NDLI: Functional features of a single chromosome arm in wheat (1AL) determined from its structure

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Functional features of a single chromosome arm in wheat (1AL) determined from its structure

Content Provider	Springer Nature Link
Author	Lucas, Stuart J. Šimková, Hana Šafář, Jan Jurman, Irena Cattonaro, Federica Vautrin, Sonia Bellec, Arnaud Berges, Hélène Doležel, Jaroslav Budak, Hikmet
Copyright Year	2011
Abstract	Bread wheat (Triticum aestivum L.) is one of the most important crops globally and a high priority for genetic improvement, but its large and complex genome has been seen as intractable to whole genome sequencing. Isolation of individual wheat chromosome arms has facilitated large-scale sequence analyses. However, so far there is no such survey of sequences from the A genome of wheat. Greater understanding of an A chromosome could facilitate wheat improvement and future sequencing of the entire genome. We have constructed BAC library from the long arm of T. aestivum chromosome 1A (1AL) and obtained BAC end sequences from 7,470 clones encompassing the arm. We obtained 13,445 (89.99%) useful sequences with a cumulative length of 7.57 Mb, representing 1.43% of 1AL and about 0.14% of the entire A genome. The GC content of the sequences was 44.7%, and 90% of the chromosome was estimated to comprise repeat sequences, while just over 1% encoded expressed genes. From the sequence data, we identified a large number of sites suitable for development of molecular markers (362 SSR and 6,948 ISBP) which will have utility for mapping this chromosome and for marker assisted breeding. From 44 putative ISBP markers tested 23 (52.3%) were found to be useful. The BAC end sequence data also enabled the identification of genes and syntenic blocks specific to chromosome 1AL, suggesting regions of particular functional interest and targets for future research.
Starting Page	173
Ending Page	182
Page Count	10
File Format	PDF
ISSN	1438793X
Journal	Functional & Integrative Genomics
Volume Number	12
Issue Number	1
e-ISSN	14387948
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Wheat A genome BAC end sequencing Comparative genomics Marker design Bioinformatics Microbial Genetics and Genomics Plant Genetics & Genomics Animal Genetics and Genomics Cell Biology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine

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