@article{fdi:010078954,
  title = {{T}he hyperdominant tropical tree {E}schweilera coriacea ({L}ecythidaceae) shows higher genetic heterogeneity than sympatric {E}schweilera species in {F}rench {G}uiana},
  author = {{H}euertz, {M}. and {C}aron, {H}. and {S}cotti-{S}aintagne, {C}. and {P}etronelli, {P}. and {E}ngel, {J}ulien and {T}ysklind, {N}. and {M}iloudi, {S}. and {G}aiotto, {F}. {A}. and {C}have, {J}. and {M}olino, {J}ean-{F}ran{\c{c}}ois and {S}abatier, {D}aniel and {L}oureiro, {J}. and {B}udde, {K}. {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground and aims - {T}he evolutionary history of {A}mazonia's hyperabundant tropical tree species. also known as "hyperdominant" species, remains poorly investigated. {W}e assessed whether the hyperdominant {E}schweilera coriacea ({DC}.) {S}.{A}.{M}ori ({L}ecythidaceae) represents a single genetically cohesive species, and how its genetic constitution relates to other species from the same {G}lade with which it occurs sympatrically in {F}rench {G}uiana. {M}ethods - {W}e sampled 152 individuals in nine forest sites in {F}rench {G}uiana, representing 11 species of the genus {E}schweilera all belonging to the {P}arvifolia {G}lade, with emphasis on {E}. coriacea. {S}amples were genotyped at four simple sequence repeat ({SSR}) markers. {W}e delimited gene pools, i.e.. genetically coherent putative taxa, using {STRUCTURE} software and principal component analysis. {W}e compared the genetic assignment of individuals with their morphological species determination and estimated genetic diversity and differentiation for gene pools and species. {W}e also estimated genome size using flow cytometry. {K}ey results - {SSR} profiles commonly displayed up to four alleles per genotype, suggesting that the investigated {E}schweilera species bear a paleopolyploid signature. {F}low cytometty suggested that the studied species are diploid with haploid genome sizes of 871-1046 {M}bp. {W}e detected five gene pools and observed a good correspondence between morphological and genetic delimitation for {E}schweilera sagotiana {M}iers and the undescribed morphospecies {E}. sp. 3 (which resembles {E}. grandiflora ({A}ubl.) {S}andwith), and to a lesser extent for {E}. decolorans {S}andwith and {E}. micrantha ({O}.{B}erg) {M}iers. {E}schweilera coriacea was the most genetically diverse species and included individuals assigned to each gene pool. {C}onclusions - {W}e found no conclusive evidence for cryptic species within {E}. coriacea in {F}rench {G}uiana. {SSR}s detected fewer gene pools than expected based on morphology in the {P}arvifolia {G}lade but discriminated evolutionary relationships better than available plastid markers. {A} positive trend between demographic abundance of species and allelic richness illustrates that hyperdominants may have a high evolutionary potential. {T}his hypothesis can be tested using more powerful genomic data in combination with tree phenotypic trait variation and characterization of niche breadth, to enhance our understanding of the causes of hyperdominance in {A}mazonian trees.},
  keywords = {{E}schweilera ; microsatellites ; species delimitation ; hyperdominant ; tropical trees ; species complex ; cryptic species ; {GUYANE} {FRANCAISE}},
  booktitle = {},
  journal = {{P}lant {E}cology and {E}volution},
  volume = {153},
  numero = {1},
  pages = {67--81},
  ISSN = {2032-3913},
  year = {2020},
  DOI = {10.5091/plecevo.2020.1565},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078954},
}