Skip to main content
Log in

Label-free quantitative proteomic analysis determines changes in amino acid and carbohydrate metabolism in three cultivars of Jerusalem artichoke tubers

  • Original Article
  • Published:
Plant Biotechnology Reports Aims and scope Submit manuscript

Abstract

Jerusalem artichoke (JA) tubers are an important bio-economy developing crop because of its invaluable bioproducts in both food and biofuel aspects. However, the molecular mechanism of its tuberization, and the differences among different cultivars have been little studied to date. Therefore, here we selected PJA, DJA, and HJA cultivars of JA tubers, showing variations in their tuber epidermal pigmentation, underground tuberization, and inulin content. A comparative proteome analysis led to the identification of 402 proteins in the tubers of which 114 were significantly modulated among different cultivars. Gene Ontology (GO) analysis showed proteins related to the biosynthesis of amino acids and carbohydrate metabolism were differentially modulated in the tubers of three cultivars. Results from the inulin content measurement and proteome analysis suggest that Sucrose:sucrose 1-fructosyltransferase (1-SST) prioritizes inulin biosynthesis rather than rate-limiting enzyme fructan:fructan 1-fructosyltransferases (1-FFT). Furthermore, we confirmed the relationship between transcript-protein expression levels was in discord within inulin biosynthesis enzymes 1-SST and 1-FFT with the terms in previous RT-qPCR results using the same tubers. Our data represent the first report of comparative tuber proteome profiling of different JA and provide the metabolic and molecular basis for understanding carbohydrate metabolism in the tuber tissue.

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.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgements

This work was supported by a grant from SSAC (Grant no. PJ013186032019) provided to STK and Agricultural Biotechnology Developmental Program (nos. 116091-3) grants from the Ministry of Agriculture, Food and Rural Affairs and KRIBB Research Initiative Program to HS Cho.

Author information

Authors and Affiliations

Authors

Contributions

HSC and STK conceived and designed the study and wrote the manuscript. CWM, WYJ, and RG performed the proteome data analysis and wrote the manuscript. HJP and K-BM conducted phenotyping and molecular evaluation and wrote the manuscript. HK, H-SK, J-HS, and J-HJ analyzed the carbohydrate analysis and wrote the manuscript.

Corresponding authors

Correspondence to Sun Tae Kim or Hye Sun Cho.

Ethics declarations

Conflict of interest

The authors declare no conflicts of interest.

Electronic supplementary material

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Min, C.W., Jung, W.Y., Park, H.J. et al. Label-free quantitative proteomic analysis determines changes in amino acid and carbohydrate metabolism in three cultivars of Jerusalem artichoke tubers. Plant Biotechnol Rep 13, 111–122 (2019). https://doi.org/10.1007/s11816-019-00518-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11816-019-00518-3

Keywords

Navigation