High-resolution organellar genome analysis of Triticum and Aegilops sheds new light on cytoplasm evolution in wheat


Autoria(s): Provan, Jim; Wolters, P.; Caldwell, K.H.; Powell, W.
Data(s)

01/04/2004

Resumo

We have utilised polymorphic chloroplast microsatellites to analyse cytoplasmic relationships between accessions in the genera Triticum and Aegilops. Sequencing of PCR products revealed point mutations and insertions/deletions in addition to the standard repeat length expansion/contraction which most likely represent ancient synapomorphies. Phylogenetic analyses revealed three distinct groups of accessions. One of these contained all the non-Aegilops speltoides S-type cytoplasm species, another comprised almost exclusively A, C, D, M, N, T and U cytoplasm-type accessions and the third contained the polyploid Triticum species and all the Ae. speltoides accessions, further confirming that Ae. speltoides or a closely related but now extinct species was the original B-genome donor of cultivated polyploid wheat. Successive decreases in levels of genetic diversity due to domestication were also observed. Finally, we highlight the importance of elucidating longer-term evolutionary processes operating at microsatellite repeat loci.

Identificador

http://pure.qub.ac.uk/portal/en/publications/highresolution-organellar-genome-analysis-of-triticum-and-aegilops-sheds-new-light-on-cytoplasm-evolution-in-wheat(79937833-0c50-4d2a-9115-f5d2ceb2f99d).html

http://dx.doi.org/10.1007/s00122-003-1538-z

http://www.scopus.com/inward/record.url?scp=2142787971&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Provan , J , Wolters , P , Caldwell , K H & Powell , W 2004 , ' High-resolution organellar genome analysis of Triticum and Aegilops sheds new light on cytoplasm evolution in wheat ' Theoretical and Applied Genetics TAG , vol 108(6) , no. 6 , pp. 1182-1190 . DOI: 10.1007/s00122-003-1538-z

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/1100/1102 #Agronomy and Crop Science #/dk/atira/pure/subjectarea/asjc/1100/1108 #Horticulture #/dk/atira/pure/subjectarea/asjc/1100/1110 #Plant Science #/dk/atira/pure/subjectarea/asjc/1300/1311 #Genetics #/dk/atira/pure/subjectarea/asjc/2700/2716 #Genetics(clinical)
Tipo

article