phylogenetic analyses ; plant-bacteria interactions},
  booktitle = {},
  journal = {{J}ournal of {E}cology},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[16 p.]},
  ISSN = {0022-0477},
  year = {2021},
  DOI = {10.1111/1365-2745.13657},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081330},
}