Title:	Interphase nuclei, karyotypes and nuclear DNA amounts in five species of Oenocarpus (Arecaceae).
Authors:	OLIVEIRA, N. P. de GESTEIRA, G. de S. OLIVEIRA, M. do S. P. de DAVIDE, L. C.
Affiliation:	NATÁLIA PADILHA DE OLIVEIRA, UNIVERSIDADE FEDERAL DE LAVRAS; GABRIEL DE SIQUEIRA GESTEIRA, UNIVERSIDADE FEDERAL DE LAVRAS; MARIA DO SOCORRO P DE OLIVEIRA, CPATU; LISETE CHAMMA DAVIDE, UNIVERSIDADE FEDERAL DE LAVRAS.
Date Issued:	2024
Citation:	Comparative Cytogenetics, v. 18, p. 59-72, 2024.
Description:	The genus Oenocarpus Martius, 1823 (Arecaceae) includes five species commonly used in Amazonia, especially for their fruits. Little is known about the cytogenetic characteristics and DNA amounts of these species, except for O. bataua (Martius, 1823). This study characterized and compared the types of interphase nuclei, the chromosome sets, and estimated the nuclear DNA amounts of Oenocarpus bacaba (Martius, 1823),O. bataua, O. distichus (Martius, 1823), O. mapora (H. Karsten, 1857) and O. minor (Martius, 1823). Standard cytogenetic analyses and estimates of the nuclear DNA amount by flow cytometry were carried out. These are the first reports of chromosome numbers and DNA amounts, except for O. bataua, as is the description of the chromatin distribution in interphase nuclei and karyotype for all species. All species presented 2n = 36, confirming the previous report for O. bataua. Differences between karyotype formulas and the positioning of secondary constrictions were observed. There were no significant differences for the nuclear DNA amounts among species. The constancy in chromosome number and variations in karyotype formulas suggest the occurrence of chromosome rearrangement as an important mechanism in Oenocarpus speciation.
NAL Thesaurus:	Flow cytometry
Keywords:	C-value Cytogenetic analyses Karyogram Karyotype asymmetry Palms
DOI:	https://doi.org/10.3897/compcytogen.18.117597
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATU)