Melatonin and calcium function synergistically to promote the resilience through ROS metabolism under arsenic-induced stress

Journal of Hazardous Materials
Manzer H SiddiquiParvaiz Ahmad

Abstract

The interplay between melatonin (Mel) and calcium (Ca2+) in enhancing tolerance to metalloid toxicity and underlying physiological and biochemical mechanisms of this relationship still remains unknown. The present study reveals that the signaling molecules Mel and/or Ca2+ enhanced tolerance of Vicia faba (cv. Tara) plant to metalloid arsenic (As) toxicity. However, a combination of Mel and Ca2+ was more efficient than alone. Plants grew with As exhibited enhanced hydrogen peroxide, superoxide anion, electrolyte leakage, lipid peroxidation together with increased reactive oxygen species (ROS) producing enzymes, such as NADPH oxidase and glycolate oxidase (GOX). On the contrary, an inhibition in chlorophyll (Chl) biosynthesis and gas exchange parameters (net photosynthetic rate, stomatal conductance, intercellular carbon dioxide concentration) was observed. Under As toxicity conditions, the application of Mel and Ca2+ synergistically suppressed the plants' program cell death features (nucleus condensation and nucleus fragmentation) in guard cells of stomata, DNA damage, and formation of ROS in guard cells, leaves and roots. Moreover, it enhanced gas exchange parameters and activity of enzymes involved in photosynthesis process (c...Continue Reading

Citations

Oct 10, 2020·Plant Cell Reports·Ali RazaMirza Hasanuzzaman
Oct 29, 2020·Journal of Hazardous Materials·Harshita SinghShri Ram Yadav
Nov 7, 2020·Journal of Hazardous Materials·Javaid Akhter BhatFrancisco J Corpas
May 19, 2021·Journal of the Science of Food and Agriculture·Marino B Arnao, Josefa Hernández-Ruiz
Jun 4, 2021·Plant Physiology and Biochemistry : PPB·Feiyu YanGanghua Li
Jul 13, 2021·Plant Phenomics : a Science Partner Journal·Zhuangzhuang SunDong Jiang
Oct 12, 2021·International Journal of Phytoremediation·Rehana SardarNasim Ahmad Yasin
Dec 16, 2021·Plant & Cell Physiology·Morteza Soleimani AghdamFrancisco J Corpas

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