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

Highly structured genetic diversity of Bixa orellana var. urucurana, the wild ancestor of annatto, in Brazilian Amazonia

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Dequigiovanni, Gabriel [1] ; Ferreyra Ramos, Santiago Linorio [2] ; Alves-Pereira, Alessandro [1] ; Fabri, Eliane Gomes [3] ; Picanco-Rodrigues, Doriane [4] ; Clement, Charles Roland [5] ; Gepts, Paul [6] ; Veasey, Elizabeth Ann [1]
Total Authors: 8
[1] Univ Sao Paulo, ESALQ, Dept Genet, Piracicaba, SP - Brazil
[2] Univ Fed Amazonas, Inst Ciencias Exatas & Tecnol Itacoatiara, Itacoatiara, Amazonas - Brazil
[3] Inst Agron Campinas, Ctr Hort, Campinas, SP - Brazil
[4] Univ Fed Amazonas ICB UFAM, Inst Ciencias Biol, Manaus, Amazonas - Brazil
[5] INPA, Manaus, Amazonas - Brazil
[6] Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 - USA
Total Affiliations: 6
Document type: Journal article
Source: PLoS One; v. 13, n. 6 JUN 6 2018.
Web of Science Citations: 2

Annatto (Bixa orellana L.) is a tropical American crop, commercially valuable due to its application in the food and cosmetics industries as a natural dye. The wild ancestor of cultivated annatto is B. orellana var. urucurana. Although never cultivated, this variety occurs in open forests and anthropogenic landscapes, and is always associated with riparian environments. In this study, we evaluated the genetic diversity and structure of B. orellana var. urucurana populations in Brazilian Amazonia using 16 microsatellite loci. We used Ecological Niche Modeling (ENM) to characterize the potential geographical range of this variety in northern South America. We analyzed 170 samples from 10 municipalities in the states of Rondonia, Para and Roraima. A total of 194 alleles was observed, with an average of 12.1 alleles per locus. Higher levels of expected (H-E) than observed (H-O) heterozygosities were found for all populations. Bayesian analysis, Neighbor-Joining dendrograms and PCAs suggest the existence of three strongly structured groups of populations. A strong and positive correlation between genetic and geographic distances was found, suggesting that genetic differentiation might be caused by geographic isolation. From species distribution modelling, we detected that South Rondonia, Madre di Dios River basin, Llanos de Mojos, Llanos de Orinoco and eastern Ecuador are highly suitable areas for wild annatto to occur, providing additional targets for future exploration and conservation. Climatic adaptation analyses revealed strong differentiation among populations, suggesting that precipitation plays a key role in wild annatto's current and potential distribution patterns. (AU)

FAPESP's process: 15/26837-0 - 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
Grantee:Elizabeth Ann Veasey
Support Opportunities: Regular Research Grants
FAPESP's process: 12/08307-5 - Genetic structure and mating system of local varieties and wild populations of annatto (Bixa orellana L.) in Brazilian Amazonia and Central Brazil using microsatellite markers
Grantee:Elizabeth Ann Veasey
Support Opportunities: Regular Research Grants
FAPESP's process: 16/05912-6 - Genetic diversity and phylogeography of annatto (Bixa orellana L.) from Brazilian Amazon
Grantee:Gabriel Dequigiovanni
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 13/08884-5 - Genetic structure and mating system of annatto (Bixa orellana L.) populations from the Brazilian Amazon and Central Brazil using microsatellite markers
Grantee:Gabriel Dequigiovanni
Support Opportunities: Scholarships in Brazil - Doctorate