Genetic Diversification and Dispersal of Taro (Colocasia esculenta (L.) Schott)
| Autor: | H. Chaïr, R. E. Traore, M. F. Duval, R. Rivallan, A. Mukherjee, L. M. Aboagye, W. J. Van Rensburg, V. Andrianavalona, M. A. A. Pinheiro de Carvalho, F. Saborio, M. Sri Prana, B. Komolong, F. Lawac, V. Lebot |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
lcsh:Medicine 01 natural sciences Genetic diversity F30 - Génétique et amélioration des plantes Geographical Locations Génétique des populations Ploidy Marqueur génétique América lcsh:Science Multidisciplinary biology Ecology food and beverages F70 - Taxonomie végétale et phytogéographie Gene Pool Triploidy Geography Shannon Index Gene pool Colocasia Research Article Asia Ecological Metrics Distribution géographique India Subtropics 010603 evolutionary biology Polyploidy Variation génétique Genetic variation Genetics Colocasia esculenta Alleles Histoire naturelle Evolutionary Biology África Population Biology lcsh:R Ecology and Environmental Sciences Microsatellite Tropics Genetic Variation Biology and Life Sciences Species Diversity biology.organism_classification Genetic Loci Africa People and Places Biological dispersal lcsh:Q U30 - Méthodes de recherche Americas Departures from Diploidy Population Genetics 010606 plant biology & botany Microsatellite Repeats |
| Zdroj: | PLoS ONE PLoS ONE, Vol 11, Iss 6, p e0157712 (2016) PLoS ONE; Volumen 11, Número 6, 2016 Kérwá Universidad de Costa Rica instacron:UCR PloS One |
| ISSN: | 1932-6203 |
| Popis: | Taro (Colocasia esculenta (L.) Schott) is widely distributed in tropical and sub-tropical areas. However, its origin, diversification and dispersal remain unclear. While taro genetic diversity has been documented at the country and regional levels in Asia and the Pacific, few reports are available from Americas and Africa where it has been introduced through human migrations. We used eleven microsatellite markers to investigate the diversity and diversification of taro accessions from nineteen countries in Asia, the Pacific, Africa and America. The highest genetic diversity and number of private alleles were observed in Asian accessions, mainly from India. While taro has been diversified in Asia and the Pacific mostly via sexual reproduction, clonal reproduction with mutation appeared predominant in African and American countries investigated. Bayesian clustering revealed a first genetic group of diploids from the Asia-Pacific region and to a second diploid-triploid group mainly from India. Admixed cultivars between the two genetic pools were also found. In West Africa, most cultivars were found to have originated from India. Only one multi-locus lineage was assigned to the Asian pool, while cultivars in Madagascar originated from India and Indonesia. The South African cultivars shared lineages with Japan. The Caribbean Islands cultivars were found to have originated from the Pacific, while in Costa Rica they were from India or admixed between Indian and Asian groups. Taro dispersal in the different areas of Africa and America is thus discussed in the light of available records of voyages and settlements. European Commission/[DCIFOOD/2010/230-267]//Unión Europea UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Agroalimentarias::Centro de Investigaciones Agronómicas (CIA) |
| Databáze: | OpenAIRE |
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