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Characterization of genetic patterns from invasive and naturalized populations of Schizolobium parahyba (Caesalpinioideae - Fabaceae) by Restriction-site associated DNA-sequencing

Grant number: 11/16044-1
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): March 01, 2012
Effective date (End): August 31, 2013
Field of knowledge:Agronomical Sciences - Forestry Resources and Forestry Engineering - Nature Conservation
Principal Investigator:Edson Seizo Mori
Grantee:Gilberto Magalhães Filho
Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil


Schizolobium parahyba is a native tree of Atlantic Rain Forest and is classified as Seasonally Semideciduous Forest invader. Biological invasion is considered major ones cause of biodiversity loss. Invasive populations have different genetic patterns of establishment, as repetitive invasions, cryptic invasoin, introgression and hybridization. In this complex context, population mixtures can be a centerpiece in the successful establishment of invasive populations by favoring local adaptability and reducing inbreeding depression. Through the use of a new technique developed in this research based on Next-Generation Sequencing, Restriction-Site Associated DNA-Sequencing with four simultaneous enzymatic restriction, genetic parameters were detected, as relatedness, population substructure and variability and genetic differentiation measures of invasive and naturalized populations of this species. With nearly 5,000 polymorphic loci was possible to detect processes of population mixture and the particular dynamics of each studied area. There have been cases of exchange of genetic material between invasive and naturalized populations and evidence that human action intensifies the process of population mixture. Analyses of population substructure suggested that human action favored the formation of subpopulations in the study areas. The use of molecular markers with high informativeness proved to be a powerful tool for monitoring of invasive populations. (AU)

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MAGALHÃES FILHO, Gilberto. Caracterização dos padrões genéticos de populações invasoras e naturalizadas de schizolobium parahyba (Caesalpinioideae – Fabaceae) por restriction-site associated dna-sequencing. 2013. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agronômicas. Botucatu Botucatu.

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