Genetic structure of two Acrocomia ecotypes (Arecaceae) across Brazilian savannas and seasonally dry forests

Lima, Natácia Evangelista de; Meerow, Alan W.; Manfrin, Maura Helena

doi:10.1007/s11295-020-01446-y

Cited by 9 publications

(13 citation statements)

References 51 publications

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“…Higher values of genetic diversity were also found in A. totai at the population level. Our results are in line with previous studies conducted by Lima et al (2020), which also identified higher levels of genetic diversity in A. totai . Likewise, Lanes et al (2015) and Mengsitu et al (2016) reported a higher number of alleles per locus, a greater number of specific alleles and a higher percentage of polymorphism in populations from Mato Grosso do Sul when compared to populations from São Paulo and Minas Gerais, considering that populations from Mato Grosso do Sul were attributed by the authors to the species A. aculeata .…”

Section: Inter and Intraspecific Genetic Diversitysupporting

confidence: 93%

“…Therefore, we are reporting unprecedented evidence of the occurrence of natural hybrids between species of the genus Acrocomia through molecular data. A previous study, based on the SSR marker, verified connectivity and admixture in a population of A. totai located geographically close to the population of A. aculeata (Lima et al, 2020).…”

Section: Interspecific Hybridizationmentioning

confidence: 75%

“…A single study was reported on the genetic diversity ofA. totai through molecular markers with samples only from Brazil (Lima et al, 2020). Thus, our study presents results on the genetic diversity of A. aculeata and A. totai based on population data from a wide gradient of geographical distribution of both species, including samples of A. totai from another country of occurrence.…”

Section: Inter and Intraspecific Genetic Diversitymentioning

confidence: 94%

“…In the present study, microsatellite markers of expressed regions (EST-SSR) and genomic regions (gSSR) were adopted to elucidate the taxonomic relationship between the most economically important Acrocomia species (A. aculeata and A. totai ) and to identify possible interspecific hybrids. In the genus Acrocomia, several genetic studies performed with microsatellite markers were conducted with at most 8 gSSR loci developed for A. aculeata by Nucci et al (2008), as in Lanes et al (2015), Lanes et al (2016), Mengistu et al (2016), Neiva et al (2016), Araújo et al (2017), Coelho et al, (2018) and Lima et al (2020). Thus, this work represents the first study using both EST-SSR and gSSR markers in Acrocomia.…”

Section: Genetic Variability In Genomic Gssrs and Est-ssrsmentioning

confidence: 99%

“…To date, only one study addressing the genetic diversity of A. aculeata andA. totai has been reported (Lima et al, 2020). Thus, in the present study we used a population genetic approach for elucidate the boundaries between A. aculeata and A. totai and compare genetic variation within and between populations and species using genomic Simple Sequence Repeats (SSR) and Expressed Sequence Tags (EST) SSR.…”

Section: Introductionmentioning

confidence: 99%

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Species delimitation and hybrid identification of Acrocomia aculeata and A. totai by genetic population approach

Diaz

Zucchi

Alves‐Pereira

et al. 2020

Preprint

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To the Neotropical genus Acrocomia (Arecaceae) is attributed eight species with a wide distribution in America. A. aculeata and A. totai are the most important species because of their high economic potential for oil production. However, there is no consensus in their classification as different taxons and their distinctiveness is particularly challenging due to morphological similarities with large plasticity of the traits. In addition, there is doubt about the occurrence of interspecific hybrids between both species. In this study, we applied a genetic population approach to assessing the genetic boundaries, diversity and to identify interspecific hybrids of A. aculeata and A. totai. Thirteen loci of simple sequence repeat (SSR) were employed to analyze twelve populations representing a wide distribution of species, from Minas Gerais, Brazil to Formosa, Argentina. Based on the Bayesian analysis (STRUCTURE and NewHybrids) and Discriminant Analysis of Principal Components (DAPC), our study supports the recognition of A. aculeata and A. totai as two species and the estimates of genetic parameters revealed more genetic diversity in A. totai (H E =0.551) than in A. aculeata (H E =0.466). We obtained evidence of hybridization between the species and that admixed individuals were assigned as F2 hybrids. In conclusion, this study showed the usefulness of microsatellite markers to elucidate the genetic boundaries of A. aculeata and A. totai, supporting their classification as different species and increase our knowledge about genetic diversity at the level of populations and species. The results are essentials to establish strategies for the adequate management, conservation, and domestication of both species.

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Section: Inter and Intraspecific Genetic Diversitysupporting

confidence: 93%

Section: Interspecific Hybridizationmentioning

confidence: 75%

Section: Inter and Intraspecific Genetic Diversitymentioning

confidence: 94%