Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces
We analysed a representative collection of New World sweet potato landraces (329 accessions from Mexico to Peru) with both chloroplast and nuclear microsatellite markers. Both kinds of markers supported the existence of two geographically restricted genepools, corresponding to accessions from the north-western part of South America and accessions from the Caribbean and Central America region. Our conservative cpSSRs markers revealed that the divergence between the two haplotype groups is associated with numerous mutation events concerning various markers, supporting the idea that this divergence may be ancient, predating domestication. For both kinds of markers, we found no significant difference in diversity between the two genepools and detected region-specific alleles in both groups. Previous studies have favoured the hypothesis of a single domestication of this crop. Our analysis suggests at least two independent domestications, in Central/Caribbean America and in the north-western part of South America. Sweet potato was then dispersed from these centres throughout tropical America. Comparison of nuclear and chloroplast data suggests that exchanges of clones and sexual reproduction were both important processes in landrace diversification in this clonally propagated crop. Our analysis provides useful tools for rationalizing the conservation and use of sweet potato germplasm collections.
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Subjects: | F70 - Taxonomie végétale et phytogéographie, F30 - Génétique et amélioration des plantes, Ipomoea batatas, éthnobotanique, biogéographie, http://aims.fao.org/aos/agrovoc/c_3937, http://aims.fao.org/aos/agrovoc/c_24023, http://aims.fao.org/aos/agrovoc/c_915, http://aims.fao.org/aos/agrovoc/c_4792, http://aims.fao.org/aos/agrovoc/c_5725, http://aims.fao.org/aos/agrovoc/c_2724, http://aims.fao.org/aos/agrovoc/c_1320, http://aims.fao.org/aos/agrovoc/c_7253, http://aims.fao.org/aos/agrovoc/c_1434, |
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dig-cirad-fr-5614352024-01-28T19:34:47Z http://agritrop.cirad.fr/561435/ http://agritrop.cirad.fr/561435/ Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces. Roullier Caroline, Rossel Genoveva, Tay David, McKey Doyle B., Lebot Vincent. 2011. Molecular Ecology, 20 (19) : 3963-3977.https://doi.org/10.1111/j.1365-294X.2011.05229.x <https://doi.org/10.1111/j.1365-294X.2011.05229.x> Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces Roullier, Caroline Rossel, Genoveva Tay, David McKey, Doyle B. Lebot, Vincent eng 2011 Molecular Ecology F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 Mexique Pérou Europe Caraïbes Amérique du Sud Amérique centrale http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 We analysed a representative collection of New World sweet potato landraces (329 accessions from Mexico to Peru) with both chloroplast and nuclear microsatellite markers. Both kinds of markers supported the existence of two geographically restricted genepools, corresponding to accessions from the north-western part of South America and accessions from the Caribbean and Central America region. Our conservative cpSSRs markers revealed that the divergence between the two haplotype groups is associated with numerous mutation events concerning various markers, supporting the idea that this divergence may be ancient, predating domestication. For both kinds of markers, we found no significant difference in diversity between the two genepools and detected region-specific alleles in both groups. Previous studies have favoured the hypothesis of a single domestication of this crop. Our analysis suggests at least two independent domestications, in Central/Caribbean America and in the north-western part of South America. Sweet potato was then dispersed from these centres throughout tropical America. Comparison of nuclear and chloroplast data suggests that exchanges of clones and sexual reproduction were both important processes in landrace diversification in this clonally propagated crop. Our analysis provides useful tools for rationalizing the conservation and use of sweet potato germplasm collections. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/561435/1/document_561435.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/j.1365-294X.2011.05229.x 10.1111/j.1365-294X.2011.05229.x info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-294X.2011.05229.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/j.1365-294X.2011.05229.x |
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F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 |
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F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 Roullier, Caroline Rossel, Genoveva Tay, David McKey, Doyle B. Lebot, Vincent Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
description |
We analysed a representative collection of New World sweet potato landraces (329 accessions from Mexico to Peru) with both chloroplast and nuclear microsatellite markers. Both kinds of markers supported the existence of two geographically restricted genepools, corresponding to accessions from the north-western part of South America and accessions from the Caribbean and Central America region. Our conservative cpSSRs markers revealed that the divergence between the two haplotype groups is associated with numerous mutation events concerning various markers, supporting the idea that this divergence may be ancient, predating domestication. For both kinds of markers, we found no significant difference in diversity between the two genepools and detected region-specific alleles in both groups. Previous studies have favoured the hypothesis of a single domestication of this crop. Our analysis suggests at least two independent domestications, in Central/Caribbean America and in the north-western part of South America. Sweet potato was then dispersed from these centres throughout tropical America. Comparison of nuclear and chloroplast data suggests that exchanges of clones and sexual reproduction were both important processes in landrace diversification in this clonally propagated crop. Our analysis provides useful tools for rationalizing the conservation and use of sweet potato germplasm collections. |
format |
article |
topic_facet |
F70 - Taxonomie végétale et phytogéographie F30 - Génétique et amélioration des plantes Ipomoea batatas éthnobotanique biogéographie http://aims.fao.org/aos/agrovoc/c_3937 http://aims.fao.org/aos/agrovoc/c_24023 http://aims.fao.org/aos/agrovoc/c_915 http://aims.fao.org/aos/agrovoc/c_4792 http://aims.fao.org/aos/agrovoc/c_5725 http://aims.fao.org/aos/agrovoc/c_2724 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_7253 http://aims.fao.org/aos/agrovoc/c_1434 |
author |
Roullier, Caroline Rossel, Genoveva Tay, David McKey, Doyle B. Lebot, Vincent |
author_facet |
Roullier, Caroline Rossel, Genoveva Tay, David McKey, Doyle B. Lebot, Vincent |
author_sort |
Roullier, Caroline |
title |
Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
title_short |
Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
title_full |
Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
title_fullStr |
Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
title_full_unstemmed |
Combining chloroplast and nuclear microsatellites to investigate origin and dispersal of New World sweet potato landraces |
title_sort |
combining chloroplast and nuclear microsatellites to investigate origin and dispersal of new world sweet potato landraces |
url |
http://agritrop.cirad.fr/561435/ http://agritrop.cirad.fr/561435/1/document_561435.pdf |
work_keys_str_mv |
AT roulliercaroline combiningchloroplastandnuclearmicrosatellitestoinvestigateoriginanddispersalofnewworldsweetpotatolandraces AT rosselgenoveva combiningchloroplastandnuclearmicrosatellitestoinvestigateoriginanddispersalofnewworldsweetpotatolandraces AT taydavid combiningchloroplastandnuclearmicrosatellitestoinvestigateoriginanddispersalofnewworldsweetpotatolandraces AT mckeydoyleb combiningchloroplastandnuclearmicrosatellitestoinvestigateoriginanddispersalofnewworldsweetpotatolandraces AT lebotvincent combiningchloroplastandnuclearmicrosatellitestoinvestigateoriginanddispersalofnewworldsweetpotatolandraces |
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