Skip to main content
Log in

Molecular characterization and phylogenetic analysis of Wx genes of four diploid species of the Triticeae genera Eremopyrum, Psathyrostachys, and Henrardia

  • Research Article
  • Published:
Genetic Resources and Crop Evolution Aims and scope Submit manuscript

Abstract

In wheat endosperm, the granule-bound starch synthase or the Waxy protein is the sole enzyme for amylose synthesis and thus determines the amylose content and ratio of amylose/amylopectin. The gene encoding this enzyme has been named as Waxy (Wx) gene. In this study, eight novel Wx alleles from four diploid species belonging to the three Triticeae genera, namely Eremopyrum, Psathyrostachys, and Henrardia have been isolated and characterized. The genetic diversity of these genes was evaluated at the molecular sequence level, and the nucleotides of these Wx genes were also compared with their homologs from wheat and its relatives. The Wx alleles of P. juncea (Fischer) Nevski, E. triticeum (Gaertn.) Nevski, E. bonaepartis (Sprengel) Nevsk, and H. persica (Boiss.) C. E. Hubbard showed obvious differences from the homologous alleles known from wheat and Aegilops as well as Taeniatherum in terms of nucleotide composition, intron length, isoelectric point, and molecular mass. Phylogenetic analysis suggested that the Wx alleles of these four species distantly related to wheat were more closely related to those of Hordeum and Secale than the other species. These Wx alleles are novel candidates with potential application in wheat breeding for modified starch properties.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2

Similar content being viewed by others

References

Download references

Acknowledgements

We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.

Funding

This work was supported from the Ministry of Science and Technology of China (2016YFD0100502, 2017YFD0100903), the National Natural Science Foundation of China (31771783, U1403185), the Sichuan Science and Technology Program (Nos. 2018HH0113 and 2018HH0130), and the Key Research and Development Program of Sichuan Province (2018NZDZX0002).

Author information

Authors and Affiliations

Authors

Contributions

Z.H. Y coordinated the project, conceived and designed experiments. S.F. D and J.R. L conducted the experiments, and edits the manuscript. J.W. H, W.J. Y, Q.Y. L, Y.Y. Z, Z.P. S analyzed the data, J. L, and G. L planted the materials, G.Y. C and Y.M. W provide some advice on data analysis. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Zehong Yan.

Ethics declarations

Conflict of interest

The authors declare that they have no conflicts of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Dai, S., Li, J., Huang, J. et al. Molecular characterization and phylogenetic analysis of Wx genes of four diploid species of the Triticeae genera Eremopyrum, Psathyrostachys, and Henrardia. Genet Resour Crop Evol 68, 1389–1400 (2021). https://doi.org/10.1007/s10722-020-01069-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10722-020-01069-1

Keywords

Navigation