Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range
Oakleaf hydrangea (Hydrangea quercifolia) is an understory shrub native to the southeastern United States. The species occupies a relatively small native range, and little is known about its demography, genetic diversity, or needs for conservation. Samples were collected from 188 plants in 73 locati...
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| Format: | Article |
| Language: | English |
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American Society for Horticultural Science (ASHS)
2023-01-01
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| Series: | Journal of the American Society for Horticultural Science |
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| Online Access: | https://journals.ashs.org/jashs/view/journals/jashs/148/1/article-p29.xml |
| _version_ | 1797839207181320192 |
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| author | Andrew Sherwood Lisa W. Alexander Matthew D. Clark Xingbo Wu Stan C. Hokanson |
| author_facet | Andrew Sherwood Lisa W. Alexander Matthew D. Clark Xingbo Wu Stan C. Hokanson |
| author_sort | Andrew Sherwood |
| collection | DOAJ |
| description | Oakleaf hydrangea (Hydrangea quercifolia) is an understory shrub native to the southeastern United States. The species occupies a relatively small native range, and little is known about its demography, genetic diversity, or needs for conservation. Samples were collected from 188 plants in 73 locations throughout the species range and were genotyped using genotyping by sequencing. A structure analysis identified six genetic clusters that are geographically defined. Although these clusters are weakly differentiated, each has unique alleles. An environmental association analysis revealed that environmental variables explain 11.3% of genetic diversity, and population structure explains 13.5%. Further, 231 putative adaptive alleles were identified, most of which are correlated with precipitation-related variables, indicating that precipitation has an impact on genetic diversity in H. quercifolia. Many historically documented populations were found to be either extirpated or at risk of extirpation. The genetic clusters on the southern extent of the species range are relatively small and contain putative adaptive alleles at relatively high frequencies. These results highlight the importance of preserving representative germplasm from throughout the species range. |
| first_indexed | 2024-04-09T15:54:22Z |
| format | Article |
| id | doaj.art-aac91e035c8d4a59a9de87b69ce577ff |
| institution | Directory Open Access Journal |
| issn | 2327-9788 |
| language | English |
| last_indexed | 2024-04-09T15:54:22Z |
| publishDate | 2023-01-01 |
| publisher | American Society for Horticultural Science (ASHS) |
| record_format | Article |
| series | Journal of the American Society for Horticultural Science |
| spelling | doaj.art-aac91e035c8d4a59a9de87b69ce577ff2023-04-25T19:55:37ZengAmerican Society for Horticultural Science (ASHS)Journal of the American Society for Horticultural Science2327-97882023-01-0114812941https://doi.org/10.21273/JASHS05255-22Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native RangeAndrew Sherwood0Lisa W. Alexander1Matthew D. Clark2Xingbo Wu3Stan C. Hokanson4US Department of AgricultureUS Department of Agriculture University of MinnesotaUniversity of FloridaUniversity of MinnesotaOakleaf hydrangea (Hydrangea quercifolia) is an understory shrub native to the southeastern United States. The species occupies a relatively small native range, and little is known about its demography, genetic diversity, or needs for conservation. Samples were collected from 188 plants in 73 locations throughout the species range and were genotyped using genotyping by sequencing. A structure analysis identified six genetic clusters that are geographically defined. Although these clusters are weakly differentiated, each has unique alleles. An environmental association analysis revealed that environmental variables explain 11.3% of genetic diversity, and population structure explains 13.5%. Further, 231 putative adaptive alleles were identified, most of which are correlated with precipitation-related variables, indicating that precipitation has an impact on genetic diversity in H. quercifolia. Many historically documented populations were found to be either extirpated or at risk of extirpation. The genetic clusters on the southern extent of the species range are relatively small and contain putative adaptive alleles at relatively high frequencies. These results highlight the importance of preserving representative germplasm from throughout the species range.https://journals.ashs.org/jashs/view/journals/jashs/148/1/article-p29.xmlallelic diversityenvironmental associationhydrangea quercifoliapopulation genetics |
| spellingShingle | Andrew Sherwood Lisa W. Alexander Matthew D. Clark Xingbo Wu Stan C. Hokanson Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range Journal of the American Society for Horticultural Science allelic diversity environmental association hydrangea quercifolia population genetics |
| title | Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range |
| title_full | Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range |
| title_fullStr | Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range |
| title_full_unstemmed | Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range |
| title_short | Precipitation, Temperature, and Population Structure Influence Genetic Diversity of Oakleaf Hydrangea Throughout Its Native Range |
| title_sort | precipitation temperature and population structure influence genetic diversity of oakleaf hydrangea throughout its native range |
| topic | allelic diversity environmental association hydrangea quercifolia population genetics |
| url | https://journals.ashs.org/jashs/view/journals/jashs/148/1/article-p29.xml |
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