Skip to main content
Log in

Adverse effects of heat stress in relation to actin cytoskeleton on pollen performance of Echinopsis chamaecereus (Cactaceae)

  • Original Article
  • Published:
Brazilian Journal of Botany Aims and scope Submit manuscript

Abstract

In this study, the effects of heat stress (30 °C, 35 °C, 40 °C) on pollen performance of Echinopsis chamaecereus Friedrich & Glaetzle were analyzed. Heat-treated pollen grains showed a insignificant reduction in germination rate. Pollen tubes treated by temperatures above 30 °C exhibited a decrease in tube length and a negative effect on pollen performance according to cumulative stress response index data. Pollen tube abnormality was enhanced by increased temperature, and bifurcated pollen tubes were very dominant than the other abnormalities. Callose accumulation on tube tips was enhanced by increased temperature. In bifurcated pollen tubes, one of the tubes blocked by callose plugs or dense callose accumulation was observed on tips. Actin organization showed disruption, and anisotropy of actin filaments increased at temperatures above 30 °C. The findings show that high temperatures cause destructive effects on male reproductive biology even in species such as cacti known to be temperature tolerant.

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

Similar content being viewed by others

References

Download references

Acknowledgements

This research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors.

Author information

Authors and Affiliations

Authors

Contributions

AÇG conceived and planned the experiments and wrote the manuscript.

Corresponding author

Correspondence to Aslıhan Çetinbaş-Genç.

Additional information

Publisher's Note

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

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Çetinbaş-Genç, A. Adverse effects of heat stress in relation to actin cytoskeleton on pollen performance of Echinopsis chamaecereus (Cactaceae). Braz. J. Bot 43, 29–34 (2020). https://doi.org/10.1007/s40415-020-00580-0

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s40415-020-00580-0

Keywords

Navigation