TY  - JOUR
AU  - Caron, H.
AU  - Molino, J.-F.
AU  - Sabatier, D.
AU  - Léger, P.
AU  - Chaumeil, P.
AU  - Scotti-Saintagne, C.
AU  - Frigério, J.-M.
AU  - Scotti, I.
AU  - Franc, A.
AU  - Petit, R.J.
PY  - 2019//
TI  - Chloroplast DNA variation in a hyperdiverse tropical tree community
T2  - Ecology and Evolution
JO  - Ecology and Evolution
SP  - 4897
EP  - 4905
VL  - 9
IS  - 8
PB  - John Wiley and Sons Ltd
KW  - chloroplast DNA
KW  - DNA barcoding
KW  - genetic diversity
KW  - hybridization
KW  - incomplete lineage sorting
KW  - introgression
KW  - species diversity
KW  - tropical trees
N2  - We investigate chloroplast DNA variation in a hyperdiverse community of tropical rainforest trees in French Guiana, focusing on patterns of intraspecific and interspecific variation. We test whether a species genetic diversity is higher when it has congeners in the community with which it can exchange genes and if shared haplotypes are more frequent in genetically diverse species, as expected in the presence of introgression. We sampled a total of 1,681 individual trees from 472 species corresponding to 198 genera and sequenced them at a noncoding chloroplast DNA fragment. Polymorphism was more frequent in species that have congeneric species in the study site than in those without congeners (30% vs. 12%). Moreover, more chloroplast haplotypes were shared with congeners in polymorphic species than in monomorphic ones (44% vs. 28%). Despite large heterogeneities caused by genus-specific behaviors in patterns of hybridization, these results suggest that the higher polymorphism in the presence of congeners is caused by local introgression rather than by incomplete lineage sorting. Our findings suggest that introgression has the potential to drive intraspecific genetic diversity in species-rich tropical forests.
SN  - 20457758 (Issn)
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064589265&doi=10.1002%2fece3.5096&partnerID=40&md5=c189100161a0edcc851e4cfd526480c3
L1  - http://php.ecofog.gf/refbase/files/caron/2019/870_Caron_etal2019.pdf
UR  - http://dx.doi.org/10.1002/ece3.5096
N1  - exported from refbase (http://php.ecofog.gf/refbase/show.php?record=870), last updated on Tue, 07 May 2019 09:37:01 -0300
ID  - Caron_etal2019
ER  -