@article{fdi:010088739,
  title = {{C}an seed exchange networks explain the morphological and genetic diversity in perennial crop species ? {T}he case of the tropical fruit tree {D}acryodes edulis in rural and urban {C}ameroon},
  author = {{R}imlinger, {A}. and {D}uminil, {J}{\'e}r{\^o}me and {A}vana-{T}ientcheu, {M}. {L}. and {C}arri{\`e}re, {S}t{\'e}phanie {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ocietal {I}mpact {S}tatement {C}rop seed exchange networks, shaped by social dynamics, strongly influence the organization and breadth of plant diversity in human-managed environments. {I}ntegrating an urban and market perspective, this study explores the diversity dynamics of a socio-economically important {C}entral {A}frican fruit tree species, the {A}frican plum tree. {T}ree owners in urban, peri-urban and rural sites use seeds from different origins as their main propagation material, leading to locational variations in genetic diversity and structure. {T}his analysis contributes toward building a framework to inform the research agenda of cultivated {A}frican fruit trees, by highlighting the important role of urban centers in safeguarding crop genetic resources.{S}ummary center dot {B}iocultural factors constrain the dynamics of crop species diversity. {H}ere, we considered different aspects of the social, spatial and temporal dynamics of morphological and genetic diversity in a multi-purpose perennial crop, the {A}frican plum tree ({D}acryodes edulis). {W}e assessed (i) how seed exchange networks were organized along urbanization gradients, and how they influenced the distribution of species diversity; (ii) the temporal dynamic of seed exchange network by characterizing species genetic diversity through time.center dot {T}o do so, the study was carried out in {C}ameroon, where we focused on three urbanization gradients, covering urban, peri-urban and rural areas, corresponding to three different ethnic groups ({B}amileke, {B}assa, {B}eti). {W}e combined interviews with tree owners and nuclear microsatellite-based genetic analyses.center dot {T}ree owners from urban and peri-urban sites primarily used distant seed sources, acquired in the market or from their village of origin, as propagation material, whereas tree owners in rural sites relied primarily on village-level seeds. {I}n turn, genetic diversity was not evenly distributed, with rural sites exhibiting their own genetic clusters. {O}n the contrary, the genetic diversity of urban sites was enhanced by extensive human-mediated seed flows. {L}ooking at trees from different age classes, we found that genetic diversity was stable over time.center dot {O}verall, this first attempt to combine different levels of diversity for {A}frican plum trees in commercially connected areas expands the scope for in situ intraspecific conservation by highlighting the contribution of urbanized areas.},
  keywords = {agrobiodiversity ; crop genetic resources ; indigenous fruit ; local seed systems ; tropical trees ; {CAMEROUN}},
  booktitle = {},
  journal = {{P}lants {P}eople {P}lanet},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[16 p.]},
  year = {2023},
  DOI = {10.1002/ppp3.10455},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088739},
}