Smýkal, P and Trněný, O and Brus, J and Hanáček, P and Rathore, A and Das, R R and Pechanec, V and Duchoslav, M and Bhattacharyya, D and Bariotakis, M and Pirintsos, S and Berger, J and Toker, C (2018) Genetic structure of wild pea (Pisum sativum subsp. elatius) populations in the northern part of the Fertile Crescent reflects moderate cross-pollination and strong effect of geographic but not environmental distance. PLoS One (TSI), 13 (3). pp. 1-22. ISSN 1932-6203
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Abstract
Knowledge of current genetic diversity and mating systems of crop wild relatives (CWR) in the Fertile Crescent is important in crop genetic improvement, because western agriculture began in the area after the cold-dry period known as Younger Dryas about 12,000 years ago and these species are also wild genepools of the world’s most important food crops. Wild pea (Pisum sativum subsp. elatius) is an important source of genetic diversity for further pea crop improvement harbouring traits useful in climate change context. The genetic structure was assessed on 187 individuals of Pisum sativum subsp. elatius from fourteen populations collected in the northern part of the Fertile Crescent using 18,397 genome wide single nucleotide polymorphism DARTseq markers. AMOVA showed that 63% of the allelic variation was distributed between populations and 19% between individuals within populations. Four populations were found to contain admixed individuals. The observed heterozygosity ranged between 0.99 to 6.26% with estimated self-pollination rate between 47 to 90%. Genetic distances of wild pea populations were correlated with geographic but not environmental (climatic) distances and support a mixed mating system with predominant self-pollination. Niche modelling with future climatic projections showed a local decline in habitats suitable for wild pea, making a strong case for further collection and ex situ conservation.
| Item Type: | Article |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Genetic structure, wild pea, genetic diversity, crop wild relatives, genetic modelling |
| Subjects: | Others > Genetics and Genomics |
| Depositing User: | Mr Ramesh K |
| Date Deposited: | 15 May 2018 08:41 |
| Last Modified: | 15 May 2018 08:41 |
| URI: | http://oar.icrisat.org/id/eprint/10665 |
| Official URL: | http://dx.doi.org/10.1371/journal.pone.0194056 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | P.S. research is funded by the Grant Agency of the Czech Republic, 16-21053S and Palacký University grant Agency IGA 2015_001, 2016_001, 2017_01 projects. O.T. is supported by partial institutional funding on long-term conceptual development of Agricultural Research, Ltd. organisation. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. |
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