Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Low genetic diversity and intrapopulation spatial genetic structure of the Atlantic Forest tree, Esenbeckia leiocarpa Engl. (Rutaceae)

Forti, G. [1] ; Tambarussi, E. V. [2] ; Kageyama, P. Y. [2] ; Moreno, M. A. [2] ; Ferraz, E. M. [2] ; Ibanes, B. [2] ; Mori, G. M. [3, 4] ; Vencovsky, R. [2] ; Sebbenn, A. M. [5]
Total Authors: 9
[1] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Univ Metodista Piracicaba Unimep, BR-13418900 Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Sao Paulo - Brazil
[3] Univ Estadual Campinas, UNICAMP, Ctr Biol Mol & Engn Genet, BR-13083875 Campinas, SP - Brazil
[4] Agencia Paulista Tecnol Agronegocios, Polo Reg Ctr Sul, BR-13400970 Piracicaba, SP - Brazil
[5] Inst Florestal Sao Paulo, BR-01059970 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: ANNALS OF FOREST RESEARCH; v. 57, n. 2, p. 165-174, 2014.
Web of Science Citations: 7

Studies on population genetics are the key to designing effective in situ management plans for tree species, in particular, those subjected to pressure from anthropogenic processes, such as forest fragmentation and logging. To investigate genetic diversity, inbreeding and intrapopulation spatial genetic structure (SGS) in a fragmented population of the insect-pollinated tropical tree, Esenbeckia leiocarpa, we developed specific microsatellite markers for this species and mapped and sampled 100 individuals in a forest plot. Two issues were addressed in particular: (i) the level of genetic diversity, inbreeding and effective population size, (ii) whether intrapopulation spatial genetic structure exists. Among the 14 loci developed, we only used the three that presented polymorphism to estimate the genetic parameters. Genetic diversity was low, whereby the average number of alleles per locus (A) was 3.3 and observed (H-0) and expected heterozygosities (H were 0.336 and 0.298, respectively. The average fixation index was significantly higher than zero (F = 0.112), suggesting inbreeding. Significant SGS was found up to 7 m and between 31 to 38 m, indicating that trees growing within these distances may be related. Estimates of the effective population size indicated that the 100 sampled trees correspond to 14 individuals that are neither related nor inbred. Our results suggest that the microsatellite markers developed in this study are suitable for studies on genetic diversity and structure, mating systems, gene flow and SGS in this species. (AU)

FAPESP's process: 12/20790-3 - Development and characterization of microsatellite loci from Guarantã (Esenbeckia leiocarpa Engl.) aimed genetic and ecological studies
Grantee:Giullia Forti
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 10/12354-3 - Contemporary gene flow, mating system, and spatial genetic structure in a jequitibá-rosa (Cariniana legalis Mart. Kuntze) fragmented population by microsatellite markers.
Grantee:Evandro Vagner Tambarussi
Support Opportunities: Scholarships in Brazil - Doctorate