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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Andrade, L. A. Felix, L. P. Pitrez, S. R. Assis, F. N. M. |
| Spatial Coverage | Brazil |
| Description | Country affiliation: Brazil Author Affiliation: Pitrez SR ( Laboratório de Citogenética Vegetal, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil.); Andrade LA ( Laboratório de Citogenética Vegetal, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil.); Assis FN ( Laboratório de Citogenética Vegetal, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil nolletmedeiros@yahoo.com.br.); Felix LP ( Laboratório de Citogenética Vegetal, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil.) |
| Abstract | The aim of this study was to examine the hypothesis that plants with higher ploidy levels are selected by environments under more extremely stressful conditions than the same (or closely related) species from less rigorous terrestrial or epiphytic habitats. Therefore, we analyzed the chromosome numbers of 26 species belonging to 21 genera and 13 families of angiosperms that were collected on 4 inselbergs in Paraiba State, northeastern Brazil. In addition, 13 rupicolous species that grow in the study area, whose chromosome numbers were previously determined, were included in our analysis. Plant chromosome numbers varied between 2n = 12 in Callisia filiformis (Commelinaceae) to 2n = ca. 240 in Epidendrum cinnabarinum (Orchidaceae). The data as a whole do not support the hypothesis that inselberg species have greater levels of ploidy than terrestrial or epiphytic populations of the same or closely related species because these rupicolous species demonstrate chromosomal evolution patterns that are independent of the stressful environments of inselberg formations. |
| e-ISSN | 16765680 |
| Journal | Genetics and Molecular Research |
| Issue Number | 4 |
| Volume Number | 13 |
| Language | English |
| Publisher | Fundação de Pesquisas Científicas de Ribeirão Preto |
| Publisher Date | 2014-10-20 |
| Publisher Place | Brazil |
| Access Restriction | Open |
| Subject Keyword | Gene-environment Interaction Polyploidy Stress, Physiological Genetics Angiosperms Chromosomes, Plant Karyotype Research Support, Non-u.s. Gov't Discipline Genetics Discipline Molecular Biology Discipline Bioinformatics |
| Content Type | Text |
| Resource Type | Article |
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