@article{fdi:010074052, title = {{G}enetic structuring in a {N}eotropical palm analyzed through an {A}ndean orogenesis-scenario}, author = {{E}scobar, {S}. and {P}intaud, {J}ean-{C}hristophe and {B}alslev, {H}. and {B}ernal, {R}. and {M}oraes {R}amirez, {M}. and {M}illan, {B}. and {M}ontufar, {R}.}, editor = {}, language = {{ENG}}, abstract = {{A}ndean orogenesis has driven the development of very high plant diversity in the {N}eotropics through its impact on landscape evolution and climate. {T}he analysis of the intraspecific patterns of genetic structure in plants would permit inferring the effects of {A}ndean uplift on the evolution and diversification of {N}eotropical flora. {I}n this study, using microsatellite markers and {B}ayesian clustering analyses, we report the presence of four genetic clusters for the palm {O}enocarpus bataua var. bataua which are located within four biogeographic regions in northwestern {S}outh {A}merica: (a) {C}hoco rain forest, (b) {A}motape-{H}uancabamba {Z}one, (c) northwestern {A}mazonian rain forest, and (d) southwestern {A}mazonian rain forest. {W}e hypothesize that these clusters developed following three genetic diversification events mainly promoted by {A}ndean orogenic events. {A}dditionally, the distinct current climate dynamics among northwestern and southwestern {A}mazonia may maintain the genetic diversification detected in the western {A}mazon basin. {G}enetic exchange was identified between the clusters, including across the {A}ndes region, discarding the possibility of any cluster to diversify as a distinct intraspecific variety. {W}e identified a hot spot of genetic diversity in the northern {P}eruvian {A}mazon around the locality of {I}quitos. {W}e also detected a decrease in diversity with distance from this area in westward and southward direction within the {A}mazon basin and the eastern {A}ndean foothills. {A}dditionally, we confirmed the existence and divergence of {O}.bataua var. bataua from var. oligocarpus in northern {S}outh {A}merica, possibly expanding the distributional range of the latter variety beyond eastern {V}enezuela, to the central and eastern {A}ndean cordilleras of {C}olombia. {B}ased on our results, we suggest that {A}ndean orogenesis is the main driver of genetic structuring and diversification in {O}.bataua within northwestern {S}outh {A}merica.}, keywords = {genetic divergence ; genetic diversity ; microsatellite markers ; {O}enocarpus ; phylogeography ; {COLOMBIE} ; {EQUATEUR} ; {PEROU} ; {BOLIVIE} ; {GUYANE} {FRANCAISE} ; {ANDES} ; {AMAZONIE}}, booktitle = {}, journal = {{E}cology and {E}volution}, volume = {8}, numero = {16}, pages = {8030--8042}, ISSN = {2045-7758}, year = {2018}, DOI = {10.1002/ece3.4216}, URL = {https://www.documentation.ird.fr/hor/fdi:010074052}, }