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Genetic Diversity and Population Structure of the USDA Sweetpotato (Ipomoea batatas) Germplasm Collections Using GBSpoly

Overview of attention for article published in Frontiers in Plant Science, August 2018
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Title
Genetic Diversity and Population Structure of the USDA Sweetpotato (Ipomoea batatas) Germplasm Collections Using GBSpoly
Published in
Frontiers in Plant Science, August 2018
DOI 10.3389/fpls.2018.01166
Pubmed ID
Authors

Phillip A. Wadl, Bode A. Olukolu, Sandra E. Branham, Robert L. Jarret, G. Craig Yencho, D. Michael Jackson

Abstract

Sweetpotato (Ipomoea batatas) plays a critical role in food security and is the most important root crop worldwide following potatoes and cassava. In the United States (US), it is valued at over $700 million USD. There are two sweetpotato germplasm collections (Plant Genetic Resources Conservation Unit and US Vegetable Laboratory) maintained by the USDA, ARS for sweetpotato crop improvement. To date, no genome-wide assessment of genetic diversity within these collections has been reported in the published literature. In our study, population structure and genetic diversity of 417 USDA sweetpotato accessions originating from 8 broad geographical regions (Africa, Australia, Caribbean, Central America, Far East, North America, Pacific Islands, and South America) were determined using single nucleotide polymorphisms (SNPs) identified with a genotyping-by-sequencing (GBS) protocol, GBSpoly, optimized for highly heterozygous and polyploid species. Population structure using Bayesian clustering analyses (STRUCTURE) with 32,784 segregating SNPs grouped the accessions into four genetic groups and indicated a high degree of mixed ancestry. A neighbor-joining cladogram and principal components analysis based on a pairwise genetic distance matrix of the accessions supported the population structure analysis. Pairwise FST values between broad geographical regions based on the origin of accessions ranged from 0.017 (Far East - Pacific Islands) to 0.110 (Australia - South America) and supported the clustering of accessions based on genetic distance. The markers developed for use with this collection of accessions provide an important genomic resource for the sweetpotato community, and contribute to our understanding of the genetic diversity present within the US sweetpotato collection and the species.

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Mendeley readers

Mendeley readers

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Geographical breakdown

Country Count As %
Unknown 100 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 17 17%
Researcher 14 14%
Student > Master 14 14%
Student > Doctoral Student 5 5%
Student > Bachelor 5 5%
Other 19 19%
Unknown 26 26%
Readers by discipline Count As %
Agricultural and Biological Sciences 50 50%
Biochemistry, Genetics and Molecular Biology 10 10%
Unspecified 3 3%
Pharmacology, Toxicology and Pharmaceutical Science 1 1%
Nursing and Health Professions 1 1%
Other 5 5%
Unknown 30 30%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 09 September 2018.
All research outputs
#15,544,609
of 23,102,082 outputs
Outputs from Frontiers in Plant Science
#11,063
of 20,728 outputs
Outputs of similar age
#211,318
of 333,772 outputs
Outputs of similar age from Frontiers in Plant Science
#294
of 457 outputs
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