@article{fdi:010087501,
  title = {{T}he allopolyploid origin(s) and diversification of {N}ew {C}aledonian {G}revillea ({P}roteaceae)},
  author = {{P}illon, {Y}ohan and {M}ajourau, {P}. and {G}otty, {K}. and {I}snard, {S}andrine and {F}ogliani, {B}. and {C}hase, {M}. {W}. and {K}ergoat, {G}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he assembly of island plant communities is the result of a number of processes: immigration (dispersal), speciation, and extinction. {U}sing four plastid genes and one low-copy nuclear gene, we investigated the origin of the {N}ew {C}aledonian {G}revillea ({P}roteaceae), an otherwise largely {A}ustralian genus. {I}n the combined plastid analysis, the species form two distinct clades, the exul (four species) and gillivrayi groups (six species), within group 3 of {G}revillea. {A}ll {N}ew {C}aledonian {G}revillea display two distinct copies of {PHYA}, one copy in group 3, and another in group 4. {P}reviously published chromosome counts for {G}. meisneri and two new genome size estimates of {G}. gillivrayi and {G}. rubiginosa suggest that these plants are tetraploids. {A}ltogether, the current data available suggest that {N}ew {C}aledonian {G}revillea are allotetraploids, resulting from one or two hybridisation events between two or three distinct parents. {A} possible scenario is that modern {G}revillea has descended from a hybrid swarm that formed 9-13 {M}ya between multiple immigrants (now extinct) that reached the island. {G}revillea can be added to the list of island plant radiations with an early history of hybridisation and polyploidy. {T}he relative importance, location and timing of these two mechanisms remain to be elucidated. {T}he two groups of {N}ew {C}aledonian {G}revillea may be easily distinguished by their inflorescences, flowers and fruits, with the gillivrayi group displaying greater ecological and morphological diversity. {T}he seed characteristics of {N}ew {C}aledonian {G}revillea are consistent with their pioneer behavior.},
  keywords = {{A}daptive radiation ; genome duplication ; {I}sland biogeography ; manganese ; seeds ; serpentine ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{B}otany {L}etters},
  volume = {170},
  numero = {3},
  pages = {425--438},
  ISSN = {2381-8107},
  year = {2023},
  DOI = {10.1080/23818107.2023.2187454},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087501},
}