Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species
Sympatric tree species are subject to similar climatic drivers, posing a question as to whether they display comparable adaptive responses. However, no study has explicitly examined local adaptation of co-occurring parasitic and autotrophic plant species to the abiotic environment. Here we test the...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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WILEY
2020
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| Online Access: | http://purl.org/au-research/grants/arc/IC150100041 http://hdl.handle.net/20.500.11937/87447 |
| _version_ | 1848764919925702656 |
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| author | Walters, S.J. Robinson, Todd Byrne, M. Wardell-Johnson, Grant Nevill, Paul |
| author_facet | Walters, S.J. Robinson, Todd Byrne, M. Wardell-Johnson, Grant Nevill, Paul |
| author_sort | Walters, S.J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Sympatric tree species are subject to similar climatic drivers, posing a question as to whether they display comparable adaptive responses. However, no study has explicitly examined local adaptation of co-occurring parasitic and autotrophic plant species to the abiotic environment. Here we test the hypotheses that a generalist parasitic tree would display a weaker signal of selection and that genomic variation would associate with fewer climatic variables (particularly precipitation) but have similar spatial patterns to a sympatric autotrophic tree species. To test these hypotheses, we collected samples from 17 sites across the range of two tree species, the hemiparasite Nuytsia floribunda (n = 264) and sympatric autotroph Melaleuca rhaphiophylla (n = 272). We obtained 5,531 high-quality genome-wide single nucleotide polymorphisms (SNPs) for M. rhaphiophylla and 6,727 SNPs for N. floribunda using DArTseq genome scan technology. Population differentiation and environmental association approaches were used to identify signals of selection. Generalized dissimilarly modelling was used to detect climatic and spatial patterns of local adaptation across climatic gradients. Overall, 322 SNPs were identified as putatively adaptive for the autotroph, while only 57 SNPs were identified for the parasitic species. We found genomic variation to associate with different sets of bioclimatic variables for each species, with precipitation relatively less important for the parasite. Spatial patterns of predicted adaptive variability were different and indicate that co-occurring species with disparate life history traits may not respond equally to selective pressures (i.e., temperature and precipitation). Together, these findings provide insight into local adaptation of sympatric parasitic and autotrophic tree species to abiotic environments. |
| first_indexed | 2025-11-14T11:27:01Z |
| format | Journal Article |
| id | curtin-20.500.11937-87447 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:27:01Z |
| publishDate | 2020 |
| publisher | WILEY |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-874472022-01-28T05:50:17Z Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species Walters, S.J. Robinson, Todd Byrne, M. Wardell-Johnson, Grant Nevill, Paul Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Ecology Evolutionary Biology Environmental Sciences & Ecology comparative genomics generalist parasite genome scans genotype-environment association landscape genomics parasitic species GENOME SCANS R-PACKAGE SPATIAL PATTERN PRACTICAL GUIDE LANDSCAPE SELECTION BIODIVERSITY MULTIVARIATE ASSOCIATION RESTORATION Sympatric tree species are subject to similar climatic drivers, posing a question as to whether they display comparable adaptive responses. However, no study has explicitly examined local adaptation of co-occurring parasitic and autotrophic plant species to the abiotic environment. Here we test the hypotheses that a generalist parasitic tree would display a weaker signal of selection and that genomic variation would associate with fewer climatic variables (particularly precipitation) but have similar spatial patterns to a sympatric autotrophic tree species. To test these hypotheses, we collected samples from 17 sites across the range of two tree species, the hemiparasite Nuytsia floribunda (n = 264) and sympatric autotroph Melaleuca rhaphiophylla (n = 272). We obtained 5,531 high-quality genome-wide single nucleotide polymorphisms (SNPs) for M. rhaphiophylla and 6,727 SNPs for N. floribunda using DArTseq genome scan technology. Population differentiation and environmental association approaches were used to identify signals of selection. Generalized dissimilarly modelling was used to detect climatic and spatial patterns of local adaptation across climatic gradients. Overall, 322 SNPs were identified as putatively adaptive for the autotroph, while only 57 SNPs were identified for the parasitic species. We found genomic variation to associate with different sets of bioclimatic variables for each species, with precipitation relatively less important for the parasite. Spatial patterns of predicted adaptive variability were different and indicate that co-occurring species with disparate life history traits may not respond equally to selective pressures (i.e., temperature and precipitation). Together, these findings provide insight into local adaptation of sympatric parasitic and autotrophic tree species to abiotic environments. 2020 Journal Article http://hdl.handle.net/20.500.11937/87447 10.1111/mec.15537 English http://purl.org/au-research/grants/arc/IC150100041 WILEY fulltext |
| spellingShingle | Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Ecology Evolutionary Biology Environmental Sciences & Ecology comparative genomics generalist parasite genome scans genotype-environment association landscape genomics parasitic species GENOME SCANS R-PACKAGE SPATIAL PATTERN PRACTICAL GUIDE LANDSCAPE SELECTION BIODIVERSITY MULTIVARIATE ASSOCIATION RESTORATION Walters, S.J. Robinson, Todd Byrne, M. Wardell-Johnson, Grant Nevill, Paul Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title | Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title_full | Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title_fullStr | Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title_full_unstemmed | Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title_short | Contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| title_sort | contrasting patterns of local adaptation along climatic gradients between a sympatric parasitic and autotrophic tree species |
| topic | Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Ecology Evolutionary Biology Environmental Sciences & Ecology comparative genomics generalist parasite genome scans genotype-environment association landscape genomics parasitic species GENOME SCANS R-PACKAGE SPATIAL PATTERN PRACTICAL GUIDE LANDSCAPE SELECTION BIODIVERSITY MULTIVARIATE ASSOCIATION RESTORATION |
| url | http://purl.org/au-research/grants/arc/IC150100041 http://hdl.handle.net/20.500.11937/87447 |