Genetic diversity and structure among Iranian tall fescue populations based on genomic-SSR and EST-SSR marker analysis

Tall fescue (Festuca arundinacea Schreb. subsp. arundinacea) is one of the most economically important forage grasses in cold and temperate regions of the world. In this study, we have assessed the genetic diversity and structure of wild Iranian tall fescue populations. Thirty-seven individuals from...

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Bibliographic Details
Published in:Plant systematics and evolution 2009-09, Vol.282 (1-2), p.57-70
Main Authors: Sharifi Tehrani, Majid, Mardi, Mohsen, Sahebi, Jamal, Catalán, Pilar, Díaz-Pérez, Antonio
Format: Article
Language:English
Subjects:
Alleles
Bayesian analysis
Biomedical and Life Sciences
Clustering
DNA
Economic importance
Expressed sequence tags
Genetic diversity
Genetic loci
Genetic structure
Genetic variation
Genomics
Geography
Grasses
Life Sciences
Lolium arundinaceum
Natural populations
Original Article
Plant Anatomy/Development
Plant Ecology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Polymorphism
Population genetics
Population geography
Population parameters
Population structure
Populations
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Summary:Tall fescue (Festuca arundinacea Schreb. subsp. arundinacea) is one of the most economically important forage grasses in cold and temperate regions of the world. In this study, we have assessed the genetic diversity and structure of wild Iranian tall fescue populations. Thirty-seven individuals from nine natural populations from northern, western, and southern Iranian mountain ranges were analyzed using six genomic-SSRs and five EST-SSRs primer pairs. Our analysis has demonstrated that transcribed EST-SSR regions showed levels of polymorphism similar to genomic-SSR regions. UPGMA, repeated bisection, and model-based Bayesian STRUCTURE clustering methods coupled with neighbor-net network were used to establish six divergent groups of individuals. F ST estimates among clusters showed moderate to low genetic structure. Within-group genetic diversity estimate H and partial correlations between genetic and geographic distances among populations suggested that western Zagros population was related to the rest of the Iranian individuals. The isolation-by-distance hypothesis was not supported by SSR data and the present geographical sampling.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-009-0207-3