SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Kaoh Juliane)
 

Sökning: WFRF:(Kaoh Juliane) > (2020) > Genome-wide genotyp...

  • Sharif, Bilal MuhammadCIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France.;Univ Vienna, Dept Evolutionary Anthropol, A-1090 Vienna, Austria. (författare)

Genome-wide genotyping elucidates the geographical diversification and dispersal of the polyploid and clonally propagated yam (Dioscorea alata)

  • Artikel/kapitelEngelska2020

Förlag, utgivningsår, omfång ...

  • 2020-06-27
  • OXFORD UNIV PRESS,2020
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-429055
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-429055URI
  • https://doi.org/10.1093/aob/mcaa122DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Background and Aims Inferring the diffusion history of many human-dispersed species is still not straightforward due to unresolved past human migrations. The centre of diversification and routes of migration of the autopolyploid and clonally propagated greater yam, Dioscorea alata, one of the oldest edible tubers, remain unclear. Here, we address yam demographic and dispersal history using a worldwide sample. Methods We characterized genome-wide patterns of genetic variation using genotyping by sequencing 643 greater yam accessions spanning four continents. First, we disentangled the polyploid and clonal components of yam diversity using allele frequency distribution and identity by descent approaches. We then addressed yam geographical origin and diffusion history with a model-based coalescent inferential approach. Key Results Diploid genotypes were more frequent than triploids and tetraploids worldwide. Genetic diversity was generally low and clonality appeared to be a main factor of diversification. The most likely evolutionary scenario supported an early divergence of mainland Southeast Asian and Pacific gene pools with continuous migration between them. The genetic make-up of triploids and tetraploids suggests that they have originated from these two regions before westward yam migration. The Indian Peninsula gene pool gave origin to the African gene pool. which was later introduced to the Caribbean region. Conclusions Our results arc congruent with the hypothesis of independent domestication origins of the two main Asian and Pacific gene pools. The low genetic diversity and high clonality observed suggest a strong domestication bottleneck followed by thousands of years of widespread vegetative propagation and polyploidization. Both processes reduced the extent of diversity available for breeding. and this is likely to threaten future adaptation.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Burgarella, ConcettaUppsala universitet,Institutionen för organismbiologi,CIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France(Swepub:uu)conbu791 (författare)
  • Cormier, FabienUniv Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France.;CIRAD, UMR AGAP, F-97170 Petit Bourg, Guadeloupe, France. (författare)
  • Mournet, PierreCIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France. (författare)
  • Causse, SandrineCIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France. (författare)
  • Van, Kien Nguyen (författare)
  • Kaoh, JulianeVanuatu Agr Res & Tech Ctr VARTC, Espiritu Santo PB 231, Luganville, Vanuatu. (författare)
  • Rajaonah, Mamy TianaKew Madagascar Conservat Ctr, Antananarivo 101, Madagascar. (författare)
  • Lakshan, Senanayake RavindaField Crops Res & Dev Inst FCRDI, Mahailluppallama 50270, Anuradhapura, Sri Lanka. (författare)
  • Waki, JeffreyNatl Agr Res Inst NARI, POB 1639, Lae, Morobe Province, Papua N Guinea. (författare)
  • Bhattacharjee, RanjanaInt Inst Trop Agr IITA, PMB 5320, Ibadan, Oyo State, Nigeria. (författare)
  • Badara, GueyeInt Inst Trop Agr IITA, PMB 5320, Ibadan, Oyo State, Nigeria. (författare)
  • Pachakkil, BabilTokyo Univ Agr TUA, Setagaya Ku, Sakuragaoka 1-1-1, Tokyo 1560054, Japan. (författare)
  • Arnau, GemmaUniv Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France.;CIRAD, UMR AGAP, F-97170 Petit Bourg, Guadeloupe, France. (författare)
  • Chair, HanaCIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France. (författare)
  • CIRAD, UMR AGAP, F-34398 Montpellier, France.;Univ Montpellier, Montpellier SupAgro, INRA, CIRAD,AGAP, Montpellier, France.;Univ Vienna, Dept Evolutionary Anthropol, A-1090 Vienna, Austria.Institutionen för organismbiologi (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Annals of Botany: OXFORD UNIV PRESS126:6, s. 1029-10380305-73641095-8290

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy