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Melo NF, Guerra M. The karyotype of Adenia and the origin of the base number x = 12 in Passifloroideae (Passifloraceae). An Acad Bras Cienc. 2021;93:e20201852doi: 10.1590/0001-3765202120201852.
Melo, N. F., & Guerra, M. (2021). The karyotype of Adenia and the origin of the base number x = 12 in Passifloroideae (Passifloraceae). Anais da Academia Brasileira de Ciencias, 93e20201852. https://doi.org/10.1590/0001-3765202120201852
Melo, Natoniel Franklin DE, and Guerra, Marcelo. "The karyotype of Adenia and the origin of the base number x = 12 in Passifloroideae (Passifloraceae)." Anais da Academia Brasileira de Ciencias vol. 93 (2021): e20201852. doi: https://doi.org/10.1590/0001-3765202120201852
Melo NF, Guerra M. The karyotype of Adenia and the origin of the base number x = 12 in Passifloroideae (Passifloraceae). An Acad Bras Cienc. 2021 Sep 29;93:e20201852. doi: 10.1590/0001-3765202120201852. eCollection 2021. PMID: 34614089.
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An Acad Bras Cienc. 2021 Sep 29;93:e20201852. doi: 10.1590/0001-3765202120201852. eCollection 2021.

The karyotype of Adenia and the origin of the base number x = 12 in Passifloroideae (Passifloraceae).

Anais da Academia Brasileira de Ciencias

Natoniel Franklin DE Melo, Marcelo Guerra

Affiliations

  1. Embrapa Semiárido, Laboratório de Biotecnologia, BR-428, km 152, Caixa Postal 23, 56302-970 Petrolina, PE, Brazil.
  2. Universidade Federal de Pernambuco, CB, Departamento de Botânica, Rua Prof. Nelson Chaves, s/n, Cidade Universitária, 50670-420 Recife, PE, Brazil.

PMID: 34614089 DOI: 10.1590/0001-3765202120201852

Abstract

Adenia is an Old World genus of Passifloroideae closely related to Passiflora. The two genera comprise the large majority of Passifloroideae species, although most studies are concentrated on Passiflora. Cytological analyses reveal that changes in chromosome numbers played an important role in the evolution of Passiflora, whereas in the remaining genera little is known, hindering the identification of the base number of the family. Here we analyzed the chromosome number and the 35S rDNA sites of three species of Adenia and reevaluated the base number (x) of the subfamily Passifloroideae and the family Passifloraceae, including chromosome data for Turneroideae and Malesherbioideae. The chromosome number of Adenia species seemed to be stable with 2n = 24 or 48 and one or two pairs of rDNA sites, very similar to Passiflora subgenus Astrophea, suggesting a common ancestral karyotype with x = 12. Differently, Turneroideae and Malesherbioideae present x = 7. A whole genomic duplication detected after the separation of Passifloroideae and Malesherbioideae suggests that the base number of Passifloraceae most probably was x = 7, which by dysploidy and polyploidy generated x = 12 for the subfamily Passifloroideae.

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