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

Pádua, Joelma Aparecida Rabelo de; Rocha, Lucas Fernandes; Brandão, Murilo Malveira; Vieira, Fábio de Almeida; Carvalho, Dulcinéia de

doi:10.1007/s10722-021-01144-1

Cited by 10 publications

(2 citation statements)

References 44 publications

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“…In Brazil, the legislation that guides forest management does not clearly describe the importance of genetic evaluation within natural populations; therefore, information that seeks to associate genetic data with the formulation of sustainable management plans is unfortunately not mentioned [ 61 ]. Although C .…”

Section: Discussionmentioning

confidence: 99%

Population genomics of the neotropical palm Copernicia prunifera (Miller) H. E. Moore: Implications for conservation

et al. 2022

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Copernicia prunifera (Miller) H. E. Moore is a palm tree native to Brazil. The products obtained from its leaf extracts are a source of income for local families and the agroindustry. Owing to the reduction of natural habitats and the absence of a sustainable management plan, the maintenance of the natural populations of this palm tree has been compromised. Therefore, this study aimed to evaluate the diversity and genetic structure of 14 C. prunifera populations using single nucleotide polymorphisms (SNPs) identified through genotyping-by-sequencing (GBS) to provide information that contributes to the conservation of this species. A total of 1,013 SNP markers were identified, of which 84 loci showed outlier behavior and may reflect responses to natural selection. Overall, the level of genomic diversity was compatible with the biological aspects of this species. The inbreeding coefficient (f) was negative for all populations, indicating excess heterozygotes. Most genetic variations occurred within populations (77.26%), and a positive correlation existed between genetic and geographic distances. The population structure evaluated through discriminant analysis of principal components (DAPC) revealed low genetic differentiation between populations. The results highlight the need for efforts to conserve C. prunifera as well as its distribution range to preserve its global genetic diversity and evolutionary potential.

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Section: Discussionmentioning

confidence: 99%

Population genomics of the neotropical palm Copernicia prunifera (Miller) H. E. Moore: Implications for conservation

et al. 2022

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“…We found a high percentage of polymorphic loci for the whole population (99.09%), which demonstrates that the ISSR molecular markers used in this study are effective for estimating genetic diversity. ISSR markers have been used successfully in recent studies of genetic diversity (Pádua et al 2021;Torres-Silva et al 2021). Based on AMOVA, greater genetic variation occurred within than among populations.…”

Section: Discussionmentioning

confidence: 99%

Overexploitation and anthropogenic disturbances threaten the genetic diversity of an economically important neotropical palm

et al. 2021

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The Caatinga biome is one of the largest areas of the South American seasonally dry tropical forest that has been severely affected by unsustainable natural resource use. Furthermore, the biome has been identified as an ecologically sensitive region that is particularly susceptible to climate changes. One of the most economically important native palm tree for traditional communities from the semi-arid Caatinga is the carnauba palm, Copernicia prunifera, which offers diverse natural resources, yet its natural populations suffer intense exploitation. To inform conservation and population management strategies, we sought to determine if remaining natural populations of this species in an intensively exploited area in Northeast Brazil displayed evidence of negative genetic impacts because of exploitation and how this might interact with expected environmental changes. Mantel's test revealed a positive and significant correlation between geographic and genetic distances, suggesting natural populations are structured by isolation by distance, while also experiencing genetic barriers as identified through Monmonier's algorithm. The studied populations showed evidence of genetic bottlenecks, while future climate scenarios suggest that potentially suitable habitats for C. prunifera within its native range will be reduced. Significant genetic differentiation among populations resulted in three distinct genetic groups which are consistent with ecological niche modelling. In addition to the need for in situ conservation of C. prunifera populations to minimize the loss of important alleles, the creation of germplasm banks for ex situ conservation and strategies for developing planted productive forests are urgently required to maintain natural populations and ensure sustainability resources for traditional communities.

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Short-term increase in clonal propagules following disturbance in a natural population of Eremanthus erythropappus

Rocha,

Konzen,

de Carvalho

2023

Genet Resour Crop Evol

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

Cited by 10 publications

References 44 publications

Population genomics of the neotropical palm Copernicia prunifera (Miller) H. E. Moore: Implications for conservation

Population genomics of the neotropical palm Copernicia prunifera (Miller) H. E. Moore: Implications for conservation

Overexploitation and anthropogenic disturbances threaten the genetic diversity of an economically important neotropical palm

Short-term increase in clonal propagules following disturbance in a natural population of Eremanthus erythropappus

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