Skip to main content
Log in

Molecular Functional Characterisation of MechlPPDK Promoter in Transgenic Tobacco

  • Published:
Tropical Plant Biology Aims and scope Submit manuscript

Abstract

Chloroplastic pyruvate phosphate dikinase (PPDK) (chlPPDK) is a key enzyme in the photosynthesis of C4 plants. PPDK is expressed in high abundance in C4 plants but only in trace amounts in C3 plants. The existing research reveals a higher expression of MechlPPDK in cultivated cassava varieties than that in wild cassava W14. However, knowledge about the transcriptional regulation of the MechlPPDK gene in cassava (Manihot esculenta Crantz) is insufficient. Therefore, we aim to identify the transcription profile of MechlPPDK and the core promoter region of MechlPPDK. We cloned the MechlPPDK coding sequence and its 5′-flanking sequence from the cassava variety Ku50. A series of deletion constructions fused to a uidA reporter gene were performed in the 5′-flanking sequence and stably transformed into tobacco. We found that P1 (from −590 bp to +114 bp) had the highest promoter activity among P1 to P3. The 5′-flanking sequence of MechlPPDK responded differently to varied abiotic stresses. Our results will further the understanding of the regulation of MechlPPDK expression.

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
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Abbreviations

CDS:

Coding sequence

EDTA:

Ethylene diamine tetraacetic acid

PEPC:

Phosphoenolpyruvate carboxylase

PPDK:

Pyruvate phosphate dikinase

RACE:

Rapid-amplification of cDNA ends

TSS:

Transcriptional start site

GUS:

β-glucuronidase

References

Download references

Acknowledgements

This study was funded by the National Natural Science Foundation of China (Grant No. 31701509) and the China Agriculture Research System (CARS-12).

Author information

Authors and Affiliations

Authors

Contributions

Kaimian Li and Wenquan Wang directed and designed the experiments. Haiyan Wang performed most of the research and drafted the manuscript. Xu Shen planted the transformed tobacco plants, and Cheng Lu performed some field experiments. All authors have read and approved the final manuscript.

Corresponding authors

Correspondence to Haiyan Wang, Kaimian Li or Wenquan Wang.

Ethics declarations

Conflict of Interest

The authors declare no conflict of interest.

Additional information

Communicated by: Elliosha Hajari

Publisher’s Note

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

Electronic supplementary material

ESM 1

(DOCX 58 kb)

ESM 2

Fig. A1. Structure of MechlPPDK gene. Location of exons and introns are indicated by box and line between boxes. The numbers above the box indicate length of exons. Red box indicates 5’untranslated region and white box indicates 3’untranslated region. ATG and TGA indicate translation initiation codon and termination codon (PNG 897 kb)

High Resolution Image (TIF 33 kb)

ESM 3

Fig.A2. The map of pCAMBIA1381Z:pMechPPDK (PNG 870 kb)

High Resolution Image (TIF 148 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, H., Shen, X., Lu, C. et al. Molecular Functional Characterisation of MechlPPDK Promoter in Transgenic Tobacco. Tropical Plant Biol. 13, 287–295 (2020). https://doi.org/10.1007/s12042-020-09257-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12042-020-09257-0

Keywords

Navigation