| Journal: | Genetics and molecular biology |
| Database: | PERIÓDICA |
| System number: | 000418165 |
| ISSN: | 1415-4757 |
| Authors: | Alencar, Juliana Lustosa Matos de1 Kaltchuk-Santos, Eliane2 Fachinetto, Juliana1 Tacuatia, Luana Olinda3 Forni-Martins, Eliana Regina3 Stiehl-Alves, Eudes Maria4 Souza-Chies, Tatiana Teixeira de5 |
| Institutions: | 1Universidade Federal do Rio Grande do Sul, Programa de Pos-Graduacao em Genetica e Biologia Molecular, Porto Alegre, Rio Grande do Sul. Brasil 2Universidade Federal do Rio Grande do Sul, Departamento de Genetica, Porto Alegre, Rio Grande do Sul. Brasil 3Universidade Estadual de Campinas, Departamento de Biologia Vegetal, Campinas, Sao Paulo. Brasil |
| Year: | 2018 |
| Volumen: | 41 |
| Pages: | 327-340 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | Evolutionary analyses have been widely used for evaluation of genetic diversity of natural populations and correlate these data to the fitness of the species, especially in the case of threatened species. Calydorea crocoides occurs in a restricted area at altitudes from 800 to 1500 m in southern Brazil and is considered endangered. A study assessing genetic diversity, cytogenetic features and ecological niche was performed aiming to characterize C. crocoides by multidisciplinary approaches. Molecular data highlighted that most of the total variation (76%; p < 0.001) was found within populations and the parameters of genetic diversity were high at the species level ( PPB = 98.97%; I = 0.4319; h = 0.2821). Gene flow ( Nm ) was estimated in 0.97 individuals per generation. Cytogenetically, C. crocoides pres- ents a bimodal karyotype and low asymmetry. DAPI banding pattern was uniform, but the CMA-signal evidenced a pericentric inversion in the population ESC688. The species presents high pollen viability and two different morphologies of pollen grains. Our data showed high levels of polymorphism maintained in this species that could ensure conservationist practices in which the main goal is to preserve the evolutionary potential of the species through the maintenance of genetic diversity |
| Disciplines: | Biología |
| Keyword: | Genética, Biología celular, Evolución y filogenia, Calydorea crocoides, Diferenciación genética, Marcadores ISSR, Viabilidad del polen, Análisis citológico |
| Keyword: | Genetics, Cell biology, Evolution and phylogeny, Calydorea crocoides, Genetic differentiation, ISSR markers, Pollen viability, Cytogenetic analysis |
| Full text: | Texto completo (Ver PDF) |
