Publication Details |
Category | Text Publication |
Reference Category | Journals |
DOI | 10.1007/s10144-012-0332-7 |
Document | Shareable Link |
Title (Primary) | Leading-edge populations do not show low genetic diversity or high differentiation in a wind-pollinated tree |
Author | Shi, M.-M.; Chen, X.-Y. |
Journal | Population Ecology |
Year | 2012 |
Department | BZF |
Volume | 54 |
Issue | 4 |
Page From | 591 |
Page To | 600 |
Language | englisch |
Supplements | https://esj-journals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1007%2Fs10144-012-0332-7&file=pope0591-sup-0004.pdf |
Keywords | bottleneck;Castanopsis sclerophylla;gene flow;genetic variation;wind-direction |
Abstract |
Climate changes can shift species’ ranges. Knowledge on genetic variation of the leading-edge populations provides critical information to understand responses and adaptation of plants to projected climate warming. To date, the research into genetic variation of leading-edge populations has been limited, particularly in the role of wind-mediated pollen flow in maintaining high genetic variation. Castanopsis sclerophylla (Fagaceae) is a wind-pollinated and gravity-dispersed tree. In the present study, we used seven polymorphic microsatellites to genotype 482 samples from five leading-edge and 12 non-edge populations. Significant effects of recent population bottleneck events were found in three of the five leading-edge populations, indicating that the leading-edge populations might have been recolonized after the Last Glacial Maximum. Genetic diversity was higher, though not significantly, in leading-edge than in non-edge populations. Relationship between genetic diversity and latitude indicated an increasing trend of genetic diversity towards leading-edge populations. No significant difference in genetic differentiation was found between leading-edge and non-edge populations. The inconsistence with the general predictions by leading-edge colonization model could be explained by high gene flow via pollen grains. Pollen-mediated gene flow could maintain high genetic diversity within and low differentiation among leading-edge populations. In response to climate warming, high genetic variation may provide leading-edge populations raw materials for evolutionary adaptation to future environmental conditions. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=12990 |
Shi, M.-M., Chen, X.-Y. (2012): Leading-edge populations do not show low genetic diversity or high differentiation in a wind-pollinated tree Popul. Ecol. 54 (4), 591 - 600 |