Genetic and ecological niche modeling of Calydorea crocoides (Iridaceae): An endemic species of Subtropical Highland Grasslands



Título del documento: Genetic and ecological niche modeling of Calydorea crocoides (Iridaceae): An endemic species of Subtropical Highland Grasslands
Revista: Genetics and molecular biology
Base de datos: PERIÓDICA
Número de sistema: 000418165
ISSN: 1415-4757
Autores: 1
2
1
3
3
4
5
Instituciones: 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
Año:
Volumen: 41
Paginación: 327-340
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés 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
Disciplinas: Biología
Palabras clave: 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
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