Next Article in Journal
Anti-Cancer Activities of Diterpenoids Derived from Euphorbia fischeriana Steud
Next Article in Special Issue
Exogenous Melatonin Mitigates Acid Rain Stress to Tomato Plants through Modulation of Leaf Ultrastructure, Photosynthesis and Antioxidant Potential
Previous Article in Journal
Physicochemical Properties and Oxidative Storage Stability of Milled Roselle (Hibiscus sabdariffa L.) Seeds
Previous Article in Special Issue
Melatonin: A Molecule for Reducing Breast Cancer Risk
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Molecules 2018, 23(2), 386; https://doi.org/10.3390/molecules23020386

Melatonin Alleviates High Temperature-Induced Pollen Abortion in Solanum lycopersicum

1
Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou 310058, China
2
Agricultural Experiment Station, Zhejiang University, Hangzhou 310058, China
3
Chinese Academy of Agricultural Mechanization Sciences, Beijing 10083, China
4
Department of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh 11451, Saudi Arabia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 4 January 2018 / Revised: 7 February 2018 / Accepted: 8 February 2018 / Published: 11 February 2018
Full-Text   |   PDF [3338 KB, uploaded 11 February 2018]   |  

Abstract

Melatonin is a pleiotropic signal molecule that plays critical roles in regulating plant growth and development, as well as providing physiological protections against various environmental stresses. Nonetheless, the mechanisms for melatonin-mediated pollen thermotolerance remain largely unknown. In this study, we report that irrigation treatment with melatonin (20 µM) effectively ameliorated high temperature-induced inactivation of pollen and inhibition of pollen germination in tomato (Solanum lycopersicum) plants. Melatonin alleviated reactive oxygen species production in tomato anthers under high temperature by the up-regulation of the transcription and activities of several antioxidant enzymes. Transmission electron micrograph results showed that high temperature-induced pollen abortion is associated with a premature degeneration of the tapetum cells and the formation of defective pollen grains with degenerated nuclei at the early uninuclear microspore stage, whilst melatonin protected degradation of organelles by enhancing the expression of heat shock protein genes to refold unfolded proteins and the expression of autophagy-related genes and formation of autophagosomes to degrade denatured proteins. These findings suggest a novel function of melatonin to protect pollen activity under high temperature and support the potential effects of melatonin on reproductive development of plants. View Full-Text
Keywords: autophagy; heat shock protein (HSP); high temperature; melatonin; pollen; Solanum lycopersicum autophagy; heat shock protein (HSP); high temperature; melatonin; pollen; Solanum lycopersicum
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Qi, Z.-Y.; Wang, K.-X.; Yan, M.-Y.; Kanwar, M.K.; Li, D.-Y.; Wijaya, L.; Alyemeni, M.N.; Ahmad, P.; Zhou, J. Melatonin Alleviates High Temperature-Induced Pollen Abortion in Solanum lycopersicum. Molecules 2018, 23, 386.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top