Title: priority areas for genetic conservation of Eremanthus erythropappus (DC.) MacLeish in Brazil

Eremanthus erythropappus (DC.) MacLeish, commonly known as candeia, is a threatened tree species that occurs in Seasonal Semideciduous Forests in Brazil. The tree is valued for the durability of its wood and essential oil production, from which the active agent (alpha-bisabolol) is used in pharmaceu...

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Bibliographic Details
Published in:Genetic resources and crop evolution 2021-08, Vol.68 (6), p.2483-2494
Main Authors: de Pádua, Joelma Aparecida Rabelo, Rocha, Lucas Fernandes, Brandão, Murilo Malveira, de Almeida Vieira, Fábio, de Carvalho, Dulcinéia
Format: Article
Language:English
Subjects:
Agriculture
Bayesian analysis
Biomedical and Life Sciences
Clustering
Conservation
Conservation genetics
Eremanthus erythropappus
Essential oils
Gene flow
Genetic diversity
Genetic variability
Genetics
Life Sciences
Natural populations
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Plant species
Plant Systematics/Taxonomy/Biogeography
Population genetics
Populations
Research Article
Threatened species
Wildlife conservation
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Summary:Eremanthus erythropappus (DC.) MacLeish, commonly known as candeia, is a threatened tree species that occurs in Seasonal Semideciduous Forests in Brazil. The tree is valued for the durability of its wood and essential oil production, from which the active agent (alpha-bisabolol) is used in pharmaceutical and cosmetic industries. Due to its high economic value, E. erythropappus has been exploited for several decades. Natural populations have been reduced, with the subsequent ecological and genetic negative impacts. We aimed to use a landscape genetics approach to identify if natural features influence the genetic diversity of E. erythropappus. In order to assess the genetic variability and provide information for the conservation of the species, genetics analyses were carried out for 200 individuals from ten natural populations of E. erythropappus. Nine ISSR primers produced 72 bands, of which 57 (79%) were polymorphic. Genetic diversity ( H E ) was 0.30 and gene flow was 1.4 migrants per population. The Bayesian clustering model indicated the occurrence of four genetically distinct populations (K = 4). Results of AMOVA showed high genetic differentiation between populations (30.8 %) and there was positive correlation between genetic and geographic distances (r = 0.632, P = 0.001). Based on a Mantel correlation and the genetic discontinuity among populations, we recommend the implementation of four operational units to support the conservation of this species.
ISSN:0925-9864
1573-5109
DOI:10.1007/s10722-021-01144-1