AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect
Understanding adaptive genetic variation and its relation to environmental factors are important for understanding how plants adapt to climate change and for managing genetic resources. Genome scans for the loci exhibiting either notably high or low levels of population differentiation (outlier loci...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2016-05-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2016.00698/full |
| _version_ | 1818156610748416000 |
|---|---|
| author | Aihong eYang Na eWei Peter W Fritsch Xiaohong eYao |
| author_facet | Aihong eYang Na eWei Peter W Fritsch Xiaohong eYao |
| author_sort | Aihong eYang |
| collection | DOAJ |
| description | Understanding adaptive genetic variation and its relation to environmental factors are important for understanding how plants adapt to climate change and for managing genetic resources. Genome scans for the loci exhibiting either notably high or low levels of population differentiation (outlier loci) provide one means of identifying genomic regions possibly associated with convergent or divergent selection. In this study, we combined AFLP genome scan and environmental association analysis to test for signals of natural selection in natural populations of Liriodendron chinense (Chinese Tulip Tree; Magnoliaceae) along a latitudinal transect. We genotyped 276 individuals from 11 populations of L. chinense using 987 AFLP markers. Two complementary methods (Dfdist and BayeScan) and association analysis between AFLP loci and climate factors were applied to detect outlier loci. Our analyses recovered both neutral and potentially adaptive genetic differentiation among populations of L. chinense. We found moderate genetic diversity within populations and high genetic differentiation among populations with reduced genetic diversity towards the periphery of the species ranges. Nine AFLP marker loci showed evidence of being outliers for population differentiation for both detection methods. Of these, six were strongly associated with at least one climate factor. Temperature, precipitation and radiation were found to be three important factors influencing local adaptation of L. chinense. The outlier AFLP loci are likely not the target of natural selection, but the neighboring genes of these loci might be involved in local adaptation. Hence, these candidates should be validated by further studies. |
| first_indexed | 2024-12-11T15:01:02Z |
| format | Article |
| id | doaj.art-4e94458f11d948feb2a82678d59c7790 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-11T15:01:02Z |
| publishDate | 2016-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-4e94458f11d948feb2a82678d59c77902022-12-22T01:01:09ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2016-05-01710.3389/fpls.2016.00698187296AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transectAihong eYang0Na eWei1Peter W Fritsch2Xiaohong eYao3Wuhan Botanical Garden, The Chinese Academy of SciencesDepartment of Ecology and Evolutional Biology, The University of MichiganBotanical Research Institute of TexasWuhan Botanical Garden, The Chinese Academy of SciencesUnderstanding adaptive genetic variation and its relation to environmental factors are important for understanding how plants adapt to climate change and for managing genetic resources. Genome scans for the loci exhibiting either notably high or low levels of population differentiation (outlier loci) provide one means of identifying genomic regions possibly associated with convergent or divergent selection. In this study, we combined AFLP genome scan and environmental association analysis to test for signals of natural selection in natural populations of Liriodendron chinense (Chinese Tulip Tree; Magnoliaceae) along a latitudinal transect. We genotyped 276 individuals from 11 populations of L. chinense using 987 AFLP markers. Two complementary methods (Dfdist and BayeScan) and association analysis between AFLP loci and climate factors were applied to detect outlier loci. Our analyses recovered both neutral and potentially adaptive genetic differentiation among populations of L. chinense. We found moderate genetic diversity within populations and high genetic differentiation among populations with reduced genetic diversity towards the periphery of the species ranges. Nine AFLP marker loci showed evidence of being outliers for population differentiation for both detection methods. Of these, six were strongly associated with at least one climate factor. Temperature, precipitation and radiation were found to be three important factors influencing local adaptation of L. chinense. The outlier AFLP loci are likely not the target of natural selection, but the neighboring genes of these loci might be involved in local adaptation. Hence, these candidates should be validated by further studies.http://journal.frontiersin.org/Journal/10.3389/fpls.2016.00698/fulllocal adaptationEnvironmental gradientGenome scanoutlier lociChinese Tulip Tree |
| spellingShingle | Aihong eYang Na eWei Peter W Fritsch Xiaohong eYao AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect Frontiers in Plant Science local adaptation Environmental gradient Genome scan outlier loci Chinese Tulip Tree |
| title | AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect |
| title_full | AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect |
| title_fullStr | AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect |
| title_full_unstemmed | AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect |
| title_short | AFLP genome scanning reveals divergent selection in natural populations of Liriodendron chinense (Magnoliaceae) along a latitudinal transect |
| title_sort | aflp genome scanning reveals divergent selection in natural populations of liriodendron chinense magnoliaceae along a latitudinal transect |
| topic | local adaptation Environmental gradient Genome scan outlier loci Chinese Tulip Tree |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2016.00698/full |
| work_keys_str_mv | AT aihongeyang aflpgenomescanningrevealsdivergentselectioninnaturalpopulationsofliriodendronchinensemagnoliaceaealongalatitudinaltransect AT naewei aflpgenomescanningrevealsdivergentselectioninnaturalpopulationsofliriodendronchinensemagnoliaceaealongalatitudinaltransect AT peterwfritsch aflpgenomescanningrevealsdivergentselectioninnaturalpopulationsofliriodendronchinensemagnoliaceaealongalatitudinaltransect AT xiaohongeyao aflpgenomescanningrevealsdivergentselectioninnaturalpopulationsofliriodendronchinensemagnoliaceaealongalatitudinaltransect |