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Population genomics and phenotypic characterization to elucidate aspects of the origin, domestication and dispersal of annatto (Bixa Orellana) and maize (Zea mays) in the lowlands of South America

Grant number: 15/26837-0
Support type:Regular Research Grants
Duration: April 01, 2016 - November 30, 2018
Field of knowledge:Biological Sciences - Genetics - Plant Genetics
Principal Investigator:Elizabeth Ann Veasey
Grantee:Elizabeth Ann Veasey
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Assoc. researchers:Alessandro Alves Pereira ; Charles Roland Clement ; Doriane Picanço Rodrigues ; Eliane Gomes Fabri ; Fabio de Olivera Freitas ; Maria Imaculada Zucchi ; Natália Carolina de Almeida Silva ; Rafael Vidal ; Roberto Fritsche Neto ; Santiago Linorio Ferreyra Ramos


The processes of plant domestication and dispersal occurred over the past 12,000 years, involving strong selective pressures caused both by humans and by natural selection itself, leading to genetic modifications to better adapt selected populations to the ecological and agronomic conditions, and cultural aspects of human populations that cultivated them. By using tools of molecular genetics and population genomics, as well as phenotypic characterization, this project aims to: a) determine the center of domestication and understand the process of dispersal of annatto in Brazil, and also look at the reproductive system of its wild populations; b) determine the dispersal process of maize in the lowlands of South America, and identify races of maize in Brazil, in order to update the information on maize diversity in in situ-on farm conservation. To this end, molecular markers such as microsatellites, SNPs and sequences of chloroplast DNA regions will be used. Phenotypic evaluations will also be conducted in maize for the identification of races of maize currently present in Brazil. (AU)

Scientific publications
(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)
DEQUIGIOVANNI, GABRIEL; FERREYRA RAMOS, SANTIAGO LINORIO; ALVES-PEREIRA, ALESSANDRO; FABRI, ELIANE GOMES; PICANCO-RODRIGUES, DORIANE; CLEMENT, CHARLES ROLAND; GEPTS, PAUL; VEASEY, ELIZABETH ANN. Highly structured genetic diversity of Bixa orellana var. urucurana, the wild ancestor of annatto, in Brazilian Amazonia. PLoS One, v. 13, n. 6 JUN 6 2018. Web of Science Citations: 2.
DEQUIGIOVANNI, GABRIEL; FERREYRA RAMOS, SANTIAGO LINORIO; GOMES LOPES, MARIA TERESA; CLEMENT, CHARLES ROLAND; RODRIGUES, DORIANE PICANCO; FABRI, ELIANE GOMES; ZUCCHI, MARIA IMACULADA; VEASEY, ELIZABETH ANN. New microsatellite loci for annatto (Bixa orellana), a source of natural dyes from Brazilian Amazonia. Crop Breeding and Applied Biotechnology, v. 18, n. 1, p. 116-122, JAN-MAR 2018. Web of Science Citations: 2.

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