Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/14660
Title: The origin of the C-genome and cytoplasm of Avena polyploids
Authors: Nikoloudakis, Nikolaos 
Katsiotis, Andreas 
Major Field of Science: Agricultural Sciences
Field Category: AGRICULTURAL SCIENCES;Agricultural Biotechnology;Other Agricultural Sciences
Keywords: Oats;Avena sativa;Crown rust
Issue Date: Jul-2008
Source: Theoretical and Applied Genetics, 2008, vol. 117, iss. 2, pp. 273-281
Volume: 117
Issue: 2
Start page: 273
End page: 281
Journal: Theoretical and Applied Genetics 
Abstract: The contribution of C-genome diploid species to the evolution of polyploid oats was studied using C-genome ITS-specific primers. SCAR analysis among Avena accessions confirmed the presence of C-genome ITS1-5.8S-ITS2 sequences in the genome of AACC and AACCDD polyploids. In situ hybridization and screening of more than a thousand rRNA clones in Avena polyploid species containing the C-genome revealed substantial C-genome rRNA sequence elimination. C-genome clones sequenced and Maximum Likelihood Parsimony analysis revealed close proximity to Avena ventricosa ITS1-5.8S-ITS2 sequences, providing strong evidence of the latter's active role in the evolution of tetraploid and hexaploid oats. In addition, cloning and sequencing of the chloroplastic trnL intron among the most representative Avena species verified the maternal origin of A-genome for the AACC interspecific hybrid formation, which was the genetic bridge for the establishment of cultivated hexaploid oats.
URI: https://hdl.handle.net/20.500.14279/14660
ISSN: 14322242
DOI: 10.1007/s00122-008-0772-9
Rights: © Springer
Type: Article
Affiliation : Agricultural University of Athens 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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