Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection
The in trust sweetpotato collection housed by the International Center of Potato (CIP) is one of the largest assemblages of plant material representing the genetic resources of this important staple crop. The collection currently contains almost 6,000 accessions of Ipomoea batatas (cultivated sweetp...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-10-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2021.660012/full |
| _version_ | 1818925937523163136 |
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| author | Noelle L. Anglin Ronald Robles Genoveva Rossel Rocio Alagon Ana Panta Robert L. Jarret Norma Manrique David Ellis |
| author_facet | Noelle L. Anglin Ronald Robles Genoveva Rossel Rocio Alagon Ana Panta Robert L. Jarret Norma Manrique David Ellis |
| author_sort | Noelle L. Anglin |
| collection | DOAJ |
| description | The in trust sweetpotato collection housed by the International Center of Potato (CIP) is one of the largest assemblages of plant material representing the genetic resources of this important staple crop. The collection currently contains almost 6,000 accessions of Ipomoea batatas (cultivated sweetpotato) and over 1,000 accessions of sweetpotato crop wild relatives (CWRs). In this study, the entire cultivated collection (5,979 accessions) was genotyped with a panel of 20 simple sequence repeat (SSR) markers to assess genetic identity, diversity, and population structure. Genotyping and phenotyping of in vitro plantlets and mother plants were conducted simultaneously on 2,711 accessions (45% of the total collection) to identify and correct possible genetic identity errors which could have occurred at any time over the thirty plus years of maintenance in the in vitro collection. Within this group, 533 accessions (19.6%) had errors in identity. Field evaluations of morphological descriptors were carried out to confirm the marker data. A phylogenetic tree was constructed to reveal the intraspecific relationships in the population which uncovered high levels of redundancy in material from Peru and Latin America. These genotypic data were supported by morphological data. Population structure analysis demonstrated support for four ancestral populations with many of the accessions having lower levels of gene flow from the other populations. This was especially true of germplasm derived from Peru, Ecuador, and Africa. The set of 20 SSR markers was subsequently utilized to examine a subset of 189 accessions from the USDA sweetpotato germplasm collection and to identify and reconcile potential errors in the identification of clones shared between these collections. Marker analysis demonstrated that the USDA subset of material had 65 unique accessions that were not found in the larger CIP collection. As far as the authors are aware, this is the first report of genotyping an entire sweetpotato germplasm collection in its entirety. |
| first_indexed | 2024-12-20T02:49:10Z |
| format | Article |
| id | doaj.art-ff3e7e56f3204319855e1415da0992b8 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-20T02:49:10Z |
| publishDate | 2021-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-ff3e7e56f3204319855e1415da0992b82022-12-21T19:56:06ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-10-011210.3389/fpls.2021.660012660012Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm CollectionNoelle L. Anglin0Ronald Robles1Genoveva Rossel2Rocio Alagon3Ana Panta4Robert L. Jarret5Norma Manrique6David Ellis7International Potato Center (CIP), Lima, PeruInternational Potato Center (CIP), Lima, PeruInternational Potato Center (CIP), Lima, PeruInternational Potato Center (CIP), Lima, PeruInternational Potato Center (CIP), Lima, PeruPlant Genetic Resources Conservation Unit, United States Department of Agriculture, Agricultural Research Service, Griffin, GA, United StatesInternational Potato Center (CIP), Lima, PeruInternational Potato Center (CIP), Lima, PeruThe in trust sweetpotato collection housed by the International Center of Potato (CIP) is one of the largest assemblages of plant material representing the genetic resources of this important staple crop. The collection currently contains almost 6,000 accessions of Ipomoea batatas (cultivated sweetpotato) and over 1,000 accessions of sweetpotato crop wild relatives (CWRs). In this study, the entire cultivated collection (5,979 accessions) was genotyped with a panel of 20 simple sequence repeat (SSR) markers to assess genetic identity, diversity, and population structure. Genotyping and phenotyping of in vitro plantlets and mother plants were conducted simultaneously on 2,711 accessions (45% of the total collection) to identify and correct possible genetic identity errors which could have occurred at any time over the thirty plus years of maintenance in the in vitro collection. Within this group, 533 accessions (19.6%) had errors in identity. Field evaluations of morphological descriptors were carried out to confirm the marker data. A phylogenetic tree was constructed to reveal the intraspecific relationships in the population which uncovered high levels of redundancy in material from Peru and Latin America. These genotypic data were supported by morphological data. Population structure analysis demonstrated support for four ancestral populations with many of the accessions having lower levels of gene flow from the other populations. This was especially true of germplasm derived from Peru, Ecuador, and Africa. The set of 20 SSR markers was subsequently utilized to examine a subset of 189 accessions from the USDA sweetpotato germplasm collection and to identify and reconcile potential errors in the identification of clones shared between these collections. Marker analysis demonstrated that the USDA subset of material had 65 unique accessions that were not found in the larger CIP collection. As far as the authors are aware, this is the first report of genotyping an entire sweetpotato germplasm collection in its entirety.https://www.frontiersin.org/articles/10.3389/fpls.2021.660012/fullsweetpotatogermplasmgenebankpopulation structuregenetic diversitySSRs |
| spellingShingle | Noelle L. Anglin Ronald Robles Genoveva Rossel Rocio Alagon Ana Panta Robert L. Jarret Norma Manrique David Ellis Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection Frontiers in Plant Science sweetpotato germplasm genebank population structure genetic diversity SSRs |
| title | Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection |
| title_full | Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection |
| title_fullStr | Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection |
| title_full_unstemmed | Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection |
| title_short | Genetic Identity, Diversity, and Population Structure of CIP's Sweetpotato (I. batatas) Germplasm Collection |
| title_sort | genetic identity diversity and population structure of cip s sweetpotato i batatas germplasm collection |
| topic | sweetpotato germplasm genebank population structure genetic diversity SSRs |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2021.660012/full |
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