ArticleBMC plant biology2019
Genetic diversity and population structure of the sweet leaf herb, Stevia rebaudiana B., cultivated and landraces germplasm assessed by EST-SSRs genotyping and steviol glycosides phenotyping.
Article in BMC plant biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 31 citations in OpenAlex.
- A Five-Locus SSR Molecular-Affinity Framework Provides Redundancy Context for Previously Identified Elite-Relevant Lines in a 'Morita II'-DerivedInternational journal of molecular sciences · 2026Article
- Functional study and sequence variation of the SrUGT85C2 genes in Stevia rebaudiana.BMC plant biology · 2026Article
- Phenotypic, chemical component and molecular assessment of genetic diversity and population structure of Morinda officinalis germplasm.BMC genomics · 2022Article
- Protective effects of Stevia rebaudiana extracts on beta cells in lipotoxic conditions.Acta diabetologica · 2022Article
- Genetic Diversity Analysis ofFrontiers in plant science · 2022Article
- Stevia rebaudiana germplasm characterization using microsatellite markers and steviol glycosides quantification by HPLC.Molecular biology reports · 2021Article
- ISSR markers to assess genetic diversity of cultivated populations from artificial selection ofBreeding science · 2020Article
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Authors and funding
7 authors at 2 institutions in 2 countries.
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Abstract
backgroundStevia rebaudiana (Asteraceae), native from Paraguay, accumulates steviol glycosides (SGs) into its leaves. These compounds exhibit acaloric intense sweet taste which answers to consumer demands for reducing daily sugar intake. Despite the developpement of S. rebaudiana cultivation all over the world, the development of new cultivars is very recent, in particular due to a colossal lack of (1) germplasm collection and breeding, (2) studies on genetic diversity and its structuring, (3) genomic tools.
resultsIn this study, we developped 18 EST-SSR from 150,258 EST from The Compositae Genome Project of UC Davis ( http://compgenomics.ucdavis.edu/data/ ). We genotyped 145 S. rebaudiana individuals, issued from thirty-one cultivars and thirty-one landraces of various origins worldwide. Markers polymorphic information content (PIC) ranged between 0.60 and 0.84. An average of 12 alleles per locus and a high observed heterozygoty of 0.69 could be observed. The landraces revealed twice as many private alleles as cultivars. The genotypes could be clustered into 3 genetic populations. The landraces were grouped in the same cluster in which the oldest cultivars "Eirete" and "MoritaIII" type are also found. The other two clusters only include cultivated genotypes. One of them revealed an original genetic variability. SG phenotypes could not discriminate the three genetic clusters but phenotyping showed a wide range of composition in terms of bitter to sweet SGs.
conclusionThis is the first study of genetic diversity in Stevia rebaudiana involving 145 genotypes, including known cultivars as well as landrace populations of different origin. This study pointed out the structuration of S. rebaudiana germplasm and the resource of the landrace populations for genetic improvement, even on the trait of SG's composition.
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