Abstract
Background
Aneuploidy is associated with add or lack of individual chromosomes. The knowledge regarding aneuploidy is still rare in wild and tropical populations. Lippia alba is a tropical polyploid complex naturally formed, with 2x, 3x, 4x, 6x, and aneuploid individuals. The species presents pharmacological and medicinal importance, due to its essential oil compounds, which are related to the ploidal level. Considering the singularity of aneuploids emergence and stability, we proposed to investigate putative cytotypes involved in the aneuploids formation.
Methods and results
Molecular, cytogenetic, reproductive, and chemical approaches were adopted. The results showed that the aneuploids possibly have independent origin considering the genetic, chemical and karyotypical profiles. The chemical composition of aneuploids is related to genetic similarity. The aneuploid origin may involve 2x and 3x cytotypes being possible to rise four scenarios of crosses to explain that.
Conclusions
The results, in general, contribute to the comprehension of the origin of aneuploids and highlight the genetic profile of these accessions as a key element on the understanding of the chemical profile of L. alba accessions.
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Data availability
All generated sequences were deposited in GenBank (Online Resource 3).
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Acknowledgements
We would like to thank J. B. Pinheiro (Esalq-USP) and R. Vieira (Embrapa Cenargen) for providing some of the Lippia alba samples. We also would like to thank to Bioinformatic Laboratory – UFV for helping with data analysis using GENES software.
Funding
This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico-CNPq (314443/2021-5); Fundação de Amparo à Pesquisa do Estado de Minas Gerais-Fapemig (CRA - RED-00053-16) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Capes.
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JL, VC, AR, EM, and LV conceived and designed the experiments. VC and EM carried out the flow cytometry analyses. AR performed the cytogenetic analyses. JL, MM, and AA performed the molecular analyses. RG analyzed the essential oil profile. JL, VC, AR, EM, and LV contributed to the writing of the manuscript. LV revised the manuscript. All authors listed have made a substantial, direct and intellectual contribution to the work, and approved the manuscript.
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Lopes, J.M.L., Campos, V.R., Reis, A.C. et al. Aneuploids and its increment on diversity of Lippia alba polyploid complex: genetic aspects and origin. Mol Biol Rep 49, 7743–7752 (2022). https://doi.org/10.1007/s11033-022-07599-4
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DOI: https://doi.org/10.1007/s11033-022-07599-4