Nickel and ozone stresses induce differential growth, antioxidant activity and mRNA transcription in Oryza sativa cultivars

Journal of Plant Interactions

Yaser Hassan¹  Amel Tammam²  Reem Badr²  Hanan Abou-Zeid²  Aida Bader³ 

[1] Department of Air Pollution, National Research Centre;Department of Botany and Microbiology, Faculty of Science, Alexandria University;Faculty of Science, Mergib University;

关键词: antioxidant enzymes;    gene expression;    nickel;    ozone;    oryza sativa;   

DOI  :  10.1080/17429145.2018.1556356

来源: DOAJ

【 摘 要 】

This study evaluates the influences of nickel and ozone exposure individually and/ or in combination on growth performance, antioxidant activity and genes up regulation of two rice cultivars Sakha 101 and Giza 178. Ni treatment at high doses (100 µM Ni) and 75 ppb O3 alone reduced the fresh weight, mineral content, membrane integrity and Rubisco content. There was an increase in SOD and APX activity in the shoots of rice cultivars, whereas, there was a decrease in GR and GST in the roots and shoots. In contrast combined stresses appeared to be stimulatory for growth and mineral contents, Rubisco content and antioxidant enzymes. Nonspecific lipid transfer protein and transmembrane protein genes were up regulation in rice cultivars in response to Ni stress. Carotenoid cleavage dioxygenase is upregulated in response to ozone stress; RNA pseudouridine synthase, heat shock proteins and cytochrome P450-like were upregulated in response to combined stresses. The results revealed that the interactive effects of both stresses were antagonistic on growth parameters and antioxidant activities to overcome the adverse effects of both pollutants.

【 授权许可】

Unknown