Karyomorphology and karyotype asymmetry in the South American Caesalpinia species (Leguminosae and Caesalpinioideae)

Rodrigues, Polliana Silva; Souza, Margarete Magalhães; Corrêa, Ronan Xavier

doi:10.4238/2014.october.20.4

Cited by 7 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…accessions (Poaceae) (Paszko 2006) and six Coffea L. species (Rubiaceae) (Pierozzi et al 2012). As demonstrated in the analysis of 217 species representing different Liliaceae genera (Peruzzi et al 2009), AI is perceived as a suitable parameter for suprageneric evolutionary studies (Rodrigues 2014). Ying et al (2014) studied the chromosome numbers and karyomorphology of 32 accessions of Anaphalis DC.…”

Section: Discussionmentioning

confidence: 99%

Karyomorphological study of five Turkish endemicRhaponticoidesVaill. (Asteraceae, Cardueae) species

et al. 2016

View full text Add to dashboard Cite

In this paper, we aimed to determine the chromosomal features of Turkish endemic Rhaponticoides species. The chromosome numbers and karyomorphology of five species were examined. The chromosomal counts confirmed the previous reports of 2n = 30 given for Rhaponticoides species growing in different countries. Although R. iconiensis had a karyotype formula of 28m + 2sm, the remaining four species all had 26m + 4sm. Rhaponticoides aytachii and R. hierroi were especially similar in asymmetry indices. Rhaponticoides iconiensis and R. phytiae had satellites in the fourth and second chromosome pairs, respectively. Having the most symmetrical chromosomes, R. amasiensis displayed an important relationship with R. iconiensis and R. phytiae in terms of total chromosome length (TCL). If we make an overall assessment in terms of chromosomal asymmetry, chromosomes indices continues in the low range for each species and this low asymmetry indeces indicate that the species have symmetric chromosomes as karyomorphology. In conclusion, this is the first report which describes the karyotypes and chromosomal asymmetry indices of Turkish endemic Rhaponticoides species.

show abstract

Section: Discussionmentioning

confidence: 99%

Karyomorphological study of five Turkish endemicRhaponticoidesVaill. (Asteraceae, Cardueae) species

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Among the species analyzed in the present study, the only representative of the Erythrostemon genus was E. calycina , which had the least amount of 2C DNA (1.54 pg) and which was also the only species to present five pairs of chromosomes with the presence of 45S rDNA sites; these were unique characteristics of this genus. In previous analyses, similarities in chromosome morphology have been reported for the six species studied herein, and karyotype formulas have shown the predominance of metacentric chromosomes [ 47 ].…”

Section: Discussionmentioning

confidence: 61%

Karyotype diversity and 2C DNA content in species of the Caesalpinia group

et al. 2018

View full text Add to dashboard Cite

BackgroundThe Leguminosae family is the third-largest family of angiosperms, and Caesalpinioideae is its second-largest subfamily. A great number of species (approximately 205) are found in the Caesalpinia group within this subfamily; together with these species’ phenotypic plasticity and the similarities in their morphological descriptors, make this a complex group for taxonomic and phylogenetic studies. The objective of the present work was to evaluate the karyotypic diversity and the 2C DNA content variation in 10 species of the Caesalpinia group, representing six genera: Paubrasilia, Caesalpinia, Cenostigma, Poincianella, Erythrostemon and Libidibia. The GC-rich heterochromatin and 45S rDNA sites (which are used as chromosome markers) were located to evaluate the karyotype diversity in the clade. The variation in the 2C DNA content was determined through flow cytometry.ResultsThe fluorochrome banding indicated that the chromomycin A3+/4′,6-diamidino-2-phenylindole− blocks were exclusively in the terminal regions of the chromosomes, coinciding with 45S rDNA sites in all analyzed species. Physical mapping of the species (through fluorescence in situ hybridization) revealed variation in the size of the hybridization signals and in the number and distribution of the 45S rDNA sites. All hybridization sites were in the terminal regions of the chromosomes. In addition, all species had a hybridization site in the fourth chromosome pair. The 2C DNA content ranged from 1.54 pg in Erythrostemon calycina to 2.82 pg in the Paubrasilia echinata large-leaf variant. The Pa. echinata small-leaf variant was isolated from the other leaf variants through Scoot-Knott clustering.ConclusionsThe chromosome diversity and the variation in the 2C DNA content reinforce that the actual taxonomy and clustering of the analyzed taxa requires more genera that were previously proposed. This fact indicates that taxonomy, phylogeny and cytoevolutionary inference related to the complex Caesalpinia group have to be done through integrative evaluation.

show abstract

How diverse is heterochromatin in the Caesalpinia group? Cytogenomic characterization of Erythrostemon hughesii Gagnon & G.P. Lewis (Leguminosae: Caesalpinioideae)

Mata-Sucre

Sader

Van-Lume

et al. 2020

Planta

View full text Add to dashboard Cite

Karyomorphology and karyotype asymmetry in the South American Caesalpinia species (Leguminosae and Caesalpinioideae)

Cited by 7 publications

References 33 publications

Karyomorphological study of five Turkish endemicRhaponticoidesVaill. (Asteraceae, Cardueae) species

Karyomorphological study of five Turkish endemicRhaponticoidesVaill. (Asteraceae, Cardueae) species

Karyotype diversity and 2C DNA content in species of the Caesalpinia group

How diverse is heterochromatin in the Caesalpinia group? Cytogenomic characterization of Erythrostemon hughesii Gagnon & G.P. Lewis (Leguminosae: Caesalpinioideae)

Contact Info

Product

Resources

About