Skip to main content
Log in

The Formation of Structural Abnormalities in Karelian Birch Wood is Associated with Auxin Inactivation and Disrupted Basipetal Auxin Transport

  • Published:
Journal of Plant Growth Regulation Aims and scope Submit manuscript

Abstract

Figured wood of Karelian birch (Betula pendula Roth var. carelica (Merckl.) Hämet-Ahti) is highly appraised for its ornamental properties. The reasons for its formation remain largely unclear; judging by available data, we are dealing here with auxin inactivation through its interaction with sugars. The aim of this study has been to reveal the correlations between abnormal wood formation in Karelian birch and auxin conjugation producing IAA-glucose. Karelian birch trees with figured and non-figured wood in the trunk were used. Figured plants had a much higher expression of the gene encoding for the enzyme IAA-glucose synthase, which catalyzes IAA-glucose synthesis. The data obtained suggest that auxin conjugation in Karelian birch via a chain of biochemical reactions may be associated with hexoses produced in the apoplast through sucrose cleavage by cell wall invertase. The activity of the enzyme in figured Karelian birch trees is several times higher than in non-figured plants. Vessel differentiation requires free auxin. We assume that a reduced number of vessels in figured wood may be caused by auxin conjugation in the zone of xylem cell growth and differentiation. Figured wood of Karelian birch was found to have an increased transcript level of the PIN3 gene, which encodes for the auxin efflux carrier protein PIN3 responsible for lateral transport of the hormone. In this regard, PIN3 may generate auxin fluxes with a complex configuration. Microscopic analysis provides evidence that PIN3 overexpression in trunk tissues of Karelian birch is associated with active differentiation of parenchyma cells and disruption of wood structure.

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
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

Download references

Acknowledgements

The study was funded by the Russian Foundation for Basic Research, grants N 16-04-01191_a and N 19-04-00622_a; anatomical studies were carried out under state order to the Karelian Research Centre of the Russian Academy of Sciences (Forest Research Institute KRC). We thank D.S. Ivanova for assistance in the preparation of sections for the microscopic analysis of samples.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Ludmila L. Novitskaya.

Ethics declarations

Conflict of interest

The authors certify that they have no conflict of interest to declare.

Additional information

Publisher's Note

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

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (PDF 85 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Novitskaya, L.L., Tarelkina, T.V., Galibina, N.A. et al. The Formation of Structural Abnormalities in Karelian Birch Wood is Associated with Auxin Inactivation and Disrupted Basipetal Auxin Transport. J Plant Growth Regul 39, 378–394 (2020). https://doi.org/10.1007/s00344-019-09989-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00344-019-09989-8

Keywords

Navigation