| Journal: | Electronic journal of biotechnology |
| Database: | PERIÓDICA |
| System number: | 000398146 |
| ISSN: | 0717-3458 |
| Authors: | Pomponio, María F1 Torales, Susana1 Gallo, Leonardo A2 Pastorino, Mario J5 Marchelli, Paula5 Cervera, María Teresa3 Poltri, Susana Marcucci4 |
| Institutions: | 1Instituto Nacional de Tecnología Agropecuaria, Instituto de Recursos Biológicos, Castelar, Buenos Aires. Argentina 2Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Bariloche, Bariloche, Río Negro. Argentina 3Instituto Nacional de Tecnologia Agraria y Alimentaria, Centro de Investigación Forestal, Madrid. España 4Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Instituto de Biotecnología, Castelar, Buenos Aires. Argentina 5Consejo Nacional de Investigaciones Científicas y Técnicas, La Plata, Buenos Aires. Argentina |
| Year: | 2013 |
| Volumen: | 16 |
| Number: | 2 |
| Pages: | 1-12 |
| Country: | Chile |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri commonly known as Patagonian cypress is a member of the Cupressaceae family, characterized by a high adaptive potential for growing in marginal areas and good timber quality. The species grows over a wide area and under a wide range of rainfall. This study assessed adaptive genetic variation at SNP level in candidate genes involved in response to drought stress. Results: A total of 18 single nucleotide polymorphisms (SNPs) were found among 1,428 bp. Average nucleotide diversi ty value ( π = 0.00312) was similar to those previously reported in other Cupressaceae. The Fst average among genes and populations was 0.163 and the lowest differentiation was observed in continuous and humid populations. A number of neutrality tests were applied to find evidence of positive selection in our candidate gene set, but only AcAQP2 gene in Pedregoso and San Ramón populations revealed significant departures from neutrality with positive values suggesting balancing selection. Conclusions: In this study we report the levels of nucleotide diversity searched in some drought stress candidate genes in Austrocedrus chilensis and the selective factors that may be acting on this species |
| Disciplines: | Biología |
| Keyword: | Botánica, Fisiología vegetal, Genética, Adaptación, Sequía, Variación genética, Selección de equilibrio, Ciprés, Austrocedrus chilensis, Polimorfismos de nucleótido único (SNPs) |
| Keyword: | Biology, Botany, Genetics, Plant physiology, Adaptation, Genetic variation, Drought, Balancing selection, Cypress, Austrocedrus chilensis, Single nucleotide polymorphism (SNPs) |
| Full text: | Texto completo (Ver PDF) |
