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    Unlocking the diversity of genebanks: whole-genome marker analysis of Swiss bread wheat and spelt

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    Type
    Article
    Authors
    Müller, Thomas cc
    Schierscher-Viret, Beate
    Fossati, Dario
    Brabant, Cécile
    Schori, Arnold
    Keller, Beat cc
    Krattinger, Simon G. cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Plant Science
    Date
    2017-11-04
    Online Publication Date
    2017-11-04
    Print Publication Date
    2018-02
    Permanent link to this record
    http://hdl.handle.net/10754/626128
    
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    Abstract
    Genebanks play a pivotal role in preserving the genetic diversity present among old landraces and wild progenitors of modern crops and they represent sources of agriculturally important genes that were lost during domestication and in modern breeding. However, undesirable genes that negatively affect crop performance are often co-introduced when landraces and wild crop progenitors are crossed with elite cultivars, which often limit the use of genebank material in modern breeding programs. A detailed genetic characterization is an important prerequisite to solve this problem and to make genebank material more accessible to breeding. Here, we genotyped 502 bread wheat and 293 spelt accessions held in the Swiss National Genebank using a 15K wheat SNP array. The material included both spring and winter wheats and consisted of old landraces and modern cultivars. Genome- and sub-genome-wide analyses revealed that spelt and bread wheat form two distinct gene pools. In addition, we identified bread wheat landraces that were genetically distinct from modern cultivars. Such accessions were possibly missed in the early Swiss wheat breeding program and are promising targets for the identification of novel genes. The genetic information obtained in this study is appropriate to perform genome-wide association studies, which will facilitate the identification and transfer of agriculturally important genes from the genebank into modern cultivars through marker-assisted selection.
    Citation
    Müller T, Schierscher-Viret B, Fossati D, Brabant C, Schori A, et al. (2017) Unlocking the diversity of genebanks: whole-genome marker analysis of Swiss bread wheat and spelt. Theoretical and Applied Genetics. Available: http://dx.doi.org/10.1007/s00122-017-3010-5.
    Sponsors
    We thank Simon Fluckiger and Helen Zbinden for technical assistance with DNA extraction and Prof. Eduard Akhunov for providing the genotypic data of the international wheat accessions. This work was supported by the Swiss Federal Office for Agriculture (BLW) in the framework of NAP-PGREL (national plan of action for the conservation and sustainable utilization of plant genetic resources). SGK is supported by an Ambizione fellowship of the Swiss National Science Foundation.
    Publisher
    Springer Nature
    Journal
    Theoretical and Applied Genetics
    DOI
    10.1007/s00122-017-3010-5
    PubMed ID
    29103142
    Additional Links
    http://link.springer.com/article/10.1007/s00122-017-3010-5
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00122-017-3010-5
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division

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