Available on ORBi since
19 November 2020
Article (Scientific journals)
Extensive seed and pollen dispersal and assortative mating in the rain forest tree Entandrophragma cylindricum (Meliaceae) inferred from indirect and direct analyses
Monthe, F. K.; Hardy, O. J.; Doucet, Jean-Louis  et al.
2017 • In Molecular Ecology, 26 (19), p. 5279-5291
Peer Reviewed verified by ORBi
 

Files


Full Text
mec.14241.pdf
Publisher postprint (669.53 kB)

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Cameroon; Meliaceae; Gene Flow; Genetic Variation; Genetics, Population; Genotype; Microsatellite Repeats; Models, Genetic; Pollen; Pollination; Rainforest; Seed Dispersal; Trees
Abstract :
[en] Pollen and seed dispersal are key processes affecting the demographic and evolutionary dynamics of plant species and are also important considerations for the sustainable management of timber trees. Through direct and indirect genetic analyses, we studied the mating system and the extent of pollen and seed dispersal in an economically important timber species, Entandrophragma cylindricum (Meliaceae). We genotyped adult trees, seeds and saplings from a 400-ha study plot in a natural forest from East Cameroon using eight nuclear microsatellite markers. The species is mainly outcrossed (t = 0.92), but seeds from the same fruit are often pollinated by the same father (correlated paternity, rp = 0.77). An average of 4.76 effective pollen donors (Nep) per seed tree contributes to the pollination. Seed dispersal was as extensive as pollen dispersal, with a mean dispersal distance in the study plot approaching 600 m, and immigration rates from outside the plot to the central part of the plot reaching 40% for both pollen and seeds. Extensive pollen- and seed-mediated gene flow is further supported by the weak, fine-scale spatial genetic structure (Sp statistic = 0.0058), corresponding to historical gene dispersal distances (σg) reaching approximately 1,500 m. Using an original approach, we showed that the relatedness between mating individuals (Fij = 0.06) was higher than expected by chance, given the extent of pollen dispersal distances (expected Fij = 0.02 according to simulations). This remarkable pattern of assortative mating could be a phenomenon of potentially consequential evolutionary and management significance that deserves to be studied in other plant populations. © 2017 John Wiley & Sons Ltd
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Environmental sciences & ecology
Author, co-author :
Monthe, F. K.;  Bioversity International, c/o CIFOR Central Africa Regional Office, Yaoundé, Cameroon, Faculté des Sciences, Service Evolution Biologique et Ecologie, Université Libre de Bruxelles, Bruxelles, Belgium
Hardy, O. J.;  Faculté des Sciences, Service Evolution Biologique et Ecologie, Université Libre de Bruxelles, Bruxelles, Belgium
Doucet, Jean-Louis ;  Université de Liège - ULiège > Ingénierie des biosystèmes (Biose) > Laboratoire de Foresterie des régions trop. et subtropicales
Loo, J.;  Bioversity International, Rome, Italy
Duminil, J.;  Bioversity International, c/o CIFOR Central Africa Regional Office, Yaoundé, Cameroon, Faculté des Sciences, Service Evolution Biologique et Ecologie, Université Libre de Bruxelles, Bruxelles, Belgium, Institut de Recherche pour le Développement, UMR-DIADE, Montpellier, France
Language :
English
Title :
Extensive seed and pollen dispersal and assortative mating in the rain forest tree Entandrophragma cylindricum (Meliaceae) inferred from indirect and direct analyses
Publication date :
2017
Journal title :
Molecular Ecology
ISSN :
0962-1083
eISSN :
1365-294X
Publisher :
Blackwell Publishing Ltd
Volume :
26
Issue :
19
Pages :
5279-5291
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
P-Z1-C00-024
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture

Statistics


Number of views
37 (1 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
25
Scopus citations®
without self-citations
16
OpenCitations
 
22

Bibliography


Similar publications



Contact ORBi