Role of Exogenous Melatonin, Hydrogen Sulfide and Nitric Oxide on Organic Acid Content of Eruca sativa L. under Salt Stress

Metin Turan,Betül Ince,Tuba Arjumend,Melek Ekinci,Ertan Yıldırım

doi:10.18535/ijsrm/v9i11.ah01

Abstract

Salt stress affects agricultural output by influencing numerous internal metabolisms in plants and disrupting physiological and biochemical activities such as photosynthesis, translocation, respiration, and growth stimulants. The role of exogenous melatonin, hydrogen sulfide and nitric oxide application on the organic acid contents of rocket plants under salt stress was examined in this study. Different salt doses (0, 150 and 250 mM NaCl) and exogenous applications (0, 50 and100 µM) were made to rocket plants under the greenhouse conditions. Plants leaves and roots exhibited a decline in the organic acid contents under salinity stress. Application of the amendments, however, was found significant in mitigating the negative effect of salt stress. Melatonin and hydrogen sulfide treatments had a stronger anti-salt action in the leaves. On the other hand, nitrous oxide role was more obvious in the roots followed by melatonin. With this, exogenous applications to the plant mitigated the harmful effects of salt stress on organic acid contents depending on the dose.

Highlights

Salinity is one of the most important abiotic stress factors affecting yield and quality in agricultural production
The organic acid content of rocket leaves is shown in the Table
The results of this study demonstrated that salt stress at both levels in comparison to the control led to a significant decrease in organic acid contents except citric acid

Summary

Introduction

Salinity is one of the most important abiotic stress factors affecting yield and quality in agricultural production. Salt stress adversely affects seed germination, morphological characteristics, plant growth, yield and components, decreases the rate of photosynthesis and respiration in the plant. In order to alleviate or prevent the negative effects of salt stress on the morphological, physiological and biochemical properties of plants, various applications are made to the plant in exogenous forms. The reason for using these practices is that breeding studies to obtain salt-tolerant varieties take many years and require a lot of effort. These applications are made at low concentrations and even show their effects in a very short time. Melatonin and hydrogen sulfide are some of the applications use exogenously to alleviate or prevent salt stress damage in plants.

Methods

Results

Conclusion