Please use this identifier to cite or link to this item:
Title: Highly structured genetic diversity of Bixa orellana var. urucurana, the wild ancestor of annatto, in Brazilian Amazonia
Authors: Dequigiovanni, Gabriel
Ramos, Santiago Linorio Ferreyra
Alves-Pereira, Alessandro
Fabri, Eliane Gomes
Doriane, Picanço Rodrigues
Clement, Charles Roland
Gepts, P.
Veasey, Elizabeth Ann
Keywords: Allele
Bixa Orellana
Bixa Orellana Var. Urucurana
Controlled Study
Gene Locus
Gene Structures
Genetic Variability
Microsatellite Marker
Plant Genetics
Species Distribution
Wild Species
Environmental Protection
Genetic Variation
Microsatellite Dna
Plant Extract
Conservation Of Natural Resources
Genetic Variation
Microsatellite Repeats
Plant Extracts
Issue Date: 2018
metadata.dc.publisher.journal: PLoS ONE
metadata.dc.relation.ispartof: Volume 13, Número 6
Abstract: 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 Rondônia, Pará and Roraima. A total of 194 alleles was observed, with an average of 12.1 alleles per locus. Higher levels of expected (HE) than observed (HO) 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 Rondônia, 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. This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.
metadata.dc.identifier.doi: 10.1371/journal.pone.0198593
Appears in Collections:Artigos

Files in This Item:
File Description SizeFormat 
artigo-inpa.pdf7,18 MBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons