Genetic variation and habitat conditions inBetula humilisSchrk. populations in Poland, Belarus and Latvia
| Autor: | S. KŁosowski, E. JabŁońska, K. A. Jadwiszczak, A. Banaszek |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology. 149:433-441 |
| ISSN: | 1724-5575 1126-3504 |
| Popis: | A rapidly growing human population and the extirpation of numerous species make modern wetlands among the most threatened of ecosystems. One of the endangered wetland plants in central and eastern Europe is Betula humilis. B. humilis forms comparably abundant populations on both well-preserved and drained fens; thus, we aimed in this paper to investigate the relationships between habitat quality parameters (e.g. concentrations of calcium and magnesium, groundwater levels, pH and conductivity) and genetic diversity in 12 populations of B. humilis from Poland, Belarus and Latvia. For the purposes of this study, alcohol dehydrogenase (ADH) gene sequences and nuclear microsatellites were chosen as molecular markers. Analyses revealed that only the Ca2+ concentration was significantly negative relative to the observed heterozygosity of microsatellites, which suggests that calcium access is the only factor influencing genetic variation at B. humilis localities. No genetic differentiation was detected between po... |
| Databáze: | OpenAIRE |
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