Skip to main content
Log in

Role of peroxynitrite in the responses induced by heat stress in tobacco BY-2 cultured cells

  • Original Article
  • Published:
Protoplasma Aims and scope Submit manuscript

Abstract

Temperatures above the optimum are sensed as heat stress (HS) by all living organisms and represent one of the major environmental challenges for plants. Plants can cope with HS by activating specific defense mechanisms to minimize damage and ensure cellular functionality. One of the most common effects of HS is the overproduction of reactive oxygen and nitrogen species (ROS and RNS). The role of ROS and RNS in the regulation of many plant physiological processes is well established. On the contrary, in plants very little is known about the physiological role of peroxynitrite (ONOO), the RNS species generated by the interaction between NO and O2. In this work, the role of ONOO on some of the stress responses induced by HS in tobacco BY-2 cultured cells has been investigated by measuring these responses both in the presence and in the absence of 2,6,8-trihydroxypurine (urate), a specific scavenger of ONOO. The obtained results suggest a potential role for ONOO in some of the responses induced by HS in tobacco cultured cells. In particular, ONOO seems implicated in a form of cell death showing apoptotic features and in the regulation of the levels of proteins involved in the response to stress.

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

Abbreviations

BiP:

Binding protein

DAF-FM:

4-Amino-5-methylamino-2′,7′-difluorofluorescein

HS:

Heat stress

NO:

Nitric oxide

ONOO:

Peroxynitrite

PCD:

Programmed cell death

ROS:

Reactive oxygen species

RNS:

Reactive nitrogen species

XTT:

Sodium,39-[1-[phenylamino-carbonyl]-3,4-tetrazolium]-bis(4-methoxy-6-nitro) benzene-sulfonic acid hydrate

References

Download references

Acknowledgments

The authors acknowledge the University of Milano-Bicocca, Fondo d’Ateneo per la Ricerca, for the financial support.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Massimo Malerba.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Handling Editor: Peter Nick

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Malerba, M., Cerana, R. Role of peroxynitrite in the responses induced by heat stress in tobacco BY-2 cultured cells. Protoplasma 255, 1079–1087 (2018). https://doi.org/10.1007/s00709-017-1200-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00709-017-1200-2

Keywords

Navigation