↓ Skip to main content

Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)

Overview of attention for article published in Genetics and Molecular Biology, March 2018
Altmetric Badge

Mentioned by

twitter
3 tweeters

Citations

dimensions_citation
2 Dimensions

Readers on

mendeley
11 Mendeley
You are seeing a free-to-access but limited selection of the activity Altmetric has collected about this research output. Click here to find out more.
Title
Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)
Published in
Genetics and Molecular Biology, March 2018
DOI 10.1590/1678-4685-gmb-2017-0077
Pubmed ID
Authors

Paula Burchardt, Tatiana T. Souza-Chies, Olivier Chauveau, Sidia M. Callegari-Jacques, Lauís Brisolara-Corrêa, Camila Dellanhese Inácio, Lilian Eggers, Sonja Siljak-Yakovlev, José Marcello Salabert de Campos, Eliane Kaltchuk-Santos

Abstract

Sisyrinchium is the largest genus of Iridaceae in the Americas and has the greatest amount of cytological data available. This study aimed at investigating how genomes evolved in this genus. Chromosome number, genome size and altitude from species of sect. Viperella were analyzed in a phylogenetic context. Meiotic and pollen analyses were performed to assess reproductive success of natural populations, especially from those polyploid taxa. Character optimizations revealed that the common ancestor of sect. Viperella was probably diploid (2n = 2x =18) with two subsequent polyplodization events. Total DNA content (2C) varied considerably across the phylogeny with larger genomes detected mainly in polyploid species. Altitude also varied across the phylogeny, however no significant relationship was found between DNA content changes and altitude in our data set. All taxa presented regular meiosis and pollen viability (> 87%), except for S. sp. nov. aff. alatum (22.70%), suggesting a recent hybrid origin. Chromosome number is mostly constant within this section and polyploidy is the only source of modification. Although 2C varied considerably among the 20 taxa investigated, the diversity observed cannot be attributed only to polyploidy events because large variations of DNA content were also observed among diploids.

Twitter Demographics

The data shown below were collected from the profiles of 3 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 11 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 11 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 3 27%
Student > Ph. D. Student 1 9%
Professor 1 9%
Student > Master 1 9%
Student > Bachelor 1 9%
Other 1 9%
Unknown 3 27%
Readers by discipline Count As %
Agricultural and Biological Sciences 8 73%
Biochemistry, Genetics and Molecular Biology 1 9%
Medicine and Dentistry 1 9%
Unknown 1 9%