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Contemporary gene flow, mating system, and spatial genetic structure in a jequitibá-rosa (Cariniana legalis Mart. Kuntze) fragmented population by microsatellite markers

Grant number: 10/12354-3
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): February 01, 2011
Effective date (End): February 28, 2014
Field of knowledge:Biological Sciences - Genetics
Principal Investigator:Roland Vencovsky
Grantee:Evandro Vagner Tambarussi
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

Jequitibá-rosa (Cariniana legalis Mart. O. Kuntze), the symbol tree of São Paulo state, is one of the largest trees of the Atlantic Forest. The species is endemic to Brazil and occur in low population density (less than one tree/ha). However, the Atlantic Forest was intensively fragmented in the last centuries, and today remains only between 11 to 16% of the original forest. Forest fragmentation isolate and to decrease the size of the population. Consequently, affects the gene flow among populations and can increase the selfing rate, correlated matings, intra-population spatial, genetic structure and the relatedness in descend generations. Due to this, studies of the gene flow by pollen and seeds, mating system and spatial genetic structure are very important to understand the impacts of forest fragmentation on populations and to design strategies for in situ and ex situ conservation of the species. Microsatellite markers are very suitable for these studies due their very high polymorphism, in terms of number of alleles. Within this contest, in this study, we will investigate the contemporary pollen and seed flow, mating system and spatial genetic structure of a small fragmented population of C. legalis, located in the Estação Ecológica de Ibicatú-SP, Brazil. For to do this, all adult trees and about 300 seedlings will be mapped, measured (diameter and height), sampled and genotyped for eight microsatellite loci. Six-hundred open-pollinated seeds from 12 seed-trees will also be sampled. This study will produce valuable information's for management of fragmented populations of the species, contributing for breeding, conservation and reforestation plans.

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TAMBARUSSI, EVANDRO VAGNER; BOSHIER, DAVID; VENCOVSKY, ROLAND; MENEZES FREITAS, MIGUEL LUIZ; SEBBENN, ALEXANDRE MAGNO. Inbreeding depression from selfing and mating between relatives in the Neotropical tree Cariniana legalis Mart. Kuntze. CONSERVATION GENETICS, v. 18, n. 1, p. 225-234, FEB 2017. Web of Science Citations: 14.
TAMBARUSSI, E. V.; BOSHIER, D. H.; VENCOVSKY, R.; FREITAS, M. L. M.; DI-DIO, O. J.; SEBBENN, A. M. Several small: how inbreeding affects conservation of Cariniana legalis Mart. Kuntze (Lecythidaceae) the Brazilian Atlantic Forest's largest tree. INTERNATIONAL FORESTRY REVIEW, v. 18, n. 4, p. 502-510, 2016. Web of Science Citations: 10.
TAMBARUSSI, EVANDRO V.; BOSHIER, DAVID; VENCOVSKY, ROLAND; FREITAS, MIGUEL L. M.; SEBBENN, ALEXANDRE M. Paternity analysis reveals significant isolation and near neighbor pollen dispersal in small Cariniana legalis Mart. Kuntze populations in the Brazilian Atlantic Forest. ECOLOGY AND EVOLUTION, v. 5, n. 23, p. 5588-5600, DEC 2015. Web of Science Citations: 17.
FORTI, G.; TAMBARUSSI, E. V.; KAGEYAMA, P. Y.; MORENO, M. A.; FERRAZ, E. M.; IBANES, B.; MORI, G. M.; VENCOVSKY, R.; SEBBENN, A. M. Low genetic diversity and intrapopulation spatial genetic structure of the Atlantic Forest tree, Esenbeckia leiocarpa Engl. (Rutaceae). ANNALS OF FOREST RESEARCH, v. 57, n. 2, p. 165-174, 2014. Web of Science Citations: 7.
TAMBARUSSI, EVANDRO VAGNER; SEBBENN, ALEXANDRE MAGNO; MORENO, MARIA ANDREIA; FERRAZ, ELZA MARTINS; KAGEYAMA, PAULO YOSHIO; VENCOVSKY, ROLAND. MICROSATELLITE MARKERS FOR CARINIANA LEGALIS (LECYTHIDACEAE) AND THEIR TRANSFERABILITY TO C. ESTRELLENSIS. APPLICATIONS IN PLANT SCIENCES, v. 1, n. 6 JUN 2013. Web of Science Citations: 8.
TAMBARUSSI, E. V.; VENCOVSKY, R.; FREITAS, M. L. M.; SEBBENN, A. M. Mendelian inheritance, genetic linkage, and genotypic disequilibrium at nine microsatellite loci of Cariniana legalis (Mart.) O. Kuntze. Genetics and Molecular Research, v. 12, n. 4, p. 5442-5457, 2013. Web of Science Citations: 8.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
TAMBARUSSI, Evandro Vagner. Contemporary gene flow, mating system, and spatial genetic structure in a Jequitibá-rosa (Cariniana legalis Mart. Kuntze) fragmented population by microsatellite markers. 2014. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz Piracicaba.

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