Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC
The island of St Helena in the South Atlantic Ocean has a rich endemic flora, with 10 endemic genera and 45 recognised endemic species. However, populations of most endemic species have undergone dramatic reductions or extinction due to over-exploitation, habitat destruction and competition from inv...
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ftnerc:oai:nora.nerc.ac.uk:514663 2023-05-15T18:21:10+02:00 Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC Gray, Alan Perry, Annika Cavers, Stephen Eastwood, Antonia Biermann, Michelle Darlow, Andrew Thomas, Vanessa Lambdon, Phil 2017-02 text http://nora.nerc.ac.uk/id/eprint/514663/ https://nora.nerc.ac.uk/id/eprint/514663/1/N514663PP.pdf https://doi.org/10.1007/s10592-016-0884-8 en eng Springer https://nora.nerc.ac.uk/id/eprint/514663/1/N514663PP.pdf Gray, Alan; Perry, Annika; Cavers, Stephen; Eastwood, Antonia; Biermann, Michelle; Darlow, Andrew; Thomas, Vanessa; Lambdon, Phil. 2017 Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC. Conservation Genetics, 18 (1). 241-246. https://doi.org/10.1007/s10592-016-0884-8 <https://doi.org/10.1007/s10592-016-0884-8> Ecology and Environment Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1007/s10592-016-0884-8 2023-02-04T19:43:37Z The island of St Helena in the South Atlantic Ocean has a rich endemic flora, with 10 endemic genera and 45 recognised endemic species. However, populations of most endemic species have undergone dramatic reductions or extinction due to over-exploitation, habitat destruction and competition from invasive species. Consequently, endemic species are likely to have lost genetic variation, in some cases to extreme degrees. Here, the entire extant wild populations and all planted trees in seed orchards, of two critically endangered species in the endemic genus Commidendrum (Asteraceae), C. rotundifolium and C. spurium, were sampled to assess levels of genetic variation and inbreeding. Six new microsatellite loci were developed from next-generation sequence data, and a total of 190 samples were genotyped. Some seed orchard trees contained alleles from both wild C. rotundifolium and C. spurium indicating they could be hybrids and that some backcrossing may have occurred. Some of these trees were more similar to C. rotundifolium than C. spurium both genetically and morphologically. Importantly, allelic variation was detected in the putative hybrids that was not present in wild material. C. rotundifolium is represented by just two individuals one wild and one planted and C. spurium by seven, therefore the seed orchard trees comprise an important part of the total remaining genetic diversity in the genus Commidendrum. Article in Journal/Newspaper South Atlantic Ocean Natural Environment Research Council: NERC Open Research Archive St. Helena ENVELOPE(8.575,8.575,63.621,63.621) Conservation Genetics 18 1 241 246 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Ecology and Environment |
spellingShingle |
Ecology and Environment Gray, Alan Perry, Annika Cavers, Stephen Eastwood, Antonia Biermann, Michelle Darlow, Andrew Thomas, Vanessa Lambdon, Phil Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
topic_facet |
Ecology and Environment |
description |
The island of St Helena in the South Atlantic Ocean has a rich endemic flora, with 10 endemic genera and 45 recognised endemic species. However, populations of most endemic species have undergone dramatic reductions or extinction due to over-exploitation, habitat destruction and competition from invasive species. Consequently, endemic species are likely to have lost genetic variation, in some cases to extreme degrees. Here, the entire extant wild populations and all planted trees in seed orchards, of two critically endangered species in the endemic genus Commidendrum (Asteraceae), C. rotundifolium and C. spurium, were sampled to assess levels of genetic variation and inbreeding. Six new microsatellite loci were developed from next-generation sequence data, and a total of 190 samples were genotyped. Some seed orchard trees contained alleles from both wild C. rotundifolium and C. spurium indicating they could be hybrids and that some backcrossing may have occurred. Some of these trees were more similar to C. rotundifolium than C. spurium both genetically and morphologically. Importantly, allelic variation was detected in the putative hybrids that was not present in wild material. C. rotundifolium is represented by just two individuals one wild and one planted and C. spurium by seven, therefore the seed orchard trees comprise an important part of the total remaining genetic diversity in the genus Commidendrum. |
format |
Article in Journal/Newspaper |
author |
Gray, Alan Perry, Annika Cavers, Stephen Eastwood, Antonia Biermann, Michelle Darlow, Andrew Thomas, Vanessa Lambdon, Phil |
author_facet |
Gray, Alan Perry, Annika Cavers, Stephen Eastwood, Antonia Biermann, Michelle Darlow, Andrew Thomas, Vanessa Lambdon, Phil |
author_sort |
Gray, Alan |
title |
Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
title_short |
Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
title_full |
Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
title_fullStr |
Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
title_full_unstemmed |
Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC |
title_sort |
hybrid plants preserve unique genetic variation in the st helena endemic trees commidendrum rotundifolium dc roxb. and c. spurium (g.forst.) dc |
publisher |
Springer |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/514663/ https://nora.nerc.ac.uk/id/eprint/514663/1/N514663PP.pdf https://doi.org/10.1007/s10592-016-0884-8 |
long_lat |
ENVELOPE(8.575,8.575,63.621,63.621) |
geographic |
St. Helena |
geographic_facet |
St. Helena |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/514663/1/N514663PP.pdf Gray, Alan; Perry, Annika; Cavers, Stephen; Eastwood, Antonia; Biermann, Michelle; Darlow, Andrew; Thomas, Vanessa; Lambdon, Phil. 2017 Hybrid plants preserve unique genetic variation in the St Helena endemic trees Commidendrum rotundifolium DC Roxb. and C. spurium (G.Forst.) DC. Conservation Genetics, 18 (1). 241-246. https://doi.org/10.1007/s10592-016-0884-8 <https://doi.org/10.1007/s10592-016-0884-8> |
op_doi |
https://doi.org/10.1007/s10592-016-0884-8 |
container_title |
Conservation Genetics |
container_volume |
18 |
container_issue |
1 |
container_start_page |
241 |
op_container_end_page |
246 |
_version_ |
1766200289880178688 |