•  
  •  
 

Abstract

Salinity stress is one of the major abiotic factors that significantly impact plant growth. In this regard, this work investigated a way to alleviate the adverse impacts by simultaneously spraying methyl jasmonate and titanium nanoparticles on lettuce (Lactuca sativa L.) plants, which are grown under induced salinity conditions. Two concentrations of salt (100 and 150 mM NaCl) were applied to the plants. After that, simultaneous spraying of methyl jasmonate (0.5 and 1 mM) and titanium nanoparticles (100 and 200 mg/L) was performed on lettuce leaves. Following the application of the previous treatments, the plants were collected, and various physiological and biochemical tests were performed for both treated and untreated stressed plants. The results clearly showed that negative effects of salinity, like reduced shoot length, decreased relative water content, and total chlorophyll; however, carotenoids, hydrogen peroxide, and total phenolics were increased compared to unstressed control plants. On the other hand, external spraying of MeJA and nanoparticles on plants grown under saline conditions significantly enhanced their growth by reducing H2O2 accumulation and improving residual water content (RWC), shoot length, total chlorophyll, carotenoids, and total phenolic content. To conclude, methyl jasmonate and titanium dioxide nanoparticles can significantly mitigate and reduce the negative effects of salinity on lettuce plants when they are applied externally on the leaves.

Keywords

H2O2 accumulation, Methyl jasmonate, Phenolic content, Salt stress, Titanium nanoparticles

Subject Area

Biology

Article Type

Article

First Page

2450

Last Page

2464

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Additional Files
7-BSJ-932-Supplementary_File[1].docx (35 kB)
Supplementary File
Download

Share

 
COinS