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Tree Genetics & Genomes

, 14:73 | Cite as

Population genetics of Cedrela fissilis (Meliaceae) from an ecotone in central Brazil

  • J. M. Diaz-Soto
  • A. Huamán-Mera
  • L. O. Oliveira
Original Article
Part of the following topical collections:
  1. Population structure

Abstract

Cedrela fissilis is an endangered timber species associated with seasonal forests throughout South America. We investigated a population of C. fissilis (PAN) located toward central Brazil to uncover insights on how an ecotone may have shaped the evolutionary history of this species at the local scale. PAN consisted of 18 mother trees and their 283 offspring (18 families), which were genotyped with ten microsatellite loci. We supplemented our dataset with equivalent microsatellite data from 175 specimens representing the east and west lineages of C. fissilis. An array of complementary methods assessed PAN for genetic diversity, population structure, and mating system. In PAN, the gene pool of the east lineage combined with a third (previously unidentified) lineage to form an admixture population. PAN is under inbreeding (Ho = 0.80 and 0.74, uHe = 0.85 and 0.82, Ap = 1.1 and 7.1, F = 0.06 and 0.10, for mother trees and offspring, respectively). Mother trees were predominantly outcrossing (tm = 0.95), with some selfing (1 − tm = 0.05), and crossing between related individuals (tmts = 0.07); they received pollen from few donors (Nep = 9). Restricted gene flow within PAN gave rise to a strong population structure, which split the 18 families into six groups. Some mother trees were reproductively isolated. Conservation perspectives are discussed.

Keywords

Microsatellites Phylogeography Population structure Seasonal forests South America 

Notes

Funding information

This work was supported by The Minas Gerais State Foundation of Research Aid – FAPEMIG (grant numbers PPM 00561-15 and APQ 03504-15) and by The National Council of Scientific and Technological Development – CNPq (fellowship number PQ 305827/2015-4) to LOO. JMDS received financial support from the Universidad de Sucre for his doctoral training. IBAMA and IEF-MG provided collecting permits.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Data archiving statement

Microsatellite genotype data are available in Supplementary Table S1.

Supplementary material

11295_2018_1287_MOESM1_ESM.xls (84 kb)
Table S1 Genotypic data (diploid individuals) for the population PAN (mother trees and offspring) of Cedrela fissilis obtained with ten microsatellite loci (XLS 84 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Departamento de Bioquímica e Biologia MolecularUniversidade Federal de ViçosaViçosaBrazil
  2. 2.Departamento de Biología y QuímicaUniversidad de SucreSincelejoColombia

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